Seoul
South Korea
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 30 | 29 | 22 | 17 | 13 | 18 | 23 | 28 | 31 | 33 | 35 | 34 | 35 |
| Average high, °C | 22 | 18 | 11 | 6 | 2 | 3 | 7 | 14 | 18 | 21 | 24 | 25 | 14 |
| Average temperature, °C | 20 | 15 | 8 | 3 | 0 | 1 | 5 | 11 | 16 | 18 | 22 | 23 | 12 |
| Average low, °C | 17 | 11 | 5 | 0 | -3 | -2 | 2 | 7 | 12 | 16 | 20 | 21 | 9 |
| Record low, °C | 10 | 0 | -6 | -13 | -13 | -16 | -11 | -1 | 5 | 7 | 12 | 14 | -16 |
| Rain, days | 14 | 12 | 11 | 8 | 4 | 6 | 11 | 11 | 12 | 16 | 18 | 17 | 140 |
| Snow, days | 0 | 0 | 1 | 3 | 6 | 7 | 5 | 0 | 0 | 0 | 0 | 0 | 22 |
| Fog, days | 6 | 5 | 3 | 3 | 3 | 6 | 9 | 10 | 13 | 18 | 18 | 13 | 107 |
| Thunderstorms, days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 2 |
| Average precipitation, mm. | 206 | 90 | 63 | 45 | 54 | 60 | 57 | 74 | 78 | 103 | 218 | 278 | 1326 |
| Relative humidity morning, % | 82 | 70 | 62 | 57 | 54 | 60 | 67 | 68 | 73 | 84 | 87 | 87 | 71 |
| Relative humidity evening, % | 72 | 60 | 54 | 48 | 49 | 55 | 61 | 60 | 63 | 75 | 80 | 78 | 63 |
| Wind speed, km/h | 8 | 9 | 14 | 14 | 16 | 14 | 14 | 16 | 9 | 8 | 8 | 8 | 12 |
| Day Length, часов | 13 | 12 | 11 | 10 | 10 | 11 | 12 | 14 | 15 | 15 | 15 | 14 | 13 |
| Dew point, °C | 15 | 8 | 0 | -6 | -10 | -7 | -1 | 3 | 8 | 15 | 19 | 20 | 64 |
| Growing degree-day, °C | 300 | 155 | 0 | 0 | 0 | 0 | 0 | 33 | 181 | 267 | 388 | 413 | 1737 |
| Solar radiation, global, Mj/m2 | 16 | 13 | 9 | 8 | 9 | 12 | 17 | 20 | 22 | 20 | 18 | 17 | 15 |