Average annual temperature is 13.9 °C
Absolute maximum temperature: 35.7 °C
Absolute minimum temperature: -12.7 °C
Number of sunny days: 196 days
Number of rainy days: 167 days
Number of snow days: 2 days
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) | 16.7 | 14.0 | 22.7 | 26.8 | 29.6 | 33.8 | 33.9 | 35.7 | 30.2 | 23.9 | 25.1 | 18.2 |
| Average daytime temperature (°C) | 6.2 | 9.4 | 17.0 | 18.8 | 22.9 | 28.2 | 29.1 | 30.6 | 26.8 | 21.2 | 13.6 | 7.9 |
| Average temperature (°C) | 0.5 | 3.4 | 10.0 | 12.8 | 17.5 | 22.4 | 24.9 | 26.2 | 22.3 | 15.0 | 7.9 | 2.8 |
| Average night temperature (°C) | -3.6 | -1.1 | 4.3 | 7.9 | 13.2 | 18.0 | 22.0 | 22.9 | 18.9 | 9.9 | 3.1 | -0.9 |
| Absolute minimum temperature (°C) | -12.7 | -5.7 | -3.3 | 1.5 | 6.9 | 14.1 | 17.9 | 20.5 | 14.7 | 4.4 | -4.7 | -10.4 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 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) | 7.8 | 7.4 | 8.6 | 7.8 | 7.6 | 8.9 | 6.8 | 9.3 | 7.4 | 8.5 | 8.0 | 6.8 |
| Precipitation (mm) | 46 | 27 | 68 | 96 | 196 | 183 | 292 | 365 | 212 | 11 | 73 | 82 |
| Sunny days | 26 | 19 | 22 | 15 | 14 | 12 | 3 | 4 | 10 | 24 | 23 | 24 |
| Rainy days | 4 | 9 | 9 | 15 | 17 | 18 | 28 | 27 | 20 | 7 | 7 | 6 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Onggijŏm is at