Weather in Deca in September

General weather information about Deca

Average annual temperature is 12.2 °C

Absolute maximum temperature: 33.6 °C

Absolute minimum temperature: -4.5 °C

Number of sunny days: 168 days

Number of rainy days: 191 days

Number of snow days: 6 days

Look at detailed online map of Deca

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

Deca air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)14.116.217.418.624.428.830.633.626.128.915.615.8
Average daytime temperature (°C)7.310.012.614.618.623.425.826.222.118.511.08.8
Average temperature (°C)3.84.97.59.914.719.221.521.617.814.36.14.4
Average night temperature (°C)0.00.52.24.79.914.016.016.013.09.81.50.5
Absolute minimum temperature (°C)-3.4-4.5-2.1-1.77.19.910.910.37.25.4-2.2-3.2

Deca 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)9.110.411.913.615.015.715.314.112.510.99.58.7
Daylight minimum duration (h)8.09.011.012.014.015.014.013.011.010.08.08.0
Sunshine mean duration (h)5.77.98.39.29.912.312.811.09.06.76.35.4
Precipitation (mm)4512799518113815922427035210160
Sunny days182115164791616131518
Rainy days12316142723221514181512
Snow days140000000001

Deca - weather forecast by months

Deca weather in januaryDeca weather in februaryDeca weather in marchDeca weather in aprilDeca weather in mayDeca weather in juneDeca weather in julyDeca weather in augustDeca weather in septemberDeca weather in octoberDeca weather in novemberDeca weather in december

Best time to visit Deca:

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

  • June — 12.3(h)
  • July — 12.8(h)
  • August — 11.0(h)

Months with the longest average daylight duration in Deca:

  • June — 15.7(h)
  • July — 15.3(h)

The largest precipitation sum in Deca is at

  • May — 181(mm)
  • August — 224(mm)
  • September — 270(mm)
  • October — 352(mm)

    • Weather forecast in the closest to Deca admin centers

    Weather forecast in the closest towns to Deca

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    Frequently asked questions

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