September in Tokyo typically marks the transition from summer to autumn. Expect daytime temperatures averaging in the mid-70s Fahrenheit (mid-20s Celsius) with cooler evenings. Humidity remains relatively high, but gradually decreases throughout the month. Rainfall is common, often in the form of short, heavy showers, due to the tail end of typhoon season.
Understanding typical climate conditions for this period is valuable for travelers planning trips, event organizers preparing for outdoor activities, and businesses anticipating seasonal demands. Historical weather data provides a baseline for predicting potential conditions, allowing for informed decision-making. Preparation based on historical trends can mitigate potential disruptions caused by unexpected weather fluctuations.