Average annual temperature is 11.8 °C
Absolute maximum temperature: 33.4 °C
Absolute minimum temperature: -19.4 °C
Number of sunny days: 181 days
Number of rainy days: 168 days
Number of snow days: 16 days
Look at detailed online map of Tongŭn
* Weather data for Tongŭn 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) | 11.0 | 10.6 | 22.6 | 24.8 | 29.4 | 32.5 | 32.5 | 33.4 | 29.5 | 21.1 | 22.0 | 14.6 |
| Average daytime temperature (°C) | 0.9 | 5.8 | 14.1 | 17.0 | 22.7 | 26.1 | 28.7 | 29.2 | 25.4 | 17.8 | 8.7 | 2.9 |
| Average temperature (°C) | -3.4 | 0.4 | 7.8 | 11.2 | 17.2 | 21.2 | 24.7 | 25.0 | 21.1 | 12.9 | 4.1 | -0.9 |
| Average night temperature (°C) | -7.4 | -3.0 | 2.3 | 6.4 | 12.2 | 16.8 | 21.6 | 21.6 | 17.7 | 9.0 | 0.0 | -4.2 |
| Absolute minimum temperature (°C) | -19.4 | -7.5 | -5.5 | -1.3 | 4.5 | 12.1 | 18.1 | 16.5 | 11.6 | 2.6 | -9.4 | -16.2 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.2 | 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) | 7.1 | 8.2 | 9.0 | 7.5 | 9.1 | 9.5 | 8.0 | 8.2 | 7.4 | 7.9 | 7.1 | 6.0 |
| Precipitation (mm) | 59 | 3 | 21 | 114 | 153 | 270 | 380 | 362 | 186 | 22 | 97 | 92 |
| Sunny days | 20 | 25 | 21 | 13 | 19 | 9 | 5 | 6 | 9 | 20 | 15 | 19 |
| Rainy days | 3 | 0 | 10 | 17 | 12 | 21 | 26 | 25 | 21 | 11 | 13 | 9 |
| Snow days | 8 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3 |
The largest precipitation sum in Tongŭn is at