Climate averages 1991–2020
Suwon weather
in August.
A hot, very wet month: the warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a hot month in Suwon: daytime highs average 28.4°C and nights cool to about 22.1°C. By daytime temperature it is the warmest month of the year.
Expect about 231 mm of rain on roughly 14 days, which makes August a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 36 min on an average August day.
The nearest other city in this atlas is Anyang-si (13 km away). In August its highs average 28.0°C, about as warm as Suwon, with 258 mm of rain.
Among the 79 cities listed in South Korea, Suwon ranks joint 48th of 79 for the warmest August highs and joint 44th of 79 for the driest August (rainfall, lowest first). The mean August high of those 79 cities is 28.6°C; Suwon is 0.2°C cooler than that mean.
From August to September, average highs fall by 3.9°C to 24.5°C, and monthly rainfall falls from 231 mm to 124 mm.
The annual picture
August in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Suwon climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.9°C-5.9°C | -5.9°C | 20 | 3.8 | 9.910 h |
| February | 4.5°C-4.2°C | -4.2°C | 27 | 4.1 | 10.811 h |
| March | 9.8°C-0.2°C | -0.2°C | 39 | 6.1 | 11.912 h |
| April | 16.2°C5.4°C | 5.4°C | 69 | 7.1 | 13.113 h |
| May | 21.6°C11.3°C | 11.3°C | 88 | 7.1 | 14.114 h |
| June | 25.9°C16.9°C | 16.9°C | 118 | 7.6 | 14.715 h |
| July | 27.7°C21.3°C | 21.3°C | 279 | 15.3 | 14.514 h |
| August, selected | 28.4°C22.1°C | 22.1°C | 231 | 14.0 | 13.614 h |
| September | 24.5°C16.7°C | 16.7°C | 124 | 7.8 | 12.512 h |
| October | 18.6°C9.5°C | 9.5°C | 55 | 5.2 | 11.311 h |
| November | 11.0°C2.4°C | 2.4°C | 47 | 7.3 | 10.210 h |
| December | 3.9°C-3.9°C | -3.9°C | 23 | 5.1 | 9.610 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Anyang-si in AugustSouth Korea · 13 kmHigh 28.0°C · Low 22.3°C · 258 mm rain
- Osan in AugustSouth Korea · 16 kmHigh 28.8°C · Low 22.3°C · 231 mm rain
- Ansan-si in AugustSouth Korea · 17 kmHigh 28.0°C · Low 22.6°C · 239 mm rain
- Hwaseong-si in AugustSouth Korea · 19 kmHigh 27.3°C · Low 22.8°C · 239 mm rain
- Seongnam-si in AugustSouth Korea · 20 kmHigh 28.4°C · Low 21.9°C · 277 mm rain
- Gwangmyeong in AugustSouth Korea · 24 kmHigh 28.4°C · Low 22.3°C · 244 mm rain
- Gwangju, South Korea in AugustSouth Korea · 26 kmHigh 29.0°C · Low 22.1°C · 277 mm rain
- Bucheon-si in AugustSouth Korea · 31 kmHigh 28.0°C · Low 22.5°C · 244 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Suwon) is explained once on the Suwon year overview and on the Sources, method and limits page.
Osan lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.