Average annual temperature is 12.8 °C
Absolute maximum temperature: 33.3 °C
Absolute minimum temperature: -17.1 °C
Number of sunny days: 182 days
Number of rainy days: 173 days
Number of snow days: 10 days
Look at detailed online map of Tonggwan
* Weather data for Tonggwan 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) | 12.1 | 12.2 | 22.1 | 25.0 | 30.4 | 32.2 | 32.6 | 33.3 | 29.0 | 21.0 | 23.6 | 17.3 |
| Average daytime temperature (°C) | 2.5 | 6.6 | 15.1 | 17.7 | 22.8 | 27.1 | 28.6 | 29.5 | 25.4 | 18.5 | 10.3 | 4.5 |
| Average temperature (°C) | -1.7 | 1.4 | 8.9 | 12.0 | 17.6 | 22.0 | 24.7 | 25.4 | 21.5 | 13.9 | 5.8 | 0.8 |
| Average night temperature (°C) | -5.5 | -2.3 | 3.5 | 7.1 | 13.1 | 17.8 | 21.8 | 22.2 | 18.4 | 10.0 | 1.5 | -2.6 |
| Absolute minimum temperature (°C) | -17.1 | -7.3 | -4.0 | -0.2 | 5.3 | 14.4 | 17.2 | 17.1 | 13.0 | 3.9 | -8.8 | -14.3 |
| 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) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.4 | 7.7 | 9.1 | 7.9 | 8.3 | 9.8 | 7.4 | 9.0 | 7.3 | 8.8 | 7.6 | 6.1 |
| Precipitation (mm) | 35 | 10 | 34 | 66 | 153 | 257 | 495 | 325 | 268 | 16 | 66 | 113 |
| Sunny days | 20 | 22 | 22 | 14 | 17 | 8 | 3 | 6 | 9 | 23 | 19 | 19 |
| Rainy days | 6 | 5 | 9 | 16 | 14 | 22 | 28 | 25 | 21 | 8 | 11 | 8 |
| Snow days | 5 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
The largest precipitation sum in Tonggwan is at