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September Weather in Viiala, Finland

Last updated: August 23, 2025

In September, the average temperature in Viiala, Finland hovers around 11°C (52°F). Expect a chilly minimum dipping to -1°C (30°F), while the maximum can reach a pleasant 23°C (73°F). Be prepared for 61 mm (2.4 in) of precipitation spread over 12 days, and don't forget that the air is quite humid, with an average humidity of 90%.

September Temperature in Viiala

In September in Viiala, the average temperature is 11°C (52°F), with maximums reaching 23°C (73°F) and minimums dropping as low as -1°C (30°F). Visitors should be prepared for a wide range of temperatures during their travels.

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

The chart illustrates September temperature patterns in Viiala, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Viiala, September typically has an average temperature of 11°C (52°F), with highs reaching up to 23°C (73°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec252429385061636052433629
Data source: Temperature data for Viiala 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 Viiala

In Viiala in September, the total precipitation amount is 61 mm (2.4 in), which occurs over a span of 12 days.

September Precipitation Trends in Viiala

The chart displays monthly precipitation patterns in Viiala, 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 Viiala, September typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec463941425670778361765462
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Viiala

In Viiala in September, humidity is 90%. With an average temperature of 11°C (52°F), this humidity feels like a heavy blanket that clings to your skin, making travel uncomfortable and muggy.

September Average Humidity in Viiala

This chart illustrates the average monthly humidity levels in Viiala, 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 Viiala is approximately 90%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec97%95%93%87%75%75%80%83%90%93%94%95%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Viiala

In Viiala 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 Viiala, you can check the information here.

Maximum UV Index Levels in Viiala for September

The chart shows the monthly maximum UV Index (UVI) for Viiala 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 Viiala typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113456653211
Data source: Viiala 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 Viiala Compares to Other Months

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

This table compares monthly weather conditions in Viiala, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (26°F)46 mm (1.8 inches)97%low
February Weather-5°C (24°F)39 mm (1.6 inches)95%low
March Weather-1°C (30°F)41 mm (1.6 inches)93%moderate
April Weather3°C (38°F)42 mm (1.7 inches)86%moderate
May Weather10°C (50°F)56 mm (2.2 inches)75%moderate
June Weather16°C (61°F)70 mm (2.8 inches)75%high
July Weather17°C (63°F)77 mm (3.0 inches)80%high
August Weather16°C (61°F)83 mm (3.3 inches)83%moderate
September Weather11°C (52°F)61 mm (2.4 inches)90%moderate
October Weather6°C (43°F)76 mm (3.0 inches)93%low
November Weather2°C (36°F)54 mm (2.1 inches)94%low
December Weather-2°C (29°F)62 mm (2.4 inches)95%low

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