Average annual temperature is 13.9 °C
Absolute maximum temperature: 35.4 °C
Absolute minimum temperature: -14.0 °C
Number of sunny days: 194 days
Number of rainy days: 167 days
Number of snow days: 4 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) | 15.4 | 14.8 | 22.7 | 26.2 | 31.8 | 31.5 | 33.0 | 35.4 | 29.5 | 24.5 | 25.4 | 18.2 |
| Average daytime temperature (°C) | 5.0 | 7.4 | 14.7 | 17.8 | 22.2 | 26.3 | 29.6 | 29.1 | 24.8 | 19.9 | 13.1 | 6.8 |
| Average temperature (°C) | 0.6 | 2.9 | 9.3 | 13.0 | 18.0 | 22.3 | 26.0 | 25.9 | 21.9 | 15.0 | 8.3 | 2.7 |
| Average night temperature (°C) | -3.3 | -0.7 | 4.3 | 8.4 | 13.7 | 18.6 | 23.0 | 23.1 | 19.1 | 10.8 | 4.2 | -0.5 |
| Absolute minimum temperature (°C) | -14.0 | -5.1 | -2.2 | 3.9 | 8.1 | 15.6 | 18.5 | 17.2 | 12.7 | 5.3 | -4.8 | -11.1 |
| 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 | 14.5 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| 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) | 7.4 | 7.5 | 8.8 | 8.8 | 8.9 | 10.2 | 8.2 | 8.6 | 7.2 | 8.4 | 7.5 | 6.5 |
| Precipitation (mm) | 75 | 61 | 31 | 72 | 111 | 155 | 316 | 303 | 245 | 34 | 48 | 170 |
| Sunny days | 23 | 19 | 23 | 14 | 14 | 10 | 10 | 8 | 10 | 19 | 23 | 21 |
| Rainy days | 8 | 7 | 8 | 16 | 17 | 20 | 21 | 23 | 20 | 12 | 6 | 9 |
| Snow days | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The largest precipitation sum in Onggijŏm is at