Average annual temperature is 12.8 °C
Absolute maximum temperature: 34.1 °C
Absolute minimum temperature: -18.6 °C
Number of sunny days: 181 days
Number of rainy days: 171 days
Number of snow days: 13 days
Look at detailed online map of Onnamu-gol
* Weather data for Onnamu-gol South Korea is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 12.6 | 10.6 | 23.8 | 25.2 | 32.0 | 32.8 | 33.6 | 34.1 | 30.5 | 21.7 | 23.3 | 16.9 |
| Average daytime temperature (°C) | 1.5 | 6.6 | 15.1 | 18.3 | 24.1 | 27.3 | 29.4 | 30.3 | 26.1 | 18.6 | 10.0 | 4.4 |
| Average temperature (°C) | -2.8 | 1.2 | 8.7 | 12.5 | 18.4 | 22.3 | 25.3 | 26.0 | 22.1 | 13.6 | 5.3 | 0.6 |
| Average night temperature (°C) | -7.4 | -2.7 | 3.1 | 7.3 | 13.5 | 17.8 | 22.2 | 22.4 | 18.5 | 9.2 | 1.1 | -2.8 |
| Absolute minimum temperature (°C) | -18.6 | -7.4 | -4.4 | 0.1 | 4.4 | 13.4 | 19.3 | 17.4 | 11.3 | 3.5 | -8.2 | -14.2 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.4 | 13.6 | 12.4 | 11.2 | 10.2 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.0 | 8.1 | 9.3 | 7.8 | 9.0 | 9.8 | 7.4 | 8.9 | 7.3 | 8.2 | 7.3 | 5.9 |
| Precipitation (mm) | 31 | 3 | 26 | 81 | 118 | 210 | 585 | 364 | 207 | 18 | 96 | 91 |
| Sunny days | 19 | 23 | 21 | 14 | 22 | 9 | 5 | 6 | 7 | 21 | 17 | 17 |
| Rainy days | 7 | 4 | 10 | 16 | 9 | 21 | 26 | 25 | 23 | 10 | 11 | 9 |
| Snow days | 5 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
The largest precipitation sum in Onnamu-gol is at