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September Weather in Kiukainen, Finland

Last updated: August 23, 2025

In September, the average temperature in Kiukainen, Finland hovers around 12°C (53°F). Expect a chilly minimum of -1°C (30°F) and a pleasant maximum of 25°C (76°F). With 66 mm (2.6 in) of precipitation over 12 days, it's a month to keep an umbrella handy. The air remains quite humid, with an average humidity level of 86%.

September Temperature in Kiukainen

In September in Kiukainen, the average temperature is 12°C (53°F), with maximums reaching 25°C (76°F) and minimums dropping as low as -1°C (30°F). It's a time to be prepared for a range of weather conditions, so travelers should pack layers to stay comfortable.

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

The chart illustrates September temperature patterns in Kiukainen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kiukainen, September typically has an average temperature of 12°C (53°F), with highs reaching up to 25°C (76°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec282531395061646153443730
Data source: Temperature data for Kiukainen 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 Kiukainen

In Kiukainen in September, the precipitation amount is 66 mm (2.6 in) over the course of 12 days.

September Precipitation Trends in Kiukainen

The chart displays monthly precipitation patterns in Kiukainen, 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 Kiukainen, September typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec423943374453939466745464
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Kiukainen

In Kiukainen in September humidity is 86%. With an average temperature of 12°C (53°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities less enjoyable and prompting the need for warm, layered clothing while exploring the surroundings.

September Average Humidity in Kiukainen

This chart illustrates the average monthly humidity levels in Kiukainen, 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 Kiukainen 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 Kiukainen

In Kiukainen 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 Kiukainen, you can check the information here.

Maximum UV Index Levels in Kiukainen for September

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

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

This table compares monthly weather conditions in Kiukainen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)42 mm (1.7 inches)92%low
February Weather-4°C (26°F)39 mm (1.5 inches)90%low
March Weather0°C (32°F)43 mm (1.7 inches)89%moderate
April Weather4°C (40°F)37 mm (1.5 inches)85%moderate
May Weather10°C (50°F)44 mm (1.7 inches)77%moderate
June Weather16°C (61°F)53 mm (2.1 inches)78%high
July Weather18°C (64°F)93 mm (3.7 inches)78%high
August Weather16°C (61°F)94 mm (3.7 inches)79%moderate
September Weather12°C (53°F)66 mm (2.6 inches)86%moderate
October Weather7°C (44°F)74 mm (2.9 inches)90%low
November Weather3°C (38°F)54 mm (2.1 inches)91%low
December Weather-1°C (31°F)64 mm (2.5 inches)89%low

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