Weather in Jonsa in September

General weather information about Jonsa

Average annual temperature is 4.2 °C

Absolute maximum temperature: 28.1 °C

Absolute minimum temperature: -17.9 °C

Number of sunny days: 115 days

Number of rainy days: 162 days

Number of snow days: 88 days

Look at detailed online map of Jonsa

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

Jonsa air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)2.83.13.315.822.227.124.228.121.211.72.82.5
Average daytime temperature (°C)-2.3-3.0-1.97.314.219.418.620.516.33.8-2.3-5.4
Average temperature (°C)-3.8-5.3-4.91.39.615.215.717.113.61.9-3.9-6.9
Average night temperature (°C)-5.4-7.4-7.9-2.74.510.412.713.510.90.3-5.5-8.1
Absolute minimum temperature (°C)-15.8-17.4-17.9-8.7-2.90.810.49.26.8-5.8-16.4-14.7

Jonsa monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)7.010.013.016.019.020.020.017.014.011.08.05.0
Daylight mean duration (h)5.88.711.815.018.220.319.216.213.09.86.84.8
Daylight minimum duration (h)4.07.010.013.016.019.017.014.011.08.05.04.0
Sunshine mean duration (h)0.92.35.110.312.014.29.210.75.93.00.10.2
Precipitation (mm)803271294265172112112827249
Sunny days101110221512484865
Rainy days817814182723261785
Snow days13161402000061621

Jonsa - weather forecast by months

Jonsa weather in januaryJonsa weather in februaryJonsa weather in marchJonsa weather in aprilJonsa weather in mayJonsa weather in juneJonsa weather in julyJonsa weather in augustJonsa weather in septemberJonsa weather in octoberJonsa weather in novemberJonsa weather in december

Best time to visit Jonsa:

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

  • April — 10.3(h)
  • May — 12.0(h)
  • June — 14.2(h)
  • July — 9.2(h)
  • August — 10.7(h)

Months with the longest average daylight duration in Jonsa:

  • May — 18.2(h)
  • June — 20.3(h)
  • July — 19.2(h)
  • August — 16.2(h)

The largest precipitation sum in Jonsa is at

  • July — 172(mm)
  • August — 112(mm)
  • September — 112(mm)

    • Weather forecast in the closest to Jonsa admin centers

    Weather forecast in the closest towns to Jonsa

    Explore Jonsa

    See also
    MapTrains schedule
    Plan your trip
    AccommodationExperiencesBlog

    Frequently asked questions

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