Only 22 Days Left: When Does Autumn Begin and Temperatures Improve?

Only about 22 days remain until the astronomical beginning of autumn, which officially starts on Wednesday, September 23, 2026. The transition marks the end of summer and the gradual improvement of weather conditions, particularly with lower temperatures and humidity levels.

According to astronomical calculations for the seasons of 2026, spring began on Friday, March 20, while summer began on Sunday, June 21, lasting approximately 93 days and 15 hours.

When Does Autumn 2026 Begin?

Autumn 2026 begins on Wednesday, September 23, and lasts approximately 89 days and 20 hours. Winter will then begin on Monday, December 21, 2026, lasting around 88 days and 23 hours.

With the beginning of autumn, temperatures are expected to gradually decline compared with the summer season, while humidity levels also begin to decrease, bringing more moderate weather conditions.

What Happened After the Summer Solstice?

The summer solstice occurred on Sunday, June 21, 2026, when the Sun reached its northernmost apparent position in the sky. At the same time, the Earth's North Pole reached its maximum tilt of approximately 23.5 degrees toward the Sun.

As a result, the Northern Hemisphere experienced its longest day and shortest night of the year.

Following the summer solstice, daylight hours gradually decrease while nighttime hours increase, leading to the autumnal equinox on September 23.