Best year time to visit Isojärvi

General weather information about Isojärvi

Average annual temperature is 5.6 °C

Absolute maximum temperature: 29.9 °C

Absolute minimum temperature: -19.4 °C

Number of sunny days: 128 days

Number of rainy days: 169 days

Number of snow days: 68 days

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

Isojärvi air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)3.55.85.317.723.229.524.229.922.514.07.14.2
Average daytime temperature (°C)-0.5-0.60.510.015.521.220.120.117.95.80.2-3.6
Average temperature (°C)-2.1-2.9-3.24.210.316.316.316.614.43.4-1.3-5.4
Average night temperature (°C)-4.0-6.2-7.6-1.54.410.512.313.211.11.2-3.2-7.8
Absolute minimum temperature (°C)-14.4-16.5-19.4-14.3-2.92.910.79.45.9-5.7-13.5-18.3

Isojärvi monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)7.010.013.016.018.019.019.017.014.011.08.06.0
Daylight mean duration (h)6.59.011.814.717.519.218.415.812.910.07.35.6
Daylight minimum duration (h)5.07.010.013.016.018.017.014.011.08.06.05.0
Sunshine mean duration (h)0.83.04.911.312.114.411.58.87.14.30.70.2
Precipitation (mm)71299026432914620569988732
Sunny days914621181566610710
Rainy days10179121525252418149
Snow days1213180100003912

Isojärvi - weather forecast by months

Isojärvi weather in januaryIsojärvi weather in februaryIsojärvi weather in marchIsojärvi weather in aprilIsojärvi weather in mayIsojärvi weather in juneIsojärvi weather in julyIsojärvi weather in augustIsojärvi weather in septemberIsojärvi weather in octoberIsojärvi weather in novemberIsojärvi weather in december

Best time to visit Isojärvi:

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

  • April — 11.3(h)
  • May — 12.1(h)
  • June — 14.4(h)
  • July — 11.5(h)
  • August — 8.8(h)

Months with the longest average daylight duration in Isojärvi:

  • May — 17.5(h)
  • June — 19.2(h)
  • July — 18.4(h)
  • August — 15.8(h)

The largest precipitation sum in Isojärvi is at

  • July — 146(mm)
  • August — 205(mm)
  • October — 98(mm)

    • Weather forecast in the closest to Isojärvi admin centers

    Weather forecast in the closest towns to Isojärvi

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    Frequently asked questions

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