Seoul Climate: Weather by Month and Best Time to Visit
Best months for Seoul: May, October, September, June.
Year at a glance
Weather by month
| Month | Avg high | Avg low | Rainfall | Rainy days | Humidity | Sunshine | Score |
|---|---|---|---|---|---|---|---|
| January | 2°C | -7°C | 19 mm | 4 | – | – | 4.8 |
| February | 5°C | -5°C | 26 mm | 4 | – | – | 5.3 |
| March | 11°C | 0°C | 38 mm | 6 | – | – | 6.4 |
| April | 18°C | 6°C | 70 mm | 7 | – | – | 7.4 |
| May | 23°C | 12°C | 96 mm | 8 | – | – | 8.0 |
| June | 27°C | 18°C | 134 mm | 9 | – | – | 7.6 |
| July | 28°C | 22°C | 311 mm | 17 | – | – | 6.1 |
| August | 29°C | 22°C | 254 mm | 15 | – | – | 6.1 |
| September | 26°C | 16°C | 123 mm | 8 | – | – | 7.8 |
| October | 20°C | 9°C | 54 mm | 5 | – | – | 8.0 |
| November | 12°C | 2°C | 47 mm | 7 | – | – | 6.4 |
| December | 4°C | -5°C | 23 mm | 5 | – | – | 5.1 |