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September Weather in Merikarvia, Finland

Last updated: August 23, 2025

In Merikarvia, Finland, the average temperature in September is a mild 12°C (54°F), with a comfortable range from a minimum of 3°C (38°F) to a maximum of 22°C (72°F). Expect 86 mm (3.4 in) of precipitation over about 12 days, contributing to a high average humidity of 86%. Enjoy the fresh, vibrant atmosphere that this time of year brings!

September Temperature in Merikarvia

In September in Merikarvia, the average temperature is 12°C (54°F). Maximum temperatures can reach 22°C (72°F), while the minimum can drop to as low as 3°C (38°F). This mild climate makes it an ideal time for exploring Merikarvia and enjoying outdoor activities.

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

The chart illustrates September temperature patterns in Merikarvia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Merikarvia, September typically has an average temperature of 12°C (54°F), with highs reaching up to 22°C (72°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec292731384758636154453932
Data source: Temperature data for Merikarvia 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 Merikarvia

In Merikarvia in September, the precipitation amount is 86 mm (3.4 in) over a span of 12 days.

September Precipitation Trends in Merikarvia

The chart displays monthly precipitation patterns in Merikarvia, 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 Merikarvia, September typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec4547464137497293861017779
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Merikarvia

In Merikarvia in September, humidity is 86%. With an average temperature of 12°C (54°F), this humidity feels like a damp blanket wrapping around you, making outdoor activities uncomfortable and travel challenging due to the heavy, muggy atmosphere.

September Average Humidity in Merikarvia

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

In Merikarvia 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 Merikarvia, you can check the information here.

Maximum UV Index Levels in Merikarvia for September

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

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

This table compares monthly weather conditions in Merikarvia, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)45 mm (1.8 inches)92%low
February Weather-3°C (27°F)47 mm (1.8 inches)90%low
March Weather-1°C (31°F)46 mm (1.8 inches)89%moderate
April Weather3°C (38°F)41 mm (1.6 inches)85%moderate
May Weather8°C (47°F)37 mm (1.5 inches)77%moderate
June Weather14°C (58°F)49 mm (1.9 inches)78%high
July Weather17°C (63°F)72 mm (2.8 inches)78%high
August Weather16°C (62°F)93 mm (3.6 inches)79%moderate
September Weather12°C (54°F)86 mm (3.4 inches)86%moderate
October Weather7°C (45°F)101 mm (4.0 inches)90%low
November Weather4°C (39°F)77 mm (3.0 inches)91%low
December Weather0°C (33°F)79 mm (3.1 inches)89%low

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