Climate averages 1991–2020
Naesŏ weather
in May.
A warm, 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 Naesŏ: daytime highs average 22.8°C and nights cool to about 13.2°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 105 mm of rain on roughly 8 days, which makes May a wet month (the 8th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 00 min on an average May day.
The nearest other city in this atlas is Changwon (15 km away). In May its highs average 22.1°C, 0.6°C cooler than Naesŏ, with 114 mm of rain.
Among the 79 cities listed in South Korea, Naesŏ ranks 22nd of 79 for the warmest May highs and 63rd of 79 for the driest May (rainfall, lowest first). The mean May high of those 79 cities is 21.9°C; Naesŏ is 0.9°C warmer than that mean.
From May to June, average highs rise by 3.0°C to 25.8°C, and monthly rainfall rises from 105 mm to 152 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
Naesŏ climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 6.0°C-2.0°C | -2.0°C | 25 | 3.5 | 10.110 h |
| February | 8.4°C-0.8°C | -0.8°C | 35 | 4.3 | 10.911 h |
| March | 12.8°C2.9°C | 2.9°C | 70 | 6.9 | 11.912 h |
| April | 18.1°C8.0°C | 8.0°C | 97 | 7.7 | 13.113 h |
| May, selected | 22.8°C13.2°C | 13.2°C | 105 | 7.8 | 14.014 h |
| June | 25.8°C17.8°C | 17.8°C | 152 | 9.4 | 14.514 h |
| July | 28.2°C22.2°C | 22.2°C | 225 | 14.2 | 14.314 h |
| August | 29.1°C23.1°C | 23.1°C | 202 | 14.3 | 13.513 h |
| September | 25.5°C18.4°C | 18.4°C | 154 | 9.4 | 12.412 h |
| October | 20.6°C11.9°C | 11.9°C | 63 | 4.5 | 11.311 h |
| November | 14.1°C5.2°C | 5.2°C | 43 | 4.7 | 10.310 h |
| December | 7.9°C-0.4°C | -0.4°C | 25 | 3.2 | 9.810 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
- Changwon in MaySouth Korea · 15 kmHigh 22.1°C · Low 13.3°C · 114 mm rain
- Changnyeong in MaySouth Korea · 33 kmHigh 24.2°C · Low 12.5°C · 92 mm rain
- Kimhae in MaySouth Korea · 33 kmHigh 21.5°C · Low 13.3°C · 118 mm rain
- Chinju in MaySouth Korea · 40 kmHigh 23.3°C · Low 12.7°C · 118 mm rain
- Sinhyeon in MaySouth Korea · 42 kmHigh 19.0°C · Low 15.0°C · 139 mm rain
- Tongyeong in MaySouth Korea · 45 kmHigh 20.3°C · Low 14.6°C · 140 mm rain
- Yangsan in MaySouth Korea · 48 kmHigh 22.4°C · Low 13.2°C · 118 mm rain
- Busan in MaySouth Korea · 49 kmHigh 19.8°C · Low 13.8°C · 130 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 Naesŏ) is explained once on the Naesŏ year overview and on the Sources, method and limits page.