Average annual temperature is 14.5 °C
Absolute maximum temperature: 33.4 °C
Absolute minimum temperature: -8.7 °C
Number of sunny days: 186 days
Number of rainy days: 167 days
Number of snow days: 12 days
Look at detailed online map of Seulsan
* Weather data for Seulsan 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) | 10.5 | 7.3 | 13.7 | 18.4 | 21.1 | 26.4 | 31.5 | 33.4 | 29.6 | 22.9 | 23.0 | 16.7 |
| Average daytime temperature (°C) | 5.1 | 4.2 | 8.6 | 13.1 | 17.3 | 21.9 | 27.6 | 29.8 | 26.2 | 20.3 | 13.1 | 8.0 |
| Average temperature (°C) | 3.4 | 3.1 | 7.3 | 11.7 | 16.3 | 21.0 | 25.5 | 27.4 | 23.8 | 17.5 | 10.6 | 5.6 |
| Average night temperature (°C) | 0.8 | 1.6 | 5.9 | 10.2 | 15.2 | 19.9 | 23.8 | 25.2 | 21.5 | 14.4 | 7.4 | 2.7 |
| Absolute minimum temperature (°C) | -8.7 | -0.6 | 2.9 | 7.1 | 11.8 | 16.5 | 22.0 | 22.1 | 17.7 | 11.1 | -0.1 | -7.2 |
| 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) | 10.1 | 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) | 6.1 | 7.4 | 8.9 | 7.8 | 7.7 | 9.4 | 6.9 | 10.0 | 8.3 | 8.1 | 6.3 | 4.6 |
| Precipitation (mm) | 42 | 15 | 25 | 103 | 186 | 142 | 533 | 140 | 201 | 22 | 97 | 94 |
| Sunny days | 17 | 23 | 25 | 15 | 15 | 19 | 5 | 11 | 10 | 21 | 15 | 10 |
| Rainy days | 7 | 5 | 6 | 15 | 16 | 11 | 26 | 20 | 20 | 10 | 15 | 16 |
| Snow days | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 |
The best time to visit Seulsan during the most sunny months:
The largest precipitation sum in Seulsan is at