September Weather in Kisko, Finland

Last updated: August 23, 2025

In September, the average temperature in Kisko, Finland hovers around 12°C (54°F), offering a refreshing climate. Expect a minimum chill of -3°C (28°F) and the occasional warmth peaking at 23°C (74°F). With 62 mm (2.4 in) of precipitation spread over 13 days, it's wise to keep an umbrella handy. Additionally, be prepared for a high average humidity of 90%, which can make the air feel quite damp and invigorating.

September Temperature in Kisko

In September in Kisko, the average temperature is 12°C (54°F), with maximums reaching up to 23°C (74°F) and minimums dropping as low as -3°C (28°F). This diverse temperature range makes Kisko a great destination for travelers looking to experience both mild and cooler weather.

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

The chart illustrates September temperature patterns in Kisko, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kisko, September typically has an average temperature of 12°C (54°F), with highs reaching up to 23°C (74°F) and lows dropping to around -3°C (28°F).

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

September Precipitation in Kisko

In Kisko in September, the precipitation amount is 62 mm (2.4 in) over the course of 13 days.

September Precipitation Trends in Kisko

The chart displays monthly precipitation patterns in Kisko, 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 Kisko, September typically receives around 62 mm (2.4 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 Kisko

In Kisko in September, humidity is 90%. With an average temperature of 12°C (54°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities uncomfortable and traveling a bit more draining than usual.

September Average Humidity in Kisko

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

In Kisko 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 Kisko for better planning.

Maximum UV Index Levels in Kisko for September

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

Data source: Kisko 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 Kisko Compares to Other Months

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

This table compares monthly weather conditions in Kisko, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	54 mm (2.1 inches)	97%	low
February Weather	-4°C (26°F)	46 mm (1.8 inches)	95%	low
March Weather	-1°C (31°F)	51 mm (2.0 inches)	93%	moderate
April Weather	4°C (39°F)	39 mm (1.5 inches)	86%	moderate
May Weather	10°C (50°F)	54 mm (2.1 inches)	75%	moderate
June Weather	16°C (62°F)	53 mm (2.1 inches)	75%	high
July Weather	18°C (65°F)	80 mm (3.2 inches)	80%	high
August Weather	16°C (62°F)	93 mm (3.7 inches)	83%	moderate
September Weather	12°C (54°F)	62 mm (2.4 inches)	90%	moderate
October Weather	7°C (45°F)	84 mm (3.3 inches)	93%	low
November Weather	3°C (38°F)	58 mm (2.3 inches)	94%	low
December Weather	-1°C (31°F)	71 mm (2.8 inches)	95%	low