Climate averages 1991–2020
Wŏnsan weather
in May.
A mild, wet month: the 5th warmest and the 8th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a mild month in Wŏnsan: daytime highs average 20.3°C and nights cool to about 11.2°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 104 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 18 min on an average May day.
The nearest other city in this atlas is Hŭngnam (78 km away). In May its highs average 18.1°C, 2.2°C cooler than Wŏnsan, with 83 mm of rain.
Among the 38 cities listed in North Korea, Wŏnsan ranks 22nd of 38 for the warmest May highs and 33rd of 38 for the driest May (rainfall, lowest first). The mean May high of those 38 cities is 20.2°C; Wŏnsan is 0.1°C warmer than that mean.
From May to June, average highs rise by 3.6°C to 23.9°C, and monthly rainfall rises from 104 mm to 116 mm.
The annual picture
May in context
Monthly precipitation
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
Wŏnsan climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 0.5°C-7.7°C | -7.7°C | 36 | 5.2 | 9.810 h |
| February | 3.1°C-5.5°C | -5.5°C | 34 | 4.7 | 10.711 h |
| March | 8.3°C-0.5°C | -0.5°C | 42 | 6.4 | 11.912 h |
| April | 14.9°C5.2°C | 5.2°C | 65 | 7.2 | 13.213 h |
| May, selected | 20.3°C11.2°C | 11.2°C | 104 | 8.3 | 14.314 h |
| June | 23.9°C16.3°C | 16.3°C | 116 | 10.0 | 14.915 h |
| July | 26.3°C20.6°C | 20.6°C | 253 | 14.6 | 14.615 h |
| August | 26.6°C21.2°C | 21.2°C | 255 | 15.5 | 13.714 h |
| September | 22.7°C16.3°C | 16.3°C | 151 | 9.9 | 12.512 h |
| October | 17.4°C9.8°C | 9.8°C | 77 | 7.9 | 11.211 h |
| November | 9.7°C2.8°C | 2.8°C | 84 | 8.1 | 10.110 h |
| December | 2.8°C-4.4°C | -4.4°C | 42 | 5.2 | 9.59 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet 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
- Hŭngnam in MayNorth Korea · 78 kmHigh 18.1°C · Low 10.6°C · 83 mm rain
- Hamhŭng in MayNorth Korea · 85 kmHigh 19.2°C · Low 9.8°C · 88 mm rain
- Hongwŏn in MayNorth Korea · 106 kmHigh 18.4°C · Low 10.1°C · 74 mm rain
- Sinp’o in MayNorth Korea · 118 kmHigh 16.7°C · Low 10.6°C · 76 mm rain
- Tŏkch’ŏn in MayNorth Korea · 122 kmHigh 21.1°C · Low 10.6°C · 122 mm rain
- Sunch’ŏn in MayNorth Korea · 134 kmHigh 21.5°C · Low 10.3°C · 108 mm rain
- P’yŏngsŏng in MayNorth Korea · 136 kmHigh 21.9°C · Low 10.4°C · 101 mm rain
- Chuncheon in MaySouth Korea · 144 kmHigh 22.0°C · Low 11.2°C · 100 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 Wŏnsan) is explained once on the Wŏnsan year overview and on the Sources, method and limits page.