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September Weather in Vaennaesby, Sweden

Last updated: August 27, 2025

In September, the average temperature in Vaennaesby, Sweden hovers around 9°C (48°F). Expect chilly days with minimums dipping to -5°C (23°F), while the mercury can rise to a pleasant 21°C (70°F) at times. Be prepared for some rain, as 75 mm (3.0 in) of precipitation is expected over approximately 12 days, contributing to a high average humidity of 87%.

September Temperature in Vaennaesby

In September in Vaennaesby, the average temperature is 9°C (48°F). The maximum can reach 21°C (70°F), and the minimum can be as low as -5°C (23°F). Despite the chilly nights, this climate is perfect for travelers seeking crisp, fresh air and opportunities to explore the stunning winter landscapes.

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

The chart illustrates September temperature patterns in Vaennaesby, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vaennaesby, September typically has an average temperature of 9°C (48°F), with highs reaching up to 21°C (70°F) and lows dropping to around -5°C (23°F).
JanFebMarAprMayJunJulAugSepOctNovDec191927354658615748382823
Data source: Temperature data for Vaennaesby 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 Vaennaesby

In Vaennaesby in September, the precipitation amount is 75 mm (3.0 in) over the course of 12 days.

September Precipitation Trends in Vaennaesby

The chart displays monthly precipitation patterns in Vaennaesby, 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 Vaennaesby, September typically receives around 75 mm (3.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec5546442950658510075896084
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Vaennaesby

In Vaennaesby in September humidity is 87%. With an average temperature of 9°C (48°F), this humidity feels like a damp chill that seeps into your bones, making outdoor exploration uncomfortable and requiring extra layers and careful planning for any activities.

September Average Humidity in Vaennaesby

This chart illustrates the average monthly humidity levels in Vaennaesby, 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 Vaennaesby is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec95%94%91%85%80%75%80%84%87%92%92%94%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Vaennaesby

In Vaennaesby 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 Vaennaesby, you can check the information here.

Maximum UV Index Levels in Vaennaesby for September

The chart shows the monthly maximum UV Index (UVI) for Vaennaesby 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 Vaennaesby typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec112456653211
Data source: Vaennaesby 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 Vaennaesby Compares to Other Months

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

This table compares monthly weather conditions in Vaennaesby, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-7°C (19°F)54 mm (2.1 inches)95%low
February Weather-7°C (19°F)46 mm (1.8 inches)94%low
March Weather-3°C (27°F)44 mm (1.7 inches)91%low
April Weather2°C (35°F)29 mm (1.1 inches)85%moderate
May Weather8°C (47°F)50 mm (2.0 inches)79%moderate
June Weather14°C (58°F)65 mm (2.6 inches)75%high
July Weather16°C (62°F)84 mm (3.3 inches)80%high
August Weather14°C (57°F)100 mm (3.9 inches)84%moderate
September Weather9°C (48°F)75 mm (3.0 inches)87%moderate
October Weather3°C (38°F)89 mm (3.5 inches)92%low
November Weather-2°C (29°F)60 mm (2.4 inches)92%low
December Weather-5°C (24°F)84 mm (3.3 inches)94%low

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