Best year time to visit Alterschwil

General weather information about Alterschwil

Average annual temperature is 9.9 °C

Absolute maximum temperature: 33.5 °C

Absolute minimum temperature: -12.1 °C

Number of sunny days: 128 days

Number of rainy days: 218 days

Number of snow days: 19 days

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* Weather data for Alterschwil Switzerland is based on climate observations for 2026 year

Alterschwil air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)14.913.417.917.922.729.233.531.926.123.513.810.6
Average daytime temperature (°C)3.65.99.310.216.023.723.222.921.316.57.55.9
Average temperature (°C)0.82.25.56.312.018.518.618.416.712.14.42.9
Average night temperature (°C)-2.7-1.01.72.88.013.014.214.112.58.31.1-0.1
Absolute minimum temperature (°C)-12.1-8.0-5.2-3.93.79.59.08.06.31.0-6.3-12.0

Alterschwil monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.010.012.014.015.015.015.014.013.011.010.08.0
Daylight mean duration (h)9.010.311.913.615.115.915.514.212.610.99.38.5
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.08.08.0
Sunshine mean duration (h)3.46.67.07.29.013.611.39.910.17.43.43.5
Precipitation (mm)65491002051664512719773141230168
Sunny days9131055157132016510
Rainy days111220252615241810152418
Snow days1131000000013

Alterschwil - weather forecast by months

Alterschwil weather in januaryAlterschwil weather in februaryAlterschwil weather in marchAlterschwil weather in aprilAlterschwil weather in mayAlterschwil weather in juneAlterschwil weather in julyAlterschwil weather in augustAlterschwil weather in septemberAlterschwil weather in octoberAlterschwil weather in novemberAlterschwil weather in december

Best time to visit Alterschwil:

The best time to visit Alterschwil during the most sunny months:

  • June — 13.6(h)
  • July — 11.3(h)
  • August — 9.9(h)
  • September — 10.1(h)

Months with the longest average daylight duration in Alterschwil:

  • June — 15.9(h)
  • July — 15.5(h)

The largest precipitation sum in Alterschwil is at

  • April — 205(mm)
  • May — 166(mm)
  • August — 197(mm)
  • November — 230(mm)
  • December — 168(mm)

    • Weather forecast in the closest to Alterschwil admin centers

    Weather forecast in the closest towns to Alterschwil

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    Frequently asked questions

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