Best year time to visit Altnau

General weather information about Altnau

Average annual temperature is 11.7 °C

Absolute maximum temperature: 35.0 °C

Absolute minimum temperature: -9.0 °C

Number of sunny days: 139 days

Number of rainy days: 218 days

Number of snow days: 8 days

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

Altnau air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)13.513.918.319.925.030.735.032.728.724.914.311.7
Average daytime temperature (°C)5.47.010.912.518.525.925.624.923.517.79.06.5
Average temperature (°C)2.82.86.78.614.521.020.620.418.813.16.13.9
Average night temperature (°C)0.0-0.62.75.110.715.616.016.214.68.93.11.0
Absolute minimum temperature (°C)-5.6-5.8-3.1-1.67.412.310.59.59.65.0-1.2-9.0

Altnau monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)9.010.012.014.015.015.015.014.013.011.09.08.0
Daylight mean duration (h)8.910.311.913.615.115.915.514.212.610.99.38.5
Daylight minimum duration (h)8.09.011.012.014.015.015.013.011.010.08.08.0
Sunshine mean duration (h)3.06.87.07.79.713.611.510.110.27.33.73.2
Precipitation (mm)43241031651284817814653110184134
Sunny days9159512178122116510
Rainy days18102225191323199152520
Snow days430000000001

Altnau - weather forecast by months

Altnau weather in januaryAltnau weather in februaryAltnau weather in marchAltnau weather in aprilAltnau weather in mayAltnau weather in juneAltnau weather in julyAltnau weather in augustAltnau weather in septemberAltnau weather in octoberAltnau weather in novemberAltnau weather in december

Best time to visit Altnau:

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

  • June — 13.6(h)
  • July — 11.5(h)
  • August — 10.1(h)
  • September — 10.2(h)

Months with the longest average daylight duration in Altnau:

  • June — 15.9(h)
  • July — 15.5(h)

The largest precipitation sum in Altnau is at

  • April — 165(mm)
  • July — 178(mm)
  • August — 146(mm)
  • November — 184(mm)

    • Weather forecast in the closest to Altnau admin centers

    Weather forecast in the closest towns to Altnau

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    Frequently asked questions

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