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September Weather in Korsnaes, Finland

Last updated: August 23, 2025

In Korsnaes, Finland, the average temperature in September hovers around 11°C (52°F). You can expect a minimum of 1°C (35°F) and a comfortable maximum of 23°C (73°F). With an average precipitation of 81 mm (3.2 in) spread over 13 days, the atmosphere can be quite humid, with an average humidity level of 88%.

September Temperature in Korsnaes

In September in Korsnaes, the average temperature is 11°C (52°F), with maximums reaching up to 23°C (73°F) and minimums dropping as low as 1°C (35°F). This mild weather makes Korsnaes an ideal destination for travelers seeking comfortable conditions for exploration and outdoor activities.

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

The chart illustrates September temperature patterns in Korsnaes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Korsnaes, 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 (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec272530374758626052433730
Data source: Temperature data for Korsnaes 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 Korsnaes

In Korsnaes in September, the precipitation amount is 81 mm (3.2 in) over the course of 13 days.

September Precipitation Trends in Korsnaes

The chart displays monthly precipitation patterns in Korsnaes, 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 Korsnaes, September typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec404542393957628881876060
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Korsnaes

In Korsnaes in September, humidity is 88%. With an average temperature of 11°C (52°F), this humidity feels like a heavy blanket wrapping around you, making travel uncomfortable and the air feel thick, encouraging you to seek shelter or stay hydrated as you explore.

September Average Humidity in Korsnaes

This chart illustrates the average monthly humidity levels in Korsnaes, 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 Korsnaes is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%93%91%85%77%75%80%82%88%92%92%93%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Korsnaes

In Korsnaes 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 Korsnaes, you can check the information here.

Maximum UV Index Levels in Korsnaes for September

The chart shows the monthly maximum UV Index (UVI) for Korsnaes 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 Korsnaes typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112456653211
Data source: Korsnaes 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 Korsnaes Compares to Other Months

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

This table compares monthly weather conditions in Korsnaes, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-3°C (28°F)40 mm (1.6 inches)95%low
February Weather-4°C (25°F)45 mm (1.8 inches)93%low
March Weather-1°C (30°F)42 mm (1.7 inches)91%low
April Weather3°C (37°F)39 mm (1.5 inches)85%moderate
May Weather8°C (47°F)39 mm (1.5 inches)77%moderate
June Weather14°C (58°F)57 mm (2.3 inches)74%high
July Weather17°C (63°F)62 mm (2.4 inches)80%high
August Weather16°C (60°F)88 mm (3.5 inches)82%moderate
September Weather11°C (52°F)81 mm (3.2 inches)88%moderate
October Weather6°C (44°F)87 mm (3.4 inches)92%low
November Weather3°C (37°F)60 mm (2.4 inches)92%low
December Weather-1°C (30°F)59 mm (2.3 inches)93%low

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