Average annual temperature is 11.9 °C
Absolute maximum temperature: 33.7 °C
Absolute minimum temperature: -16.1 °C
Number of sunny days: 182 days
Number of rainy days: 167 days
Number of snow days: 16 days
Look at detailed online map of Tonghyŏn
* Weather data for Tonghyŏn 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) | 9.6 | 9.5 | 19.0 | 22.2 | 28.1 | 30.7 | 32.4 | 33.7 | 30.6 | 23.6 | 22.6 | 14.7 |
| Average daytime temperature (°C) | 0.9 | 5.2 | 11.3 | 16.1 | 21.2 | 25.3 | 28.5 | 28.9 | 26.3 | 19.5 | 9.3 | 3.2 |
| Average temperature (°C) | -3.5 | -0.1 | 5.8 | 11.1 | 16.6 | 21.1 | 25.0 | 25.4 | 21.9 | 14.6 | 5.1 | -0.5 |
| Average night temperature (°C) | -7.6 | -3.8 | 1.3 | 7.1 | 12.6 | 17.6 | 22.3 | 22.4 | 18.3 | 10.7 | 1.4 | -4.0 |
| Absolute minimum temperature (°C) | -16.1 | -6.9 | -4.4 | 0.8 | 6.5 | 14.7 | 19.8 | 17.4 | 13.0 | 5.6 | -6.1 | -13.5 |
| 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) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.6 |
| 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) | 7.0 | 8.3 | 8.9 | 7.7 | 9.0 | 9.7 | 8.1 | 8.1 | 8.3 | 8.7 | 6.8 | 5.5 |
| Precipitation (mm) | 28 | 5 | 25 | 109 | 135 | 189 | 309 | 251 | 89 | 65 | 120 | 66 |
| Sunny days | 17 | 26 | 25 | 15 | 19 | 11 | 6 | 5 | 9 | 20 | 14 | 15 |
| Rainy days | 6 | 2 | 5 | 15 | 12 | 19 | 25 | 26 | 21 | 11 | 14 | 11 |
| Snow days | 8 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
The largest precipitation sum in Tonghyŏn is at