September · Poland
Best time to visit Poznań in September Weather, crowds & prices
Weather in Poznań in September
Average temperature 16°C, 44 mm of rain, about 27 days with 6+ hours of sunshine and 71% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
9.4/10
Ranked #3 of 12 months
- Avg temp
- 16°C
- Rainfall
- 44 mm
- Humidity
- 71%
- Days with 6h+ sun
- 27
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Poznań scores 9.4/10 for sightseeing and cultural travel - one of the top 12-month picks (#3). Expect around 16°C, 44 mm of rain, and roughly 27 days with 6+ hours of sunshine this month.
Poznań's market square, Renaissance town hall and billy-goat clock anchor a lively student city in western Poland.
September in Poznań — one of the year's strongest windows (3rd)
September averages 16°C (62°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Expect 44 mm of rain — occasional showers rather than washed-out days — alongside about 27 days with 6+ hours of sunshine and 12.6 daylight hours.
A 9.4/10 puts this among the year's best months in Poznań (3rd of 12); only May scores higher, at 9.8/10.
Pack layers you can shed by midday plus one warm layer for the evening.
Figure on mid-season pricing, with crowds are moderate.
Frequently asked
- What is the weather like in Poznań in September?
- In September, Poznań averages 16°C, 44 mm of rain, and about 27 days with 6+ hours of sunshine. Its climate-comfort score is 9.4/10.
- Is September a good time to visit Poznań?
- September earns a 9.4/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Poznań in September?
- Expect about 44 mm of rain in September. Average humidity is 71% and there are about 27 days with 6+ hours of sunshine.
Curated in Poznań
Tickets & experiences
Things to do in Poznań
Poznań, Poland. Live activities and tours from GetYourGuide, matched to this destination.