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September Weather in Ruokolahti, Finland

Last updated: August 23, 2025

In Ruokolahti, Finland, the average temperature in September hovers around 11°C (52°F). Expect a chilly minimum of 0°C (33°F), with highs reaching up to 23°C (74°F). This month also brings about 70 mm (2.8 in) of precipitation across 12 days, contributing to an average humidity level of 90%. Be prepared for a cool and damp experience!

September Temperature in Ruokolahti

In September in Ruokolahti, the average temperature is 11°C (52°F), with maximums reaching 23°C (74°F) and minimums dropping as low as 0°C (33°F). This mild climate makes Ruokolahti an ideal destination for travelers looking to explore without the extremes of hot or cold weather.

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

The chart illustrates September temperature patterns in Ruokolahti, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ruokolahti, September typically has an average temperature of 11°C (52°F), with highs reaching up to 23°C (74°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec232228374961646152433526
Data source: Temperature data for Ruokolahti 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 Ruokolahti

In Ruokolahti in September, the precipitation amount is 70 mm (2.8 in) over the course of 12 days.

September Precipitation Trends in Ruokolahti

The chart displays monthly precipitation patterns in Ruokolahti, 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 Ruokolahti, September typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec465348465253728670734873
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ruokolahti

In Ruokolahti 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 Ruokolahti

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

In Ruokolahti 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 Ruokolahti, you can check the information here.

Maximum UV Index Levels in Ruokolahti for September

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

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

This table compares monthly weather conditions in Ruokolahti, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-5°C (24°F)46 mm (1.8 inches)98%low
February Weather-6°C (22°F)53 mm (2.1 inches)96%low
March Weather-2°C (28°F)48 mm (1.9 inches)93%moderate
April Weather3°C (38°F)46 mm (1.8 inches)88%moderate
May Weather10°C (50°F)52 mm (2.1 inches)77%moderate
June Weather16°C (61°F)53 mm (2.1 inches)75%high
July Weather18°C (64°F)72 mm (2.8 inches)82%high
August Weather16°C (61°F)86 mm (3.4 inches)84%moderate
September Weather11°C (52°F)70 mm (2.8 inches)90%moderate
October Weather6°C (43°F)73 mm (2.9 inches)93%low
November Weather2°C (35°F)48 mm (1.9 inches)93%low
December Weather-3°C (27°F)73 mm (2.9 inches)95%low

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