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Gdansk weather in September 2025
Expect 15°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Gdansk in September. Check more long-term weather averages for Gdansk in September before you book your next holiday to Poland in 2025/2026.
- 1515°C max day temperature
- 5 hours of sunshine per day
- 1515 days with some rainfall
- 88°C min night temperature
- 1313 hours of daylight per day
- 0No heat & humidity
- 5353 mm of monthly rainfall
- 33 (Moderate) UV index
- 1616°C sea temperature
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Recommended for Poland
The September weather guide for Poland (Gdansk) 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 warm is it in Gdansk in September?
Daytime temperatures usually reach 15°C in Gdansk in September, falling to 8°C at night.
How sunny is it in Gdansk in September?
There are normally 5 hours of bright sunshine each day in Gdansk in September - that's 37% of daylight hours.
How warm is the sea around Gdansk in September?
The average sea temperature around Gdansk in September is 16°C.
Does it rain in Gdansk in September?
There are usually 15 days with some rain in Gdansk in September and the average monthly rainfall is 53mm.
Gdansk September sunrise & sunset times
Browse the sunrise and sunset times for Gdansk in September 2025. Select a month to view Gdansk sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 04:53 | 18:36 |
Monday, 15th September 2025 | 05:18 | 18:01 |
Tuesday, 30th September 2025 | 05:46 | 17:24 |
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