Best year time to visit Karlsö

General weather information about Karlsö

Average annual temperature is 6.9 °C

Absolute maximum temperature: 27.4 °C

Absolute minimum temperature: -16.6 °C

Number of sunny days: 133 days

Number of rainy days: 187 days

Number of snow days: 45 days

Look at detailed online map of Karlsö

* Weather data for Karlsö Åland is based on climate observations for 2026 year

Karlsö air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)5.75.810.314.420.627.422.126.621.615.29.45.9
Average daytime temperature (°C)2.21.51.78.013.520.819.619.217.58.23.0-0.3
Average temperature (°C)0.6-0.2-1.23.79.516.316.716.715.16.41.4-2.0
Average night temperature (°C)-1.2-2.6-5.4-0.74.810.513.414.112.34.2-0.6-4.2
Absolute minimum temperature (°C)-8.5-7.0-16.6-9.9-3.64.111.111.87.6-2.1-9.1-9.1

Karlsö 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)6.89.111.814.617.218.818.015.612.910.17.56.0
Daylight minimum duration (h)5.07.010.013.016.018.016.014.011.08.06.05.0
Sunshine mean duration (h)1.92.85.69.913.915.814.09.38.55.11.60.7
Precipitation (mm)653884283117123102509810143
Sunny days121391822199512734
Rainy days1691312811222618231811
Snow days3690100001916

Karlsö - weather forecast by months

Karlsö weather in januaryKarlsö weather in februaryKarlsö weather in marchKarlsö weather in aprilKarlsö weather in mayKarlsö weather in juneKarlsö weather in julyKarlsö weather in augustKarlsö weather in septemberKarlsö weather in octoberKarlsö weather in novemberKarlsö weather in december

Best time to visit Karlsö:

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

  • April — 9.9(h)
  • May — 13.9(h)
  • June — 15.8(h)
  • July — 14.0(h)
  • August — 9.3(h)

Months with the longest average daylight duration in Karlsö:

  • May — 17.2(h)
  • June — 18.8(h)
  • July — 18.0(h)
  • August — 15.6(h)

The largest precipitation sum in Karlsö is at

  • March — 84(mm)
  • July — 123(mm)
  • August — 102(mm)
  • October — 98(mm)
  • November — 101(mm)

    • Weather forecast in the closest to Karlsö admin centers

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    Frequently asked questions

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