Average annual temperature is 14.7 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: -12.8 °C
Number of sunny days: 194 days
Number of rainy days: 167 days
Number of snow days: 4 days
Look at detailed online map of Sillyong
* Weather data for Sillyong 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) | 17.1 | 14.6 | 24.4 | 27.5 | 27.7 | 31.3 | 34.0 | 34.6 | 29.8 | 23.9 | 26.5 | 19.8 |
| Average daytime temperature (°C) | 6.9 | 10.4 | 17.1 | 19.0 | 22.5 | 27.1 | 29.2 | 30.8 | 27.1 | 21.5 | 14.8 | 9.1 |
| Average temperature (°C) | 1.2 | 4.5 | 10.8 | 13.7 | 17.8 | 22.4 | 25.6 | 27.1 | 23.3 | 15.6 | 9.1 | 4.0 |
| Average night temperature (°C) | -3.3 | -0.6 | 5.5 | 8.8 | 13.8 | 18.7 | 22.8 | 24.0 | 19.9 | 10.6 | 4.1 | -0.3 |
| Absolute minimum temperature (°C) | -12.8 | -5.0 | -3.2 | 2.2 | 7.5 | 15.1 | 19.4 | 21.8 | 16.1 | 5.0 | -4.2 | -8.5 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 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) | 7.9 | 7.7 | 8.9 | 7.9 | 7.7 | 8.7 | 7.0 | 9.5 | 7.4 | 8.7 | 8.1 | 6.9 |
| Precipitation (mm) | 69 | 43 | 68 | 97 | 287 | 203 | 273 | 309 | 286 | 8 | 29 | 91 |
| Sunny days | 26 | 20 | 21 | 17 | 14 | 10 | 3 | 8 | 7 | 23 | 24 | 21 |
| Rainy days | 4 | 8 | 10 | 13 | 17 | 20 | 28 | 23 | 23 | 8 | 6 | 7 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The largest precipitation sum in Sillyong is at