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September Weather in Ylitornio, Finland

Last updated: August 23, 2025

In September, the average temperature in Ylitornio, Finland is a cool 8°C (47°F), with temperatures ranging from a chilly -7°C (20°F) to a mild 19°C (67°F). Be prepared for 69 mm (2.7 in) of precipitation over approximately 12 days, contributing to an average humidity of 91%. Plan accordingly for a damp and breezy month!

September Temperature in Ylitornio

In September in Ylitornio, the average temperature is 8°C (47°F). Maximum temperatures can reach 19°C (67°F), while minimums can drop as low as -7°C (20°F). Be prepared for a wide range of temperatures when planning your trip.

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

The chart illustrates September temperature patterns in Ylitornio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ylitornio, September typically has an average temperature of 8°C (47°F), with highs reaching up to 19°C (67°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec141424334457625747362619
Data source: Temperature data for Ylitornio 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.

September Precipitation in Ylitornio

In Ylitornio in September, the precipitation amount is 69 mm (2.7 in) over the span of 12 days.

September Precipitation Trends in Ylitornio

The chart displays monthly precipitation patterns in Ylitornio, 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 Ylitornio, September typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec474245364865749769936568
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ylitornio

In Ylitornio in September, humidity is 91%. With an average temperature of 8°C (47°F), this humidity feels like a chilly dampness that clings to your skin, making it important to dress in layers while traveling.

September Average Humidity in Ylitornio

This chart illustrates the average monthly humidity levels in Ylitornio, 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 Ylitornio is approximately 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec101%99%92%87%82%78%83%87%91%96%98%101%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ylitornio

In Ylitornio 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 Ylitornio, you can check the information here.

Maximum UV Index Levels in Ylitornio for September

The chart shows the monthly maximum UV Index (UVI) for Ylitornio 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 Ylitornio typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112345543111
Data source: Ylitornio 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 Ylitornio Compares to Other Months

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

This table compares monthly weather conditions in Ylitornio, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-10°C (14°F)47 mm (1.8 inches)101%low
February Weather-10°C (15°F)42 mm (1.6 inches)99%low
March Weather-5°C (24°F)45 mm (1.8 inches)92%low
April Weather1°C (33°F)36 mm (1.4 inches)86%moderate
May Weather7°C (45°F)48 mm (1.9 inches)82%moderate
June Weather14°C (57°F)65 mm (2.6 inches)78%moderate
July Weather17°C (62°F)74 mm (2.9 inches)83%moderate
August Weather14°C (57°F)97 mm (3.8 inches)87%moderate
September Weather8°C (47°F)69 mm (2.7 inches)91%moderate
October Weather2°C (36°F)93 mm (3.7 inches)96%low
November Weather-3°C (27°F)64 mm (2.5 inches)98%low
December Weather-7°C (20°F)68 mm (2.7 inches)101%low

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