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September Weather in Uukuniemi, Finland

Last updated: August 23, 2025

In September, the average temperature in Uukuniemi, Finland hovers around 11°C (51°F), with a minimum dipping to 0°C (33°F) and a maximum reaching 23°C (73°F). Expect a fair amount of rainfall, with 77 mm (3.0 in) of precipitation spread over 13 days. Add to that an average humidity of 90%, and you'll find it's a month filled with cool, damp conditions perfect for cozy indoor activities!

September Temperature in Uukuniemi

In September in Uukuniemi, the average temperature is 11°C (51°F), with maximums reaching 23°C (73°F) and minimums dipping as low as 0°C (33°F). It's advisable to pack layers to accommodate the varying temperatures during your travels.

September Weather in Uukuniemi: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Uukuniemi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Uukuniemi, September typically has an average temperature of 11°C (51°F), with highs reaching up to 23°C (73°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec222127374860636051423426
Data source: Temperature data for Uukuniemi generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Uukuniemi

In Uukuniemi in September, the precipitation amount is 77 mm (3.0 in) spread over a total of 13 days.

September Precipitation Trends in Uukuniemi

The chart displays monthly precipitation patterns in Uukuniemi, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Uukuniemi, September typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec4951495055598310377755377
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Uukuniemi

In Uukuniemi in September, humidity is 90%. With an average temperature of 11°C (51°F), this humidity feels like a damp blanket wrapping around you, making traveling uncomfortable and sticky, as every step leaves you feeling sluggish and clinging to the air.

September Average Humidity in Uukuniemi

This chart illustrates the average monthly humidity levels in Uukuniemi, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Uukuniemi is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec98%96%93%88%77%76%82%84%90%93%93%95%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Uukuniemi

In Uukuniemi in September, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Uukuniemi, you can check the information here.

Maximum UV Index Levels in Uukuniemi for September

The chart shows the monthly maximum UV Index (UVI) for Uukuniemi in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Uukuniemi typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113456753211
Data source: Uukuniemi September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How September Weather in Uukuniemi Compares to Other Months

Weather in Uukuniemi varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Uukuniemi, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Uukuniemi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)49 mm (1.9 inches)98%low
February Weather-6°C (21°F)51 mm (2.0 inches)96%low
March Weather-3°C (28°F)49 mm (1.9 inches)93%moderate
April Weather3°C (37°F)50 mm (2.0 inches)88%moderate
May Weather9°C (48°F)55 mm (2.2 inches)77%moderate
June Weather16°C (60°F)59 mm (2.3 inches)75%high
July Weather17°C (63°F)83 mm (3.3 inches)82%high
August Weather16°C (60°F)103 mm (4.0 inches)84%moderate
September Weather11°C (51°F)77 mm (3.0 inches)90%moderate
October Weather6°C (42°F)75 mm (3.0 inches)93%low
November Weather1°C (34°F)53 mm (2.1 inches)93%low
December Weather-4°C (26°F)77 mm (3.0 inches)95%low

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