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Iksan, South Korea climate
Cfa Humid subtropical
Iksan has a strongly seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 30°C, while the coldest is January averaging around −4°C at night. Precipitation totals about 1311 mm a year and is strongly seasonal — July alone averages 287 mm while January barely receives 29 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Iksan climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 4 | 6 | 11 | 17 | 22 | 26 | 29 | 30 | 26 | 20 | 13 | 6 |
| Avg temp (°C) | 0 | 1 | 6 | 12 | 17 | 22 | 25 | 26 | 22 | 15 | 9 | 2 |
| Avg low (°C) | −4 | −3 | 1 | 6 | 12 | 18 | 22 | 23 | 17 | 10 | 4 | −2 |
| Precipitation (mm) | 29 | 35 | 48 | 84 | 88 | 146 | 287 | 279 | 158 | 53 | 64 | 40 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 4 | 6 | 11 | 17 | 22 | 26 |
| Avg temp (°C) | 0 | 1 | 6 | 12 | 17 | 22 |
| Avg low (°C) | −4 | −3 | 1 | 6 | 12 | 18 |
| Precipitation (mm) | 29 | 35 | 48 | 84 | 88 | 146 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 30 | 26 | 20 | 13 | 6 |
| Avg temp (°C) | 25 | 26 | 22 | 15 | 9 | 2 |
| Avg low (°C) | 22 | 23 | 17 | 10 | 4 | −2 |
| Precipitation (mm) | 287 | 279 | 158 | 53 | 64 | 40 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 63 | 57 | 55 | 55 | 59 | 68 | 73 | 64 | 58 | 49 | 57 | 63 |
| Relative humidity (%) | 77 | 74 | 74 | 73 | 75 | 78 | 85 | 84 | 81 | 78 | 78 | 78 |
| Wind speed (km/h) | 9.5 | 9.6 | 10.0 | 9.7 | 9.0 | 7.5 | 8.8 | 8.1 | 7.6 | 7.8 | 8.6 | 9.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 63 | 57 | 55 | 55 | 59 | 68 |
| Relative humidity (%) | 77 | 74 | 74 | 73 | 75 | 78 |
| Wind speed (km/h) | 9.5 | 9.6 | 10.0 | 9.7 | 9.0 | 7.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 73 | 64 | 58 | 49 | 57 | 63 |
| Relative humidity (%) | 85 | 84 | 81 | 78 | 78 | 78 |
| Wind speed (km/h) | 8.8 | 8.1 | 7.6 | 7.8 | 8.6 | 9.4 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Gunsan, a weather station, about 18 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.