Climate averages 1991–2020
Koszalin weather
in August.
A mild, moderately wet month: one of 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 Koszalin: daytime highs average 21.6°C and nights cool to about 14.8°C. By daytime temperature it is one of the warmest months of the year.
Expect about 78 mm of rain on roughly 13 days, which makes August a moderately wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 53 min on an average August day.
The nearest other city in this atlas is Słupsk (63 km away). In August its highs average 21.1°C, about as warm as Koszalin, with 85 mm of rain.
Among the 60 cities listed in Poland, Koszalin ranks 58th of 60 for the warmest August highs and 54th of 60 for the driest August (rainfall, lowest first). The mean August high of those 60 cities is 23.3°C; Koszalin is 1.7°C cooler than that mean.
From August to September, average highs fall by 4.2°C to 17.4°C, and monthly rainfall falls from 78 mm to 68 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
Koszalin 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-1.6°C | -1.6°C | 54 | 11.7 | 8.08 h |
| February | 3.0°C-1.5°C | -1.5°C | 44 | 10.3 | 9.710 h |
| March | 6.3°C0.1°C | 0.1°C | 49 | 10.3 | 11.812 h |
| April | 11.8°C3.8°C | 3.8°C | 38 | 8.9 | 14.014 h |
| May | 16.2°C8.2°C | 8.2°C | 56 | 10.8 | 16.016 h |
| June | 19.2°C12.0°C | 12.0°C | 71 | 12.0 | 17.117 h |
| July | 21.6°C14.6°C | 14.6°C | 90 | 13.3 | 16.617 h |
| August, selected | 21.6°C14.8°C | 14.8°C | 78 | 13.4 | 14.915 h |
| September | 17.4°C11.5°C | 11.5°C | 68 | 12.1 | 12.813 h |
| October | 12.2°C7.3°C | 7.3°C | 66 | 12.5 | 10.611 h |
| November | 6.9°C3.2°C | 3.2°C | 53 | 11.8 | 8.69 h |
| December | 3.3°C-0.1°C | -0.1°C | 58 | 12.4 | 7.57 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
- Słupsk in AugustPoland · 63 kmHigh 21.1°C · Low 15.1°C · 85 mm rain
- Stargard in AugustPoland · 121 kmHigh 22.9°C · Low 14.8°C · 68 mm rain
- Piła in AugustPoland · 122 kmHigh 22.9°C · Low 14.5°C · 69 mm rain
- Szczecin in AugustPoland · 136 kmHigh 22.9°C · Low 14.8°C · 68 mm rain
- Gdynia in AugustPoland · 157 kmHigh 21.9°C · Low 14.9°C · 81 mm rain
- Gdańsk in AugustPoland · 162 kmHigh 22.3°C · Low 14.8°C · 69 mm rain
- Bydgoszcz in AugustPoland · 170 kmHigh 23.3°C · Low 14.7°C · 61 mm rain
- Gorzów Wielkopolski in AugustPoland · 174 kmHigh 23.6°C · Low 15.0°C · 65 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 Koszalin) is explained once on the Koszalin year overview and on the Sources, method and limits page.