Average annual temperature is 15.7 °C
Absolute maximum temperature: 34.4 °C
Absolute minimum temperature: -5.9 °C
Number of sunny days: 146 days
Number of rainy days: 213 days
Number of snow days: 6 days
Look at detailed online map of Rittō
* Weather data for Rittō 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) | 14.8 | 15.4 | 22.0 | 24.8 | 29.9 | 30.2 | 34.4 | 34.1 | 33.3 | 24.9 | 24.8 | 18.8 |
| Average daytime temperature (°C) | 7.8 | 8.9 | 15.4 | 18.5 | 22.3 | 25.5 | 31.0 | 31.8 | 30.0 | 21.2 | 16.5 | 11.5 |
| Average temperature (°C) | 3.7 | 4.8 | 10.1 | 13.5 | 17.7 | 21.8 | 26.9 | 27.9 | 25.7 | 16.8 | 12.0 | 7.0 |
| Average night temperature (°C) | 0.5 | 1.6 | 5.7 | 9.1 | 13.6 | 18.7 | 23.2 | 24.8 | 22.2 | 13.1 | 8.4 | 3.5 |
| Absolute minimum temperature (°C) | -5.9 | -2.1 | 1.2 | 4.1 | 7.1 | 12.7 | 20.1 | 22.8 | 18.1 | 9.0 | 2.8 | -2.2 |
| 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 | 9.8 |
| 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) | 6.9 | 6.1 | 8.5 | 7.8 | 9.4 | 6.8 | 10.1 | 10.0 | 9.9 | 8.8 | 7.4 | 7.1 |
| Precipitation (mm) | 50 | 55 | 137 | 167 | 211 | 312 | 110 | 189 | 85 | 62 | 88 | 49 |
| Sunny days | 8 | 9 | 16 | 15 | 15 | 7 | 14 | 7 | 9 | 14 | 17 | 15 |
| Rainy days | 19 | 17 | 15 | 15 | 16 | 23 | 17 | 24 | 21 | 17 | 13 | 16 |
| Snow days | 4 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Rittō is at