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Koszalin weather in September 2025
Expect 18°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Koszalin in September. Check more long-term weather averages for Koszalin in September before you book your next holiday to Poland in 2025/2026.
- 1818°C max day temperature
- 5 hours of sunshine per day
- 1515 days with some rainfall
- 1010°C min night temperature
- 1313 hours of daylight per day
- 0No heat & humidity
- 7878 mm of monthly rainfall
- 33 (Moderate) UV index
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The September weather guide for Poland (Koszalin) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about Poland
How hot is it in Koszalin in September?
Daytime temperatures usually reach 18°C in Koszalin in September, falling to 10°C at night.
How sunny is it in Koszalin in September?
There are normally 5 hours of bright sunshine each day in Koszalin in September - that's 36% of daylight hours.
Does it rain in Koszalin in September?
There are usually 15 days with some rain in Koszalin in September and the average monthly rainfall is 78mm.
Koszalin September sunrise & sunset times
Browse the sunrise and sunset times for Koszalin in September 2025. Select a month to view Koszalin sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 05:03 | 18:46 |
Monday, 15th September 2025 | 05:28 | 18:11 |
Tuesday, 30th September 2025 | 05:56 | 17:34 |
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