Climate averages 1991–2020
Haeju weather
in September.
A warm, wet month: the 3rd 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 Haeju: daytime highs average 23.9°C and nights cool to about 17.3°C. By daytime temperature it is the 3rd warmest of the 12 months.
Expect about 97 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 Ch’ŏngdan-ŭp (21 km away). In September its highs average 24.1°C, about as warm as Haeju, with 102 mm of rain.
Among the 38 cities listed in North Korea, Haeju ranks joint 19th of 38 for the warmest September highs and 19th of 38 for the driest September (rainfall, lowest first). The mean September high of those 38 cities is 23.2°C; Haeju is 0.7°C warmer than that mean.
From September to October, average highs fall by 6.1°C to 17.8°C, and monthly rainfall falls from 97 mm to 43 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
Haeju climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 0.7°C-6.0°C | -6.0°C | 15 | 3.2 | 9.810 h |
| February | 3.0°C-4.4°C | -4.4°C | 20 | 3.5 | 10.811 h |
| March | 8.0°C-0.1°C | -0.1°C | 29 | 4.9 | 11.912 h |
| April | 14.0°C6.0°C | 6.0°C | 55 | 6.9 | 13.213 h |
| May | 19.3°C11.7°C | 11.7°C | 92 | 7.5 | 14.214 h |
| June | 23.7°C17.2°C | 17.2°C | 105 | 8.3 | 14.815 h |
| July | 26.1°C21.3°C | 21.3°C | 271 | 14.4 | 14.515 h |
| August | 27.4°C22.2°C | 22.2°C | 241 | 13.3 | 13.614 h |
| September, selected | 23.9°C17.3°C | 17.3°C | 97 | 6.8 | 12.512 h |
| October | 17.8°C10.3°C | 10.3°C | 43 | 4.9 | 11.211 h |
| November | 10.0°C3.1°C | 3.1°C | 43 | 6.4 | 10.210 h |
| December | 3.1°C-3.5°C | -3.5°C | 19 | 4.3 | 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
- Ch’ŏngdan-ŭp in SeptemberNorth Korea · 21 kmHigh 24.1°C · Low 17.1°C · 102 mm rain
- Sinwŏn-ŭp in SeptemberNorth Korea · 22 kmHigh 24.2°C · Low 16.1°C · 92 mm rain
- Kangnyŏng in SeptemberNorth Korea · 23 kmHigh 23.4°C · Low 18.5°C · 93 mm rain
- Sinch’ŏn-ŭp in SeptemberNorth Korea · 40 kmHigh 24.5°C · Low 15.6°C · 90 mm rain
- Pongch’ŏn-ŭp in SeptemberNorth Korea · 44 kmHigh 24.4°C · Low 15.9°C · 111 mm rain
- Samch’ŏn in SeptemberNorth Korea · 49 kmHigh 24.3°C · Low 15.9°C · 87 mm rain
- Paech’ŏn-ŭp in SeptemberNorth Korea · 52 kmHigh 24.5°C · Low 16.2°C · 111 mm rain
- Sariwŏn-si in SeptemberNorth Korea · 52 kmHigh 24.5°C · Low 15.9°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 Haeju) is explained once on the Haeju year overview and on the Sources, method and limits page.