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September Weather in Horn, Sweden

Last updated: August 27, 2025

In Horn, Sweden, the average temperature in September hovers around 13°C (55°F), with fluctuations ranging from a chilly 2°C (36°F) to a warm 24°C (75°F). Expect around 68 mm (2.7 in) of precipitation spread over 11 days, contributing to a cozy 81% average humidity. Whether you're exploring or relaxing, be prepared for a mix of weather!

September Temperature in Horn

In September in Horn, the average temperature is 13°C (55°F). The maximum can reach 24°C (75°F), and the minimum can be as low as 2°C (36°F). Packing layers would be ideal for travelers, as you can experience both warm and cool temperatures throughout the day.

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

The chart illustrates September temperature patterns in Horn, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Horn, September typically has an average temperature of 13°C (55°F), with highs reaching up to 24°C (75°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec323135415161636155474034
Data source: Temperature data for Horn generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Horn

In Horn in September, the total precipitation amount is 68 mm (2.7 in) spread over a duration of 11 days.

September Precipitation Trends in Horn

The chart displays monthly precipitation patterns in Horn, 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 Horn, September typically receives around 68 mm (2.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec384146315555697968664650
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Horn

In Horn in September, humidity is 81%. With an average temperature of 13°C (55°F), this humidity feels like a damp blanket wrapping around you, making strolls outdoors feel heavy and slightly oppressive, which may be less than ideal for travelers looking to explore comfortably.

September Average Humidity in Horn

This chart illustrates the average monthly humidity levels in Horn, 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 Horn is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%89%88%82%72%68%68%73%81%87%89%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Horn

In Horn 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 Horn for better planning.

Maximum UV Index Levels in Horn for September

The chart shows the monthly maximum UV Index (UVI) for Horn 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 Horn typically reaches 4, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123457764211
Data source: Horn 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 Horn Compares to Other Months

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

This table compares monthly weather conditions in Horn, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)38 mm (1.5 inches)90%low
February Weather0°C (32°F)41 mm (1.6 inches)89%low
March Weather2°C (35°F)46 mm (1.8 inches)88%moderate
April Weather5°C (42°F)31 mm (1.2 inches)82%moderate
May Weather10°C (51°F)55 mm (2.2 inches)72%moderate
June Weather16°C (62°F)55 mm (2.2 inches)68%high
July Weather17°C (63°F)69 mm (2.7 inches)68%high
August Weather16°C (62°F)79 mm (3.1 inches)73%high
September Weather13°C (55°F)68 mm (2.7 inches)81%moderate
October Weather8°C (47°F)66 mm (2.6 inches)87%low
November Weather4°C (40°F)46 mm (1.8 inches)89%low
December Weather1°C (34°F)50 mm (2.0 inches)88%low

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