Geneva Weather in September
20.7°C high · 9.8°C low · 95 mm rain · 6.2h sun
Sep is a warm month in Geneva — not peak season, but a good time to avoid crowds.
September at a glance
| Metric | Value |
|---|---|
| Average high | 20.7°C |
| Average low | 9.8°C |
| Rainfall | 95 mm |
| Sunshine | 6.2 hours/day |
| Daylight | 12.3 hours |
What to pack in September
Pack a jacket and layers, plus a raincoat and umbrella for Geneva in September.
Geneva weather by month
JanFebMarAprMayJunJulAugSepOctNovDec
Frequently asked questions
What is the weather in Geneva in September?
Highs of 20.7°C and lows of 9.8°C, with about 95 mm of rain and 6.2 hours of sunshine per day.
Is September a good time to visit Geneva?
Sep is a warm month in Geneva — not peak season, but a good time to avoid crowds.
What to do in Geneva · Best time to visit Geneva
Climate data: Open-Meteo Historical (ERA5), 1991–2020. CC BY 4.0.