Average annual temperature is 16.2 °C
Absolute maximum temperature: 35.4 °C
Absolute minimum temperature: -5.9 °C
Number of sunny days: 154 days
Number of rainy days: 208 days
Number of snow days: 3 days
Look at detailed online map of Sanbonmatsu
* Weather data for Sanbonmatsu 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) | 16.8 | 15.4 | 22.9 | 25.4 | 28.2 | 31.5 | 35.1 | 35.4 | 33.8 | 27.1 | 25.3 | 22.5 |
| Average daytime temperature (°C) | 8.9 | 9.4 | 15.8 | 18.8 | 22.7 | 25.9 | 31.1 | 31.6 | 30.0 | 22.3 | 17.2 | 11.9 |
| Average temperature (°C) | 4.9 | 5.5 | 10.8 | 14.1 | 18.2 | 22.1 | 26.9 | 27.5 | 25.6 | 17.9 | 12.7 | 7.7 |
| Average night temperature (°C) | 1.5 | 2.1 | 5.9 | 9.7 | 14.1 | 19.0 | 23.2 | 24.4 | 22.3 | 14.1 | 8.9 | 4.3 |
| Absolute minimum temperature (°C) | -5.9 | -2.2 | 0.8 | 3.8 | 9.9 | 13.3 | 21.0 | 22.0 | 19.5 | 9.2 | 3.4 | -1.2 |
| 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 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.2 | 6.9 | 8.5 | 8.1 | 9.2 | 6.7 | 10.2 | 9.9 | 9.8 | 8.5 | 7.4 | 7.4 |
| Precipitation (mm) | 47 | 45 | 94 | 153 | 203 | 306 | 109 | 324 | 88 | 29 | 101 | 45 |
| Sunny days | 16 | 11 | 20 | 15 | 16 | 7 | 7 | 3 | 7 | 19 | 16 | 17 |
| Rainy days | 14 | 15 | 11 | 15 | 15 | 23 | 24 | 28 | 23 | 12 | 14 | 14 |
| Snow days | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sanbonmatsu is at