Best year time to visit Isoniitty

General weather information about Isoniitty

Average annual temperature is 6.2 °C

Absolute maximum temperature: 29.8 °C

Absolute minimum temperature: -18.6 °C

Number of sunny days: 129 days

Number of rainy days: 181 days

Number of snow days: 55 days

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

Isoniitty air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)3.36.58.018.524.129.824.628.921.114.89.04.4
Average daytime temperature (°C)-0.20.01.410.816.322.321.121.118.47.01.6-2.9
Average temperature (°C)-2.3-2.8-2.35.111.117.116.817.215.04.4-0.3-4.7
Average night temperature (°C)-4.6-7.4-7.1-0.44.910.612.413.311.41.9-2.7-7.3
Absolute minimum temperature (°C)-15.0-17.6-18.6-9.7-2.53.59.010.35.5-3.2-11.7-17.9

Isoniitty 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)6.79.111.814.617.318.918.115.612.910.17.55.9
Daylight minimum duration (h)5.07.010.013.016.018.017.014.011.08.06.05.0
Sunshine mean duration (h)0.92.35.211.013.015.413.29.07.94.30.90.5
Precipitation (mm)11546851640238712073987565
Sunny days81092115174971478
Rainy days147129161327222316148
Snow days911100000001915

Isoniitty - weather forecast by months

Isoniitty weather in januaryIsoniitty weather in februaryIsoniitty weather in marchIsoniitty weather in aprilIsoniitty weather in mayIsoniitty weather in juneIsoniitty weather in julyIsoniitty weather in augustIsoniitty weather in septemberIsoniitty weather in octoberIsoniitty weather in novemberIsoniitty weather in december

Best time to visit Isoniitty:

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

  • April — 11.0(h)
  • May — 13.0(h)
  • June — 15.4(h)
  • July — 13.2(h)
  • August — 9.0(h)

Months with the longest average daylight duration in Isoniitty:

  • May — 17.3(h)
  • June — 18.9(h)
  • July — 18.1(h)
  • August — 15.6(h)

The largest precipitation sum in Isoniitty is at

  • January — 115(mm)
  • August — 120(mm)
  • October — 98(mm)

    • Weather forecast in the closest to Isoniitty admin centers

    Weather forecast in the closest towns to Isoniitty

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    Frequently asked questions

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