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September Weather in Grenaa, Denmark

Last updated: August 23, 2025

In September, the average temperature in Grenaa, Denmark is a pleasant 15°C (60°F). Expect the thermometer to dip to a minimum of 11°C (51°F) and rise to a comfortable maximum of 21°C (70°F). However, prepare for some wet days, as there's an average precipitation of 88 mm (3.5 in) spread over 13 days, with the humidity hovering around a steady 85%.

September Temperature in Grenaa

In September, in Grenaa, the average temperature is 15°C (60°F). The maximum can reach 21°C (70°F) and the minimum can be as low as 11°C (51°F). This mild climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

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

The chart illustrates September temperature patterns in Grenaa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Grenaa, September typically has an average temperature of 15°C (60°F), with highs reaching up to 21°C (70°F) and lows dropping to around 11°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec393739445261636459534741
Data source: Temperature data for Grenaa 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 Grenaa

In Grenaa in September, the precipitation amount is 88 mm (3.5 in) spread over 13 days.

September Precipitation Trends in Grenaa

The chart displays monthly precipitation patterns in Grenaa, 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 Grenaa, September typically receives around 88 mm (3.5 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec5854543461506384881046778
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Grenaa

In Grenaa in September, humidity is 85%. With an average temperature of 15°C (60°F), this humidity feels like a warm, sticky embrace, making outdoor activities somewhat uncomfortable for travelers who may find themselves constantly seeking shade and hydration.

September Average Humidity in Grenaa

This chart illustrates the average monthly humidity levels in Grenaa, 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 Grenaa is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%91%89%84%75%74%73%77%86%91%92%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Grenaa

In Grenaa 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 Grenaa.

Maximum UV Index Levels in Grenaa for September

The chart shows the monthly maximum UV Index (UVI) for Grenaa 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 Grenaa typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123567765311
Data source: Grenaa 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 Grenaa Compares to Other Months

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

This table compares monthly weather conditions in Grenaa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather4°C (39°F)58 mm (2.3 inches)92%low
February Weather3°C (38°F)54 mm (2.1 inches)91%low
March Weather4°C (39°F)54 mm (2.1 inches)89%moderate
April Weather7°C (44°F)34 mm (1.3 inches)84%moderate
May Weather11°C (52°F)60 mm (2.4 inches)75%high
June Weather16°C (61°F)50 mm (2.0 inches)73%high
July Weather17°C (64°F)63 mm (2.5 inches)73%high
August Weather18°C (64°F)84 mm (3.3 inches)77%high
September Weather15°C (60°F)88 mm (3.5 inches)85%moderate
October Weather12°C (54°F)104 mm (4.1 inches)91%moderate
November Weather8°C (47°F)67 mm (2.6 inches)92%low
December Weather5°C (41°F)78 mm (3.1 inches)91%low

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