Monthly climate guide
Bielefeld weather in September
With highs near 20°C (68°F) and lows around 10°C (50°F), September feels mild in Bielefeld. Rainfall averages about 51 mm (some rain) and the sky is often cloudy. Daytime highs are 4°C cooler than August and 5°C warmer than October.
What stands out in September
- Seasonally, September counts as early autumn in Bielefeld.
- It's one of the sunniest months here, with cloud cover around 67%.
- Temperatures are falling — expect highs around 5°C lower by October.
- Bielefeld is usually about 2°C cooler than Frankfurt in September.
Avg high
20°C
68°F
Avg low
10°C
50°F
Rainfall
51 mm
some rain
Humidity
76%
relative
Sky
67%
cloud · often cloudy
Bielefeld weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 4°C / 39°F | -1°C / 30°F | 82 mm | 93% | 81% |
| February | 5°C / 41°F | -1°C / 29°F | 52 mm | 89% | 73% |
| March | 9°C / 49°F | 1°C / 33°F | 49 mm | 84% | 68% |
| April | 14°C / 58°F | 4°C / 39°F | 40 mm | 78% | 63% |
| May | 18°C / 64°F | 7°C / 45°F | 60 mm | 77% | 68% |
| June | 21°C / 70°F | 11°C / 52°F | 77 mm | 76% | 71% |
| July | 23°C / 73°F | 13°C / 55°F | 72 mm | 74% | 69% |
| August | 24°C / 74°F | 13°C / 56°F | 67 mm | 73% | 67% |
| September | 20°C / 68°F | 10°C / 50°F | 51 mm | 76% | 67% |
| October | 15°C / 58°F | 7°C / 44°F | 68 mm | 85% | 72% |
| November | 9°C / 48°F | 3°C / 37°F | 58 mm | 92% | 76% |
| December | 6°C / 42°F | 1°C / 34°F | 82 mm | 93% | 82% |
What to pack for September
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A small travel umbrella, just in case
Is September a good time to visit Bielefeld?
Compare the months in the chart above to find your ideal window.
Best time to visit Bielefeld →Other Germany cities in September
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Bielefeld weather in September. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/germany/bielefeld/september
<a href="https://weathercompare.eu/weather/germany/bielefeld/september">Bielefeld weather in September</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/germany/bielefeld" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Bielefeld weather in September"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/germany/bielefeld/september">Bielefeld weather in September</a> – WeatherCompare</p>
Bielefeld in September: quick answers
Is September a good time to visit Bielefeld?
Yes. September is one of the best months for Bielefeld, with highs around 20°C and about 51 mm of rain.
How warm is Bielefeld in September?
Average highs are about 20°C (68°F) and average lows about 10°C (50°F), based on 10 years of daily data.
Does it rain a lot in Bielefeld in September?
Bielefeld typically gets around 51 mm of rain in September — some rain.
Figures are long-term averages for the area around Bielefeld (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.