Weather in Kanton St. Gallen in September

General weather information about Kanton St. Gallen

Average annual temperature is 5.1 °C

Absolute maximum temperature: 27.0 °C

Absolute minimum temperature: -17.4 °C

Number of sunny days: 88 days

Number of rainy days: 243 days

Number of snow days: 34 days

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* Weather data for Kanton St. Gallen Switzerland is based on climate observations for 2026 year

Kanton St. Gallen air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)9.69.812.213.616.827.026.426.421.419.99.88.8
Average daytime temperature (°C)-1.41.74.24.610.817.817.517.217.012.62.21.4
Average temperature (°C)-4.3-2.40.31.17.113.313.313.413.08.3-0.9-1.8
Average night temperature (°C)-7.8-6.8-3.5-2.22.98.39.29.68.74.0-4.1-5.1
Absolute minimum temperature (°C)-15.7-17.4-10.1-9.0-2.05.33.92.61.4-2.5-12.2-14.7

Kanton St. Gallen monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.011.012.014.015.015.015.014.013.011.010.08.0
Daylight mean duration (h)9.010.311.913.615.115.915.514.212.610.99.48.6
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.08.08.0
Sunshine mean duration (h)3.46.36.46.57.913.410.79.49.77.32.83.5
Precipitation (mm)946317523522810825930687165322238
Sunny days9139225541215210
Rainy days11817252925262718162516
Snow days1175300000035

Kanton St. Gallen - weather forecast by months

Kanton St. Gallen weather in januaryKanton St. Gallen weather in februaryKanton St. Gallen weather in marchKanton St. Gallen weather in aprilKanton St. Gallen weather in mayKanton St. Gallen weather in juneKanton St. Gallen weather in julyKanton St. Gallen weather in augustKanton St. Gallen weather in septemberKanton St. Gallen weather in octoberKanton St. Gallen weather in novemberKanton St. Gallen weather in december

Best time to visit Kanton St. Gallen:

The best time to visit Kanton St. Gallen during the most sunny months:

  • June — 13.4(h)
  • July — 10.7(h)
  • August — 9.4(h)
  • September — 9.7(h)

Months with the longest average daylight duration in Kanton St. Gallen:

  • June — 15.9(h)
  • July — 15.5(h)

The largest precipitation sum in Kanton St. Gallen is at

  • July — 259(mm)
  • August — 306(mm)
  • November — 322(mm)

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    Frequently asked questions

    When is the best time to visit Kanton St. Gallen?
    The historical weather data above shows the warmest, sunniest and driest months to help you choose the best time to visit Kanton St. Gallen.
    What is the weather like in Kanton St. Gallen?
    See average temperature, rainfall and daylight hours for Kanton St. Gallen by month in the table above.
    How many sunny days does Kanton St. Gallen have?
    The monthly weather statistics above show sunshine and rainfall patterns for Kanton St. Gallen throughout the year.