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Hwaseong-si, South Korea climate
Cwa Monsoon-influenced humid subtropical
Hwaseong-si has a strongly seasonal cool-temperate climate (Monsoon-influenced humid subtropical, Köppen Cwa). The hottest month is August with an average daily high near 87°F, while the coldest is January averaging around 18°F at night. Precipitation totals about 31 inches a year and is strongly seasonal — July alone averages 9.0 inches while January barely receives 0.37 inches.
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)Hwaseong-si climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 37 | 42 | 52 | 65 | 74 | 81 | 85 | 87 | 79 | 69 | 54 | 40 |
| Avg temp (°F) | 28 | 32 | 42 | 54 | 64 | 73 | 78 | 79 | 70 | 58 | 45 | 31 |
| Avg low (°F) | 18 | 23 | 32 | 43 | 54 | 64 | 72 | 72 | 61 | 47 | 35 | 23 |
| Precipitation (in) | 0.4 | 0.5 | 0.7 | 1.4 | 2.1 | 2.6 | 9.0 | 8.3 | 3.4 | 1.5 | 1.2 | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 37 | 42 | 52 | 65 | 74 | 81 |
| Avg temp (°F) | 28 | 32 | 42 | 54 | 64 | 73 |
| Avg low (°F) | 18 | 23 | 32 | 43 | 54 | 64 |
| Precipitation (in) | 0.4 | 0.5 | 0.7 | 1.4 | 2.1 | 2.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 85 | 87 | 79 | 69 | 54 | 40 |
| Avg temp (°F) | 78 | 79 | 70 | 58 | 45 | 31 |
| Avg low (°F) | 72 | 72 | 61 | 47 | 35 | 23 |
| Precipitation (in) | 9.0 | 8.3 | 3.4 | 1.5 | 1.2 | — |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 53 | 54 | 55 | 56 | 59 | 69 | 76 | 70 | 63 | 51 | 54 | 53 |
| Relative humidity (%) | 76 | 73 | 75 | 75 | 77 | 79 | 86 | 85 | 81 | 76 | 75 | 76 |
| Wind speed (mph) | 7.4 | 7.3 | 7.1 | 6.7 | 5.9 | 4.7 | 5.5 | 5.3 | 5.5 | 6.0 | 6.8 | 7.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 53 | 54 | 55 | 56 | 59 | 69 |
| Relative humidity (%) | 76 | 73 | 75 | 75 | 77 | 79 |
| Wind speed (mph) | 7.4 | 7.3 | 7.1 | 6.7 | 5.9 | 4.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 70 | 63 | 51 | 54 | 53 |
| Relative humidity (%) | 86 | 85 | 81 | 76 | 75 | 76 |
| Wind speed (mph) | 5.5 | 5.3 | 5.5 | 6.0 | 6.8 | 7.4 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 25 years of daily observations at A 511 / Desiderio Aaf-pyeongtaek / Camp Humphreys Rok, a weather station, about 33 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.