When Do The Four Seasons Start And End May 2026

For a quick reference, here is how the two systems contrast for the Northern Hemisphere:

| Season | Meteorological Start | Meteorological End | Astronomical Start (approx) | Astronomical End (approx) | | :--- | :--- | :--- | :--- | :--- | | Spring | March 1 | May 31 | March 20 | June 21 | | Summer | June 1 | August 31 | June 21 | September 22 | | Autumn | September 1 | November 30 | September 22 | December 21 | | Winter | December 1 | February 28/29 | December 21 | March 20 |

(Note: Dates for the Southern Hemisphere are reversed. When it is astronomical summer in the north (June 21), it is astronomical winter in the south.)

🌍 Note: Dates shift by ~1 day depending on the year and time zone. In the Southern Hemisphere, all seasons are opposite to the North.

The start and end dates for the four seasons depend on whether you use the astronomical calendar (based on the Earth's orbit) or the meteorological calendar (based on temperature cycles). 2026 Season Dates (Northern Hemisphere)

In the Northern Hemisphere, the dates for the current year are as follows: Meteorological Dates Astronomical Dates (Approx.) Spring March 1 – May 31 March 20 – June 20 Summer June 1 – August 31 June 21 – September 22 Fall September 1 – November 30 September 22 – December 20 Winter December 1 – February 28/29 December 21 – March 19 Two Ways to Define Seasons When Do the Seasons Start and End in 2026?

The timing of the seasons depends on whether you follow the astronomical calendar (based on Earth's position relative to the sun) or the meteorological calendar (based on temperature cycles). 📅 Astronomical Seasons (2026)

These are defined by equinoxes and solstices. They usually fall around the 20th–22nd of the month. Spring: March 20 – June 20 (Spring Equinox) Summer: June 21 – September 21 (Summer Solstice) Autumn: September 22 – December 20 (Fall Equinox) Winter: December 21 – March 19 (Winter Solstice) 🌡️ Meteorological Seasons

Meteorologists use full months to simplify record-keeping and align with the annual temperature cycle. Spring: March 1 – May 31 Summer: June 1 – August 31 Autumn: September 1 – November 30 Winter: December 1 – February 28 (or 29) 🌏 Why Do They Happen? The Tilt: Earth is tilted at 23.5 degrees.

The Orbit: Different parts of Earth receive more direct sunlight at different times of the year.

The Hemisphere: Seasons are reversed in the Southern Hemisphere. (e.g., Australia’s Summer starts in December). 🔍 Key Terms to Know Equinox: Day and night are approximately equal length.

Solstice: The day with the most (Summer) or least (Winter) daylight.

Lag of Seasons: Why the hottest day isn't until weeks after the solstice (the Earth takes time to warm up).

1. Astronomical Seasons (based on Earth's position relative to the Sun)

2. Meteorological Seasons (based on annual temperature cycles, simpler for record-keeping)

Key difference: Astronomical seasons vary slightly each year (dates shift by 1–2 days), while meteorological seasons have fixed calendar dates. Most weather forecasts and climate data use the meteorological system.

There are actually two different ways to define the seasons: the Meteorological method (used by scientists and weather forecasters) and the Astronomical method (based on the position of the Earth relative to the sun).

Here is the breakdown of both.

The concept of seasons is based on Earth’s axial tilt and its orbit around the Sun. However, there are two widely accepted systems for marking the boundaries of spring, summer, autumn, and winter: the astronomical seasons (dependent on solstices and equinoxes) and the meteorological seasons (based on annual temperature cycles and the calendar).

If you just need a general rule of thumb:

Whether you’re planning a garden, booking a vacation, or just trying to figure out when to pull your sweaters out of storage, knowing exactly when the seasons shift is essential. While we often think of the seasons as fixed blocks of time, their start and end dates actually depend on whether you’re looking at the sky or the calendar.

Here is everything you need to know about when the four seasons start and end, covering both the astronomical and meteorological perspectives. The Two Ways to Define Seasons

There are two primary methods used to measure the seasons: Astronomical and Meteorological.

Astronomical Seasons: These are based on the Earth’s position relative to the sun. They are defined by solstices (the longest and shortest days) and equinoxes (when day and night are roughly equal).

Meteorological Seasons: These are based on the annual temperature cycle and the Gregorian calendar. Meteorologists break the year into four three-month quarters to make record-keeping and forecasting easier. 1. Spring (The Season of Rebirth)

Spring is defined by lengthening days and the "greening" of the landscape.

Astronomical Start: The Vernal Equinox, which usually falls on March 19, 20, or 21. Astronomical End: The Summer Solstice (around June 20). Meteorological Dates: March 1 to May 31.

What happens: In the Northern Hemisphere, the Earth begins to tilt back toward the sun, leading to warmer temperatures and the blooming of flora. 2. Summer (The Season of Heat)

Summer brings the highest temperatures and the longest periods of daylight.

Astronomical Start: The Summer Solstice, occurring around June 20 or 21. This is the day with the most daylight hours of the year.

Astronomical End: The Autumnal Equinox (around September 22). Meteorological Dates: June 1 to August 31.

What happens: This is the peak of the warm season. Because the ocean takes a long time to warm up, the hottest days usually occur in July or August, a phenomenon known as "seasonal lag." 3. Autumn / Fall (The Season of Harvest)

As the Earth continues its orbit, the tilt moves us away from the sun again.

Astronomical Start: The Autumnal Equinox, falling on September 22 or 23. Astronomical End: The Winter Solstice (around December 21). Meteorological Dates: September 1 to November 30.

What happens: Temperatures begin to drop, and deciduous trees lose their leaves. In many cultures, this is the traditional time for harvesting crops before the frost. 4. Winter (The Season of Dormancy)

Winter features the shortest days and the coldest weather of the year.

Astronomical Start: The Winter Solstice, occurring on December 21 or 22. This is the "shortest day" of the year. Astronomical End: The Vernal Equinox (around March 20).

Meteorological Dates: December 1 to February 28 (or 29 in a leap year).

What happens: The Northern Hemisphere is tilted furthest away from the sun. In many regions, this brings snow, ice, and freezing temperatures. Quick Reference Table (Northern Hemisphere) Meteorological Dates Astronomical Start (Approx.) Spring March 1 – May 31 March 20 (Equinox) Summer June 1 – Aug 31 June 21 (Solstice) Autumn Sept 1 – Nov 30 September 22 (Equinox) Winter Dec 1 – Feb 28/29 December 21 (Solstice) What About the Southern Hemisphere? when do the four seasons start and end

If you are in Australia, South America, or South Africa, the seasons are exactly opposite. When the Northern Hemisphere tilts toward the sun, the Southern Hemisphere tilts away. Summer begins in December. Autumn begins in March. Winter begins in June. Spring begins in September. Why do the dates change slightly each year?

You might notice that the astronomical start dates can shift by a day or two each year. This happens because a solar year (the time it takes for Earth to orbit the sun) is actually about 365.24 days, not a perfect 365. Our leap year system corrects this, but it causes the exact timing of the equinoxes and solstices to wobble slightly on the calendar.

The start and end dates of the four seasons depend on whether you use the astronomical or meteorological calendar. Astronomically, seasons are marked by the Earth's position relative to the sun (solstices and equinoxes), while meteorologists use fixed three-month blocks based on temperature cycles. Seasonal Dates for 2026 Meteorological Dates Astronomical Dates (Northern Hemisphere) Spring March 1 – May 31 March 20 – June 20 Summer June 1 – August 31 June 21 – September 22 Autumn September 1 – November 30 September 23 – December 20 Winter December 1 – February 28 December 21 – March 19 (2027)

Note: In the Southern Hemisphere, these seasons are reversed (e.g., Summer begins in December). The Rhythm of the Earth: An Essay on the Four Seasons

The four seasons—spring, summer, autumn, and winter—form a continuous cycle that dictates the rhythm of life on Earth. This annual progression is not merely a change in the weather; it is a profound transformation of the landscape, affecting everything from the migration of birds to the growth of the food we eat.

The Awakening of SpringThe cycle often feels as though it begins with spring, a period of renewal. As the Earth tilts back toward the sun, temperatures rise, and the frozen ground softens. This season is defined by the "awakening" of nature: flowers bloom, trees sprout fresh green leaves, and animals emerge from hibernation. Farmers traditionally use this time to prepare their fields, marking a season of hope and new beginnings.

The Vitality of SummerFollowing the gentle growth of spring is the peak of the solar year: summer. During these months, the hemisphere is at its maximum tilt toward the sun, resulting in the longest days and the most intense heat. Summer is a time of high energy and abundance, where nature is at its most productive. For humans, it often represents a period of leisure and outdoor activity, characterized by school vacations and the harvest of summer fruits. When Do Seasons Start and End? - Time and Date

The start and end dates of the four seasons depend on whether you use the astronomical

calendar (based on Earth's position relative to the sun) or the meteorological calendar (based on temperature cycles and months).

National Centers for Environmental Information (NCEI) (.gov) Seasonal Breakdown for 2026 The dates below apply to the Northern Hemisphere

. For the Southern Hemisphere, these dates are reversed (e.g., March 20 marks the start of Autumn). Time and Date 1. Astronomical Seasons Astronomical seasons begin at the

. These dates vary slightly each year because Earth's orbit is not a perfect 365 days. Royal Meteorological Society

Seasons of the Year: When Do They Start and End? - Time and Date

When Do the Four Seasons Start and End? A Helpful Guide

As we go about our daily lives, it's easy to get caught up in the hustle and bustle and lose track of the changing seasons. But understanding when each season starts and ends can help us plan our activities, appreciate the beauty of nature, and stay connected to the world around us.

In this blog post, we'll break down the exact dates for the start and end of each season in the Northern and Southern Hemispheres. Whether you're a nature enthusiast, a farmer, or simply someone who loves to stay organized, this guide is for you!

The Four Seasons: A Quick Overview

Before we dive into the specific dates, let's quickly review the four seasons:

When Do the Seasons Start and End in the Northern Hemisphere?

In the Northern Hemisphere, the seasons start and end on the following dates:

When Do the Seasons Start and End in the Southern Hemisphere?

In the Southern Hemisphere, the seasons are reversed due to the Earth's tilt. Here are the dates:

Why Do the Dates Vary Slightly from Year to Year?

The dates of the seasons can vary slightly from year to year due to the Earth's elliptical orbit around the Sun. This means that the exact dates of the solstices and equinoxes can shift by a day or two from one year to the next.

Conclusion

Understanding when the four seasons start and end can help us appreciate the beauty and rhythms of nature. Whether you're in the Northern or Southern Hemisphere, we hope this guide has been helpful in planning your activities and staying connected to the world around you.

Share Your Favorite Seasonal Activities!

What's your favorite thing to do during each season? Do you have a favorite holiday or tradition? Share your thoughts with us in the comments below!

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The start and end dates of the four seasons depend on whether you use the astronomical

definition (based on Earth's position relative to the Sun) or the meteorological

definition (based on the calendar and temperature cycles). Because Earth is tilted, seasons are reversed between the Northern and Southern Hemispheres. The Old Farmer’s Almanac 2026 Seasonal Dates

For the year 2026, the specific astronomical transitions are as follows: Northern Hemisphere (Astronomical) Southern Hemisphere (Astronomical) March 20 – June 20 September 23 – December 21 June 21 – September 21 December 22 – March 19 (2027) September 22 – December 20 March 20 – June 20 December 21 – March 19 (2027) June 21 – September 22 Two Ways to Define Seasons Astronomical Seasons : These are defined by (when day and night are roughly equal) and

(the longest and shortest days of the year). These dates vary slightly each year because the Earth takes about 365.24 days to orbit the Sun. Meteorological Seasons

: Used by scientists for consistent record-keeping, these split the year into four 3-month periods that always start on the first day of a month. Northern Hemisphere

: Spring (March 1), Summer (June 1), Autumn (Sept 1), Winter (Dec 1). Southern Hemisphere For a quick reference, here is how the

: Spring (Sept 1), Summer (Dec 1), Autumn (March 1), Winter (June 1). The Old Farmer’s Almanac The Role of Earth's Tilt

Seasons of the Year: When Do They Start and End? - Time and Date

The start and end dates of the four seasons depend on whether you follow the astronomical

calendar (based on Earth's position relative to the sun) or the meteorological

calendar (based on the annual temperature cycle and fixed three-month blocks). The Old Farmer’s Almanac 2026 Seasonal Dates (Northern Hemisphere)

For those in the Northern Hemisphere (e.g., North America, Europe, much of Asia), the dates are: Astronomical Dates (2026) Meteorological Dates March 20 – June 20 March 1 – May 31 June 21 – September 21 June 1 – August 31 September 22 – December 20 September 1 – November 30 December 21 – March 19, 2027 December 1 – February 28 2026 Seasonal Dates (Southern Hemisphere)

Seasons in the Southern Hemisphere (e.g., Australia, South America, South Africa) are the opposite of the Northern Hemisphere. Time and Date

Meteorological and Astronomical Seasons: Southern ... - NOAA

The start and end dates for the four seasons depend on whether you use the astronomical (sun-based) or meteorological (temperature-based) calendar. The Old Farmer’s Almanac Northern Hemisphere Dates (2026)

For most people in the Northern Hemisphere, the official "first day" of a season follows the astronomical calendar, though weather experts use fixed monthly dates for better data tracking. Time and Date Astronomical (Sun Position) Meteorological (Calendar) March 20 – June 20 March 1 – May 31 June 21 – Sept 21 June 1 – August 31 Sept 22 – Dec 20 Sept 1 – Nov 30 Dec 21 – March 19 (2027) Dec 1 – Feb 28 (2027) Why Two Different Systems?

Seasons of the Year: When Do They Start and End? - Time and Date

The Four Seasons: When Do They Start and End?

The four seasons - spring, summer, autumn (or fall), and winter - are a fundamental part of our annual cycle, bringing changes in weather, temperature, and daylight hours. But have you ever wondered exactly when each season starts and ends? The answer lies in the Earth's tilt and orbit around the Sun.

Earth's Axial Tilt and Orbit

The Earth's axis is tilted at an angle of approximately 23.5 degrees relative to its orbital plane around the Sun. As the Earth orbits the Sun, its axial tilt causes the amount of sunlight that reaches the planet to vary throughout the year. This variation in sunlight leads to the changing seasons.

The Four Seasons: Dates and Characteristics

The four seasons are typically defined as follows:

Solstices and Equinoxes: Key Dates

The solstices and equinoxes are essential dates that mark the beginning of each season:

Hemispheric Variations

The seasons occur at opposite times of the year in the Northern and Southern Hemispheres. When it is summer in the Northern Hemisphere, it is winter in the Southern Hemisphere, and vice versa. This is due to the Earth's axial tilt, which causes the Southern Hemisphere to be tilted away from the Sun during the Northern Hemisphere's summer.

Cultural and Meteorological Definitions

While the astronomical definitions of the seasons are based on the Earth's orbit and axial tilt, cultural and meteorological definitions may vary. For example:

Conclusion

In conclusion, the four seasons - spring, summer, autumn (or fall), and winter - are a natural part of our annual cycle, caused by the Earth's axial tilt and orbit around the Sun. Understanding when each season starts and ends can help us appreciate the changing times of the year and plan our activities accordingly. While there are astronomical, meteorological, and cultural definitions of the seasons, the traditional astronomical definitions remain the most widely accepted.

The Four Seasons: When Do They Start and End?

The four seasons - spring, summer, autumn (or fall), and winter - are a fundamental part of our yearly cycle. Each season brings its own unique characteristics, weather patterns, and activities. But when exactly do the four seasons start and end?

Spring

Spring is the season that marks the beginning of new life and growth. In the Northern Hemisphere, spring typically begins on:

In the Southern Hemisphere, spring starts on:

Summer

Summer is the warmest and sunniest season of the year. In the Northern Hemisphere:

In the Southern Hemisphere:

Autumn (or Fall)

Autumn, also known as fall, is the season of harvest and change. In the Northern Hemisphere:

In the Southern Hemisphere:

Winter

Winter is the coldest and darkest season of the year. In the Northern Hemisphere: 🌍 Note: Dates shift by ~1 day depending

In the Southern Hemisphere:

Variations

It's worth noting that the exact dates of the seasons can vary slightly from year to year due to the Earth's elliptical orbit around the sun. Additionally, some cultures and traditions may celebrate the start of the seasons on different dates.

Conclusion

In conclusion, the four seasons - spring, summer, autumn (or fall), and winter - start and end on specific dates that vary depending on the hemisphere. Understanding when each season begins and ends can help us appreciate the unique characteristics and activities of each time of year. Whether you're looking forward to the warmth of summer or the coziness of winter, knowing when the seasons start and end can help you make the most of the year.

The dates of the four seasons depend on whether you are looking at the calendar through the lens of astronomy or meteorology. 1. The Astronomical Seasons

Most people are familiar with the astronomical seasons, which are based on the Earth's position relative to the sun. These start and end on specific "turning points":

Spring (Vernal Equinox): March 20 or 21. This is when day and night are roughly equal in length.

Summer (Summer Solstice): June 20 or 21. This is the longest day of the year.

Autumn (Autumnal Equinox): September 22 or 23. Day and night are equal again.

Winter (Winter Solstice): December 21 or 22. This is the shortest day of the year.

Because the Earth takes about 365.24 days to orbit the sun, these dates shift slightly each year, which is why we have leap years to keep them from drifting too far. 2. The Meteorological Seasons

Meteorologists and climatologists use a different system. They break the year into four three-month periods based on the annual temperature cycle and the Gregorian calendar. This makes record-keeping and data comparison much simpler. Spring: March 1 to May 31. Summer: June 1 to August 31. Autumn: September 1 to November 30. Winter: December 1 to February 28 (or 29). 3. The Hemispheric Difference

It is important to remember that these seasons are reversed depending on where you live. When the Northern Hemisphere is tilted toward the sun (Summer), the Southern Hemisphere is tilted away (Winter). Therefore, while a New Yorker is starting their summer on June 21, someone in Sydney, Australia, is beginning their winter.

In short, if you follow the stars and the sun, the seasons begin around the 20th–22nd of the month. If you follow weather patterns and the calendar, they begin on the 1st. Both systems provide a useful way to organize our lives around the natural rhythm of the planet.

In 2026, the four seasons start and end on different dates depending on whether you use the astronomical (solstices and equinoxes) or meteorological (full months) definition. Northern Hemisphere Seasons (2026) Astronomical Dates Meteorological Dates Spring March 20 – June 20 March 1 – May 31 Summer June 21 – September 22 June 1 – August 31 Autumn September 23 – December 20 September 1 – November 30 Winter December 21 – March 19, 2027 December 1 – February 28, 2027 Southern Hemisphere Seasons (2026) Astronomical Dates Meteorological Dates Autumn March 20 – June 20 March 1 – May 31 Winter June 21 – September 22 June 1 – August 31 Spring September 23 – December 21 September 1 – November 30 Summer December 22 – March 19, 2027 December 1 – February 28, 2027 Key Differences

Astronomical Seasons: Based on Earth's position relative to the Sun. These dates vary slightly each year due to the Earth's elliptical orbit. Tools like the Time and Date Season Calculator can show exact times for your specific location.

Meteorological Seasons: Used by climatologists for consistent data tracking, these divide the year into four three-month periods. In Australia, for example, the Bureau of Meteorology typically defines seasons starting on the first day of the month. When Do Seasons Start and End? - Time and Date

When Do the Four Seasons Start and End? A Comprehensive Guide

The four seasons - spring, summer, autumn (or fall), and winter - are a fundamental part of our planet's annual cycle. Each season brings its own unique characteristics, weather patterns, and activities, and understanding when they start and end can help us make the most of the year. In this article, we'll explore the exact dates of the four seasons and what you can expect during each one.

The Astronomical Definition of the Seasons

The four seasons are defined by the Earth's position in its orbit around the Sun. The planet's axis is tilted at an angle of about 23.5 degrees, which means that the amount of sunlight it receives varies throughout the year. The seasons are determined by the following astronomical events:

When Do the Four Seasons Start and End?

The dates of the four seasons vary slightly from year to year due to the Earth's elliptical orbit around the Sun. However, the following dates are generally accepted as the start and end dates of each season:

The Meteorological Definition of the Seasons

While the astronomical definition of the seasons is based on the Earth's position in its orbit, the meteorological definition is based on the annual temperature cycle. The meteorological seasons are defined as:

This definition is often used by meteorologists and climatologists to simplify the analysis of weather patterns and climate trends.

What to Expect During Each Season

Now that we've covered the start and end dates of the four seasons, let's take a brief look at what you can expect during each one:

Conclusion

The four seasons are an integral part of our planet's annual cycle, and understanding when they start and end can help us appreciate the changing world around us. Whether you're an astronomy enthusiast, a weather buff, or simply someone who loves the outdoors, knowing the dates of the seasons can help you make the most of the year. So mark your calendars, plan your activities, and enjoy the unique characteristics of each season!

Example (Northern Hemisphere, typical year)

(Exact hour/minute changes every year; consult an astronomical almanac for precise timestamps.)

Let’s clear up a few persistent myths about the seasons.

Myth 1: The solstice is the "middle" of summer or winter.

Myth 2: The Earth is farther from the sun in winter, which is why it's cold.

Myth 3: The equinox means exactly 12 hours of day and night everywhere.

Myth 4: The seasons start on the same day worldwide.