Common information
CountrySouth Korea
Population2 628 000
Weather, climate, temperature by months in Incheon
| Season | Autumn | Winter | Spring | Summer | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Sep | Oct | Nov | Dec | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Year |
| Record high, °C | 32 | 27 | 22 | 13 | 21 | 15 | 21 | 26 | 31 | 32 | 35 | 36 | 36 |
| Average high, °C | 24 | 18 | 10 | 3 | 0 | 2 | 7 | 14 | 19 | 23 | 26 | 27 | 14 |
| Average temperature, °C | 21 | 15 | 7 | 0 | -2 | 0 | 5 | 11 | 16 | 20 | 24 | 25 | 12 |
| Average low, °C | 17 | 11 | 3 | -2 | -5 | -3 | 1 | 7 | 12 | 17 | 21 | 22 | 8 |
| Record low, °C | 8 | 0 | -10 | -17 | 0 | -15 | -11 | -2 | 6 | 10 | 12 | 13 | -17 |
| Rain, days | 11 | 11 | 12 | 8 | 5 | 6 | 10 | 12 | 13 | 14 | 20 | 18 | 140 |
| Snow, days | 0 | 0 | 2 | 8 | 9 | 7 | 3 | 0 | 0 | 0 | 0 | 0 | 29 |
| Fog, days | 21 | 21 | 20 | 21 | 21 | 19 | 20 | 20 | 21 | 23 | 24 | 21 | 252 |
| Thunderstorms, days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 4 |
| Average precipitation, mm. | 120 | 40 | 40 | 20 | 20 | 20 | 30 | 70 | 70 | 110 | 260 | 210 | 1010 |
| Relative humidity morning, % | 86 | 81 | 75 | 72 | 70 | 71 | 76 | 79 | 82 | 88 | 90 | 88 | 80 |
| Relative humidity evening, % | 60 | 54 | 55 | 56 | 54 | 53 | 53 | 55 | 58 | 65 | 74 | 69 | 59 |
| Wind speed, km/h | 8 | 12 | 16 | 17 | 17 | 17 | 16 | 16 | 12 | 9 | 12 | 12 | 14 |
| Day Length, часов | 13 | 12 | 11 | 10 | 10 | 11 | 12 | 14 | 15 | 15 | 15 | 14 | 13 |
| Dew point, °C | 15 | 8 | 1 | -5 | -8 | -7 | -1 | 4 | 10 | 15 | 20 | 20 | 72 |
| Growing degree-day, °C | 325 | 146 | 0 | 0 | 0 | 0 | 0 | 25 | 189 | 317 | 439 | 465 | 1907 |
| Solar radiation, global, Mj/m2 | 15 | 13 | 10 | 9 | 10 | 13 | 16 | 20 | 20 | 18 | 14 | 15 | 14 |