Weather in Sandö in May

General weather information about Sandö

Average annual temperature is 7.1 °C

Absolute maximum temperature: 25.6 °C

Absolute minimum temperature: -10.1 °C

Number of sunny days: 137 days

Number of rainy days: 184 days

Number of snow days: 44 days

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

Sandö air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)4.34.54.38.815.421.019.925.618.615.09.45.7
Average daytime temperature (°C)1.80.90.85.39.116.217.818.516.99.03.7-0.1
Average temperature (°C)0.7-0.2-0.73.47.814.716.917.316.07.52.4-1.4
Average night temperature (°C)-0.4-1.5-2.31.56.613.316.016.415.06.10.9-2.6
Absolute minimum temperature (°C)-7.8-7.8-9.1-4.80.27.413.314.411.9-0.4-8.9-10.1

Sandö 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)5.07.010.013.015.018.016.014.011.08.06.05.0
Sunshine mean duration (h)1.63.56.210.813.715.814.19.38.15.11.10.5
Precipitation (mm)8039782120591167431369149
Sunny days81382124238614273
Rainy days20712977232516281911
Snow days38110000001417

Sandö - weather forecast by months

Sandö weather in januarySandö weather in februarySandö weather in marchSandö weather in aprilSandö weather in maySandö weather in juneSandö weather in julySandö weather in augustSandö weather in septemberSandö weather in octoberSandö weather in novemberSandö weather in december

Best time to visit Sandö:

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

  • April — 10.8(h)
  • May — 13.7(h)
  • June — 15.8(h)
  • July — 14.1(h)

Months with the longest average daylight duration in Sandö:

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

The largest precipitation sum in Sandö is at

  • July — 91(mm)
  • August — 167(mm)
  • October — 136(mm)
  • November — 91(mm)

    • Weather forecast in the closest to Sandö admin centers

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    Frequently asked questions

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