Average annual temperature is 12.9 °C
Absolute maximum temperature: 33.8 °C
Absolute minimum temperature: -15.3 °C
Number of sunny days: 150 days
Number of rainy days: 197 days
Number of snow days: 18 days
Look at detailed online map of Tongmyŏng
* Weather data for Tongmyŏng 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) | 15.0 | 12.3 | 21.4 | 24.4 | 29.0 | 31.1 | 31.9 | 33.8 | 29.2 | 21.3 | 22.7 | 17.6 |
| Average daytime temperature (°C) | 3.2 | 7.0 | 14.7 | 17.1 | 21.7 | 26.3 | 28.1 | 29.6 | 25.8 | 18.8 | 10.9 | 5.6 |
| Average temperature (°C) | -0.8 | 1.9 | 8.9 | 11.9 | 17.2 | 21.4 | 24.6 | 25.5 | 21.7 | 13.8 | 6.5 | 2.1 |
| Average night temperature (°C) | -4.6 | -1.7 | 4.5 | 7.5 | 13.4 | 17.6 | 21.9 | 22.2 | 18.5 | 9.6 | 2.5 | -1.0 |
| Absolute minimum temperature (°C) | -15.3 | -7.1 | -4.2 | -0.4 | 5.6 | 14.1 | 19.4 | 18.2 | 12.8 | 5.3 | -7.4 | -12.5 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.9 | 7.3 | 8.9 | 7.6 | 8.2 | 9.3 | 6.8 | 9.3 | 7.6 | 8.8 | 7.3 | 5.8 |
| Precipitation (mm) | 40 | 17 | 56 | 118 | 134 | 177 | 486 | 337 | 153 | 15 | 99 | 136 |
| Sunny days | 14 | 19 | 19 | 13 | 14 | 8 | 1 | 4 | 10 | 20 | 15 | 13 |
| Rainy days | 7 | 7 | 12 | 17 | 17 | 22 | 30 | 27 | 20 | 11 | 14 | 13 |
| Snow days | 10 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
The largest precipitation sum in Tongmyŏng is at