Climate guide for Geneva, Switzerland

Best Time to Visit
Geneva

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01 · Switzerland

About Geneva

From May to September, Geneva enjoys 20–26°C days with low humidity, ideal for lakeside bike rides and Old Town climbs before noon heat. Early mornings often reveal sharp Mont Blanc silhouettes; afternoon haze suits CERN labs or Musée d'Art et d'Histoire. July–August draws dense crowds, so book ferries early and picnic in Parc des Bastions.

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Did you know?

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Travel Tips

01Best time & timing
Target July, August, June — that is where comfort scores peak (9.3/10). December is the weakest month at 2.7/10.
02Weather & what to pack
July averages 21°C with 59 mm of rain and about 31 days with 6+ hours of sunshine. Pack light clothing, a hat and real sun protection.
03Crowds & value
If budget matters, target June — 8.2/10 with lighter demand than July.

Things to do in Geneva

Geneva, Switzerland. Live activities and tours from GetYourGuide, matched to this destination.

When to visit Geneva: the short answer

Plan Geneva for July, with August, June close behind — the stretch with the most usable temperatures and the fewest lost days to rain: July averages 21°C with 59 mm of rain and about 31 days with 6+ hours of sunshine. The months to avoid unless you have a specific reason are December, November.

Across the year Geneva swings from 1°C in January to 21°C in August, a 21-degree spread, while rainfall ranges from 50 mm in February to 150 mm in December. In short, Geneva is not equally good year-round — the gap between its best and worst month is 6.6 points on the same 10-point scale.

Warmest month: August (21°C). Coolest: January (1°C). Driest: February (50 mm). Wettest: December (150 mm).

Geneva month by month

January in Geneva — off-season conditions

Hardest · 3.8/10

At 1°C (33°F) this is proper winter weather in January: layer up and split the day between outdoor highlights and indoor stops.

77 mm of water-equivalent precipitation makes this a snowy month at resort level; what falls stays as snow, with almost no days with 6+ hours of sunshine and 8.8 hours of daylight.

That is 3.8/10 on the same scale — 10th of 12 months, versus 9.3/10 for the best month here.

Budget for mid-season pricing, and crowds are light for this destination.

Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.

If your dates are flexible, July is materially better in Geneva — 5.5 points higher on the same scale.

February in Geneva — middling scores, decent value

Trade-offs · 5.2/10

At 3°C (38°F) this is proper winter weather in February: layer up and split the day between outdoor highlights and indoor stops.

Budget for roughly 50 mm of rain this month — a flexible day or two helps — with about 1 days with 6+ hours of sunshine and 10 hours of daylight to work around it.

That is 5.2/10 on the same scale — 9th of 12 months, versus 9.3/10 for the best month here.

Expect mid-season pricing, and crowds are moderate.

Pack insulated layers, a windproof shell, gloves and boots with grip, a packable rain layer.

If your dates are flexible, July is materially better in Geneva — 4.1 points higher on the same scale.

March in Geneva — middling scores, decent value

Trade-offs · 5.5/10

March averages 6°C (43°F) — jacket weather. Comfortable for walking and museums, too cool for anything water-based.

Rainfall runs 91 mm, so plan one flexible day in three; you still get about 8 days with 6+ hours of sunshine and 11.6 hours of daylight.

It scores 5.5/10 here, 8th of 12 months, against 9.3/10 in the destination's best month.

Plan for mid-season pricing, with crowds are moderate.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

Flexible dates? July scores 3.8 points higher here — enough to change the trip.

April in Geneva — workable with trade-offs

Trade-offs · 6.4/10

Expect 8°C (46°F) in April. A good month for city streets, viewpoints and long meals; leave swimming for another season.

Budget for roughly 91 mm of rain this month — a flexible day or two helps — with about 14 days with 6+ hours of sunshine and 13.3 hours of daylight to work around it.

That is 6.4/10 on the same scale — 6th of 12 months, versus 9.3/10 for the best month here.

Expect mid-season pricing, and crowds are moderate.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a packable rain layer.

If your dates are flexible, July is materially better in Geneva — 2.9 points higher on the same scale.

May holds up well in Geneva — 4th best month

Good · 7.9/10

May averages 13°C (56°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.

Rainfall runs 93 mm, so plan one flexible day in three; you still get about 22 days with 6+ hours of sunshine and 14.8 hours of daylight.

It scores 7.9/10 here, 4th of 12 months, against 9.3/10 in the destination's best month.

Figure on mid-season pricing, with crowds are moderate.

Pack layers you can shed by midday plus one warm layer for the evening, a packable rain layer.

June in Geneva: strong conditions, 3rd of 12

Good · 8.2/10

Temperatures hover around 19°C (65°F) — the kind of month where neither heat nor cold forces the schedule.

102 mm of rain makes this a wet month here, though with about 27 days with 6+ hours of sunshine there is still bright weather between the fronts.

That is 8.2/10 on the same scale — 3rd of 12 months, versus 9.3/10 for the best month here.

Budget for mid-season pricing, and crowds are moderate.

Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.

July in Geneva tops the year's climate scores

Best window · 9.3/10

At 21°C (69°F) this is comfortable city weather in July, with sightseeing easiest before lunch and after the afternoon peak.

Budget for roughly 59 mm of rain this month — a flexible day or two helps — with about 31 days with 6+ hours of sunshine and 15.2 hours of daylight to work around it.

On our climate-comfort scale this is the top-ranked month of the year for Geneva at 9.3/10 — the reference point every other month on this page is measured against.

Expect peak pricing, and this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack light clothing, a hat and real sun protection, a packable rain layer.

August in Geneva — one of the year's strongest windows (2nd)

Best window · 9/10

August averages 21°C (70°F) — pleasant for mornings and evenings on foot in the city, with a midday break when the sun is strongest.

Rainfall runs 73 mm, so plan one flexible day in three; you still get about 24 days with 6+ hours of sunshine and 14 hours of daylight.

A 9/10 puts this among the year's best months in Geneva (2nd of 12); only July scores higher, at 9.3/10.

Plan for peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.

Pack light clothing, a hat and real sun protection, a packable rain layer.

September in Geneva — middling scores, decent value

Trade-offs · 6.8/10

September averages 16°C (60°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.

At 145 mm this is a genuinely wet month: about 13 days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.

It scores 6.8/10 here, 5th of 12 months, against 9.3/10 in the destination's best month.

Plan for mid-season pricing, with crowds are moderate.

Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.

Flexible dates? July scores 2.5 points higher here — enough to change the trip.

October in Geneva — middling scores, decent value

Trade-offs · 5.7/10

Temperatures hover around 13°C (56°F) — the kind of month where neither heat nor cold forces the schedule.

127 mm of rain signals a properly wet month, with only about 3 days with 6+ hours of sunshine to count on — build indoor options into the schedule.

That is 5.7/10 on the same scale — 7th of 12 months, versus 9.3/10 for the best month here.

Expect mid-season pricing, and crowds are moderate.

Pack layers you can shed by midday plus one warm layer for the evening, a proper rain shell rather than an umbrella.

If your dates are flexible, July is materially better in Geneva — 3.6 points higher on the same scale.

November in Geneva — the hardest end of the year

Hardest · 3.5/10

Expect 6°C (42°F) in November. A good month for city streets, viewpoints and long meals; leave swimming for another season.

139 mm of rain signals a properly wet month, with only almost no days with 6+ hours of sunshine to count on — build indoor options into the schedule.

That is 3.5/10 on the same scale — 11th of 12 months, versus 9.3/10 for the best month here.

Expect low-season pricing, and crowds are light for this destination.

Pack a mid-weight jacket, long sleeves and shoes you can walk 15 km in, a proper rain shell rather than an umbrella.

If your dates are flexible, July is materially better in Geneva — 5.8 points higher on the same scale.

December in Geneva — the hardest end of the year

Hardest · 2.7/10

December averages 2°C (35°F), cold enough that sightseeing works in bursts rather than in one long day on foot.

At 150 mm this is a genuinely wet month: almost no days with 6+ hours of sunshine in total, and outdoor plans need an indoor fallback.

It scores 2.7/10 here, 12th of 12 months, against 9.3/10 in the destination's best month.

Figure on low-season pricing, with crowds are light for this destination.

Pack insulated layers, a windproof shell, gloves and boots with grip, a proper rain shell rather than an umbrella.

Flexible dates? July scores 6.6 points higher here — enough to change the trip.

FAQ

Frequently asked

When is the best time to visit Geneva, Switzerland?
In Ideal Weather mode, the best months to visit Geneva are July, August. July is the single peak month with an Ideal Weather score of 9.3/10 based on temperature, rainfall, humidity, daylight and days with 6+ hours of sunshine.
What is the weather like in Geneva year-round?
Geneva has a climate profile suited to sightseeing and cultural travel. Average monthly temperatures range from 1°C in January to 21°C in August, with Ideal Weather scores between 2.7 and 9.3 out of 10.
Which months should I avoid in Geneva?
The lowest Ideal Weather-scoring months in Geneva are December (2.7/10), November (3.5/10), January (3.8/10). These months typically combine less comfortable temperatures, higher rainfall or fewer days with 6+ hours of sunshine.
When is the rainy season in Geneva?
December is the wettest month in Geneva, averaging about 150 mm of rainfall. February is the driest, at roughly 50 mm.
Which is the sunniest month in Geneva?
July sees the most sun in Geneva, with about 31 days with 6+ hours of sunshine on average - ideal for outdoor plans.
Is Geneva a good destination for sightseeing and cultural travel?
Geneva is well suited to sightseeing and cultural travel. Its highest Ideal Weather window (July, August) aligns with the conditions travelers usually look for in this style of trip.
How is the bestime.to score for Geneva calculated?
Each month receives an Ideal Weather score from 0-10 using ERA5 climate normals for Geneva: temperature comfort, precipitation, humidity, daylight hours, and days with 6+ hours of sunshine - weighted for sightseeing and cultural travel.

Climate data: Open-Meteo ERA5 historical archive, the five most recent complete years (2021–2025). Scores are monthly averages for that window, not forecasts, and short-window precipitation can differ from longer-term normals. “Sunny days” count days with at least 6 hours of measured sunshine — they are not dry days.

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