Average annual temperature is 11.9 °C
Absolute maximum temperature: 32.8 °C
Absolute minimum temperature: -17.6 °C
Number of sunny days: 177 days
Number of rainy days: 176 days
Number of snow days: 12 days
Look at detailed online map of Onp’yŏng
* Weather data for Onp’yŏng 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 | 13.4 | 22.1 | 24.6 | 29.7 | 31.6 | 32.8 | 32.8 | 28.5 | 22.0 | 24.8 | 17.3 |
| Average daytime temperature (°C) | 2.7 | 6.4 | 14.7 | 17.3 | 21.7 | 26.8 | 28.3 | 29.0 | 24.7 | 18.3 | 10.7 | 4.8 |
| Average temperature (°C) | -2.1 | 0.7 | 7.8 | 11.1 | 16.3 | 21.2 | 23.9 | 24.6 | 20.5 | 12.8 | 5.4 | 0.3 |
| Average night temperature (°C) | -6.1 | -3.2 | 1.9 | 5.8 | 11.2 | 16.7 | 20.6 | 21.1 | 17.1 | 8.4 | 0.8 | -3.3 |
| Absolute minimum temperature (°C) | -17.6 | -8.3 | -4.4 | 0.0 | 3.4 | 11.7 | 16.9 | 17.8 | 11.7 | 3.2 | -8.7 | -13.9 |
| 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) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 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) | 7.1 | 7.4 | 8.8 | 8.1 | 8.2 | 10.0 | 7.2 | 9.1 | 7.3 | 8.9 | 7.5 | 6.1 |
| Precipitation (mm) | 45 | 16 | 49 | 68 | 126 | 132 | 390 | 335 | 192 | 9 | 64 | 113 |
| Sunny days | 21 | 19 | 19 | 15 | 14 | 11 | 4 | 4 | 11 | 24 | 18 | 17 |
| Rainy days | 7 | 5 | 12 | 15 | 17 | 19 | 27 | 27 | 19 | 7 | 12 | 9 |
| Snow days | 3 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 |
The largest precipitation sum in Onp’yŏng is at