Weather in Oulu in May

General weather information about Oulu

Average annual temperature is 3.6 °C

Absolute maximum temperature: 28.7 °C

Absolute minimum temperature: -22.1 °C

Number of sunny days: 131 days

Number of rainy days: 142 days

Number of snow days: 92 days

Look at detailed online map of Oulu

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

Oulu air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)4.64.62.113.722.626.024.828.720.811.03.72.9
Average daytime temperature (°C)-1.8-2.4-3.35.512.618.819.020.315.62.9-2.3-5.2
Average temperature (°C)-3.7-4.9-6.70.48.214.915.916.712.80.7-4.3-7.0
Average night temperature (°C)-6.0-7.5-10.7-4.23.510.212.312.99.8-1.7-6.6-9.2
Absolute minimum temperature (°C)-20.7-15.9-22.1-13.0-5.03.19.06.5-0.1-11.7-16.5-15.0

Oulu monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)6.09.013.016.020.022.021.018.014.011.07.04.0
Daylight mean duration (h)5.28.411.815.218.821.620.116.513.19.76.33.9
Daylight minimum duration (h)3.06.010.013.017.020.018.014.011.07.04.03.0
Sunshine mean duration (h)0.82.06.510.313.115.111.110.56.33.90.80.1
Precipitation (mm)6321363844431291101191064241
Sunny days991119171489414116
Rainy days932612162322261463
Snow days13161852000031322

Oulu - weather forecast by months

Oulu weather in januaryOulu weather in februaryOulu weather in marchOulu weather in aprilOulu weather in mayOulu weather in juneOulu weather in julyOulu weather in augustOulu weather in septemberOulu weather in octoberOulu weather in novemberOulu weather in december

Best time to visit Oulu:

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

  • April — 10.3(h)
  • May — 13.1(h)
  • June — 15.1(h)
  • July — 11.1(h)
  • August — 10.5(h)

Months with the longest average daylight duration in Oulu:

  • May — 18.8(h)
  • June — 21.6(h)
  • July — 20.1(h)
  • August — 16.5(h)

The largest precipitation sum in Oulu is at

  • July — 129(mm)
  • August — 110(mm)
  • September — 119(mm)
  • October — 106(mm)

    • Weather forecast in the closest to Oulu admin centers

    Weather forecast in the closest towns to Oulu

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    Frequently asked questions

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