Average annual temperature is 10.9 °C
Absolute maximum temperature: 32.1 °C
Absolute minimum temperature: -17.2 °C
Number of sunny days: 174 days
Number of rainy days: 163 days
Number of snow days: 28 days
Look at detailed online map of Tongsŏnam
* Weather data for Tongsŏnam North 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) | 7.9 | 9.1 | 18.9 | 22.0 | 25.9 | 30.9 | 30.8 | 32.1 | 29.7 | 21.8 | 22.0 | 14.0 |
| Average daytime temperature (°C) | -1.2 | 3.0 | 10.6 | 15.0 | 21.1 | 24.8 | 28.1 | 27.6 | 25.0 | 18.2 | 7.7 | 1.1 |
| Average temperature (°C) | -4.8 | -1.1 | 5.1 | 10.0 | 16.1 | 19.9 | 24.1 | 24.1 | 20.7 | 13.8 | 4.2 | -2.3 |
| Average night temperature (°C) | -9.2 | -4.3 | 0.9 | 6.2 | 12.0 | 16.1 | 21.2 | 21.3 | 17.1 | 10.4 | 0.8 | -5.9 |
| Absolute minimum temperature (°C) | -17.2 | -7.1 | -4.0 | 1.3 | 7.5 | 12.5 | 18.4 | 16.8 | 12.5 | 5.8 | -7.5 | -15.0 |
| 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 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.8 | 12.0 | 13.2 | 14.3 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.5 |
| 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) | 6.9 | 8.4 | 9.3 | 8.3 | 9.4 | 10.0 | 8.7 | 8.2 | 8.5 | 8.7 | 5.9 | 4.1 |
| Precipitation (mm) | 22 | 3 | 9 | 94 | 127 | 172 | 192 | 266 | 48 | 67 | 117 | 75 |
| Sunny days | 12 | 25 | 25 | 17 | 21 | 10 | 6 | 5 | 8 | 20 | 14 | 11 |
| Rainy days | 7 | 2 | 5 | 13 | 10 | 20 | 25 | 26 | 22 | 11 | 11 | 11 |
| Snow days | 12 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 9 |
The largest precipitation sum in Tongsŏnam is at