Interlaken weather in September

Check the Weather in Interlaken, Switzerland in September before you book your next holiday. This gives the best indication of the weather in September and includes figures for temperature, sunshine and rainfall.

  • 15°C maximum daytime temperature in September in Interlaken15
    15°C max day temperature
  • 5 hours of sunshine per day (43% of daylight hours) in September in Interlaken5
    5 hours of sunshine per day
  • 14 days with some rainfall in September in Interlaken14
    14 days with some rainfall
  • 7°C minimum night-time temperature in September in Interlaken7
    7°C min night temperature
  • 13 hours of daylight per day in September in Interlaken13
    13 hours of daylight per day
  • No heat & humidity in September in Interlaken0
    No heat & humidity
  • 108 mm monthly rainfall in September in Interlaken108
    108 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Interlaken5
    5 (Moderate) UV index

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Metric (°C / mm)  |  Imperial (°F / inches)

More about Interlaken

  • Browse last minute holidays to Switzerland
  • Destinations include Wengen, Interlaken & Zermatt
  • Prices start at just £430 per person

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