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September Weather in Montbartier, France

Last updated: August 23, 2025

In Montbartier, France, the average temperature in September hovers around 20°C (68°F). However, be prepared for a range of temperatures, with a minimum of 6°C (44°F) and a maximum soaring to 35°C (95°F). Expect about 51 mm (2.0 in) of precipitation spread over 8 days, and enjoy the cozy average humidity of 73% that adds to the atmosphere.

September Temperature in Montbartier

In September in Montbartier, the average temperature is a pleasant 20°C (68°F). Maximum temperatures can reach up to 35°C (95°F), while the minimum can dip as low as 6°C (44°F). Overall, it’s a great time to visit Montbartier, offering warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Montbartier, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Montbartier, September typically has an average temperature of 20°C (68°F), with highs reaching up to 35°C (95°F) and lows dropping to around 6°C (44°F).
JanFebMarAprMayJunJulAugSepOctNovDec424751566370747468594946
Data source: Temperature data for Montbartier 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 Montbartier

In Montbartier in September, the total precipitation amount is 51 mm (2.0 in), spread over a duration of 8 days.

September Precipitation Trends in Montbartier

The chart displays monthly precipitation patterns in Montbartier, 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 Montbartier, September typically receives around 51 mm (2.0 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec5057585586875257515971105
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Montbartier

In Montbartier 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 Montbartier

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

In Montbartier 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 Montbartier.

Maximum UV Index Levels in Montbartier for September

The chart shows the monthly maximum UV Index (UVI) for Montbartier 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 Montbartier typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24578101097532
Data source: Montbartier 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 Montbartier Compares to Other Months

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

This table compares monthly weather conditions in Montbartier, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)50 mm (2.0 inches)87%low
February Weather9°C (48°F)57 mm (2.3 inches)83%moderate
March Weather10°C (51°F)58 mm (2.3 inches)80%moderate
April Weather13°C (56°F)55 mm (2.2 inches)77%high
May Weather17°C (63°F)86 mm (3.4 inches)75%very high
June Weather21°C (70°F)87 mm (3.4 inches)74%very high
July Weather24°C (75°F)52 mm (2.1 inches)72%very high
August Weather23°C (74°F)57 mm (2.3 inches)70%very high
September Weather20°C (68°F)51 mm (2.0 inches)73%high
October Weather15°C (59°F)59 mm (2.3 inches)82%moderate
November Weather10°C (50°F)71 mm (2.8 inches)87%moderate
December Weather8°C (46°F)105 mm (4.1 inches)88%low

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