Weather · Basel, Switzerland
Basel Weather in September
Expect mild, some rain in Basel through September: highs near 22°C, lows around 12°C, 79mm of rain across the month. It's one of the best months to visit.
Avg high
22°C
72°F
Avg low
12°C
54°F
Rainfall
79mm
#10 wettest of 12
What to pack
Summer clothes by day; a light layer for evenings. Bring a compact umbrella for the odd shower.
Timing a trip around the weather? A Local Friend in Basel builds it around the season for you.