Climate averages 1991–2020
Muan 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 Muan: daytime highs average 29.0°C and nights cool to about 23.0°C. By daytime temperature it is the warmest month of the year.
Expect about 206 mm of rain on roughly 15 days, which makes August a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 28 min on an average August day.
The nearest other city in this atlas is Mokpo (21 km away). In August its highs average 27.8°C, 1.2°C cooler than Muan, with 204 mm of rain.
Among the 79 cities listed in South Korea, Muan ranks joint 25th of 79 for the warmest August highs and 18th of 79 for the driest August (rainfall, lowest first). The mean August high of those 79 cities is 28.6°C; Muan is 0.4°C warmer than that mean.
From August to September, average highs fall by 3.6°C to 25.4°C, and monthly rainfall falls from 206 mm to 147 mm.
The annual picture
August in context
Monthly rainfall
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
Muan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.1°C-1.0°C | -1.0°C | 25 | 4.5 | 10.110 h |
| February | 6.9°C-0.5°C | -0.5°C | 34 | 5.1 | 10.911 h |
| March | 11.2°C2.3°C | 2.3°C | 59 | 7.0 | 11.912 h |
| April | 16.9°C7.2°C | 7.2°C | 81 | 7.5 | 13.013 h |
| May | 21.8°C12.4°C | 12.4°C | 92 | 7.9 | 14.014 h |
| June | 25.6°C17.4°C | 17.4°C | 156 | 9.4 | 14.514 h |
| July | 27.8°C22.1°C | 22.1°C | 219 | 15.2 | 14.314 h |
| August, selected | 29.0°C23.0°C | 23.0°C | 206 | 14.6 | 13.513 h |
| September | 25.4°C18.4°C | 18.4°C | 147 | 8.9 | 12.412 h |
| October | 20.1°C12.1°C | 12.1°C | 52 | 4.3 | 11.311 h |
| November | 13.8°C6.2°C | 6.2°C | 45 | 6.0 | 10.410 h |
| December | 7.4°C0.8°C | 0.8°C | 26 | 4.5 | 9.910 h |
Rainfall is the average of the 30 separate monthly totals. A rain 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
- Mokpo in AugustSouth Korea · 21 kmHigh 27.8°C · Low 23.2°C · 204 mm rain
- Masan in AugustSouth Korea · 36 kmHigh 29.4°C · Low 22.6°C · 224 mm rain
- Gwangju in AugustSouth Korea · 44 kmHigh 29.3°C · Low 22.4°C · 225 mm rain
- Koch'ang in AugustSouth Korea · 53 kmHigh 29.1°C · Low 23.2°C · 228 mm rain
- Jeongeup in AugustSouth Korea · 79 kmHigh 29.2°C · Low 22.7°C · 241 mm rain
- Suncheon in AugustSouth Korea · 92 kmHigh 29.3°C · Low 23.3°C · 288 mm rain
- Nangen in AugustSouth Korea · 95 kmHigh 29.2°C · Low 22.2°C · 223 mm rain
- Kwangyang in AugustSouth Korea · 101 kmHigh 29.0°C · Low 23.4°C · 288 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 Muan) is explained once on the Muan year overview and on the Sources, method and limits page.