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September Weather in Loppi, Finland

Last updated: August 23, 2025

In Loppi, Finland, the average temperature in September hovers around 11°C (52°F). Visitors can expect a minimum drop to -3°C (28°F) and a pleasant maximum of 24°C (75°F). During this time, precipitation averages 67 mm (2.6 in) over 12 days, combined with a high average humidity of 90%. Be prepared for a mix of cool temperatures and occasional rain!

September Temperature in Loppi

In September in Loppi, the average temperature is 11°C (52°F). Maximum temperatures can reach 24°C (75°F), while minimums can drop as low as -3°C (28°F). It's advisable to pack layers to prepare for both warm afternoons and chilly evenings.

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

The chart illustrates September temperature patterns in Loppi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Loppi, September typically has an average temperature of 11°C (52°F), with highs reaching up to 24°C (75°F) and lows dropping to around -3°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec252429385061636052433628
Data source: Temperature data for Loppi 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 Loppi

In Loppi in September, the precipitation amount is 67 mm (2.6 in) distributed over 12 days.

September Precipitation Trends in Loppi

The chart displays monthly precipitation patterns in Loppi, 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 Loppi, September typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec514446466166868067775366
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Loppi

In Loppi 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 Loppi

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

In Loppi in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Loppi for better planning.

Maximum UV Index Levels in Loppi for September

The chart shows the monthly maximum UV Index (UVI) for Loppi 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 Loppi typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113457754211
Data source: Loppi 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 Loppi Compares to Other Months

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

This table compares monthly weather conditions in Loppi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)51 mm (2.0 inches)97%low
February Weather-4°C (24°F)44 mm (1.7 inches)95%low
March Weather-1°C (30°F)45 mm (1.8 inches)93%moderate
April Weather3°C (39°F)46 mm (1.8 inches)86%moderate
May Weather10°C (50°F)61 mm (2.4 inches)75%moderate
June Weather16°C (61°F)66 mm (2.6 inches)75%high
July Weather17°C (64°F)86 mm (3.4 inches)80%high
August Weather16°C (61°F)80 mm (3.1 inches)83%moderate
September Weather11°C (52°F)67 mm (2.6 inches)90%moderate
October Weather6°C (43°F)77 mm (3.0 inches)93%low
November Weather2°C (36°F)53 mm (2.1 inches)94%low
December Weather-2°C (29°F)66 mm (2.6 inches)95%low

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