Average annual temperature is 13.1 °C
Absolute maximum temperature: 34.4 °C
Absolute minimum temperature: -16.2 °C
Number of sunny days: 192 days
Number of rainy days: 167 days
Number of snow days: 6 days
Look at detailed online map of Ongjŏm
* Weather data for Ongjŏm 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) | 13.9 | 12.7 | 23.1 | 26.5 | 31.9 | 32.4 | 33.5 | 34.4 | 29.1 | 21.5 | 23.2 | 16.1 |
| Average daytime temperature (°C) | 3.4 | 7.5 | 16.2 | 18.2 | 23.3 | 27.8 | 29.3 | 29.8 | 25.3 | 18.9 | 11.1 | 5.4 |
| Average temperature (°C) | -1.1 | 2.0 | 9.4 | 12.4 | 17.8 | 22.2 | 25.1 | 25.8 | 21.6 | 13.7 | 6.2 | 1.2 |
| Average night temperature (°C) | -5.2 | -2.3 | 3.3 | 7.0 | 12.7 | 17.8 | 21.8 | 22.6 | 18.2 | 9.2 | 1.6 | -2.4 |
| Absolute minimum temperature (°C) | -16.2 | -7.0 | -3.9 | 0.7 | 3.8 | 13.6 | 18.0 | 18.7 | 13.1 | 3.9 | -7.1 | -12.8 |
| 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 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 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) | 7.4 | 7.4 | 9.2 | 8.3 | 8.9 | 9.5 | 7.9 | 9.6 | 7.3 | 8.5 | 7.8 | 6.8 |
| Precipitation (mm) | 27 | 11 | 60 | 78 | 163 | 241 | 320 | 206 | 188 | 8 | 44 | 84 |
| Sunny days | 24 | 21 | 24 | 16 | 16 | 10 | 5 | 7 | 8 | 22 | 18 | 21 |
| Rainy days | 4 | 6 | 7 | 14 | 15 | 20 | 26 | 24 | 22 | 9 | 11 | 9 |
| Snow days | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The largest precipitation sum in Ongjŏm is at