Average annual temperature is 14.9 °C
Absolute maximum temperature: 34.4 °C
Absolute minimum temperature: -9.7 °C
Number of sunny days: 147 days
Number of rainy days: 207 days
Number of snow days: 11 days
Look at detailed online map of Niimi
* Weather data for Niimi 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) | 15.4 | 15.7 | 22.3 | 26.5 | 30.6 | 30.7 | 34.3 | 34.4 | 32.5 | 25.9 | 25.2 | 19.6 |
| Average daytime temperature (°C) | 8.0 | 9.2 | 16.2 | 18.8 | 23.0 | 26.5 | 30.5 | 31.4 | 29.1 | 21.2 | 16.3 | 10.6 |
| Average temperature (°C) | 2.9 | 4.2 | 9.7 | 12.7 | 17.3 | 21.3 | 25.9 | 26.8 | 24.3 | 15.6 | 10.9 | 5.8 |
| Average night temperature (°C) | -0.7 | 0.4 | 4.6 | 7.9 | 12.9 | 17.4 | 21.9 | 23.7 | 21.0 | 11.1 | 6.9 | 2.0 |
| Absolute minimum temperature (°C) | -9.7 | -3.4 | -2.9 | 1.2 | 6.2 | 11.1 | 16.6 | 21.8 | 17.6 | 6.0 | -0.2 | -2.4 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.2 | 13.4 | 12.4 | 11.3 | 10.3 | 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) | 6.2 | 6.3 | 8.1 | 7.7 | 8.4 | 7.3 | 8.8 | 8.8 | 8.7 | 8.7 | 7.5 | 6.3 |
| Precipitation (mm) | 43 | 58 | 68 | 202 | 222 | 205 | 203 | 195 | 107 | 30 | 47 | 60 |
| Sunny days | 13 | 11 | 19 | 15 | 17 | 9 | 6 | 3 | 5 | 19 | 17 | 13 |
| Rainy days | 14 | 14 | 12 | 15 | 14 | 21 | 25 | 28 | 25 | 12 | 13 | 14 |
| Snow days | 4 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
The largest precipitation sum in Niimi is at