Mild
Average highs are around 20°C, so days are mild rather than hot.
September verdict
Geneva, Switzerland in September
Weather score45Mixed
Mixed for holiday weather
Average highs are around 20°C, so days are mild rather than hot. Sunshine averages 6.1h per day, enough for a balanced month. Rainfall averages 90mm, so some wet days are possible.
September weather
Monthly averages
Temp
20°C
Rain
90mm
Sun
6.1h
Weather score
45
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 90mm, so some wet days are possible.
Some sun
Sunshine averages 6.1h per day, enough for a balanced month.
Map
Weather map
Compare Geneva, Switzerland with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September20°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
September90mm average rain
September is close to Geneva's usual rainfall pattern, with little seasonal change across the year.
Driest monthsAll year
Rainfall stays comparatively low through the year.
Sun
September6.1 hours average sun
September sits close to Geneva's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsJune to August
This stretch has the strongest sunshine in the monthly averages.
Weather score
September45 weather score
September sits close to Geneva's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
