Average annual temperature is 14.8 °C
Absolute maximum temperature: 35.7 °C
Absolute minimum temperature: -12.9 °C
Number of sunny days: 213 days
Number of rainy days: 151 days
Number of snow days: 1 day
Look at detailed online map of Onggijŏm
* Weather data for Onggijŏm 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) | 16.4 | 16.0 | 22.5 | 27.2 | 30.8 | 31.0 | 33.6 | 35.7 | 30.5 | 24.3 | 25.3 | 18.5 |
| Average daytime temperature (°C) | 6.0 | 8.0 | 14.7 | 17.7 | 22.0 | 25.9 | 29.0 | 29.0 | 25.1 | 20.2 | 13.6 | 7.5 |
| Average temperature (°C) | 2.1 | 4.3 | 10.6 | 13.6 | 18.5 | 22.6 | 26.1 | 26.3 | 22.6 | 16.3 | 9.6 | 4.0 |
| Average night temperature (°C) | -1.3 | 1.1 | 6.5 | 9.9 | 15.2 | 19.7 | 23.8 | 24.0 | 20.3 | 12.7 | 5.9 | 1.1 |
| Absolute minimum temperature (°C) | -12.9 | -2.6 | -1.8 | 4.8 | 10.1 | 15.2 | 19.8 | 20.7 | 15.7 | 8.0 | -4.1 | -9.6 |
| 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) | 10.0 | 10.8 | 12.0 | 13.1 | 14.1 | 14.7 | 14.4 | 13.5 | 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) | 7.5 | 7.6 | 8.9 | 9.0 | 8.9 | 10.2 | 8.4 | 9.3 | 7.4 | 8.6 | 7.7 | 7.0 |
| Precipitation (mm) | 49 | 46 | 43 | 62 | 137 | 133 | 347 | 290 | 278 | 14 | 38 | 148 |
| Sunny days | 25 | 18 | 24 | 18 | 20 | 13 | 10 | 7 | 10 | 22 | 22 | 24 |
| Rainy days | 6 | 9 | 7 | 12 | 11 | 17 | 21 | 24 | 20 | 9 | 8 | 7 |
| Snow days | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Onggijŏm is at