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Bialystok weather in September 2025
Expect 17°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Bialystok in September. Check more long-term weather averages for Bialystok in September before you book your next holiday to Poland in 2025/2026.
- 1717°C max day temperature
- 5 hours of sunshine per day
- 1313 days with some rainfall
- 88°C min night temperature
- 1313 hours of daylight per day
- 0No heat & humidity
- 5353 mm of monthly rainfall
- 44 (Moderate) UV index
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Bialystok by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Poland
The September weather guide for Poland (Bialystok) 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 Bialystok in September?
Daytime temperatures usually reach 17°C in Bialystok in September, falling to 8°C at night.
How sunny is it in Bialystok in September?
There are normally 5 hours of bright sunshine each day in Bialystok in September - that's 40% of daylight hours.
Does it rain in Bialystok in September?
There are usually 13 days with some rain in Bialystok in September and the average monthly rainfall is 53mm.
Bialystok September sunrise & sunset times
Browse the sunrise and sunset times for Bialystok in September 2025. Select a month to view Bialystok sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 04:37 | 18:16 |
Monday, 15th September 2025 | 05:01 | 17:43 |
Tuesday, 30th September 2025 | 05:27 | 17:06 |
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