Best year time to visit Olli

General weather information about Olli

Average annual temperature is 4.7 °C

Absolute maximum temperature: 28.5 °C

Absolute minimum temperature: -18.1 °C

Number of sunny days: 132 days

Number of rainy days: 165 days

Number of snow days: 68 days

Look at detailed online map of Olli

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

Olli air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)3.25.54.716.122.428.024.428.522.411.85.13.8
Average daytime temperature (°C)-1.4-1.0-0.97.714.620.519.619.916.84.3-1.1-4.5
Average temperature (°C)-3.1-3.4-4.41.89.815.916.216.613.51.9-3.0-6.3
Average night temperature (°C)-4.8-6.3-8.4-3.64.410.312.513.210.4-0.3-4.9-8.4
Absolute minimum temperature (°C)-16.9-14.8-15.1-13.1-3.61.510.89.03.8-7.6-15.3-18.1

Olli 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)5.98.711.815.018.120.119.116.113.09.96.84.9
Daylight minimum duration (h)4.07.010.013.016.019.017.014.011.08.05.04.0
Sunshine mean duration (h)1.03.05.19.912.014.710.99.56.14.50.40.5
Precipitation (mm)622445595625137132130784937
Sunny days121410221514364121010
Rainy days9278141628252615114
Snow days1012140200004917

Olli - weather forecast by months

Olli weather in januaryOlli weather in februaryOlli weather in marchOlli weather in aprilOlli weather in mayOlli weather in juneOlli weather in julyOlli weather in augustOlli weather in septemberOlli weather in octoberOlli weather in novemberOlli weather in december

Best time to visit Olli:

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

  • April — 9.9(h)
  • May — 12.0(h)
  • June — 14.7(h)
  • July — 10.9(h)
  • August — 9.5(h)

Months with the longest average daylight duration in Olli:

  • May — 18.1(h)
  • June — 20.1(h)
  • July — 19.1(h)
  • August — 16.1(h)

The largest precipitation sum in Olli is at

  • July — 137(mm)
  • August — 132(mm)
  • September — 130(mm)

    • Weather forecast in the closest to Olli admin centers

    Weather forecast in the closest towns to Olli

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    Frequently asked questions

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