Average annual temperature is 16.4 °C
Absolute maximum temperature: 39.1 °C
Absolute minimum temperature: -4.9 °C
Number of sunny days: 171 days
Number of rainy days: 191 days
Number of snow days: 3 days
Look at detailed online map of Koga
* Weather data for Koga 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) | 13.7 | 18.2 | 25.5 | 28.4 | 32.9 | 31.6 | 39.1 | 38.1 | 35.8 | 27.6 | 25.9 | 19.3 |
| Average daytime temperature (°C) | 9.0 | 11.2 | 17.7 | 21.3 | 23.9 | 26.9 | 32.9 | 34.2 | 30.9 | 22.8 | 18.0 | 13.1 |
| Average temperature (°C) | 3.5 | 5.4 | 11.7 | 15.2 | 18.0 | 22.4 | 27.7 | 28.8 | 26.1 | 17.4 | 12.4 | 7.0 |
| Average night temperature (°C) | -0.8 | 0.6 | 6.7 | 10.0 | 13.2 | 18.8 | 23.3 | 25.0 | 22.7 | 12.9 | 7.9 | 2.4 |
| Absolute minimum temperature (°C) | -4.8 | -4.9 | 0.4 | 2.4 | 6.7 | 14.0 | 20.7 | 23.3 | 16.4 | 8.2 | 2.9 | -3.2 |
| 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) | 10.0 | 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 | 7.9 | 8.9 | 9.2 | 7.7 | 10.2 | 10.8 | 8.8 | 8.3 | 7.4 | 7.6 |
| Precipitation (mm) | 17 | 36 | 113 | 55 | 191 | 325 | 68 | 175 | 180 | 102 | 53 | 20 |
| Sunny days | 21 | 20 | 15 | 14 | 14 | 6 | 13 | 4 | 4 | 17 | 19 | 24 |
| Rainy days | 9 | 6 | 16 | 16 | 17 | 24 | 18 | 27 | 26 | 14 | 11 | 7 |
| Snow days | 1 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Koga during the most sunny months:
The largest precipitation sum in Koga is at