The month in detail
What to expect in September
Autumn in Geneva is often underrated: 21°C, golden light and declining crowds. An interesting window. Expect rain on 28% of days — a light raincoat in the bag is recommended. A good balance between weather and crowds, even if July (8.5/10) remains theoretically better.
September ranks 4 out of 12 months in Geneva. Compared to August: −6°C daytime, −1.7h of sun per day.
This month's conditions
What it's like in September
UV index
4 · moderate
protect during midday hours
Feels like
comfortable
12°
Daylight
12.3h of daylight
Air quality
good
AQI 26
Compare
Is September the right month?
The best month in Geneva is July (8.5/10), 0.8 pt higher than September.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Geneva
Expedia →
Activities
Tours, tickets, experiences
See ↓
Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Geneva
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a city break.
Country · Switzerland
🗣️LanguageGerman
💶CurrencySwiss Franc (Fr)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘVery expensive · 5/5
🌡️ Climate
🌍Climate typeTemperate
📈Climate trend ⓘStable
🔥Hottest monthAugust · 27°C
❄️Coolest monthJanuary · 5°C
🌧️Rainiest month ⓘMay · 33%
🏛️ City break
📅Tourist peak seasonJune → August
☔Indoor sights ⓘYear-round
🚇Public transportGood
🛂VisaSchengen · 90 days
Explore
Other destinations in September
If September doesn't convince you for this destination, compare with others.
Location
Where is Geneva ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
SwitzerlandTemperate climate with a 8.5 → 0.9 gap between best and worst month. 10 years of ERA5 data to choose by project.
46.20°N · 6.14°E
Questions
Frequently asked questions
What is the best time to visit Geneva?
July is the best month with 26.0°C highs, 17.0°C lows, 8.7h of sunshine and 26.0% rainy days. The months of July & August offer comparable conditions.
How many hours of sunshine does Geneva get in July?
Geneva averages 8.7 sunshine hours per day in July. It is the sunniest month with a climate score of 8.0/10.
What is the rainiest month in Geneva?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Geneva in July?
In July, overnight lows reach 17.0°C, while afternoon highs average 26.0°C.
Is Geneva good in winter?
In winter (December-February), Geneva scores 1.9/10 on average — Difficult period — prefer the peak season.. The best month overall remains July with a score of 8.0/10.
When should you avoid Geneva?
January is the most difficult month to visit Geneva, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Do you need sun protection in Geneva in September?
The average UV index reaches 4 in September in Geneva (moderate), with about 12.3h of daylight. Protect during midday hours.