Basel Weather in September
Switzerland · 30-year monthly averages
🌟 Great time to visit
September in Basel is pleasantly warm, with average daytime highs around 21°C (69°F) and nighttime lows near 11°C (52°F). Expect roughly 70mm of precipitation spread over about 9 rainy days, with a moderate amount of rain.
Avg high
21°C
69°F
Avg low
11°C
52°F
Rainfall
70mm
moderate
Rainy days
9
days with ≥1mm
☀️ About 160 hours of sunshine over the month (~5h/day).
🎒 What to pack
- light layers
- comfortable walking shoes
September vs the rest of the year
FAQ
- How hot is Basel in September?
- September in Basel is pleasantly warm, with average daytime highs around 21°C (69°F) and nighttime lows near 11°C (52°F). Expect roughly 70mm of precipitation spread over about 9 rainy days, with a moderate amount of rain.
- Does it rain a lot in Basel in September?
- Basel sees around 70mm of precipitation in September on average — moderate by global standards.
- Is September a good time to visit Basel?
- September is one of the best months to visit Basel — comfortable temperatures and manageable rainfall.