nomadseason

September Weather in Pontarlier, France

Last updated: August 23, 2025

In Pontarlier, France, the average temperature in September hovers around 15°C (59°F). During this time, temperatures can dip to a chilly 3°C (38°F) or soar to a warm 29°C (85°F). Expect 86 mm (3.4 in) of precipitation spread over about 12 days, contributing to an average humidity of 81%. Prepare for a mix of weather as you enjoy this vibrant destination!

September Temperature in Pontarlier

In September in Pontarlier, the average temperature is 15°C (59°F). Maximums can reach 29°C (85°F) and minimums can be as low as 3°C (38°F). Be prepared for a range of weather, making it a great time for layered clothing and outdoor activities.

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

The chart illustrates September temperature patterns in Pontarlier, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Pontarlier, September typically has an average temperature of 15°C (59°F), with highs reaching up to 29°C (85°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec333843495564666659514137
Data source: Temperature data for Pontarlier 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 Pontarlier

In Pontarlier in September, the precipitation amount is 86 mm (3.4 in) over a span of 12 days.

September Precipitation Trends in Pontarlier

The chart displays monthly precipitation patterns in Pontarlier, 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 Pontarlier, September typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec1421091477817516712511586117116207
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Pontarlier

In Pontarlier in September humidity is 81%. With an average temperature of 15°C (59°F), this humidity feels like a heavy blanket draped over you, making traveling quite uncomfortable as you constantly wipe away beads of sweat and feel the stickiness clinging to your clothes.

September Average Humidity in Pontarlier

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

In Pontarlier 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 Pontarlier, you can refer to this Hourly UV Index in Pontarlier.

Maximum UV Index Levels in Pontarlier for September

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

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

This table compares monthly weather conditions in Pontarlier, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather1°C (34°F)142 mm (5.6 inches)91%low
February Weather4°C (39°F)109 mm (4.3 inches)89%moderate
March Weather6°C (43°F)147 mm (5.8 inches)87%moderate
April Weather9°C (49°F)78 mm (3.1 inches)84%high
May Weather13°C (55°F)175 mm (6.9 inches)80%very high
June Weather18°C (64°F)167 mm (6.6 inches)82%very high
July Weather19°C (67°F)125 mm (4.9 inches)82%very high
August Weather19°C (66°F)115 mm (4.5 inches)77%very high
September Weather15°C (59°F)86 mm (3.4 inches)81%high
October Weather10°C (51°F)117 mm (4.6 inches)89%moderate
November Weather5°C (42°F)116 mm (4.6 inches)89%low
December Weather3°C (37°F)207 mm (8.2 inches)91%low

Compare Pontarlier's Climate with Cities Worldwide