September · Denmark
Best time to visit Bornholm in September Weather, crowds & prices
Weather in Bornholm in September
Average temperature 17°C, 58 mm of rain, about 7 days with 6+ hours of sunshine and 81% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
September score
4.5/10
Ranked #6 of 12 months
- Avg temp
- 17°C
- Rainfall
- 58 mm
- Humidity
- 81%
- Days with 6h+ sun
- 7
- Crowd Density
- Moderate Crowds
- Average Expenses
- $$ · Moderate Cost ($$)
September in Bornholm scores 4.5/10 for beach and coastal travel - an above-average month (#6 of 12). Expect around 17°C, 58 mm of rain, and roughly 7 days with 6+ hours of sunshine this month.
Bornholm is a Baltic island of round churches, smoked herring and a ruined castle on a rocky northern coast.
September in Bornholm — the hardest end of the year
Temperatures hover around 17°C (63°F) — the kind of month where neither heat nor cold forces the schedule.
Budget for roughly 58 mm of rain this month — a flexible day or two helps — with about 7 days with 6+ hours of sunshine and 12.4 hours of daylight to work around it.
That is 4.5/10 on the same scale — 6th of 12 months, versus 6.3/10 for the best month here.
Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.
Budget for mid-season pricing, and crowds are moderate.
If your dates are flexible, July is materially better in Bornholm — 1.8 points higher on the same scale.
Frequently asked
- What is the weather like in Bornholm in September?
- In September, Bornholm averages 17°C, 58 mm of rain, and about 7 days with 6+ hours of sunshine. Its climate-comfort score is 4.5/10.
- Is September a good time to visit Bornholm?
- September earns a 4.5/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Bornholm in September?
- Expect about 58 mm of rain in September. Average humidity is 81% and there are about 7 days with 6+ hours of sunshine.
Curated in Bornholm
Tickets & experiences
Things to do in Bornholm
Bornholm, Denmark. Live activities and tours from GetYourGuide, matched to this destination.