Climate averages 1991–2020
Sinwŏn-ŭp weather
in September.
A warm, wet month: the 4th warmest and the 9th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Sinwŏn-ŭp: daytime highs average 24.2°C and nights cool to about 16.1°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 92 mm of rain on roughly 7 days, which makes September a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 28 min on an average September day.
The nearest other city in this atlas is Haeju (22 km away). In September its highs average 23.9°C, about as warm as Sinwŏn-ŭp, with 97 mm of rain.
Among the 38 cities listed in North Korea, Sinwŏn-ŭp ranks joint 13th of 38 for the warmest September highs and 14th of 38 for the driest September (rainfall, lowest first). The mean September high of those 38 cities is 23.2°C; Sinwŏn-ŭp is 1.0°C warmer than that mean.
From September to October, average highs fall by 6.2°C to 17.9°C, and monthly rainfall falls from 92 mm to 40 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
Sinwŏn-ŭp climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 0.8°C-7.2°C | -7.2°C | 14 | 3.2 | 9.810 h |
| February | 3.7°C-5.2°C | -5.2°C | 19 | 3.5 | 10.711 h |
| March | 9.1°C-1.0°C | -1.0°C | 27 | 4.6 | 11.912 h |
| April | 15.7°C5.2°C | 5.2°C | 50 | 6.4 | 13.213 h |
| May | 21.4°C11.3°C | 11.3°C | 85 | 7.4 | 14.214 h |
| June | 25.7°C16.9°C | 16.9°C | 98 | 9.1 | 14.815 h |
| July | 27.5°C21.2°C | 21.2°C | 250 | 14.5 | 14.515 h |
| August | 28.1°C21.6°C | 21.6°C | 225 | 13.9 | 13.614 h |
| September, selected | 24.2°C16.1°C | 16.1°C | 92 | 6.7 | 12.512 h |
| October | 17.9°C8.9°C | 8.9°C | 40 | 5.0 | 11.211 h |
| November | 9.9°C1.7°C | 1.7°C | 40 | 6.3 | 10.110 h |
| December | 2.9°C-4.7°C | -4.7°C | 19 | 4.2 | 9.610 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
- Haeju in SeptemberNorth Korea · 22 kmHigh 23.9°C · Low 17.3°C · 97 mm rain
- Sinch’ŏn-ŭp in SeptemberNorth Korea · 28 kmHigh 24.5°C · Low 15.6°C · 90 mm rain
- Sariwŏn-si in SeptemberNorth Korea · 30 kmHigh 24.5°C · Low 15.9°C · 89 mm rain
- Ch’ŏngdan-ŭp in SeptemberNorth Korea · 33 kmHigh 24.1°C · Low 17.1°C · 102 mm rain
- Samch’ŏn in SeptemberNorth Korea · 41 kmHigh 24.3°C · Low 15.9°C · 87 mm rain
- Pongch’ŏn-ŭp in SeptemberNorth Korea · 41 kmHigh 24.4°C · Low 15.9°C · 111 mm rain
- Kangnyŏng in SeptemberNorth Korea · 43 kmHigh 23.4°C · Low 18.5°C · 93 mm rain
- Ŭnch’ŏn-ŭp in SeptemberNorth Korea · 47 kmHigh 24.4°C · Low 16.2°C · 89 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 Sinwŏn-ŭp) is explained once on the Sinwŏn-ŭp year overview and on the Sources, method and limits page.