Geneva Weather in September

Switzerland · September climate averages and travel tips

Avg high22°C (71°F)
Avg low12°C (53°F)
Rainfall87 mm (3.4 in)
RatingExcellent 8.7/10

In September, Geneva has average highs of 22°C (71°F) and lows of 12°C (53°F). September is autumn (fall) in Switzerland. The month is moderately rainy, with about 87 mm (3.4 in) of rain spread over 11 days. You get roughly 12.3 hours of daylight and a mix of sun and cloud.

Is September a good time to visit Geneva?

Yes — September is one of the best months to visit Geneva. The weather rates excellent (8.7/10) on our comfort score.

Visiting Geneva in September

Mild days, cooler evenings

September feels warm enough for long days outside, but not as summery as August. The high is 22°C and the low is 12°C, with rain on 11 days. Showers can interrupt a lakeside stroll, though there's still plenty of sun between them.

You can explore the Old Town, walk the lakefront or take a boat across Lake Geneva without August's stronger heat. Swimming at Bains des Pâquis can still appeal on a sunny day, but don't count on every afternoon feeling like beach weather. For hikers, nearby trails are pleasant in mild conditions; keep a rainy-day plan for the mountains.

Harvest events and local holidays

Jeûne genevois, Geneva's cantonal public holiday, falls in September. Many local businesses close, so check opening arrangements if your plans depend on a particular shop or museum.

The Fête des Vendanges in Russin celebrates the grape harvest, usually in September. It's a good chance to see Geneva's wine-growing side beyond the lake and city centre. Dates vary, so confirm the festival schedule before travelling out.

A calmer city after summer

Geneva is generally less crowded than in August, when summer visitors are still in town. September remains a popular month, though, and it's not as quiet as the cooler months ahead. Prices can ease after the summer peak, but don't expect every hotel to be a bargain.

Couples who like city walks without midsummer heat may find September a sweet spot. For a practical lakeside route, walk from Jardin Anglais to Bains des Pâquis; you'll have cafés and shelter nearby if a shower rolls in.

September weather at a glance

Average high22°C (71°F)
Average low12°C (53°F)
Daily mean16°C (62°F)
Rainfall87 mm (3.4 in)
Rainy days (1 mm+)11
Humidity72%
Cloud cover59%
Daylight12.3 hours
Est. sunshine5.5 hours/day
Wind5.1 km/h
vs August3°C cooler than August, with similar rainfall.

What to pack for Geneva in September

Geneva weather in other months

Jan4°C / -2°C93 mmPoorFeb6°C / -1°C71 mmPoorMar10°C / 2°C86 mmFairApr15°C / 5°C77 mmGoodMay18°C / 9°C116 mmFairJun23°C / 14°C104 mmGoodJul25°C / 16°C93 mmExcellentAug25°C / 15°C91 mmExcellentSep22°C / 12°C87 mmExcellentOct17°C / 8°C87 mmGoodNov10°C / 3°C101 mmPoorDec6°C / -1°C124 mmPoor

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Better weather in September nearby

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