Weather · Interlaken, Switzerland
Interlaken Weather in September
September in Interlaken averages 22°C by day and 14°C at night, with about 133mm of rain. That makes it one of the best months to visit.
Avg high
22°C
72°F
Avg low
14°C
57°F
Rainfall
133mm
#9 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 Interlaken builds it around the season for you.