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September Weather in Ullava, Finland

Last updated: August 23, 2025

In September, the average temperature in Ullava, Finland hovers around 9°C (49°F), with fluctuations ranging from a chilly -5°C (24°F) to a max of 23°C (74°F). Expect a decent amount of rain, with 75 mm (2.9 in) of precipitation spread over about 13 days. Additionally, the atmosphere is quite humid, with an average humidity level of 89%. Prepare accordingly!

September Temperature in Ullava

In September in Ullava, the average temperature is 9°C (49°F), with a maximum that can reach 23°C (74°F) and a minimum that can drop as low as -5°C (24°F). This variation in temperature makes it essential for travelers to pack layers to stay comfortable during their visit.

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

The chart illustrates September temperature patterns in Ullava, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ullava, September typically has an average temperature of 9°C (49°F), with highs reaching up to 23°C (74°F) and lows dropping to around -5°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec222027364759625849403226
Data source: Temperature data for Ullava 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 Ullava

In Ullava in September, the precipitation amount is 75 mm (2.9 in) spread over 13 days.

September Precipitation Trends in Ullava

The chart displays monthly precipitation patterns in Ullava, 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 Ullava, September typically receives around 75 mm (2.9 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec384141436155689275886048
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ullava

In Ullava in September, humidity is 89%. With an average temperature of 9°C (49°F), this humidity feels like a persistent dampness that clings to your clothes and skin, making it challenging to stay comfortable while traveling.

September Average Humidity in Ullava

This chart illustrates the average monthly humidity levels in Ullava, 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 Ullava is approximately 89%, 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 September generated using information from the Copernicus Climate Change Service.

September UV Index in Ullava

In Ullava 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 Ullava, you can check the information here.

Maximum UV Index Levels in Ullava for September

The chart shows the monthly maximum UV Index (UVI) for Ullava 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 Ullava typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112356653211
Data source: Ullava 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 Ullava Compares to Other Months

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

This table compares monthly weather conditions in Ullava, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)38 mm (1.5 inches)97%low
February Weather-7°C (21°F)41 mm (1.6 inches)95%low
March Weather-3°C (27°F)41 mm (1.6 inches)92%low
April Weather2°C (36°F)43 mm (1.7 inches)85%moderate
May Weather8°C (48°F)61 mm (2.4 inches)77%moderate
June Weather15°C (59°F)55 mm (2.2 inches)74%high
July Weather17°C (62°F)68 mm (2.7 inches)79%high
August Weather14°C (58°F)92 mm (3.6 inches)82%moderate
September Weather9°C (49°F)75 mm (2.9 inches)89%moderate
October Weather4°C (40°F)88 mm (3.5 inches)93%low
November Weather0°C (33°F)60 mm (2.4 inches)93%low
December Weather-3°C (26°F)48 mm (1.9 inches)95%low

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