September Weather in Sulkava, Finland

Last updated: August 23, 2025

In September, the average temperature in Sulkava, Finland hovers around 11°C (51°F). Expect temperatures to vary, with a minimum of -1°C (31°F) and a maximum reaching 22°C (72°F). Precipitation is quite notable, averaging 71 mm (2.8 in) over 13 days, and the air is typically humid, with an average humidity of 90%.

September Temperature in Sulkava

In September in Sulkava, the average temperature is 11°C (51°F). Maximums can reach 22°C (72°F), while minimums can drop as low as -1°C (31°F). This range makes it essential to pack layers for your travels, ensuring you're prepared for both warm days and chilly evenings.

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

The chart illustrates September temperature patterns in Sulkava, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sulkava, 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 -1°C (31°F).

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

September Precipitation in Sulkava

In Sulkava in September, the total precipitation amount is 71 mm (2.8 in) occurring over the course of 13 days.

September Precipitation Trends in Sulkava

The chart displays monthly precipitation patterns in Sulkava, 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 Sulkava, September typically receives around 71 mm (2.8 inches) of precipitation spread over approximately 13 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 Sulkava

In Sulkava 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 Sulkava

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

In Sulkava 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 Sulkava, you can check the information here.

Maximum UV Index Levels in Sulkava for September

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

Data source: Sulkava 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 Sulkava Compares to Other Months

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

This table compares monthly weather conditions in Sulkava, 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)	48 mm (1.9 inches)	98%	low
February Weather	-6°C (22°F)	47 mm (1.8 inches)	96%	low
March Weather	-3°C (28°F)	45 mm (1.8 inches)	93%	moderate
April Weather	2°C (37°F)	45 mm (1.8 inches)	88%	moderate
May Weather	10°C (50°F)	52 mm (2.0 inches)	77%	moderate
June Weather	16°C (61°F)	64 mm (2.5 inches)	75%	high
July Weather	18°C (64°F)	72 mm (2.8 inches)	82%	high
August Weather	16°C (61°F)	85 mm (3.3 inches)	84%	moderate
September Weather	11°C (51°F)	71 mm (2.8 inches)	90%	moderate
October Weather	5°C (42°F)	75 mm (2.9 inches)	93%	low
November Weather	1°C (34°F)	55 mm (2.2 inches)	93%	low
December Weather	-3°C (26°F)	72 mm (2.8 inches)	95%	low