September Weather in Hirvensalmi, Finland

Last updated: August 23, 2025

In September, the average temperature in Hirvensalmi, Finland hovers around 11°C (51°F), with temperatures ranging from a chilly 0°C (32°F) to a delightful 22°C (72°F). Expect 72 mm (2.8 in) of precipitation across 14 days, complemented by a high average humidity of 90%. Whether you're planning outdoor adventures or cozy indoor retreats, be prepared for a mix of weather!

September Temperature in Hirvensalmi

In September in Hirvensalmi, the average temperature is 11°C (51°F). Maximums can reach 22°C (72°F) and minimums can be as low as 0°C (32°F). This makes it a perfect time for travelers to enjoy mild weather with the potential for both warm and cool experiences.

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

The chart illustrates September temperature patterns in Hirvensalmi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hirvensalmi, September typically has an average temperature of 11°C (51°F), with highs reaching up to 22°C (72°F) and lows dropping to around 0°C (32°F).

Data source: Temperature data for Hirvensalmi generated using information from the Copernicus Climate Change Service.

September Precipitation in Hirvensalmi

In Hirvensalmi in September, the total precipitation amount is 72 mm (2.8 in) spread over the course of 14 days.

September Precipitation Trends in Hirvensalmi

The chart displays monthly precipitation patterns in Hirvensalmi, 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 Hirvensalmi, September typically receives around 72 mm (2.8 inches) of precipitation spread over approximately 14 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Hirvensalmi

In Hirvensalmi in September, humidity is 90%. With an average temperature of 11°C (51°F), this humidity feels like a damp blanket wrapping around you, making traveling uncomfortable and sticky, as every step leaves you feeling sluggish and clinging to the air.

September Average Humidity in Hirvensalmi

This chart illustrates the average monthly humidity levels in Hirvensalmi, 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 Hirvensalmi is approximately 90%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hirvensalmi

In Hirvensalmi 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 Hirvensalmi, you can check the information here.

Maximum UV Index Levels in Hirvensalmi for September

The chart shows the monthly maximum UV Index (UVI) for Hirvensalmi 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 Hirvensalmi typically reaches 3, which falls under the moderate exposure category.

Data source: Hirvensalmi 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 Hirvensalmi Compares to Other Months

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

This table compares monthly weather conditions in Hirvensalmi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (23°F)	47 mm (1.9 inches)	98%	low
February Weather	-6°C (22°F)	44 mm (1.7 inches)	96%	low
March Weather	-2°C (28°F)	44 mm (1.7 inches)	93%	moderate
April Weather	2°C (36°F)	43 mm (1.7 inches)	87%	moderate
May Weather	9°C (49°F)	55 mm (2.2 inches)	75%	moderate
June Weather	16°C (61°F)	66 mm (2.6 inches)	74%	high
July Weather	17°C (64°F)	79 mm (3.1 inches)	80%	high
August Weather	16°C (60°F)	89 mm (3.5 inches)	85%	moderate
September Weather	11°C (51°F)	72 mm (2.8 inches)	90%	moderate
October Weather	6°C (42°F)	76 mm (3.0 inches)	94%	low
November Weather	2°C (35°F)	57 mm (2.3 inches)	94%	low
December Weather	-3°C (27°F)	69 mm (2.7 inches)	96%	low