Average annual temperature is 17.1 °C
Absolute maximum temperature: 33.5 °C
Absolute minimum temperature: -3.2 °C
Number of sunny days: 162 days
Number of rainy days: 202 days
Number of snow days: 1 day
Look at detailed online map of Ariigawa
* Weather data for Ariigawa 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) | 19.6 | 18.0 | 24.7 | 23.5 | 28.2 | 30.2 | 32.6 | 33.5 | 33.2 | 27.2 | 25.6 | 22.5 |
| Average daytime temperature (°C) | 11.2 | 12.9 | 17.4 | 19.5 | 22.6 | 25.7 | 29.6 | 29.2 | 29.2 | 23.4 | 18.7 | 13.4 |
| Average temperature (°C) | 6.7 | 8.1 | 12.9 | 15.7 | 18.9 | 22.3 | 26.6 | 26.6 | 25.7 | 18.3 | 14.1 | 9.1 |
| Average night temperature (°C) | 3.3 | 3.8 | 8.8 | 12.0 | 15.4 | 19.5 | 24.1 | 24.5 | 22.9 | 14.2 | 10.7 | 5.7 |
| Absolute minimum temperature (°C) | -3.2 | -2.1 | -0.3 | 5.7 | 7.6 | 15.2 | 20.3 | 23.3 | 20.5 | 9.1 | 5.7 | 0.0 |
| 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) | 10.3 | 11.0 | 12.0 | 13.0 | 13.9 | 14.3 | 14.1 | 13.3 | 12.4 | 11.4 | 10.5 | 10.0 |
| Daylight minimum duration (h) | 10.0 | 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) | 7.3 | 6.9 | 7.8 | 8.1 | 8.9 | 6.0 | 9.9 | 8.5 | 9.7 | 8.7 | 8.1 | 7.4 |
| Precipitation (mm) | 80 | 71 | 203 | 217 | 235 | 436 | 96 | 399 | 127 | 29 | 47 | 77 |
| Sunny days | 20 | 17 | 17 | 15 | 12 | 9 | 4 | 3 | 5 | 23 | 19 | 18 |
| Rainy days | 11 | 11 | 14 | 15 | 19 | 21 | 27 | 28 | 25 | 8 | 11 | 12 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Ariigawa is at