Average annual temperature is 12.1 °C
Absolute maximum temperature: 33.4 °C
Absolute minimum temperature: -17.2 °C
Number of sunny days: 192 days
Number of rainy days: 156 days
Number of snow days: 17 days
Look at detailed online map of Tongwŏn
* Weather data for Tongwŏn 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) | 10.2 | 10.8 | 22.0 | 23.9 | 28.2 | 32.9 | 32.2 | 33.4 | 30.1 | 23.1 | 23.6 | 15.6 |
| Average daytime temperature (°C) | 0.6 | 5.3 | 13.2 | 17.5 | 23.7 | 27.2 | 29.5 | 29.2 | 26.4 | 19.6 | 8.9 | 2.9 |
| Average temperature (°C) | -3.9 | -0.2 | 6.6 | 11.8 | 17.9 | 21.9 | 25.5 | 25.4 | 21.6 | 14.3 | 4.6 | -1.1 |
| Average night temperature (°C) | -8.4 | -4.0 | 1.2 | 7.1 | 12.7 | 17.4 | 22.1 | 22.2 | 17.8 | 10.1 | 0.6 | -4.9 |
| Absolute minimum temperature (°C) | -17.2 | -6.6 | -4.2 | 1.9 | 7.2 | 12.8 | 19.1 | 16.9 | 11.6 | 5.1 | -7.2 | -14.0 |
| 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) | 7.1 | 8.3 | 9.1 | 7.8 | 8.9 | 9.4 | 8.6 | 8.2 | 8.4 | 8.6 | 6.3 | 5.0 |
| Precipitation (mm) | 27 | 4 | 20 | 69 | 116 | 147 | 210 | 235 | 52 | 28 | 103 | 89 |
| Sunny days | 20 | 27 | 25 | 16 | 20 | 9 | 11 | 7 | 10 | 20 | 13 | 14 |
| Rainy days | 5 | 1 | 5 | 14 | 11 | 21 | 20 | 24 | 20 | 11 | 14 | 10 |
| Snow days | 6 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 7 |
The largest precipitation sum in Tongwŏn is at