Weather in Geneva in September
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Book now, pay at pickup — compare Hertz, Avis, Budget, Sixt and 800+ rental companies for September in Geneva.
Compare car hire prices → Affiliate link — we earn a commission at no extra cost to youGeneva in September is pleasantly mild — daytime temperatures average 22.4°C, dropping to 13.8°C at night. The month is fairly wet (9 rainy days on average), with roughly 10.3 hours of sunshine a day. Weather-wise, this is one of the most reliable months to travel. For the complete picture, see the best time to visit Geneva — every month compared. Once you know when to go, find your Geneva packing list at 247PackingList.
Get ready for Geneva in September
Search flights to Geneva
Compare 100+ airlines for September — one search, best price.
Search Flights →Thermal travel layers
Pack proper layers — winters are genuinely cold and evenings drop fast year-round.
Check Price →What to pack for Geneva in September
- Light layers
- Sunscreen
- T-shirts and light trousers or shorts
- Light waterproof layer
Compare all months in Geneva
| Month | High | Rain | Rating |
|---|---|---|---|
| January | 5.6°C | 89.3mm | 10/10 |
| February | 9.2°C | 68.3mm | 10/10 |
| March | 11.5°C | 82.3mm | 10/10 |
| April | 15.0°C | 73.7mm | 10/10 |
| May | 19.0°C | 102.0mm | 9/10 |
| June | 24.4°C | 90.5mm | 10/10 |
| July | 26.8°C | 99.2mm | 10/10 |
| August | 26.5°C | 65.7mm | 10/10 |
| September | 22.4°C | 85.3mm | 10/10 |
| October | 16.6°C | 132.7mm | 9/10 |
| November | 9.8°C | 117.6mm | 9/10 |
| December | 6.5°C | 165.0mm | 9/10 |
Full month-by-month guide: best time to visit Geneva →
For facts about Switzerland — currency, language and dialling code — see our Switzerland country guide at 247CountryInfo. Travellers also find it useful to keep a Geneva travel guide to hand. Check clothing sizes in Switzerland before you shop.
Frequently Asked Questions
Is September a good time to visit Geneva?
September rates 10/10 for visiting Geneva — excellent time to visit. Expect average highs of 22.4°C, 85.3mm of rain across the month and about 10.3 hours of daily sunshine.
What is the temperature in Geneva in September?
In September, Geneva has average highs of 22.4°C (72.3°F) and average lows of 13.8°C (56.8°F).
Does it rain in Geneva in September?
Some rain is likely. Geneva averages 85.3mm across about 9 rainy days in September, so a light waterproof layer is worth packing.
What should I wear in Geneva in September?
For Geneva in September (22.4°C highs / 13.8°C lows), pack light layers plus sunscreen, t-shirts and light trousers or shorts, light waterproof layer.
More essentials for Geneva in September
Packing cubes
Keep the bag organised whatever the weather — compression cubes for every size.
Check Price →Travel first aid kit
Compact TSA-friendly kit for peace of mind wherever you travel.
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.