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September Weather in Sundby, Denmark

Last updated: August 23, 2025

In September, the average temperature in Sundby, Denmark is a pleasant 15°C (60°F). Prepare for a range where the minimum temperature can dip to 8°C (47°F), while the maximum can soar to 26°C (80°F). Rainfall is expected with an average precipitation of 61 mm (2.4 in) spread over 11 days, and you can expect a comfortable average humidity of 83%.

September Temperature in Sundby

In September in Sundby, the average temperature is 15°C (60°F). The maximum can reach 26°C (80°F), and the minimum can be as low as 8°C (47°F). This makes it an ideal time for travelers to enjoy mild weather and explore the beauty of Sundby.

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

The chart illustrates September temperature patterns in Sundby, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sundby, September typically has an average temperature of 15°C (60°F), with highs reaching up to 26°C (80°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec383840455463656660534640
Data source: Temperature data for Sundby 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 Sundby

In Sundby in September, the total precipitation amount is 61 mm (2.4 in) over the course of 11 days.

September Precipitation Trends in Sundby

The chart displays monthly precipitation patterns in Sundby, 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 Sundby, September typically receives around 61 mm (2.4 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec534861384656737961844863
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sundby

In Sundby in September humidity is 83%. With an average temperature of 15°C (60°F), this humidity feels like a damp blanket wrapping around you, making travel a bit uncomfortable and sticky, as the air clings to your skin and dampens your clothes.

September Average Humidity in Sundby

This chart illustrates the average monthly humidity levels in Sundby, 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 Sundby is approximately 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%89%88%85%80%77%77%77%84%87%89%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sundby

In Sundby 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 Sundby.

Maximum UV Index Levels in Sundby for September

The chart shows the monthly maximum UV Index (UVI) for Sundby 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 Sundby typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123568765321
Data source: Sundby 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 Sundby Compares to Other Months

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

This table compares monthly weather conditions in Sundby, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)53 mm (2.1 inches)90%low
February Weather3°C (38°F)48 mm (1.9 inches)89%low
March Weather4°C (40°F)61 mm (2.4 inches)88%moderate
April Weather7°C (46°F)38 mm (1.5 inches)85%moderate
May Weather12°C (54°F)46 mm (1.8 inches)80%high
June Weather17°C (63°F)56 mm (2.2 inches)77%very high
July Weather18°C (65°F)73 mm (2.9 inches)77%high
August Weather19°C (66°F)79 mm (3.1 inches)77%high
September Weather15°C (60°F)61 mm (2.4 inches)83%moderate
October Weather12°C (54°F)84 mm (3.3 inches)87%moderate
November Weather8°C (46°F)48 mm (1.9 inches)89%low
December Weather4°C (40°F)63 mm (2.5 inches)88%low

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