Climate averages 1991–2020
Słupsk weather
in August.
A mild, moderately wet month: the warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
August is a mild month in Słupsk: daytime highs average 21.1°C and nights cool to about 15.1°C. By daytime temperature it is the warmest month of the year.
Expect about 85 mm of rain on roughly 14 days, which makes August a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 55 min on an average August day.
The nearest other city in this atlas is Koszalin (63 km away). In August its highs average 21.6°C, about as warm as Słupsk, with 78 mm of rain.
Among the 60 cities listed in Poland, Słupsk ranks 60th of 60 for the warmest August highs and 56th of 60 for the driest August (rainfall, lowest first). The mean August high of those 60 cities is 23.3°C; Słupsk is 2.1°C cooler than that mean.
From August to September, average highs fall by 4.0°C to 17.1°C, and monthly rainfall falls from 85 mm to 78 mm.
The annual picture
August 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
Słupsk climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 2.1°C-1.4°C | -1.4°C | 59 | 12.1 | 7.98 h |
| February | 2.7°C-1.4°C | -1.4°C | 47 | 11.0 | 9.710 h |
| March | 5.7°C0.2°C | 0.2°C | 51 | 10.5 | 11.812 h |
| April | 11.0°C3.6°C | 3.6°C | 36 | 8.8 | 14.014 h |
| May | 15.4°C8.1°C | 8.1°C | 56 | 10.5 | 16.016 h |
| June | 18.6°C12.1°C | 12.1°C | 68 | 11.5 | 17.117 h |
| July | 21.0°C14.8°C | 14.8°C | 91 | 13.4 | 16.717 h |
| August, selected | 21.1°C15.1°C | 15.1°C | 85 | 13.7 | 14.915 h |
| September | 17.1°C11.8°C | 11.8°C | 78 | 12.3 | 12.813 h |
| October | 12.0°C7.6°C | 7.6°C | 80 | 13.6 | 10.611 h |
| November | 6.9°C3.5°C | 3.5°C | 65 | 13.2 | 8.69 h |
| December | 3.4°C0.2°C | 0.2°C | 66 | 13.5 | 7.47 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
August in nearby cities
- Koszalin in AugustPoland · 63 kmHigh 21.6°C · Low 14.8°C · 78 mm rain
- Gdynia in AugustPoland · 97 kmHigh 21.9°C · Low 14.9°C · 81 mm rain
- Gdańsk in AugustPoland · 106 kmHigh 22.3°C · Low 14.8°C · 69 mm rain
- Piła in AugustPoland · 147 kmHigh 22.9°C · Low 14.5°C · 69 mm rain
- Grudziądz in AugustPoland · 157 kmHigh 23.0°C · Low 14.6°C · 64 mm rain
- Elbląg in AugustPoland · 158 kmHigh 22.2°C · Low 15.2°C · 75 mm rain
- Bydgoszcz in AugustPoland · 162 kmHigh 23.3°C · Low 14.7°C · 61 mm rain
- Fordon in AugustPoland · 164 kmHigh 23.2°C · Low 14.8°C · 63 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 Słupsk) is explained once on the Słupsk year overview and on the Sources, method and limits page.