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September Weather in Lavia, Finland

Last updated: August 23, 2025

In September, the average temperature in Lavia, Finland hovers around 11°C (52°F), with minimum lows plummeting to -2°C (28°F), while maximum highs can reach 24°C (76°F). Expect 68 mm (2.7 in) of precipitation over approximately 12 days, and prepare for a relatively high average humidity of 86%.

September Temperature in Lavia

In September in Lavia, the average temperature is 11°C (52°F). The maximum can reach 24°C (76°F), while the minimum can drop as low as -2°C (28°F). Be prepared for a diverse range of weather conditions when traveling to Lavia during this month.

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

The chart illustrates September temperature patterns in Lavia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Lavia, September typically has an average temperature of 11°C (52°F), with highs reaching up to 24°C (76°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec262430395061636052433629
Data source: Temperature data for Lavia 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 Lavia

In Lavia in September, the precipitation amount is 68 mm (2.7 in) over the course of 12 days.

September Precipitation Trends in Lavia

The chart displays monthly precipitation patterns in Lavia, 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 Lavia, September typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec4441454350638210268785964
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Lavia

In Lavia in September humidity is 86%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and prompting travelers to seek sheltered spots or indoor attractions to escape the uncomfortable dampness.

September Average Humidity in Lavia

This chart illustrates the average monthly humidity levels in Lavia, 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 Lavia is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%89%85%77%78%78%79%86%90%91%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Lavia

In Lavia 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 Lavia, you can check the information here.

Maximum UV Index Levels in Lavia for September

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

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

This table compares monthly weather conditions in Lavia, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (26°F)44 mm (1.7 inches)92%low
February Weather-5°C (24°F)41 mm (1.6 inches)90%low
March Weather-1°C (30°F)45 mm (1.8 inches)89%moderate
April Weather4°C (39°F)43 mm (1.7 inches)85%moderate
May Weather10°C (50°F)50 mm (2.0 inches)77%moderate
June Weather16°C (61°F)63 mm (2.5 inches)78%high
July Weather17°C (64°F)82 mm (3.2 inches)78%high
August Weather16°C (61°F)102 mm (4.0 inches)79%moderate
September Weather11°C (52°F)68 mm (2.7 inches)86%moderate
October Weather6°C (43°F)78 mm (3.1 inches)90%low
November Weather2°C (36°F)59 mm (2.3 inches)91%low
December Weather-2°C (29°F)64 mm (2.5 inches)89%low

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