Climate averages 1991–2020
Hongseong weather
in May.
A warm, moderately wet month: the 5th warmest and the 8th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Hongseong: daytime highs average 22.6°C and nights cool to about 12.2°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 81 mm of rain on roughly 7 days, which makes May a moderately wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 06 min on an average May day.
The nearest other city in this atlas is Seosan (28 km away). In May its highs average 20.3°C, 2.3°C cooler than Hongseong, with 79 mm of rain.
Among the 79 cities listed in South Korea, Hongseong ranks joint 26th of 79 for the warmest May highs and 4th of 79 for the driest May (rainfall, lowest first). The mean May high of those 79 cities is 21.9°C; Hongseong is 0.6°C warmer than that mean.
From May to June, average highs rise by 4.3°C to 26.9°C, and monthly rainfall rises from 81 mm to 122 mm.
The annual picture
May 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
Hongseong climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.9°C-3.9°C | -3.9°C | 22 | 4.6 | 10.010 h |
| February | 5.3°C-2.8°C | -2.8°C | 30 | 4.3 | 10.811 h |
| March | 10.6°C0.8°C | 0.8°C | 45 | 6.1 | 11.912 h |
| April | 17.1°C6.4°C | 6.4°C | 77 | 7.2 | 13.113 h |
| May, selected | 22.6°C12.2°C | 12.2°C | 81 | 7.0 | 14.114 h |
| June | 26.9°C17.6°C | 17.6°C | 122 | 8.7 | 14.615 h |
| July | 28.4°C22.0°C | 22.0°C | 263 | 15.9 | 14.414 h |
| August | 29.1°C22.6°C | 22.6°C | 244 | 15.5 | 13.614 h |
| September | 25.1°C17.4°C | 17.4°C | 145 | 8.7 | 12.412 h |
| October | 19.3°C10.6°C | 10.6°C | 58 | 5.2 | 11.311 h |
| November | 12.1°C4.0°C | 4.0°C | 46 | 6.3 | 10.310 h |
| December | 5.1°C-1.9°C | -1.9°C | 24 | 5.2 | 9.710 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
May in nearby cities
- Seosan in MaySouth Korea · 28 kmHigh 20.3°C · Low 12.2°C · 79 mm rain
- Boryeong in MaySouth Korea · 29 kmHigh 20.4°C · Low 12.8°C · 88 mm rain
- Asan in MaySouth Korea · 36 kmHigh 23.0°C · Low 12.0°C · 80 mm rain
- Gongju in MaySouth Korea · 44 kmHigh 23.7°C · Low 12.7°C · 84 mm rain
- Cheonan in MaySouth Korea · 49 kmHigh 23.5°C · Low 12.3°C · 89 mm rain
- Sejong in MaySouth Korea · 56 kmHigh 23.6°C · Low 12.3°C · 86 mm rain
- Pyeongtaek in MaySouth Korea · 58 kmHigh 22.9°C · Low 12.0°C · 84 mm rain
- Hwaseong-si in MaySouth Korea · 69 kmHigh 19.1°C · Low 12.0°C · 104 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 Hongseong) is explained once on the Hongseong year overview and on the Sources, method and limits page.