October Weather in Siilinjaervi, Finland

Last updated: August 23, 2025

In October, the average temperature in Siilinjaervi, Finland hovers around a chill 5°C (41°F), with temperatures ranging from a crisp -5°C (23°F) to a mild 19°C (66°F). Expect 84 mm (3.3 in) of precipitation over 17 days, accompanied by a high average humidity of 95%. Prepare for a wet and cool atmosphere as you explore!

October Temperature in Siilinjaervi

In October in Siilinjaervi, the average temperature is 5°C (41°F), with maximums reaching 19°C (66°F) and minimums dropping to as low as -5°C (23°F). Travelers should be prepared for chilly weather but can also enjoy milder days, making it an ideal time for exploring the local attractions with layered clothing.

October Weather in Siilinjaervi: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Siilinjaervi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siilinjaervi, October typically has an average temperature of 5°C (41°F), with highs reaching up to 19°C (66°F) and lows dropping to around -5°C (23°F).

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

October Precipitation in Siilinjaervi

In Siilinjaervi in October, the precipitation amount is 84 mm (3.3 in) spread over 17 days, indicating a relatively wet period.

October Precipitation Trends in Siilinjaervi

The chart displays monthly precipitation patterns in Siilinjaervi, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Siilinjaervi, October typically receives around 84 mm (3.3 inches) of precipitation spread over approximately 17 days.

Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

October Humidity in Siilinjaervi

In Siilinjaervi in October, humidity is 95%. With an average temperature of 5°C (41°F), this humidity feels like a damp and chilly blanket, making travel uncomfortable as the cold moisture clings to your skin and saps your energy.

October Average Humidity in Siilinjaervi

This chart illustrates the average monthly humidity levels in Siilinjaervi, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Siilinjaervi is approximately 95%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Siilinjaervi

In Siilinjaervi in October, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Siilinjaervi, you can visit Hourly UV Index in Siilinjaervi.

Maximum UV Index Levels in Siilinjaervi for October

The chart shows the monthly maximum UV Index (UVI) for Siilinjaervi in October, 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 October, the maximum UV index in Siilinjaervi typically reaches 2, which falls under the low exposure category.

Data source: Siilinjaervi October 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 October Weather in Siilinjaervi Compares to Other Months

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

This table compares monthly weather conditions in Siilinjaervi, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-6°C (21°F)	49 mm (1.9 inches)	99%	low
February Weather	-7°C (19°F)	43 mm (1.7 inches)	98%	low
March Weather	-3°C (26°F)	43 mm (1.7 inches)	95%	moderate
April Weather	2°C (35°F)	42 mm (1.6 inches)	87%	moderate
May Weather	8°C (47°F)	56 mm (2.2 inches)	78%	moderate
June Weather	15°C (60°F)	66 mm (2.6 inches)	75%	high
July Weather	17°C (64°F)	84 mm (3.3 inches)	83%	high
August Weather	15°C (60°F)	103 mm (4.0 inches)	88%	moderate
September Weather	10°C (50°F)	91 mm (3.6 inches)	92%	moderate
October Weather	5°C (41°F)	84 mm (3.3 inches)	95%	low
November Weather	1°C (33°F)	77 mm (3.0 inches)	94%	low
December Weather	-4°C (25°F)	68 mm (2.7 inches)	98%	low