Average annual temperature is 17.7 °C
Absolute maximum temperature: 35.9 °C
Absolute minimum temperature: -2.9 °C
Number of sunny days: 158 days
Number of rainy days: 206 days
Number of snow days: 1 day
Look at detailed online map of Keya
* Weather data for Keya 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 | 17.3 | 23.9 | 25.1 | 28.0 | 31.2 | 34.2 | 35.9 | 33.5 | 28.2 | 26.4 | 22.2 |
| Average daytime temperature (°C) | 10.4 | 12.4 | 17.0 | 20.0 | 23.3 | 26.5 | 30.4 | 32.6 | 30.0 | 23.1 | 18.0 | 12.9 |
| Average temperature (°C) | 7.2 | 8.8 | 12.6 | 16.1 | 19.5 | 23.2 | 27.2 | 28.6 | 26.2 | 18.9 | 14.3 | 9.5 |
| Average night temperature (°C) | 4.3 | 5.6 | 9.0 | 12.6 | 16.4 | 20.4 | 24.9 | 25.7 | 23.3 | 15.3 | 11.0 | 6.5 |
| Absolute minimum temperature (°C) | -2.9 | 1.9 | 1.2 | 7.7 | 10.3 | 16.3 | 22.7 | 23.6 | 20.6 | 9.8 | 5.6 | 0.4 |
| 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 | 13.8 | 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) | 6.5 | 6.4 | 7.2 | 8.0 | 8.1 | 6.8 | 8.1 | 10.9 | 9.4 | 9.1 | 8.0 | 6.1 |
| Precipitation (mm) | 96 | 98 | 143 | 214 | 343 | 411 | 370 | 238 | 132 | 47 | 68 | 93 |
| Sunny days | 17 | 14 | 18 | 19 | 15 | 6 | 2 | 4 | 8 | 22 | 20 | 13 |
| Rainy days | 13 | 14 | 13 | 11 | 16 | 24 | 29 | 27 | 22 | 9 | 10 | 18 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Keya during the most sunny months:
The largest precipitation sum in Keya is at