Average annual temperature is 12.0 °C
Absolute maximum temperature: 32.6 °C
Absolute minimum temperature: -18.3 °C
Number of sunny days: 176 days
Number of rainy days: 174 days
Number of snow days: 15 days
Look at detailed online map of Swinsŏm
* Weather data for Swinsŏm 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) | 12.5 | 11.6 | 21.2 | 24.3 | 29.4 | 31.3 | 31.8 | 32.6 | 28.3 | 20.3 | 22.6 | 16.0 |
| Average daytime temperature (°C) | 1.6 | 5.8 | 14.2 | 16.8 | 21.8 | 26.3 | 27.9 | 28.8 | 24.6 | 17.7 | 9.3 | 3.7 |
| Average temperature (°C) | -2.7 | 0.6 | 8.1 | 11.1 | 16.9 | 21.2 | 24.1 | 24.7 | 20.8 | 13.0 | 4.9 | 0.1 |
| Average night temperature (°C) | -6.5 | -3.0 | 3.1 | 6.3 | 12.4 | 17.0 | 21.2 | 21.5 | 17.6 | 9.2 | 0.7 | -3.3 |
| Absolute minimum temperature (°C) | -18.3 | -8.2 | -4.8 | -1.1 | 4.9 | 13.5 | 16.6 | 17.0 | 12.4 | 3.5 | -9.8 | -15.7 |
| 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) | 7.3 | 7.6 | 9.1 | 7.7 | 8.3 | 9.9 | 7.3 | 8.7 | 7.2 | 8.6 | 7.4 | 5.9 |
| Precipitation (mm) | 34 | 8 | 31 | 69 | 164 | 260 | 534 | 332 | 272 | 16 | 64 | 108 |
| Sunny days | 19 | 21 | 22 | 13 | 18 | 8 | 2 | 4 | 9 | 25 | 17 | 18 |
| Rainy days | 6 | 4 | 9 | 17 | 13 | 22 | 29 | 27 | 21 | 6 | 12 | 8 |
| Snow days | 6 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
The best time to visit Swinsŏm during the most sunny months:
The largest precipitation sum in Swinsŏm is at