September Weather in Orimattila, Finland

Last updated: August 23, 2025

In September, the average temperature in Orimattila, Finland is a mild 11°C (52°F), with a slight chill as the minimum can dip to -2°C (28°F), while daytime highs can reach up to 24°C (75°F). Expect 60 mm (2.4 in) of precipitation over approximately 12 days, accompanied by a high average humidity of 90%. Prepare for a blend of cool air and occasional showers!

September Temperature in Orimattila

In September in Orimattila, the average temperature is 11°C (52°F). Maximum temperatures can reach 24°C (75°F), while minimum temperatures can fall as low as -2°C (28°F). This variation makes it advisable for travelers to pack layers to accommodate both warm and chilly conditions.

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

The chart illustrates September temperature patterns in Orimattila, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Orimattila, 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 -2°C (28°F).

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

September Precipitation in Orimattila

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

September Precipitation Trends in Orimattila

The chart displays monthly precipitation patterns in Orimattila, 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 Orimattila, 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 Orimattila

In Orimattila 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 Orimattila

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

In Orimattila 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 Orimattila for better planning.

Maximum UV Index Levels in Orimattila for September

The chart shows the monthly maximum UV Index (UVI) for Orimattila 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 Orimattila typically reaches 4, which falls under the moderate exposure category.

Data source: Orimattila 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 Orimattila Compares to Other Months

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

This table compares monthly weather conditions in Orimattila, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-4°C (26°F)	52 mm (2.0 inches)	98%	low
February Weather	-4°C (24°F)	47 mm (1.8 inches)	96%	low
March Weather	-1°C (30°F)	47 mm (1.8 inches)	93%	moderate
April Weather	4°C (39°F)	47 mm (1.8 inches)	87%	moderate
May Weather	10°C (51°F)	51 mm (2.0 inches)	75%	moderate
June Weather	16°C (62°F)	58 mm (2.3 inches)	74%	high
July Weather	18°C (64°F)	73 mm (2.9 inches)	80%	high
August Weather	16°C (61°F)	75 mm (3.0 inches)	85%	moderate
September Weather	11°C (52°F)	60 mm (2.4 inches)	90%	moderate
October Weather	6°C (43°F)	79 mm (3.1 inches)	94%	low
November Weather	2°C (36°F)	55 mm (2.2 inches)	94%	low
December Weather	-2°C (29°F)	73 mm (2.9 inches)	96%	low