Average annual temperature is 13.1 °C
Absolute maximum temperature: 38.2 °C
Absolute minimum temperature: -8.9 °C
Number of sunny days: 78 days
Number of rainy days: 256 days
Number of snow days: 31 days
Look at detailed online map of Sanpōbun
* Weather data for Sanpōbun 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) | 9.5 | 11.3 | 20.6 | 25.1 | 30.0 | 28.0 | 34.7 | 38.2 | 35.4 | 25.2 | 24.7 | 16.9 |
| Average daytime temperature (°C) | 3.2 | 4.0 | 12.9 | 17.2 | 20.7 | 24.7 | 29.7 | 34.9 | 28.6 | 19.1 | 13.9 | 8.3 |
| Average temperature (°C) | 0.0 | 0.6 | 6.0 | 10.6 | 15.0 | 20.0 | 24.9 | 28.2 | 23.6 | 14.1 | 9.2 | 4.0 |
| Average night temperature (°C) | -2.8 | -2.3 | 0.5 | 5.3 | 9.9 | 16.3 | 21.0 | 23.5 | 20.3 | 10.4 | 5.5 | 1.0 |
| Absolute minimum temperature (°C) | -8.5 | -8.9 | -6.2 | -2.0 | 1.4 | 10.1 | 16.5 | 21.1 | 13.3 | 6.8 | 1.1 | -6.3 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.4 | 5.5 | 7.8 | 8.1 | 8.6 | 7.7 | 9.8 | 11.7 | 8.0 | 8.5 | 5.8 | 4.5 |
| Precipitation (mm) | 197 | 159 | 96 | 97 | 144 | 249 | 131 | 69 | 158 | 101 | 227 | 195 |
| Sunny days | 3 | 2 | 11 | 11 | 14 | 5 | 4 | 3 | 6 | 10 | 8 | 1 |
| Rainy days | 14 | 14 | 20 | 19 | 17 | 25 | 27 | 28 | 24 | 21 | 22 | 25 |
| Snow days | 14 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 |
The best time to visit Sanpōbun during the most sunny months:
The largest precipitation sum in Sanpōbun is at