Weather in Niemi in September

General weather information about Niemi

Average annual temperature is 2.4 °C

Absolute maximum temperature: 26.9 °C

Absolute minimum temperature: -20.8 °C

Number of sunny days: 131 days

Number of rainy days: 136 days

Number of snow days: 98 days

Look at detailed online map of Niemi

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

Niemi air temperature forecast for each month

JanFebMarAprMayJunJulAugSepOctNovDec
Absolute maximum temperature (°C)4.02.50.310.622.525.325.026.920.69.71.70.2
Average daytime temperature (°C)-3.0-4.2-4.55.312.517.918.619.214.20.6-4.5-6.5
Average temperature (°C)-5.2-6.5-7.90.47.713.915.115.611.3-1.4-6.5-8.1
Average night temperature (°C)-7.2-9.0-11.7-4.21.98.711.011.78.1-3.7-9.0-10.2
Absolute minimum temperature (°C)-17.9-19.0-20.8-13.3-5.71.36.56.42.2-12.9-19.7-17.2

Niemi monthly weather indicators

JanFebMarAprMayJunJulAugSepOctNovDec
Daylight maximum duration (h)6.09.013.017.021.024.024.018.014.011.07.03.0
Daylight mean duration (h)4.58.111.715.519.523.721.416.913.19.55.72.8
Daylight minimum duration (h)2.06.09.013.017.022.018.015.011.07.03.02.0
Sunshine mean duration (h)0.41.45.710.811.714.19.89.14.91.90.20.0
Precipitation (mm)512936334841101127139772528
Sunny days8710191414686131511
Rainy days450715162523241232
Snow days19162142000061218

Niemi - weather forecast by months

Niemi weather in januaryNiemi weather in februaryNiemi weather in marchNiemi weather in aprilNiemi weather in mayNiemi weather in juneNiemi weather in julyNiemi weather in augustNiemi weather in septemberNiemi weather in octoberNiemi weather in novemberNiemi weather in december

Best time to visit Niemi:

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

  • April — 10.8(h)
  • May — 11.7(h)
  • June — 14.1(h)
  • July — 9.8(h)
  • August — 9.1(h)

Months with the longest average daylight duration in Niemi:

  • May — 19.5(h)
  • June — 23.7(h)
  • July — 21.4(h)
  • August — 16.9(h)

The largest precipitation sum in Niemi is at

  • July — 101(mm)
  • August — 127(mm)
  • September — 139(mm)

    • Weather forecast in the closest to Niemi admin centers

    Weather forecast in the closest towns to Niemi

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    Frequently asked questions

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