September Weather in Keitele, Finland

Last updated: August 23, 2025

In September, the average temperature in Keitele, Finland hovers around 10°C (50°F). Expect a range from a chilly -1°C (30°F) to a pleasant 22°C (73°F). The region experiences 86 mm (3.4 in) of precipitation spread over 14 days, with a notable average humidity of 91%. Be prepared for a mix of cool and comfortable days!

September Temperature in Keitele

In September in Keitele, the average temperature is 10°C (50°F), with maximums reaching up to 22°C (73°F) and minimums dipping as low as -1°C (30°F). This variability in temperature makes it important for travelers to pack layers to ensure comfort during their stay.

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

The chart illustrates September temperature patterns in Keitele, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Keitele, September typically has an average temperature of 10°C (50°F), with highs reaching up to 22°C (73°F) and lows dropping to around -1°C (30°F).

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

September Precipitation in Keitele

In Keitele in September, the precipitation amount is 86 mm (3.4 in) over the course of 14 days.

September Precipitation Trends in Keitele

The chart displays monthly precipitation patterns in Keitele, 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 Keitele, September typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 14 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 Keitele

In Keitele in September, humidity is 91%. With an average temperature of 10°C (50°F), this humidity feels like an enveloping dampness that makes traveling a bit uncomfortable, as the moisture clings to your skin and dampens your clothes, soaking up any residual warmth from the cool air.

September Average Humidity in Keitele

This chart illustrates the average monthly humidity levels in Keitele, 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 Keitele is approximately 91%, 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 Keitele

In Keitele 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 Keitele, you can check the information here.

Maximum UV Index Levels in Keitele for September

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

Data source: Keitele 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 Keitele Compares to Other Months

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

This table compares monthly weather conditions in Keitele, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	46 mm (1.8 inches)	99%	low
February Weather	-7°C (20°F)	43 mm (1.7 inches)	97%	low
March Weather	-3°C (26°F)	40 mm (1.6 inches)	95%	moderate
April Weather	2°C (35°F)	44 mm (1.7 inches)	87%	moderate
May Weather	8°C (47°F)	56 mm (2.2 inches)	78%	moderate
June Weather	15°C (59°F)	59 mm (2.3 inches)	74%	high
July Weather	17°C (63°F)	79 mm (3.1 inches)	80%	high
August Weather	15°C (59°F)	90 mm (3.6 inches)	85%	moderate
September Weather	10°C (50°F)	86 mm (3.4 inches)	91%	moderate
October Weather	5°C (41°F)	86 mm (3.4 inches)	95%	low
November Weather	0°C (33°F)	71 mm (2.8 inches)	94%	low
December Weather	-4°C (25°F)	62 mm (2.5 inches)	98%	low