Average annual temperature is 16.7 °C
Absolute maximum temperature: 38.2 °C
Absolute minimum temperature: -5.7 °C
Number of sunny days: 163 days
Number of rainy days: 199 days
Number of snow days: 3 days
Look at detailed online map of Seimon
* Weather data for Seimon Japan is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 14.0 | 18.7 | 25.2 | 26.4 | 32.5 | 31.6 | 38.2 | 37.3 | 36.0 | 28.1 | 25.2 | 19.4 |
| Average daytime temperature (°C) | 9.1 | 11.3 | 17.2 | 20.7 | 23.5 | 27.2 | 33.3 | 33.7 | 30.7 | 22.8 | 18.2 | 13.3 |
| Average temperature (°C) | 4.1 | 5.8 | 11.9 | 15.4 | 18.2 | 22.7 | 28.0 | 28.8 | 26.2 | 17.7 | 12.9 | 7.7 |
| Average night temperature (°C) | 0.0 | 1.2 | 7.2 | 10.7 | 13.8 | 19.0 | 23.7 | 25.3 | 23.0 | 13.3 | 8.5 | 3.2 |
| Absolute minimum temperature (°C) | -5.7 | -4.4 | 0.9 | 3.5 | 7.5 | 12.5 | 21.2 | 23.6 | 16.8 | 8.7 | 3.4 | -2.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.4 | 7.9 | 7.6 | 8.7 | 8.8 | 7.5 | 10.6 | 11.1 | 9.1 | 8.5 | 7.1 | 7.8 |
| Precipitation (mm) | 26 | 44 | 127 | 99 | 173 | 313 | 37 | 112 | 242 | 102 | 57 | 35 |
| Sunny days | 18 | 17 | 13 | 16 | 15 | 7 | 11 | 7 | 8 | 14 | 17 | 20 |
| Rainy days | 11 | 10 | 18 | 14 | 16 | 23 | 20 | 24 | 22 | 17 | 13 | 11 |
| Snow days | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Seimon during the most sunny months:
The largest precipitation sum in Seimon is at