September 2026
Historical dataDaily high, low, and average
Most notable conditions during this period
Load the same period from the previous 15 years.
Key findings from analysis for selected period
Average highs of 25.6°C in Tokyo. Warm, pleasant conditions.
626mm of rain over 30 days.
The 3 most extreme of 8 notable days in this period:
Hottest day: 31.4°C
Hottest day: 31.4°C
Heavy rain: 69.7mm in one day
2 days with dangerous heat index levels (42.1°C average). Temperature 31.4°C combined with 80% humidity creates hazardous conditions.
Average humidity of 87% indicates persistently moist air conditions. Heat sensation amplified during warm periods (25.6°C average temperature).