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September Weather in Boras, Sweden

Last updated: August 27, 2025

In Boras, Sweden, the average temperature in September hovers around 12°C (54°F). Daily fluctuations can see temperatures dipping as low as -1°C (31°F) and rising to a pleasant 24°C (76°F). Expect about 103 mm (4.0 in) of precipitation spread over 14 days, contributing to an average humidity of 82%. Overall, it's a month of varied weather, perfect for those who appreciate a little bit of everything!

September Temperature in Boras

In September in Boras, the average temperature is 12°C (54°F). The maximum can reach 24°C (76°F), while the minimum can be as low as -1°C (31°F). Travelers should prepare for a wide range of weather conditions during this time.

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

The chart illustrates September temperature patterns in Boras, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Boras, September typically has an average temperature of 12°C (54°F), with highs reaching up to 24°C (76°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec323135425161626054463934
Data source: Temperature data for Boras 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 Boras

In Boras in September, the precipitation amount is 103 mm (4.0 in) over a span of 14 days.

September Precipitation Trends in Boras

The chart displays monthly precipitation patterns in Boras, 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 Boras, September typically receives around 103 mm (4.0 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec547669437484951241031006574
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Boras

In Boras in September humidity is 82%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and sweat-inducing, which can be quite uncomfortable for traveling.

September Average Humidity in Boras

This chart illustrates the average monthly humidity levels in Boras, 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 Boras is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%91%89%82%70%65%65%71%82%90%92%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Boras

In Boras in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Boras.

Maximum UV Index Levels in Boras for September

The chart shows the monthly maximum UV Index (UVI) for Boras 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 Boras typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123567765211
Data source: Boras 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 Boras Compares to Other Months

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

This table compares monthly weather conditions in Boras, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (32°F)54 mm (2.1 inches)92%low
February Weather0°C (31°F)76 mm (3.0 inches)91%low
March Weather2°C (35°F)69 mm (2.7 inches)89%moderate
April Weather6°C (42°F)43 mm (1.7 inches)82%moderate
May Weather11°C (51°F)74 mm (2.9 inches)70%high
June Weather16°C (61°F)84 mm (3.3 inches)65%high
July Weather16°C (62°F)95 mm (3.7 inches)65%high
August Weather15°C (60°F)124 mm (4.9 inches)71%high
September Weather12°C (54°F)103 mm (4.0 inches)82%moderate
October Weather8°C (46°F)99 mm (3.9 inches)90%low
November Weather4°C (39°F)65 mm (2.6 inches)92%low
December Weather1°C (34°F)74 mm (2.9 inches)91%low

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