Tokyo weather in September
September in Tokyo: hot, soaked, with very humid — a good time to visit.
#11 of 12 months in Tokyo · #506 of 604 destinations to visit in September · comfort 62/100 (tier C)
Updated June 2026 · climate normals from ERA5 reanalysis
Tokyo climate normals — September
| Daytime high | 27°C / 80°F | 🥵 hot |
|---|---|---|
| Nighttime low | 21°C / 70°F | |
| Feels like (high) | 29°C / 84°F | |
| Rainfall | 157 mm / 6.2 in | ⛈ soaked |
| Rainy days | 13 days | |
| Humidity | 82% | 💦 very humid |
| Dew point | 21°C / 70°F | |
| Sunshine | 7.9 h/day | |
| Daylight | 12.4 h | |
| Wind | 19 km/h / 12 mph | |
| Air quality (US AQI) | 68 | 🙂 moderate |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Tokyo in September — FAQ
- Is September a good time to visit Tokyo?
- September in Tokyo: hot, soaked, with very humid — a good time to visit. It ranks #11 of 12 months for Tokyo on SeasonMap's comfort score (62/100).
- What is the weather like in Tokyo in September?
- In September, Tokyo averages a daily high of 26.8°C and a low of 21.2°C, with about 157.2 mm of rain over roughly 13 rainy days.
- What is the air quality in Tokyo in September?
- Tokyo has a mean US Air Quality Index of about 68 in September.