September · Poland
Best time to visit Bydgoszcz in September Weather, crowds & prices
Weather in Bydgoszcz in September
Average temperature 16°C, 41 mm of rain, about 9 days with 6+ hours of sunshine and 71% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
8.6/10
Ranked #4 of 12 months
- Avg temp
- 16°C
- Rainfall
- 41 mm
- Humidity
- 71%
- Days with 6h+ sun
- 9
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Bydgoszcz scores 8.6/10 for sightseeing and cultural travel - an above-average month (#4 of 12). Expect around 16°C, 41 mm of rain, and roughly 9 days with 6+ hours of sunshine this month.
Bydgoszcz's canal-side granaries and Mill Island give it a water-centred old town.
September is one of the strongest months in Bydgoszcz (4th)
Temperatures hover around 16°C (61°F) — the kind of month where neither heat nor cold forces the schedule.
With around 41 mm of rain, any showers tend to pass through rather than settle in; about 9 days with 6+ hours of sunshine and 12.4 hours of daylight fill the rest.
On our climate-comfort scale this is one of the strongest months of the year for Bydgoszcz at 8.6/10 (4th of 12), just behind May at 9.4/10.
Pack layers you can shed by midday plus one warm layer for the evening.
Expect mid-season pricing, and crowds are moderate.
Frequently asked
- What is the weather like in Bydgoszcz in September?
- In September, Bydgoszcz averages 16°C, 41 mm of rain, and about 9 days with 6+ hours of sunshine. Its climate-comfort score is 8.6/10.
- Is September a good time to visit Bydgoszcz?
- September earns a 8.6/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Bydgoszcz in September?
- Expect about 41 mm of rain in September. Average humidity is 71% and there are about 9 days with 6+ hours of sunshine.
Curated in Bydgoszcz
Tickets & experiences
Things to do in Bydgoszcz
Bydgoszcz, Poland. Live activities and tours from GetYourGuide, matched to this destination.