Average annual temperature is 14.7 °C
Absolute maximum temperature: 33.7 °C
Absolute minimum temperature: -10.5 °C
Number of sunny days: 113 days
Number of rainy days: 234 days
Number of snow days: 18 days
Look at detailed online map of Ashiu
* Weather data for Ashiu 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) | 14.5 | 14.9 | 23.4 | 25.8 | 29.2 | 29.6 | 33.3 | 33.7 | 32.6 | 25.0 | 23.7 | 17.8 |
| Average daytime temperature (°C) | 5.9 | 6.6 | 13.9 | 16.8 | 20.8 | 24.9 | 30.1 | 31.3 | 28.5 | 19.6 | 15.2 | 10.0 |
| Average temperature (°C) | 2.2 | 3.3 | 9.4 | 12.4 | 16.6 | 21.1 | 25.8 | 27.1 | 24.3 | 15.7 | 11.2 | 6.1 |
| Average night temperature (°C) | -0.7 | 0.6 | 6.0 | 9.1 | 13.4 | 18.2 | 22.6 | 24.2 | 21.5 | 12.9 | 8.3 | 3.0 |
| Absolute minimum temperature (°C) | -10.5 | -4.4 | 0.6 | 4.0 | 8.2 | 13.5 | 18.9 | 21.9 | 16.5 | 7.2 | 1.7 | -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) | 5.9 | 4.8 | 8.1 | 7.6 | 8.6 | 6.8 | 9.3 | 10.0 | 9.2 | 8.8 | 7.2 | 6.5 |
| Precipitation (mm) | 153 | 81 | 113 | 187 | 262 | 258 | 162 | 157 | 100 | 72 | 137 | 71 |
| Sunny days | 4 | 7 | 18 | 12 | 15 | 9 | 8 | 3 | 6 | 10 | 10 | 11 |
| Rainy days | 19 | 14 | 13 | 18 | 16 | 21 | 23 | 28 | 24 | 21 | 20 | 17 |
| Snow days | 8 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The best time to visit Ashiu during the most sunny months:
The largest precipitation sum in Ashiu is at