September Weather in Vammala, Finland

Last updated: August 23, 2025

In September, the average temperature in Vammala, Finland is a cool 11°C (52°F). Expect chilly nights with minimums dipping to -3°C (27°F), while daytime highs may reach a pleasant 24°C (76°F). Be prepared for some rain, as the area sees about 60 mm (2.4 in) of precipitation over 12 days, and humidity is relatively high at 90%.

September Temperature in Vammala

In September in Vammala, the average temperature is 11°C (52°F). Maximums can reach 24°C (76°F), while minimums can dip as low as -3°C (27°F). It's a perfect time for travelers to bundle up for the chilly nights and enjoy the mild daytime weather.

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

The chart illustrates September temperature patterns in Vammala, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vammala, 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 -3°C (27°F).

Data source: Temperature data for Vammala generated using information from the Copernicus Climate Change Service.

September Precipitation in Vammala

In Vammala in September, the precipitation amount is 60 mm (2.4 in) over a span of 12 days.

September Precipitation Trends in Vammala

The chart displays monthly precipitation patterns in Vammala, 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 Vammala, September typically receives around 60 mm (2.4 inches) of precipitation spread over approximately 12 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Vammala

In Vammala 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 Vammala

This chart illustrates the average monthly humidity levels in Vammala, 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 Vammala is approximately 90%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Vammala

In Vammala 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 Vammala, you can check the information here.

Maximum UV Index Levels in Vammala for September

The chart shows the monthly maximum UV Index (UVI) for Vammala 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 Vammala typically reaches 3, which falls under the moderate exposure category.

Data source: Vammala 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 Vammala Compares to Other Months

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

This table compares monthly weather conditions in Vammala, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (26°F)	45 mm (1.8 inches)	97%	low
February Weather	-4°C (24°F)	41 mm (1.6 inches)	95%	low
March Weather	-1°C (30°F)	43 mm (1.7 inches)	93%	moderate
April Weather	4°C (39°F)	42 mm (1.6 inches)	86%	moderate
May Weather	10°C (50°F)	54 mm (2.1 inches)	75%	moderate
June Weather	16°C (61°F)	65 mm (2.5 inches)	75%	high
July Weather	17°C (64°F)	80 mm (3.2 inches)	80%	high
August Weather	16°C (61°F)	84 mm (3.3 inches)	83%	moderate
September Weather	11°C (52°F)	60 mm (2.4 inches)	90%	moderate
October Weather	6°C (43°F)	75 mm (3.0 inches)	93%	low
November Weather	2°C (36°F)	56 mm (2.2 inches)	94%	low
December Weather	-2°C (29°F)	63 mm (2.5 inches)	95%	low