Climate
Weather in Japan in September
Weather in Japan, September
In September, Japan sees average highs of 28.8°C (84°F) and lows of 21.7°C (71°F), with around 200 mm of rain.
Japan — September
Japan → September
- Daytime high
- 28.8°C (84°F)
- Overnight low
- 21.7°C (71°F)
- Rainfall
- 200 mm
- Best-time rank
- Off-peak
How September compares
| This month | 28.8°C (84°F) / 21.7°C (71°F) · 200 mm |
|---|---|
| Yearly average | 20.8°C (69°F) / 12.4°C (54°F) · 131 mm |
September in Japan runs 8°C (14.4°F) warmer than the yearly average, and is wetter than the yearly average. Pack layers you can adjust through the day — mild conditions, and something waterproof — this is a wetter month.
Common questions
What is the weather like in Japan in September?
Average highs of 28.8°C (84°F) and lows of 21.7°C (71°F), with around 200 mm of rain.
Is September a good time to visit Japan?
It is an off-peak month for comfort in Japan; May, June, October tend to be more pleasant.
Updated climate normals, 2025