Weather in Asia for September 2025

Tokyo, Japan, in September experiences a transition from the hot, humid summer to a more temperate autumn. At the beginning of the month, the weather remains quite warm and humid, with average daytime temperatures around 27° and nighttime temperatures around 21°.

The humidity can be quite high, often making it feel warmer than the actual temperature. Rain is also common during this period, as September is part of the typhoon season.

Typhoons can bring heavy rainfall and strong winds, so it’s important to stay updated on weather forecasts if you’re traveling during this time.

As the month progresses, the weather starts to cool down. By the end of September, daytime temperatures typically drop to around 23°, and nighttime temperatures can fall to around 18°. The humidity levels also decrease, making the weather feel more comfortable.

Rainfall becomes less frequent towards the end of the month, although occasional showers can still occur. The skies often clear up, providing more sunny days and a pleasant atmosphere for outdoor activities.

Overall, September in Tokyo offers a mix of warm, humid days at the beginning and cooler, more comfortable weather towards the end. It’s a month of change, bridging the gap between the intense summer heat and the mild autumn.

Have you visited Asia in September? Share your experience by writing a review.