when is autum 2025

Sushi Authors

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01-12-2024

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Autumn, or fall, is a beloved season for many, marked by crisp air, vibrant foliage, and cozy vibes. But when exactly does autumn arrive in 2025? The answer isn't as simple as a single date, as it depends on your location and how you define the start of autumn.

Understanding the Astronomical and Meteorological Autumns

There are two main ways to determine the start of autumn: astronomically and meteorologically.

Astronomical Autumn: This is determined by the autumnal equinox, the point at which the sun crosses the celestial equator going southward. This marks the moment when day and night are roughly equal in length. In the Northern Hemisphere, the autumnal equinox typically falls around September 22nd or 23rd. For 2025, the autumnal equinox will be on September 23rd. This date is the most precise astronomical marker for the beginning of autumn.

Meteorological Autumn: Meteorologists prefer a simpler system for tracking seasons. They divide the year into four three-month periods based on temperature cycles. Meteorological autumn in the Northern Hemisphere runs from September 1st to November 30th. This system provides a consistent, calendar-based approach, simplifying data analysis and forecasting.

Regional Variations in Autumn's Arrival

While the equinox provides a precise astronomical date, the experience of autumn varies geographically. Higher altitudes experience cooler temperatures and leaf changes earlier than lower-lying areas. Proximity to large bodies of water also influences temperatures, delaying the arrival of autumn in coastal regions.

For example, while the astronomical autumn begins on September 23rd across the Northern Hemisphere, mountainous regions might already be experiencing autumnal conditions weeks earlier. Conversely, coastal areas might still have warm temperatures well into October.

Autumn 2025: Key Dates and Events

• Astronomical Autumn (Northern Hemisphere): September 23rd, 2025
• Meteorological Autumn (Northern Hemisphere): September 1st, 2025 – November 30th, 2025
• Potential for early leaf changes: This varies greatly by region and altitude. Check local weather forecasts and foliage reports for specifics.

Keep in mind these dates apply to the Northern Hemisphere. In the Southern Hemisphere, the seasons are reversed, with autumn beginning in March.

Embrace the Autumnal Season in 2025!

No matter which definition you prefer, autumn 2025 promises a delightful shift in the season. Whether you're planning a foliage-viewing trip, enjoying pumpkin spice lattes, or simply relishing the cooler temperatures, remember to appreciate the beauty and unique qualities of this transitional season. So mark your calendars (whether for September 1st or September 23rd!), and get ready to enjoy the arrival of autumn 2025.