Best year time to visit Sumiainen

General weather information about Sumiainen

Average annual temperature is 4.6 °C

Absolute maximum temperature: 28.6 °C

Absolute minimum temperature: -16.1 °C

Number of sunny days: 115 days

Number of rainy days: 178 days

Number of snow days: 72 days

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

Sumiainen air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)2.73.74.017.022.428.624.227.220.611.74.42.6
Average daytime temperature (°C)-1.9-2.0-1.27.314.320.019.320.016.64.1-1.5-4.9
Average temperature (°C)-3.4-4.2-4.21.79.815.616.216.913.92.2-3.0-6.3
Average night temperature (°C)-5.1-6.7-7.2-2.64.810.113.013.511.20.3-4.5-7.7
Absolute minimum temperature (°C)-13.7-16.1-15.3-8.7-2.61.211.69.06.7-6.6-15.5-12.1

Sumiainen monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)7.010.013.016.019.020.019.017.014.011.08.05.0
Daylight mean duration (h)6.18.811.814.917.919.918.916.013.09.96.95.1
Daylight minimum duration (h)5.07.010.013.016.019.017.014.011.08.05.04.0
Sunshine mean duration (h)0.62.45.010.512.114.610.510.86.63.40.10.3
Precipitation (mm)64265838504519675116696841
Sunny days710921151165610510
Rainy days114109151925262417126
Snow days13141201000041315

Sumiainen - weather forecast by months

Sumiainen weather in januarySumiainen weather in februarySumiainen weather in marchSumiainen weather in aprilSumiainen weather in maySumiainen weather in juneSumiainen weather in julySumiainen weather in augustSumiainen weather in septemberSumiainen weather in octoberSumiainen weather in novemberSumiainen weather in december

Best time to visit Sumiainen:

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

  • April — 10.5(h)
  • May — 12.1(h)
  • June — 14.6(h)
  • July — 10.5(h)
  • August — 10.8(h)

Months with the longest average daylight duration in Sumiainen:

  • May — 17.9(h)
  • June — 19.9(h)
  • July — 18.9(h)
  • August — 16.0(h)

The largest precipitation sum in Sumiainen is at

  • July — 196(mm)
  • September — 116(mm)

    • Weather forecast in the closest to Sumiainen admin centers

    Weather forecast in the closest towns to Sumiainen

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    Frequently asked questions

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