September Weather in Kannonkoski, Finland

Last updated: August 23, 2025

In Kannonkoski, Finland, the average temperature in September hovers around 10°C (49°F). During this time, temperatures can dip as low as -3°C (28°F) and peak at a comfortable 22°C (72°F). Expect a total precipitation of about 77 mm (3.0 in) over approximately 13 days, and be prepared for a high average humidity of 91%, making for a decidedly moist atmosphere.

September Temperature in Kannonkoski

In September in Kannonkoski, the average temperature is 10°C (49°F). Maximums can reach 22°C (72°F), while minimums can drop as low as -3°C (28°F). It's advisable to pack layers for your travel, as the weather can vary significantly throughout the day.

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

The chart illustrates September temperature patterns in Kannonkoski, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kannonkoski, September typically has an average temperature of 10°C (49°F), with highs reaching up to 22°C (72°F) and lows dropping to around -3°C (28°F).

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

September Precipitation in Kannonkoski

In Kannonkoski in September, the precipitation amount is 77 mm (3.0 in) spread over a total of 13 days.

September Precipitation Trends in Kannonkoski

The chart displays monthly precipitation patterns in Kannonkoski, 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 Kannonkoski, September typically receives around 77 mm (3.0 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 Kannonkoski

In Kannonkoski in September, humidity is 91%. With an average temperature of 10°C (49°F), this humidity feels like a thick, damp blanket enveloping you, making travel quite uncomfortable and requiring frequent breaks to rest and rehydrate.

September Average Humidity in Kannonkoski

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

In Kannonkoski 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 Kannonkoski, you can check the information here.

Maximum UV Index Levels in Kannonkoski for September

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

Data source: Kannonkoski 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 Kannonkoski Compares to Other Months

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

This table compares monthly weather conditions in Kannonkoski, 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 (22°F)	42 mm (1.7 inches)	99%	low
February Weather	-7°C (20°F)	41 mm (1.6 inches)	97%	low
March Weather	-3°C (27°F)	38 mm (1.5 inches)	95%	moderate
April Weather	2°C (35°F)	44 mm (1.7 inches)	87%	moderate
May Weather	8°C (47°F)	62 mm (2.4 inches)	78%	moderate
June Weather	15°C (60°F)	56 mm (2.2 inches)	74%	high
July Weather	17°C (62°F)	72 mm (2.8 inches)	80%	high
August Weather	15°C (59°F)	88 mm (3.5 inches)	85%	moderate
September Weather	10°C (49°F)	77 mm (3.0 inches)	91%	moderate
October Weather	5°C (41°F)	82 mm (3.2 inches)	95%	low
November Weather	0°C (33°F)	64 mm (2.5 inches)	94%	low
December Weather	-4°C (26°F)	56 mm (2.2 inches)	98%	low