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September Weather in Hammerdal, Sweden

Last updated: August 27, 2025

In Hammerdal, Sweden, the average temperature for September hovers around 9°C (48°F), with minimum temperatures dropping to -1°C (30°F) and maximums reaching up to 23°C (73°F). During this month, expect 83 mm (3.3 in) of precipitation spread over about 14 days, contributing to a notably high average humidity of 89%.

September Temperature in Hammerdal

In September in Hammerdal, the average temperature is 9°C (48°F), with maximums reaching 23°C (73°F) and minimums dropping as low as -1°C (30°F). This makes it a great time for travelers to experience mild weather while packing for both warm and chilly conditions.

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

The chart illustrates September temperature patterns in Hammerdal, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hammerdal, September typically has an average temperature of 9°C (48°F), with highs reaching up to 23°C (73°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec212127354656605648393024
Data source: Temperature data for Hammerdal 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 Hammerdal

In Hammerdal in September, the precipitation amount is 83 mm (3.3 in) spread over a period of 14 days.

September Precipitation Trends in Hammerdal

The chart displays monthly precipitation patterns in Hammerdal, 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 Hammerdal, September typically receives around 83 mm (3.3 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec513644355571857483785065
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hammerdal

In Hammerdal in September humidity is 89%. With an average temperature of 9°C (48°F), this humidity feels like a chill that lingers in the air, wrapping around you like a damp blanket, making outdoor activities challenging and encouraging a cozy retreat indoors.

September Average Humidity in Hammerdal

This chart illustrates the average monthly humidity levels in Hammerdal, 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 Hammerdal 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 Hammerdal

In Hammerdal 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 Hammerdal, you can check the information here.

Maximum UV Index Levels in Hammerdal for September

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

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

This table compares monthly weather conditions in Hammerdal, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-6°C (22°F)51 mm (2.0 inches)97%low
February Weather-6°C (21°F)36 mm (1.4 inches)95%low
March Weather-3°C (27°F)44 mm (1.7 inches)92%moderate
April Weather2°C (36°F)35 mm (1.4 inches)86%moderate
May Weather8°C (46°F)55 mm (2.2 inches)80%moderate
June Weather14°C (57°F)71 mm (2.8 inches)76%high
July Weather15°C (60°F)85 mm (3.4 inches)80%high
August Weather13°C (56°F)74 mm (2.9 inches)86%moderate
September Weather9°C (48°F)83 mm (3.3 inches)89%moderate
October Weather4°C (39°F)78 mm (3.1 inches)93%low
November Weather-1°C (30°F)50 mm (2.0 inches)94%low
December Weather-4°C (25°F)65 mm (2.6 inches)96%low

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