nomadseason

September Weather in Arches, France

Last updated: August 23, 2025

In September, the average temperature in Arches, France hovers around 15°C (60°F), with a minimum of 3°C (38°F) and a maximum reaching up to 30°C (87°F). Expect about 66 mm (2.6 in) of precipitation over 9 days, contributing to an average humidity level of 81%.

September Temperature in Arches

In September in Arches, the average temperature is 15°C (60°F). The maximum can reach 30°C (87°F), while the minimum can drop as low as 3°C (38°F). It's a great time to visit Arches, as you can enjoy mild weather during the day and cooler evenings.

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

The chart illustrates September temperature patterns in Arches, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arches, September typically has an average temperature of 15°C (60°F), with highs reaching up to 30°C (87°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec353944505665686760524238
Data source: Temperature data for Arches generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Arches

In Arches in September, the precipitation amount is 66 mm (2.6 in) over the course of 9 days.

September Precipitation Trends in Arches

The chart displays monthly precipitation patterns in Arches, 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 Arches, September typically receives around 66 mm (2.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec1441221365612597735966103107203
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Arches

In Arches in September, humidity is 81%. With an average temperature of 15°C (60°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sluggish and draining, which can challenge even the best-prepared traveler.

September Average Humidity in Arches

This chart illustrates the average monthly humidity levels in Arches, 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 Arches is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%87%84%80%82%82%77%81%89%89%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Arches

In Arches in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Arches, you can refer to this Hourly UV Index in Arches.

Maximum UV Index Levels in Arches for September

The chart shows the monthly maximum UV Index (UVI) for Arches 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 Arches typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689986421
Data source: Arches 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 Arches Compares to Other Months

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

This table compares monthly weather conditions in Arches, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather2°C (35°F)144 mm (5.7 inches)91%low
February Weather4°C (40°F)122 mm (4.8 inches)89%moderate
March Weather6°C (44°F)136 mm (5.4 inches)87%moderate
April Weather10°C (50°F)56 mm (2.2 inches)84%high
May Weather13°C (56°F)125 mm (4.9 inches)80%very high
June Weather18°C (65°F)97 mm (3.8 inches)82%very high
July Weather20°C (68°F)73 mm (2.9 inches)82%very high
August Weather19°C (67°F)59 mm (2.3 inches)77%very high
September Weather15°C (60°F)66 mm (2.6 inches)81%high
October Weather11°C (52°F)103 mm (4.0 inches)89%moderate
November Weather6°C (42°F)107 mm (4.2 inches)89%low
December Weather3°C (38°F)203 mm (8.0 inches)91%low

Compare Arches's Climate with Cities Worldwide