September Weather in Bollnaes, Sweden

Last updated: August 27, 2025

In September, the average temperature in Bollnaes, Sweden is a cool 11°C (51°F), with a minimum dipping to -1°C (31°F) and a maximum reaching 24°C (75°F). Expect 56 mm (2.2 in) of precipitation over approximately 11 days, accompanied by a high average humidity of 87%. 🌧️

September Temperature in Bollnaes

In September in Bollnaes, the average temperature is 11°C (51°F). The maximum can reach 24°C (75°F), while the minimum can be as low as -1°C (31°F). Overall, this month offers a comfortable climate for travelers who enjoy mild weather and are prepared for temperature fluctuations.

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

The chart illustrates September temperature patterns in Bollnaes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bollnaes, September typically has an average temperature of 11°C (51°F), with highs reaching up to 24°C (75°F) and lows dropping to around -1°C (31°F).

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

September Precipitation in Bollnaes

In Bollnaes in September, the precipitation amount is 56 mm (2.2 in) over the course of 11 days.

September Precipitation Trends in Bollnaes

The chart displays monthly precipitation patterns in Bollnaes, 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 Bollnaes, September typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 11 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 Bollnaes

In Bollnaes in September humidity is 87%. With an average temperature of 11°C (51°F), this humidity feels like a damp chill wrapping around you, making outdoor excursions a bit uncomfortable as the air feels thick and heavy, urging you to seek shelter more often than not.

September Average Humidity in Bollnaes

This chart illustrates the average monthly humidity levels in Bollnaes, 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 Bollnaes is approximately 87%, 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 Bollnaes

In Bollnaes in September, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Bollnaes for better planning.

Maximum UV Index Levels in Bollnaes for September

The chart shows the monthly maximum UV Index (UVI) for Bollnaes 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 Bollnaes typically reaches 4, which falls under the moderate exposure category.

Data source: Bollnaes 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 Bollnaes Compares to Other Months

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

This table compares monthly weather conditions in Bollnaes, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-3°C (26°F)	40 mm (1.6 inches)	96%	low
February Weather	-3°C (26°F)	41 mm (1.6 inches)	93%	low
March Weather	0°C (32°F)	40 mm (1.6 inches)	91%	moderate
April Weather	4°C (39°F)	37 mm (1.4 inches)	84%	moderate
May Weather	9°C (49°F)	55 mm (2.2 inches)	74%	moderate
June Weather	15°C (60°F)	75 mm (2.9 inches)	73%	high
July Weather	16°C (62°F)	85 mm (3.4 inches)	73%	high
August Weather	15°C (59°F)	108 mm (4.3 inches)	78%	moderate
September Weather	11°C (51°F)	56 mm (2.2 inches)	87%	moderate
October Weather	6°C (43°F)	87 mm (3.4 inches)	92%	low
November Weather	1°C (35°F)	45 mm (1.8 inches)	94%	low
December Weather	-2°C (28°F)	60 mm (2.4 inches)	94%	low