September Weather in Ostansjo, Sweden

Last updated: August 27, 2025

In September, the average temperature in Ostansjo, Sweden hovers around 7°C (45°F), with fluctuations ranging from a chilly -3°C (27°F) to a comfortable 20°C (69°F). During this month, expect approximately 78 mm (3.1 in) of precipitation spread across 13 days, contributing to an average humidity of 94%. Don't forget to pack your umbrella and warm layers!

September Temperature in Ostansjo

In September in Ostansjo, the average temperature is 7°C (45°F). Maximum temperatures can reach 20°C (69°F), while minimums can drop as low as -3°C (27°F). Be prepared for a mix of mild days and chilly nights when traveling during this time.

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

The chart illustrates September temperature patterns in Ostansjo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ostansjo, September typically has an average temperature of 7°C (45°F), with highs reaching up to 20°C (69°F) and lows dropping to around -3°C (27°F).

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

September Precipitation in Ostansjo

In Ostansjo in September, the precipitation amount is 78 mm (3.1 in) spread over 13 days.

September Precipitation Trends in Ostansjo

The chart displays monthly precipitation patterns in Ostansjo, 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 Ostansjo, September typically receives around 78 mm (3.1 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 Ostansjo

In Ostansjo in September, humidity is 94%. With an average temperature of 7°C (45°F), this humidity feels like a damp chill that clings to your skin, making outdoor activities less enjoyable and travel cumbersome as you navigate through the thick, heavy air.

September Average Humidity in Ostansjo

This chart illustrates the average monthly humidity levels in Ostansjo, 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 Ostansjo is approximately 94%, 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 Ostansjo

In Ostansjo 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 Ostansjo, you can check the information here.

Maximum UV Index Levels in Ostansjo for September

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

Data source: Ostansjo 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 Ostansjo Compares to Other Months

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

This table compares monthly weather conditions in Ostansjo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-10°C (15°F)	54 mm (2.1 inches)	100%	low
February Weather	-9°C (15°F)	40 mm (1.6 inches)	98%	low
March Weather	-5°C (23°F)	48 mm (1.9 inches)	95%	low
April Weather	0°C (31°F)	31 mm (1.2 inches)	91%	moderate
May Weather	5°C (41°F)	58 mm (2.3 inches)	85%	moderate
June Weather	12°C (53°F)	63 mm (2.5 inches)	79%	high
July Weather	14°C (58°F)	86 mm (3.4 inches)	84%	high
August Weather	12°C (54°F)	104 mm (4.1 inches)	91%	moderate
September Weather	7°C (45°F)	78 mm (3.1 inches)	94%	moderate
October Weather	2°C (35°F)	94 mm (3.7 inches)	96%	low
November Weather	-4°C (25°F)	66 mm (2.6 inches)	98%	low
December Weather	-7°C (20°F)	71 mm (2.8 inches)	100%	low