Average annual temperature is 9.5 °C
Absolute maximum temperature: 32.0 °C
Absolute minimum temperature: -16.4 °C
Number of sunny days: 91 days
Number of rainy days: 212 days
Number of snow days: 62 days
Look at detailed online map of Mattatsu
* Weather data for Mattatsu 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) | 6.4 | 5.9 | 17.2 | 19.0 | 24.8 | 25.6 | 31.5 | 32.0 | 30.5 | 20.5 | 19.0 | 10.5 |
| Average daytime temperature (°C) | -1.4 | -0.4 | 8.8 | 13.0 | 17.0 | 21.3 | 25.8 | 29.4 | 24.0 | 15.4 | 9.4 | 2.4 |
| Average temperature (°C) | -4.9 | -3.9 | 3.5 | 7.9 | 11.9 | 17.2 | 21.7 | 24.9 | 19.8 | 10.8 | 5.6 | -0.9 |
| Average night temperature (°C) | -8.4 | -7.1 | -0.6 | 4.0 | 7.9 | 14.2 | 18.7 | 21.9 | 16.9 | 7.7 | 2.7 | -3.8 |
| Absolute minimum temperature (°C) | -16.4 | -13.4 | -10.8 | -2.0 | -1.1 | 8.4 | 12.6 | 19.4 | 9.0 | 1.1 | -6.4 | -9.1 |
| 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 | 15.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.4 |
| 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) | 5.6 | 6.7 | 8.6 | 8.9 | 8.7 | 8.5 | 9.5 | 11.1 | 7.6 | 8.3 | 5.4 | 4.9 |
| Precipitation (mm) | 78 | 63 | 82 | 116 | 113 | 131 | 134 | 50 | 156 | 88 | 133 | 104 |
| Sunny days | 4 | 4 | 17 | 11 | 7 | 7 | 6 | 8 | 3 | 9 | 7 | 8 |
| Rainy days | 3 | 4 | 11 | 19 | 24 | 23 | 25 | 23 | 27 | 22 | 20 | 11 |
| Snow days | 24 | 20 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 12 |
The best time to visit Mattatsu during the most sunny months:
The largest precipitation sum in Mattatsu is at