Koeln Weather in September
19.4°C high · 11°C low · 67 mm rain · 4.8h sun
Sep is a warm month in Koeln — not peak season, but a good time to avoid crowds.
September at a glance
| Metric | Value |
|---|---|
| Average high | 19.4°C |
| Average low | 11°C |
| Rainfall | 67 mm |
| Sunshine | 4.8 hours/day |
| Daylight | 12.4 hours |
What to pack in September
Pack a jacket and layers for Koeln in September.
Koeln weather by month
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Frequently asked questions
What is the weather in Koeln in September?
Highs of 19.4°C and lows of 11°C, with about 67 mm of rain and 4.8 hours of sunshine per day.
Is September a good time to visit Koeln?
Sep is a warm month in Koeln — not peak season, but a good time to avoid crowds.
What to do in Koeln · Best time to visit Koeln
Climate data: Open-Meteo Historical (ERA5), 1991–2020. CC BY 4.0.