Average annual temperature is 16.5 °C
Absolute maximum temperature: 40.8 °C
Absolute minimum temperature: -4.7 °C
Number of sunny days: 168 days
Number of rainy days: 194 days
Number of snow days: 3 days
Look at detailed online map of Akaiwa
* Weather data for Akaiwa 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) | 14.1 | 18.2 | 24.8 | 29.6 | 32.6 | 32.3 | 40.8 | 39.4 | 35.1 | 27.2 | 28.1 | 19.5 |
| Average daytime temperature (°C) | 9.4 | 11.4 | 18.0 | 21.9 | 24.0 | 27.1 | 34.2 | 33.9 | 30.6 | 23.0 | 18.1 | 12.9 |
| Average temperature (°C) | 3.8 | 5.7 | 12.1 | 15.3 | 18.2 | 22.6 | 28.4 | 28.7 | 26.0 | 17.5 | 12.3 | 7.1 |
| Average night temperature (°C) | -0.4 | 1.0 | 6.8 | 10.0 | 13.4 | 18.9 | 23.9 | 24.9 | 22.7 | 13.2 | 7.7 | 2.8 |
| Absolute minimum temperature (°C) | -4.7 | -4.5 | 1.3 | 3.2 | 7.6 | 13.0 | 21.1 | 23.1 | 16.3 | 8.7 | 2.1 | -3.0 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.4 | 8.1 | 8.0 | 9.0 | 9.1 | 7.8 | 9.9 | 10.6 | 8.7 | 8.5 | 7.5 | 7.8 |
| Precipitation (mm) | 18 | 34 | 95 | 55 | 178 | 310 | 89 | 167 | 187 | 95 | 48 | 21 |
| Sunny days | 20 | 18 | 17 | 14 | 15 | 5 | 9 | 4 | 5 | 18 | 21 | 22 |
| Rainy days | 9 | 9 | 14 | 16 | 16 | 25 | 22 | 27 | 25 | 13 | 9 | 9 |
| Snow days | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Akaiwa is at