Best year time to visit Hierannummi

General weather information about Hierannummi

Average annual temperature is 6.0 °C

Absolute maximum temperature: 28.6 °C

Absolute minimum temperature: -17.1 °C

Number of sunny days: 122 days

Number of rainy days: 183 days

Number of snow days: 60 days

Look at detailed online map of Hierannummi

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

Hierannummi air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)3.25.76.416.624.028.624.428.621.214.77.43.8
Average daytime temperature (°C)-0.2-0.30.89.615.321.720.119.917.76.81.3-2.9
Average temperature (°C)-2.2-2.7-2.54.010.316.616.416.814.74.4-0.2-4.7
Average night temperature (°C)-4.5-6.6-6.5-1.64.310.012.613.711.72.1-2.0-6.7
Absolute minimum temperature (°C)-15.1-16.1-17.1-9.4-2.13.310.311.24.9-3.2-11.9-15.1

Hierannummi monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)7.010.013.015.018.019.018.016.014.011.08.06.0
Daylight mean duration (h)6.89.111.814.617.318.818.115.612.910.17.55.9
Daylight minimum duration (h)5.07.010.013.016.018.017.014.011.08.06.05.0
Sunshine mean duration (h)1.02.55.611.312.715.212.89.27.34.31.10.5
Precipitation (mm)94387819352382151381088952
Sunny days91310232018356465
Rainy days11987111228262425157
Snow days116130000002919

Hierannummi - weather forecast by months

Hierannummi weather in januaryHierannummi weather in februaryHierannummi weather in marchHierannummi weather in aprilHierannummi weather in mayHierannummi weather in juneHierannummi weather in julyHierannummi weather in augustHierannummi weather in septemberHierannummi weather in octoberHierannummi weather in novemberHierannummi weather in december

Best time to visit Hierannummi:

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

  • April — 11.3(h)
  • May — 12.7(h)
  • June — 15.2(h)
  • July — 12.8(h)
  • August — 9.2(h)

Months with the longest average daylight duration in Hierannummi:

  • May — 17.3(h)
  • June — 18.8(h)
  • July — 18.1(h)
  • August — 15.6(h)

The largest precipitation sum in Hierannummi is at

  • January — 94(mm)
  • August — 151(mm)
  • October — 108(mm)
  • November — 89(mm)

    • Weather forecast in the closest to Hierannummi admin centers

    Weather forecast in the closest towns to Hierannummi

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    Frequently asked questions

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