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September Weather in Vaestaboland, Finland

Last updated: August 23, 2025

In September, the average temperature in Vaestaboland, Finland hovers around 13°C (55°F), with temperatures ranging from a brisk 1°C (35°F) to a warm 22°C (72°F). Expect 65 mm (2.6 in) of precipitation spread over about 11 days, contributing to an average humidity of 86%. Embrace the diverse weather this month brings!

September Temperature in Vaestaboland

In September in Vaestaboland, the average temperature is 13°C (55°F). Maximums can reach 22°C (72°F), while minimums can drop as low as 1°C (35°F). It’s advisable to pack layers for your trip to ensure you stay comfortable during the varying temperatures.

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

The chart illustrates September temperature patterns in Vaestaboland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vaestaboland, September typically has an average temperature of 13°C (55°F), with highs reaching up to 22°C (72°F) and lows dropping to around 1°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec302732394960656355464033
Data source: Temperature data for Vaestaboland 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 Vaestaboland

In Vaestaboland in September, the precipitation amount is 65 mm (2.6 in) over a span of 11 days.

September Precipitation Trends in Vaestaboland

The chart displays monthly precipitation patterns in Vaestaboland, 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 Vaestaboland, September typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec504245304137607965876379
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Vaestaboland

In Vaestaboland in September humidity is 86%. With an average temperature of 13°C (55°F), this humidity feels like a damp blanket clinging to your skin, making travel quite uncomfortable and urging you to seek cooler, dryer spots.

September Average Humidity in Vaestaboland

This chart illustrates the average monthly humidity levels in Vaestaboland, 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 Vaestaboland is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%89%85%77%78%78%79%86%90%91%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Vaestaboland

In Vaestaboland 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 Vaestaboland for better planning.

Maximum UV Index Levels in Vaestaboland for September

The chart shows the monthly maximum UV Index (UVI) for Vaestaboland 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 Vaestaboland typically reaches 4, which falls under the moderate exposure category.
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Data source: Vaestaboland 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 Vaestaboland Compares to Other Months

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

This table compares monthly weather conditions in Vaestaboland, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (30°F)50 mm (2.0 inches)92%low
February Weather-3°C (28°F)42 mm (1.7 inches)90%low
March Weather0°C (32°F)45 mm (1.8 inches)89%moderate
April Weather4°C (40°F)30 mm (1.2 inches)85%moderate
May Weather9°C (49°F)41 mm (1.6 inches)77%moderate
June Weather16°C (61°F)37 mm (1.5 inches)78%high
July Weather18°C (65°F)60 mm (2.4 inches)78%high
August Weather17°C (63°F)79 mm (3.1 inches)79%moderate
September Weather13°C (55°F)65 mm (2.6 inches)86%moderate
October Weather8°C (47°F)87 mm (3.4 inches)90%low
November Weather5°C (41°F)63 mm (2.5 inches)91%low
December Weather1°C (34°F)79 mm (3.1 inches)89%low

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