Climate averages 1991–2020
Masan weather
in April.
A mild, moderately 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 Masan: daytime highs average 18.0°C and nights cool to about 6.5°C. By daytime temperature it is the 7th warmest of the 12 months.
Expect about 85 mm of rain on roughly 8 days, which makes April a moderately 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 Gwangju (8 km away). In April its highs average 18.0°C, about as warm as Masan, with 88 mm of rain.
Among the 79 cities listed in South Korea, Masan ranks joint 17th of 79 for the warmest April highs and joint 55th of 79 for the driest April (rainfall, lowest first). The mean April high of those 79 cities is 16.9°C; Masan is 1.1°C warmer than that mean.
From April to May, average highs rise by 5.0°C to 23.0°C, and monthly rainfall rises from 85 mm to 97 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
Masan climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.9°C-2.6°C | -2.6°C | 27 | 5.3 | 10.110 h |
| February | 7.1°C-1.8°C | -1.8°C | 34 | 5.4 | 10.911 h |
| March | 12.0°C1.3°C | 1.3°C | 60 | 7.3 | 11.912 h |
| April, selected | 18.0°C6.5°C | 6.5°C | 85 | 7.6 | 13.013 h |
| May | 23.0°C12.0°C | 12.0°C | 97 | 8.0 | 14.014 h |
| June | 26.7°C17.3°C | 17.3°C | 162 | 10.1 | 14.514 h |
| July | 28.6°C22.0°C | 22.0°C | 243 | 16.2 | 14.314 h |
| August | 29.4°C22.6°C | 22.6°C | 224 | 15.7 | 13.513 h |
| September | 25.8°C17.5°C | 17.5°C | 145 | 9.8 | 12.412 h |
| October | 20.4°C10.4°C | 10.4°C | 55 | 4.5 | 11.311 h |
| November | 13.8°C4.3°C | 4.3°C | 46 | 6.3 | 10.410 h |
| December | 7.1°C-1.0°C | -1.0°C | 29 | 5.4 | 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
- Gwangju in AprilSouth Korea · 8 kmHigh 18.0°C · Low 6.3°C · 88 mm rain
- Muan in AprilSouth Korea · 36 kmHigh 16.9°C · Low 7.2°C · 81 mm rain
- Koch'ang in AprilSouth Korea · 36 kmHigh 17.0°C · Low 7.1°C · 80 mm rain
- Jeongeup in AprilSouth Korea · 53 kmHigh 17.4°C · Low 6.6°C · 86 mm rain
- Mokpo in AprilSouth Korea · 53 kmHigh 15.1°C · Low 7.7°C · 92 mm rain
- Nangen in AprilSouth Korea · 59 kmHigh 18.2°C · Low 6.6°C · 92 mm rain
- Suncheon in AprilSouth Korea · 63 kmHigh 18.4°C · Low 8.0°C · 120 mm rain
- Kwangyang in AprilSouth Korea · 71 kmHigh 18.0°C · Low 8.3°C · 120 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 Masan) is explained once on the Masan year overview and on the Sources, method and limits page.