Climate averages 1991–2020
Naesŏ weather
in April.
A mild, wet month: the 7th warmest and the 7th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
April is a mild month in Naesŏ: daytime highs average 18.1°C and nights cool to about 8.0°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 97 mm of rain on roughly 8 days, which makes April a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 03 min on an average April day.
The nearest other city in this atlas is Changwon (15 km away). In April its highs average 17.7°C, about as warm as Naesŏ, with 107 mm of rain.
Among the 79 cities listed in South Korea, Naesŏ ranks joint 14th of 79 for the warmest April highs and 64th of 79 for the driest April (rainfall, lowest first). The mean April high of those 79 cities is 16.9°C; Naesŏ is 1.2°C warmer than that mean.
From April to May, average highs rise by 4.7°C to 22.8°C, and monthly rainfall rises from 97 mm to 105 mm.
The annual picture
April 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, selected | 18.1°C8.0°C | 8.0°C | 97 | 7.7 | 13.113 h |
| May | 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
April in nearby cities
- Changwon in AprilSouth Korea · 15 kmHigh 17.7°C · Low 8.2°C · 107 mm rain
- Changnyeong in AprilSouth Korea · 33 kmHigh 19.1°C · Low 7.0°C · 84 mm rain
- Kimhae in AprilSouth Korea · 33 kmHigh 17.2°C · Low 8.5°C · 111 mm rain
- Chinju in AprilSouth Korea · 40 kmHigh 18.5°C · Low 7.1°C · 111 mm rain
- Sinhyeon in AprilSouth Korea · 42 kmHigh 15.4°C · Low 10.8°C · 132 mm rain
- Tongyeong in AprilSouth Korea · 45 kmHigh 16.2°C · Low 9.9°C · 133 mm rain
- Yangsan in AprilSouth Korea · 48 kmHigh 17.9°C · Low 8.2°C · 111 mm rain
- Busan in AprilSouth Korea · 49 kmHigh 16.0°C · Low 9.4°C · 121 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.