Weather in Gästersö in September

General weather information about Gästersö

Average annual temperature is 6.7 °C

Absolute maximum temperature: 29.1 °C

Absolute minimum temperature: -17.7 °C

Number of sunny days: 124 days

Number of rainy days: 194 days

Number of snow days: 47 days

Look at detailed online map of Gästersö

* Weather data for Gästersö Finland is based on climate observations for 2026 year

Gästersö air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)3.97.67.017.123.029.124.127.621.015.28.85.0
Average daytime temperature (°C)0.80.81.29.215.321.619.819.917.87.92.4-1.8
Average temperature (°C)-1.0-1.5-1.84.510.317.016.617.415.45.61.0-3.6
Average night temperature (°C)-3.2-5.0-5.8-0.43.910.712.914.612.63.1-0.8-5.6
Absolute minimum temperature (°C)-17.7-15.5-16.4-9.3-2.73.310.512.25.6-3.0-10.8-15.3

Gästersö monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)7.010.013.015.018.018.018.016.014.011.08.06.0
Daylight mean duration (h)6.89.211.814.617.218.717.915.612.910.17.66.0
Daylight minimum duration (h)6.07.010.013.015.018.016.014.011.08.06.05.0
Sunshine mean duration (h)1.23.15.711.113.115.613.59.77.94.61.60.8
Precipitation (mm)1034484203717102143451048869
Sunny days91012212220056946
Rainy days17910991031262422189
Snow days5990000000816

Gästersö - weather forecast by months

Gästersö weather in januaryGästersö weather in februaryGästersö weather in marchGästersö weather in aprilGästersö weather in mayGästersö weather in juneGästersö weather in julyGästersö weather in augustGästersö weather in septemberGästersö weather in octoberGästersö weather in novemberGästersö weather in december

Best time to visit Gästersö:

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

  • April — 11.1(h)
  • May — 13.1(h)
  • June — 15.6(h)
  • July — 13.5(h)
  • August — 9.7(h)

Months with the longest average daylight duration in Gästersö:

  • May — 17.2(h)
  • June — 18.7(h)
  • July — 17.9(h)
  • August — 15.6(h)

The largest precipitation sum in Gästersö is at

  • January — 103(mm)
  • July — 102(mm)
  • August — 143(mm)
  • October — 104(mm)

    • Weather forecast in the closest to Gästersö admin centers

    Weather forecast in the closest towns to Gästersö

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    Frequently asked questions

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