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 | 35 | 27 | 23 | 16 | 16 | 18 | 22 | 31 | 33 | 37 | 37 | 36 | 37 |
| Average high, °C | 25 | 19 | 11 | 3 | 1 | 4 | 10 | 18 | 23 | 27 | 29 | 30 | 17 |
| Average temperature, °C | 19 | 12 | 4 | -1 | -5 | -1 | 4 | 11 | 16 | 21 | 24 | 24 | 11 |
| Average low, °C | 13 | 5 | 0 | -7 | -11 | -7 | -2 | 3 | 9 | 15 | 20 | 20 | 5 |
| Record low, °C | 1 | -5 | -12 | -23 | -28 | -20 | -11 | -2 | 5 | 10 | 15 | 10 | -28 |
| Rain, days | 6 | 5 | 5 | 3 | 2 | 3 | 4 | 6 | 6 | 9 | 13 | 11 | 73 |
| Snow, days | 0 | 0 | 1 | 4 | 5 | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 15 |
| Fog, days | 26 | 28 | 28 | 27 | 28 | 23 | 26 | 24 | 25 | 24 | 25 | 27 | 311 |
| Thunderstorms, days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 |
| Snowfall, cm. | 0 | 0 | 0 | 1 | 21 | 12 | 4 | 0 | 0 | 0 | 0 | 0 | 38 |
| Average precipitation, mm. | 148 | 43 | 45 | 26 | 21 | 25 | 44 | 83 | 92 | 140 | 356 | 253 | 1276 |
| Relative humidity, % | 80 | 76 | 78 | 78 | 76 | 77 | 73 | 71 | 69 | 74 | 83 | 81 | 76 |
| Relative humidity morning, % | 91 | 89 | 84 | 79 | 75 | 75 | 80 | 83 | 87 | 89 | 92 | 91 | 85 |
| Relative humidity evening, % | 58 | 53 | 57 | 62 | 61 | 59 | 50 | 47 | 49 | 57 | 68 | 66 | 57 |
| Wind speed, km/h | 6 | 8 | 9 | 8 | 12 | 14 | 14 | 12 | 14 | 8 | 6 | 6 | 10 |
| Day Length, часов | 13 | 12 | 11 | 10 | 10 | 11 | 12 | 14 | 15 | 15 | 15 | 14 | 13 |
| Dew point, °C | 16 | 8 | 1 | -4 | 0 | 0 | 0 | 5 | 11 | 17 | 21 | 21 | 96 |
| Growing degree-day, °C | 267 | 60 | 0 | 0 | 0 | 0 | 0 | 8 | 181 | 325 | 448 | 465 | 1754 |
| Solar radiation, global, Mj/m2 | 15 | 13 | 10 | 9 | 10 | 13 | 16 | 20 | 20 | 18 | 14 | 15 | 14 |