ClimaGo › Interlaken › Weather in September
Switzerland
September delivers crisp autumn air with temperatures cooling to 17°C and golden light illuminating the valleys, making it excellent for hiking with fewer tourists and occasional rainfall.
Avg High
22°C
Avg Low
14°C
Daily Rain
4.4mm
Rainfall
Moderate
✅ September is one of the best months to visit Interlaken!
Access the spectacular Jungfrau mountain region, enjoy alpine activities, charming villages, and stunning valley views in Switzerland's adventure capital.