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September Weather in Vi, Sweden

Last updated: August 27, 2025

In Vi, Sweden, the average temperature in September hovers around 11°C (51°F), with a minimum dipping to -1°C (30°F) and a pleasant maximum reaching 21°C (70°F). During this month, expect about 64 mm (2.5 in) of precipitation spread over 12 days, contributing to an average humidity of a high 89%.

September Temperature in Vi

In September in Vi, the average temperature is 11°C (51°F), with maximums reaching up to 21°C (70°F) and minimums dropping as low as -1°C (30°F). This variability makes it essential for travelers to pack layers to stay comfortable throughout the day.

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

The chart illustrates September temperature patterns in Vi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Vi, September typically has an average temperature of 11°C (51°F), with highs reaching up to 21°C (70°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec252530384758615951423328
Data source: Temperature data for Vi 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 Vi

In Vi in September, the total precipitation amount is 64 mm (2.5 in) over the course of 12 days.

September Precipitation Trends in Vi

The chart displays monthly precipitation patterns in Vi, 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 Vi, September typically receives around 64 mm (2.5 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec574645293653727464965180
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Vi

In Vi in September, humidity is 89%. With an average temperature of 11°C (51°F), this humidity feels like a heavy blanket wrapping around you, making every step feel sluggish and every breath a little more laborious, creating a challenging environment for travelers.

September Average Humidity in Vi

This chart illustrates the average monthly humidity levels in Vi, 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 Vi is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec97%95%92%87%80%76%80%86%89%93%94%96%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Vi

In Vi 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 Vi, you can check the information here.

Maximum UV Index Levels in Vi for September

The chart shows the monthly maximum UV Index (UVI) for Vi 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 Vi typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec113456653211
Data source: Vi 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 Vi Compares to Other Months

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

This table compares monthly weather conditions in Vi, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)57 mm (2.2 inches)97%low
February Weather-4°C (25°F)46 mm (1.8 inches)95%low
March Weather-1°C (31°F)45 mm (1.8 inches)92%moderate
April Weather3°C (38°F)29 mm (1.1 inches)86%moderate
May Weather8°C (47°F)36 mm (1.4 inches)80%moderate
June Weather14°C (58°F)53 mm (2.1 inches)76%high
July Weather16°C (62°F)72 mm (2.8 inches)80%high
August Weather15°C (59°F)74 mm (2.9 inches)86%moderate
September Weather11°C (51°F)64 mm (2.5 inches)89%moderate
October Weather6°C (42°F)96 mm (3.8 inches)93%low
November Weather1°C (34°F)51 mm (2.0 inches)94%low
December Weather-2°C (28°F)80 mm (3.2 inches)96%low

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