Average annual temperature is 14.6 °C
Absolute maximum temperature: 35.1 °C
Absolute minimum temperature: -12.5 °C
Number of sunny days: 137 days
Number of rainy days: 223 days
Number of snow days: 5 days
Look at detailed online map of Nantan
* Weather data for Nantan 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) | 14.6 | 15.3 | 22.2 | 25.8 | 29.6 | 30.0 | 34.6 | 35.1 | 34.7 | 25.9 | 24.1 | 18.4 |
| Average daytime temperature (°C) | 7.0 | 8.0 | 15.0 | 17.6 | 21.8 | 25.5 | 31.1 | 32.3 | 30.0 | 20.6 | 15.9 | 10.7 |
| Average temperature (°C) | 2.1 | 3.6 | 9.1 | 12.3 | 16.5 | 20.8 | 25.8 | 27.2 | 24.6 | 15.5 | 10.8 | 5.8 |
| Average night temperature (°C) | -2.1 | 0.2 | 4.4 | 7.8 | 12.2 | 16.9 | 21.8 | 23.6 | 20.9 | 11.4 | 6.8 | 1.9 |
| Absolute minimum temperature (°C) | -12.5 | -3.1 | -1.9 | 1.6 | 5.2 | 10.3 | 17.7 | 21.8 | 15.3 | 6.5 | 0.7 | -3.9 |
| 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 | 14.3 | 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) | 6.5 | 5.7 | 8.3 | 7.8 | 9.2 | 6.8 | 9.4 | 10.3 | 9.7 | 8.9 | 7.2 | 6.8 |
| Precipitation (mm) | 61 | 51 | 108 | 208 | 214 | 246 | 122 | 174 | 82 | 39 | 104 | 45 |
| Sunny days | 9 | 9 | 17 | 15 | 15 | 9 | 9 | 2 | 7 | 14 | 15 | 16 |
| Rainy days | 20 | 16 | 14 | 15 | 16 | 21 | 22 | 29 | 23 | 17 | 15 | 15 |
| Snow days | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Nantan during the most sunny months:
The largest precipitation sum in Nantan is at