Average annual temperature is 10.9 °C
Absolute maximum temperature: 31.8 °C
Absolute minimum temperature: -21.1 °C
Number of sunny days: 190 days
Number of rainy days: 158 days
Number of snow days: 17 days
Look at detailed online map of Isŏngmal
* Weather data for Isŏngmal 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) | 8.5 | 8.7 | 19.5 | 22.2 | 29.3 | 31.0 | 31.8 | 31.7 | 30.5 | 21.7 | 22.8 | 13.2 |
| Average daytime temperature (°C) | -1.6 | 3.9 | 11.6 | 16.4 | 22.6 | 25.6 | 28.7 | 28.3 | 26.1 | 18.5 | 6.8 | -0.2 |
| Average temperature (°C) | -6.0 | -1.0 | 5.3 | 10.9 | 17.1 | 21.0 | 24.8 | 24.9 | 21.5 | 13.4 | 2.6 | -4.1 |
| Average night temperature (°C) | -10.9 | -4.7 | 0.3 | 6.4 | 12.7 | 16.9 | 21.8 | 22.2 | 17.7 | 9.3 | -1.1 | -8.8 |
| Absolute minimum temperature (°C) | -21.1 | -8.2 | -5.9 | 0.9 | 7.3 | 13.0 | 19.6 | 17.3 | 11.6 | 2.8 | -8.1 | -20.9 |
| 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) | 9.7 | 10.7 | 12.0 | 13.2 | 14.3 | 14.9 | 14.6 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| 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 | 7.8 | 9.0 | 8.4 | 9.3 | 10.0 | 8.6 | 7.5 | 9.0 | 8.3 | 6.5 | 6.4 |
| Precipitation (mm) | 41 | 6 | 34 | 98 | 177 | 178 | 234 | 296 | 48 | 64 | 103 | 54 |
| Sunny days | 18 | 23 | 24 | 15 | 18 | 10 | 11 | 4 | 15 | 19 | 16 | 17 |
| Rainy days | 6 | 3 | 7 | 15 | 13 | 20 | 20 | 27 | 15 | 12 | 12 | 8 |
| Snow days | 7 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 6 |
The largest precipitation sum in Isŏngmal is at