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September Weather in Dunes, France

Last updated: August 23, 2025

In Dunes, France, the average temperature in September hovers around 20°C (68°F). Expect a range of 6°C (43°F) as the minimum, soaring up to 36°C (97°F) at its peak. With an average precipitation of 50 mm (2.0 in) spread over 7 days, you'll also experience a fairly high humidity level of 73%.

September Temperature in Dunes

In September in Dunes, the average temperature is 20°C (68°F). The maximum can reach 36°C (97°F) and the minimum can be as low as 6°C (43°F). This pleasant climate makes Dunes an ideal destination for travelers seeking both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Dunes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dunes, September typically has an average temperature of 20°C (68°F), with highs reaching up to 36°C (97°F) and lows dropping to around 6°C (43°F).
JanFebMarAprMayJunJulAugSepOctNovDec424751566370747468594946
Data source: Temperature data for Dunes 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 Dunes

In Dunes in September, the precipitation amount is 50 mm (2.0 in) over a span of 7 days.

September Precipitation Trends in Dunes

The chart displays monthly precipitation patterns in Dunes, 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 Dunes, September typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec5158635990874750506368105
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Dunes

In Dunes in September, humidity is 73%. With an average temperature of 20°C (68°F), this humidity feels like a warm embrace, making outdoor activities somewhat sticky, yet the atmosphere remains pleasant for leisurely strolls and sightseeing.

September Average Humidity in Dunes

This chart illustrates the average monthly humidity levels in Dunes, 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 Dunes is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%83%80%77%75%74%72%70%73%82%87%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Dunes

In Dunes in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Dunes.

Maximum UV Index Levels in Dunes for September

The chart shows the monthly maximum UV Index (UVI) for Dunes 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 Dunes typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec23578101097532
Data source: Dunes 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 Dunes Compares to Other Months

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

This table compares monthly weather conditions in Dunes, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)51 mm (2.0 inches)87%low
February Weather9°C (48°F)58 mm (2.3 inches)83%moderate
March Weather10°C (51°F)63 mm (2.5 inches)80%moderate
April Weather13°C (56°F)59 mm (2.3 inches)77%high
May Weather17°C (63°F)90 mm (3.5 inches)75%very high
June Weather21°C (70°F)86 mm (3.4 inches)74%very high
July Weather24°C (75°F)47 mm (1.8 inches)72%very high
August Weather23°C (74°F)50 mm (2.0 inches)70%very high
September Weather20°C (68°F)50 mm (2.0 inches)73%high
October Weather15°C (59°F)63 mm (2.5 inches)82%moderate
November Weather10°C (50°F)68 mm (2.7 inches)87%moderate
December Weather8°C (46°F)105 mm (4.1 inches)88%low

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