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September Weather in Kuhmalahti, Finland

Last updated: August 23, 2025

In Kuhmalahti, Finland, the average temperature in September hovers around 11°C (52°F). During this time, temperatures can dip to a chilly 0°C (32°F) or rise to a pleasant 22°C (73°F). Expect a total precipitation of 67 mm (2.7 in) spread over about 13 days, contributing to an average humidity of 90%. Stay prepared and enjoy the unique climate!

September Temperature in Kuhmalahti

In September in Kuhmalahti, the average temperature is 11°C (52°F). Maximums can reach 22°C (73°F) and minimums can be as low as 0°C (32°F). This variation in temperature makes it essential for travelers to pack layers to stay comfortable throughout the day.

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

The chart illustrates September temperature patterns in Kuhmalahti, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kuhmalahti, September typically has an average temperature of 11°C (52°F), with highs reaching up to 22°C (73°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec252329374960636051433628
Data source: Temperature data for Kuhmalahti 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 Kuhmalahti

In Kuhmalahti in September, the precipitation amount is 67 mm (2.7 in) over the course of 13 days.

September Precipitation Trends in Kuhmalahti

The chart displays monthly precipitation patterns in Kuhmalahti, 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 Kuhmalahti, September typically receives around 67 mm (2.7 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec474042436070778767815866
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kuhmalahti

In Kuhmalahti in September, humidity is 90%. With an average temperature of 11°C (52°F), this humidity feels like a heavy blanket that clings to your skin, making travel uncomfortable and muggy.

September Average Humidity in Kuhmalahti

This chart illustrates the average monthly humidity levels in Kuhmalahti, 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 Kuhmalahti is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec97%95%93%87%75%75%80%83%90%93%94%95%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Kuhmalahti

In Kuhmalahti 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 Kuhmalahti, you can check the information here.

Maximum UV Index Levels in Kuhmalahti for September

The chart shows the monthly maximum UV Index (UVI) for Kuhmalahti 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 Kuhmalahti typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113456653211
Data source: Kuhmalahti 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 Kuhmalahti Compares to Other Months

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

This table compares monthly weather conditions in Kuhmalahti, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)47 mm (1.9 inches)97%low
February Weather-5°C (23°F)40 mm (1.6 inches)95%low
March Weather-2°C (29°F)42 mm (1.7 inches)93%moderate
April Weather3°C (37°F)43 mm (1.7 inches)86%moderate
May Weather9°C (49°F)60 mm (2.4 inches)75%moderate
June Weather16°C (60°F)70 mm (2.8 inches)75%high
July Weather17°C (63°F)76 mm (3.0 inches)80%high
August Weather16°C (60°F)87 mm (3.4 inches)83%moderate
September Weather11°C (52°F)67 mm (2.7 inches)90%moderate
October Weather6°C (43°F)81 mm (3.2 inches)93%low
November Weather2°C (36°F)58 mm (2.3 inches)94%low
December Weather-2°C (28°F)66 mm (2.6 inches)95%low

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