Weather in Harrström in September

General weather information about Harrström

Average annual temperature is 5.0 °C

Absolute maximum temperature: 30.2 °C

Absolute minimum temperature: -18.2 °C

Number of sunny days: 153 days

Number of rainy days: 162 days

Number of snow days: 50 days

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

Harrström air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)3.85.74.514.420.028.023.130.222.313.05.74.9
Average daytime temperature (°C)-0.20.1-0.77.712.519.319.719.516.65.5-0.7-3.6
Average temperature (°C)-1.9-2.1-3.92.48.815.416.216.413.92.8-2.7-6.0
Average night temperature (°C)-3.8-4.6-7.8-2.44.510.512.413.011.10.3-5.3-8.8
Absolute minimum temperature (°C)-15.6-11.7-15.7-11.9-1.53.210.210.03.2-7.2-18.2-17.1

Harrström 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)6.18.811.814.918.019.918.916.113.09.96.95.0
Daylight minimum duration (h)5.07.010.013.016.019.017.014.011.08.05.04.0
Sunshine mean duration (h)1.33.46.010.313.515.412.69.16.85.10.90.5
Precipitation (mm)563159383017951841116510533
Sunny days91314221919841015911
Rainy days13778121123272014155
Snow days98100000002615

Harrström - weather forecast by months

Harrström weather in januaryHarrström weather in februaryHarrström weather in marchHarrström weather in aprilHarrström weather in mayHarrström weather in juneHarrström weather in julyHarrström weather in augustHarrström weather in septemberHarrström weather in octoberHarrström weather in novemberHarrström weather in december

Best time to visit Harrström:

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

  • April — 10.3(h)
  • May — 13.5(h)
  • June — 15.4(h)
  • July — 12.6(h)
  • August — 9.1(h)

Months with the longest average daylight duration in Harrström:

  • May — 18.0(h)
  • June — 19.9(h)
  • July — 18.9(h)
  • August — 16.1(h)

The largest precipitation sum in Harrström is at

  • July — 95(mm)
  • August — 184(mm)
  • September — 111(mm)
  • November — 105(mm)

    • Weather forecast in the closest to Harrström admin centers

    Weather forecast in the closest towns to Harrström

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    Frequently asked questions

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