September Weather in Alavus, Finland

Last updated: August 23, 2025

In September, the average temperature in Alavus, Finland hovers around 10°C (50°F), with a minimum dipping to -4°C (24°F) and a pleasant maximum reaching 23°C (73°F). Expect about 70 mm (2.8 in) of precipitation over 13 days, contributing to a notably high average humidity of 89%.

September Temperature in Alavus

In September in Alavus, the average temperature is 10°C (50°F). Maximum temperatures can reach 23°C (73°F), while minimums may drop as low as -4°C (24°F). Be prepared for a mix of mild and chilly weather if you're planning to travel during this time.

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

The chart illustrates September temperature patterns in Alavus, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alavus, September typically has an average temperature of 10°C (50°F), with highs reaching up to 23°C (73°F) and lows dropping to around -4°C (24°F).

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

September Precipitation in Alavus

In Alavus in September, the precipitation amount is 70 mm (2.8 in) spread over 13 days.

September Precipitation Trends in Alavus

The chart displays monthly precipitation patterns in Alavus, 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 Alavus, September typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 13 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 Alavus

In Alavus in September, humidity is 89%. With an average temperature of 10°C (50°F), this humidity feels like a dense blanket wrapping around you, making travel feel damp and chilly, and urging you to dress in layers for comfort.

September Average Humidity in Alavus

This chart illustrates the average monthly humidity levels in Alavus, 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 Alavus is approximately 89%, 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 Alavus

In Alavus 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 Alavus, you can check the information here.

Maximum UV Index Levels in Alavus for September

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

Data source: Alavus 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 Alavus Compares to Other Months

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

This table compares monthly weather conditions in Alavus, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (24°F)	41 mm (1.6 inches)	97%	low
February Weather	-6°C (22°F)	40 mm (1.6 inches)	95%	low
March Weather	-2°C (28°F)	43 mm (1.7 inches)	92%	moderate
April Weather	3°C (38°F)	46 mm (1.8 inches)	85%	moderate
May Weather	9°C (49°F)	59 mm (2.3 inches)	77%	moderate
June Weather	15°C (60°F)	61 mm (2.4 inches)	74%	high
July Weather	17°C (62°F)	55 mm (2.2 inches)	79%	high
August Weather	15°C (59°F)	83 mm (3.3 inches)	82%	moderate
September Weather	10°C (50°F)	70 mm (2.8 inches)	89%	moderate
October Weather	5°C (41°F)	73 mm (2.9 inches)	93%	low
November Weather	1°C (34°F)	62 mm (2.4 inches)	93%	low
December Weather	-3°C (27°F)	54 mm (2.1 inches)	95%	low