Average annual temperature is 14.7 °C
Absolute maximum temperature: 33.9 °C
Absolute minimum temperature: -10.8 °C
Number of sunny days: 180 days
Number of rainy days: 182 days
Number of snow days: 3 days
Look at detailed online map of Ŏsŏ
* Weather data for Ŏsŏ 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) | 15.3 | 13.7 | 22.9 | 24.1 | 24.7 | 30.9 | 31.3 | 33.9 | 30.7 | 24.1 | 25.4 | 18.9 |
| Average daytime temperature (°C) | 6.5 | 9.3 | 16.1 | 18.0 | 21.3 | 26.2 | 28.1 | 30.3 | 27.1 | 21.1 | 13.9 | 8.9 |
| Average temperature (°C) | 2.0 | 3.9 | 10.1 | 13.3 | 17.6 | 22.2 | 25.3 | 26.7 | 23.6 | 16.4 | 9.6 | 4.8 |
| Average night temperature (°C) | -2.1 | -0.1 | 5.3 | 9.2 | 14.3 | 19.0 | 23.1 | 23.9 | 20.8 | 12.4 | 5.8 | 1.4 |
| Absolute minimum temperature (°C) | -10.8 | -3.9 | -1.3 | 3.0 | 8.9 | 15.6 | 19.2 | 19.9 | 15.6 | 7.2 | -1.6 | -7.0 |
| 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 | 10.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.5 | 7.1 | 8.5 | 7.5 | 7.2 | 8.1 | 5.9 | 10.6 | 8.2 | 8.7 | 7.6 | 6.0 |
| Precipitation (mm) | 42 | 44 | 43 | 147 | 263 | 176 | 356 | 312 | 145 | 19 | 82 | 79 |
| Sunny days | 23 | 19 | 24 | 14 | 12 | 10 | 2 | 6 | 9 | 21 | 19 | 21 |
| Rainy days | 7 | 9 | 7 | 16 | 19 | 20 | 29 | 25 | 21 | 10 | 11 | 8 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The best time to visit Ŏsŏ during the most sunny months:
The largest precipitation sum in Ŏsŏ is at