Cool
Average highs are around 15°C, so pack for cooler days.
September verdict
Switzerland in September
Weather score35Poor
Poor for holiday weather
Average highs are around 15°C, so pack for cooler days. Sunshine averages 5.7h per day, enough for a balanced month. Rainfall averages 107mm, so some wet days are possible.
September weather
Monthly averages
Temp
15°C
Rain
107mm
Sun
5.7h
Sea
0°C
Weather score
35
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 107mm, so some wet days are possible.
Some sun
Sunshine averages 5.7h per day, enough for a balanced month.
Cool sea
Sea temperatures average 0°C, so the water can feel cool.
Map
Weather map
Compare Switzerland with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September15°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
September107mm average rain
September sits near Switzerland's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to April and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September5.7 hours average sun
September sits close to Switzerland'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.
Sea temperature
September0°C average sea
September is close to Switzerland's usual sea temperature, with limited seasonal change in the water.
Warmest seaAll year
Sea temperatures stay warm enough for easy swimming through the year.
Weather score
September35 weather score
September sits close to Switzerland'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.
Hotels near Switzerland
Marriott
The Hotel Lucerne, Autograph CollectionLucerne, Switzerland
Renaissance Lucerne HotelLucerne, Switzerland
The Cambrian, Adelboden, a Member of Design Hotels™Adelboden, Switzerland
Moxy Bern ExpoBern, Switzerland
Moxy RapperswilRapperswil, Switzerland
Chandolin Boutique Hotel, a Member of Design Hotels™Chandolin, Switzerland