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September Weather in Puumala, Finland

Last updated: August 23, 2025

In September, the average temperature in Puumala, Finland is a comfortable 12°C (53°F). However, temperatures can vary significantly, with a minimum of 3°C (37°F) and a maximum of 21°C (71°F). Visitors should also be prepared for 93 mm (3.7 in) of precipitation over 15 days, contributing to an average humidity level of 90%.

September Temperature in Puumala

In September in Puumala, the average temperature is 12°C (53°F). The maximum can reach 21°C (71°F) and the minimum can be as low as 3°C (37°F). Be sure to pack layers to stay comfortable during your travels.

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

The chart illustrates September temperature patterns in Puumala, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Puumala, September typically has an average temperature of 12°C (53°F), with highs reaching up to 21°C (71°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec232227354762656253433527
Data source: Temperature data for Puumala 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 Puumala

In Puumala in September, the precipitation amount is 93 mm (3.7 in) over the course of 15 days.

September Precipitation Trends in Puumala

The chart displays monthly precipitation patterns in Puumala, 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 Puumala, September typically receives around 93 mm (3.7 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec52534742526790111931178280
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Puumala

In Puumala in September, humidity is 90%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that clings to your skin, making outdoor adventures uncomfortable and travel plans less appealing.

September Average Humidity in Puumala

This chart illustrates the average monthly humidity levels in Puumala, 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 Puumala 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 Puumala

In Puumala 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 Puumala, you can check the information here.

Maximum UV Index Levels in Puumala for September

The chart shows the monthly maximum UV Index (UVI) for Puumala 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 Puumala typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113456753211
Data source: Puumala 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 Puumala Compares to Other Months

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

This table compares monthly weather conditions in Puumala, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)52 mm (2.0 inches)98%low
February Weather-6°C (22°F)53 mm (2.1 inches)96%low
March Weather-3°C (27°F)47 mm (1.9 inches)93%moderate
April Weather1°C (35°F)42 mm (1.7 inches)88%moderate
May Weather8°C (48°F)52 mm (2.1 inches)77%moderate
June Weather16°C (62°F)67 mm (2.6 inches)75%high
July Weather18°C (65°F)90 mm (3.5 inches)82%high
August Weather17°C (62°F)111 mm (4.4 inches)84%moderate
September Weather12°C (53°F)93 mm (3.7 inches)90%moderate
October Weather6°C (43°F)117 mm (4.6 inches)93%low
November Weather2°C (36°F)82 mm (3.2 inches)93%low
December Weather-3°C (27°F)80 mm (3.2 inches)95%low

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