September Weather in Kaustinen, Finland

Last updated: August 23, 2025

In September, the average temperature in Kaustinen, Finland hovers around 10°C (50°F). Expect a minimum dip to -4°C (25°F) and a potential maximum rise to 23°C (73°F). Rainfall contributes to an average precipitation of 74 mm (2.9 in) over 13 days, accompanied by a high humidity level of 89%.

September Temperature in Kaustinen

In September in Kaustinen, the average temperature is 10°C (50°F). The maximum can reach 23°C (73°F) and the minimum can be as low as -4°C (25°F). Travelers should be prepared for a wide range of temperatures, ensuring to pack layers for both warm and chilly conditions.

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

The chart illustrates September temperature patterns in Kaustinen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kaustinen, September typically has an average temperature of 10°C (50°F), with highs reaching up to 23°C (73°F) and lows dropping to around -4°C (25°F).

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

September Precipitation in Kaustinen

In Kaustinen in September, the precipitation amount is 74 mm (2.9 in) over the course of 13 days.

September Precipitation Trends in Kaustinen

The chart displays monthly precipitation patterns in Kaustinen, 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 Kaustinen, September typically receives around 74 mm (2.9 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 Kaustinen

In Kaustinen in September, humidity is 89%. With an average temperature of 10°C (50°F), this humidity feels like a dense blanket wrapping around you, making travel feel damp and chilly, and urging you to dress in layers for comfort.

September Average Humidity in Kaustinen

This chart illustrates the average monthly humidity levels in Kaustinen, 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 Kaustinen is approximately 89%, 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 Kaustinen

In Kaustinen 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 Kaustinen, you can check the information here.

Maximum UV Index Levels in Kaustinen for September

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

Data source: Kaustinen 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 Kaustinen Compares to Other Months

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

This table compares monthly weather conditions in Kaustinen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	37 mm (1.5 inches)	97%	low
February Weather	-6°C (21°F)	40 mm (1.6 inches)	95%	low
March Weather	-3°C (28°F)	41 mm (1.6 inches)	92%	low
April Weather	2°C (37°F)	42 mm (1.7 inches)	85%	moderate
May Weather	9°C (48°F)	61 mm (2.4 inches)	77%	moderate
June Weather	15°C (59°F)	56 mm (2.2 inches)	74%	high
July Weather	17°C (62°F)	68 mm (2.7 inches)	79%	high
August Weather	15°C (59°F)	92 mm (3.6 inches)	82%	moderate
September Weather	10°C (50°F)	74 mm (2.9 inches)	89%	moderate
October Weather	4°C (40°F)	88 mm (3.5 inches)	93%	low
November Weather	0°C (33°F)	58 mm (2.3 inches)	93%	low
December Weather	-3°C (26°F)	48 mm (1.9 inches)	95%	low