Climate averages 1991–2020
Wŏnsan weather
in September.
A warm, wet month: the 4th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Wŏnsan: daytime highs average 22.7°C and nights cool to about 16.3°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 151 mm of rain on roughly 10 days, which makes September a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 29 min on an average September day.
The nearest other city in this atlas is Hŭngnam (78 km away). In September its highs average 21.9°C, 0.8°C cooler than Wŏnsan, with 115 mm of rain.
Among the 38 cities listed in North Korea, Wŏnsan ranks 26th of 38 for the warmest September highs and 38th of 38 for the driest September (rainfall, lowest first). The mean September high of those 38 cities is 23.2°C; Wŏnsan is 0.5°C cooler than that mean.
From September to October, average highs fall by 5.3°C to 17.4°C, and monthly rainfall falls from 151 mm to 77 mm.
The annual picture
September 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 | 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, selected | 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
September in nearby cities
- Hŭngnam in SeptemberNorth Korea · 78 kmHigh 21.9°C · Low 16.1°C · 115 mm rain
- Hamhŭng in SeptemberNorth Korea · 85 kmHigh 21.9°C · Low 14.5°C · 131 mm rain
- Hongwŏn in SeptemberNorth Korea · 106 kmHigh 21.7°C · Low 15.4°C · 102 mm rain
- Sinp’o in SeptemberNorth Korea · 118 kmHigh 21.2°C · Low 16.4°C · 101 mm rain
- Tŏkch’ŏn in SeptemberNorth Korea · 122 kmHigh 23.5°C · Low 14.2°C · 124 mm rain
- Sunch’ŏn in SeptemberNorth Korea · 134 kmHigh 23.9°C · Low 14.8°C · 110 mm rain
- P’yŏngsŏng in SeptemberNorth Korea · 136 kmHigh 24.0°C · Low 15.0°C · 100 mm rain
- Chuncheon in SeptemberSouth Korea · 144 kmHigh 24.1°C · Low 16.1°C · 129 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.