Average annual temperature is 13.8 °C
Absolute maximum temperature: 36.1 °C
Absolute minimum temperature: -13.8 °C
Number of sunny days: 178 days
Number of rainy days: 178 days
Number of snow days: 9 days
Look at detailed online map of Tongmyŏn
* Weather data for Tongmyŏn 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) | 14.7 | 11.9 | 25.9 | 27.7 | 31.2 | 36.1 | 32.5 | 35.2 | 30.8 | 22.6 | 24.8 | 18.2 |
| Average daytime temperature (°C) | 4.5 | 7.9 | 16.9 | 19.5 | 24.3 | 28.5 | 28.9 | 30.5 | 26.7 | 20.2 | 12.3 | 6.8 |
| Average temperature (°C) | -0.4 | 1.9 | 9.3 | 13.2 | 18.4 | 22.7 | 25.3 | 26.4 | 22.5 | 14.6 | 7.7 | 2.9 |
| Average night temperature (°C) | -4.7 | -2.7 | 3.1 | 7.8 | 13.5 | 18.3 | 22.6 | 23.1 | 19.1 | 9.8 | 3.2 | -0.8 |
| Absolute minimum temperature (°C) | -13.8 | -6.5 | -4.6 | 0.5 | 4.9 | 14.1 | 20.7 | 17.9 | 13.9 | 4.8 | -5.3 | -11.2 |
| 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 | 14.6 | 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) | 7.2 | 7.4 | 9.1 | 7.8 | 8.3 | 9.8 | 7.0 | 9.4 | 7.4 | 8.7 | 7.0 | 5.6 |
| Precipitation (mm) | 45 | 7 | 22 | 69 | 155 | 248 | 669 | 362 | 226 | 18 | 85 | 135 |
| Sunny days | 19 | 21 | 23 | 14 | 16 | 12 | 2 | 6 | 10 | 24 | 16 | 15 |
| Rainy days | 10 | 6 | 8 | 16 | 15 | 18 | 29 | 25 | 20 | 7 | 13 | 11 |
| Snow days | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
The largest precipitation sum in Tongmyŏn is at