Best year time to visit Jämsä

General weather information about Jämsä

Average annual temperature is 4.1 °C

Absolute maximum temperature: 28.6 °C

Absolute minimum temperature: -18.8 °C

Number of sunny days: 133 days

Number of rainy days: 159 days

Number of snow days: 73 days

Look at detailed online map of Jämsä

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

Jämsä air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)4.04.83.515.922.727.924.328.622.211.95.03.4
Average daytime temperature (°C)-1.7-1.3-1.47.314.519.819.320.416.03.4-1.9-5.0
Average temperature (°C)-3.5-4.0-5.51.69.615.115.616.413.00.7-4.1-6.7
Average night temperature (°C)-5.5-7.1-10.3-4.24.09.311.712.29.6-1.7-6.7-8.6
Absolute minimum temperature (°C)-16.7-16.7-18.8-14.5-3.31.09.07.52.4-9.5-17.3-16.1

Jämsä 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)5.78.611.815.118.320.619.416.313.09.86.64.5
Daylight minimum duration (h)4.07.010.013.016.019.017.014.011.08.05.04.0
Sunshine mean duration (h)1.22.65.89.812.414.111.310.15.94.30.50.2
Precipitation (mm)55244560575312691109896544
Sunny days1014112014123791698
Rainy days1332715182824211594
Snow days8111832000001219

Jämsä - weather forecast by months

Jämsä weather in januaryJämsä weather in februaryJämsä weather in marchJämsä weather in aprilJämsä weather in mayJämsä weather in juneJämsä weather in julyJämsä weather in augustJämsä weather in septemberJämsä weather in octoberJämsä weather in novemberJämsä weather in december

Best time to visit Jämsä:

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

  • April — 9.8(h)
  • May — 12.4(h)
  • June — 14.1(h)
  • July — 11.3(h)
  • August — 10.1(h)

Months with the longest average daylight duration in Jämsä:

  • May — 18.3(h)
  • June — 20.6(h)
  • July — 19.4(h)
  • August — 16.3(h)

The largest precipitation sum in Jämsä is at

  • July — 126(mm)
  • August — 91(mm)
  • September — 109(mm)
  • October — 89(mm)

    • Weather forecast in the closest to Jämsä admin centers

    Weather forecast in the closest towns to Jämsä

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    Frequently asked questions

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