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October Weather in Karstula, Finland

Last updated: August 23, 2025

In October, the average temperature in Karstula, Finland hovers around 4°C (40°F). Expect a chill in the air with minimum temperatures dipping to -11°C (13°F), while highs can reach up to 20°C (68°F). With an average precipitation of 76 mm (3.0 in) spread over 15 days, prepare for some wet weather. Humidity levels are high at 93%, creating a crisp, refreshing atmosphere.

October Temperature in Karstula

In October in Karstula, the average temperature is 4°C (40°F), with maxima reaching 20°C (68°F) and minima dropping as low as -11°C (13°F). Travelers should be prepared for a wide range of temperatures during this time.

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

The chart illustrates October temperature patterns in Karstula, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Karstula, October typically has an average temperature of 4°C (40°F), with highs reaching up to 20°C (68°F) and lows dropping to around -11°C (13°F).
JanFebMarAprMayJunJulAugSepOctNovDec222027354759615848393225
Data source: Temperature data for Karstula generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in Karstula

In Karstula in October, the precipitation amount is 76 mm (3.0 in), recorded over a span of 15 days.

October Precipitation Trends in Karstula

The chart displays monthly precipitation patterns in Karstula, 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 Karstula, October typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec444341466461669074766459
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in Karstula

In Karstula in October, humidity is 93%. With an average temperature of 4°C (40°F), this humidity feels like a cold, damp blanket wrapping around you, making travel uncomfortable and requiring extra layers to stay warm, as every step can feel heavy in the thick, moisture-laden air.

October Average Humidity in Karstula

This chart illustrates the average monthly humidity levels in Karstula, 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 Karstula is approximately 93%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec97%95%92%85%77%74%79%82%89%93%93%95%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Karstula

In Karstula 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 Karstula, you can visit Hourly UV Index in Karstula.

Maximum UV Index Levels in Karstula for October

The chart shows the monthly maximum UV Index (UVI) for Karstula 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 Karstula typically reaches 2, which falls under the low exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113456653211
Data source: Karstula 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 Karstula Compares to Other Months

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

This table compares monthly weather conditions in Karstula, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)44 mm (1.7 inches)97%low
February Weather-7°C (20°F)43 mm (1.7 inches)95%low
March Weather-3°C (27°F)41 mm (1.6 inches)92%moderate
April Weather2°C (35°F)46 mm (1.8 inches)85%moderate
May Weather8°C (47°F)64 mm (2.5 inches)77%moderate
June Weather15°C (60°F)61 mm (2.4 inches)74%high
July Weather16°C (62°F)66 mm (2.6 inches)79%high
August Weather14°C (58°F)90 mm (3.6 inches)82%moderate
September Weather9°C (49°F)74 mm (2.9 inches)89%moderate
October Weather4°C (40°F)76 mm (3.0 inches)93%low
November Weather0°C (33°F)64 mm (2.5 inches)93%low
December Weather-4°C (26°F)59 mm (2.3 inches)95%low

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