September Weather in Artjaervi, Finland

Last updated: August 23, 2025

In September, the average temperature in Artjaervi, Finland is a cool 11°C (52°F), with a minimum dipping to -2°C (29°F) and a maximum rising to 23°C (74°F). Expect 59 mm (2.3 in) of precipitation spread over 11 days, contributing to a high average humidity of 90%.

September Temperature in Artjaervi

In September in Artjaervi, the average temperature is 11°C (52°F). The maximum can reach 23°C (74°F) and the minimum can be as low as -2°C (29°F). Be sure to pack layers to stay comfortable during your travels!

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

The chart illustrates September temperature patterns in Artjaervi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Artjaervi, September typically has an average temperature of 11°C (52°F), with highs reaching up to 23°C (74°F) and lows dropping to around -2°C (29°F).

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

September Precipitation in Artjaervi

In Artjaervi in September, the precipitation amount is 59 mm (2.3 in) over the course of 11 days.

September Precipitation Trends in Artjaervi

The chart displays monthly precipitation patterns in Artjaervi, 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 Artjaervi, September typically receives around 59 mm (2.3 inches) of precipitation spread over approximately 11 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 Artjaervi

In Artjaervi 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 Artjaervi

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

In Artjaervi 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 Artjaervi for better planning.

Maximum UV Index Levels in Artjaervi for September

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

Data source: Artjaervi 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 Artjaervi Compares to Other Months

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

This table compares monthly weather conditions in Artjaervi, 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)	48 mm (1.9 inches)	96%	low
March Weather	-1°C (30°F)	46 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	17°C (62°F)	57 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)	80 mm (3.1 inches)	85%	moderate
September Weather	11°C (52°F)	59 mm (2.3 inches)	90%	moderate
October Weather	6°C (43°F)	78 mm (3.1 inches)	94%	low
November Weather	2°C (36°F)	55 mm (2.1 inches)	94%	low
December Weather	-2°C (29°F)	74 mm (2.9 inches)	96%	low