September Weather in Joern, Sweden

Last updated: August 27, 2025

In Joern, Sweden, the average temperature in September hovers around 8°C (47°F), with a minimum of -6°C (21°F) and a maximum of 22°C (72°F). Expect about 62 mm (2.4 in) of precipitation over 10 days, contributing to a high average humidity of 90%. Whether you're braving the cold or enjoying the mild days, come prepared for a moist and varied climate!

September Temperature in Joern

In September in Joern, the average temperature is 8°C (47°F). The maximum can reach 22°C (72°F), while the minimum can drop as low as -6°C (21°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates September temperature patterns in Joern, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Joern, September typically has an average temperature of 8°C (47°F), with highs reaching up to 22°C (72°F) and lows dropping to around -6°C (21°F).

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

September Precipitation in Joern

In Joern in September, the total precipitation amount is 62 mm (2.4 in) over a period of 10 days.

September Precipitation Trends in Joern

The chart displays monthly precipitation patterns in Joern, 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 Joern, September typically receives around 62 mm (2.4 inches) of precipitation spread over approximately 10 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 Joern

In Joern in September, humidity is 90%. With an average temperature of 8°C (47°F), this humidity feels like a damp chill enveloping you, making even short walks outside feel uncomfortable and heavy, as if the air is thick with moisture.

September Average Humidity in Joern

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

In Joern 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 Joern, you can check the information here.

Maximum UV Index Levels in Joern for September

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

Data source: Joern 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 Joern Compares to Other Months

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

This table compares monthly weather conditions in Joern, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-9°C (16°F)	47 mm (1.9 inches)	98%	low
February Weather	-9°C (16°F)	37 mm (1.4 inches)	96%	low
March Weather	-4°C (25°F)	35 mm (1.4 inches)	92%	low
April Weather	1°C (34°F)	29 mm (1.1 inches)	87%	moderate
May Weather	7°C (45°F)	48 mm (1.9 inches)	83%	moderate
June Weather	14°C (57°F)	67 mm (2.6 inches)	77%	high
July Weather	16°C (61°F)	87 mm (3.4 inches)	83%	high
August Weather	13°C (56°F)	87 mm (3.4 inches)	87%	moderate
September Weather	8°C (47°F)	62 mm (2.4 inches)	90%	moderate
October Weather	2°C (36°F)	82 mm (3.2 inches)	93%	low
November Weather	-3°C (26°F)	49 mm (1.9 inches)	94%	low
December Weather	-6°C (21°F)	62 mm (2.4 inches)	97%	low