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September Weather in Jarnac, France

Last updated: August 23, 2025

In Jarnac, France, the average temperature in September hovers around 19°C (66°F), with temperatures ranging from a brisk 5°C (42°F) to a sweltering 35°C (96°F). Expect some rain, as 48 mm (1.9 in) of precipitation typically falls over 8 days during this month, complemented by an average humidity of 76%.

September Temperature in Jarnac

In September, in Jarnac, the average temperature is 19°C (66°F). Maximum temperatures can reach 35°C (96°F), while minimums can drop as low as 5°C (42°F). Be prepared for a range of temperatures during your travels, so pack accordingly for both warm and cool conditions.

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

The chart illustrates September temperature patterns in Jarnac, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jarnac, September typically has an average temperature of 19°C (66°F), with highs reaching up to 35°C (96°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec434650556167717065584846
Data source: Temperature data for Jarnac 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 Jarnac

In Jarnac in September, the precipitation amount is 48 mm (1.9 in) over a span of 8 days.

September Precipitation Trends in Jarnac

The chart displays monthly precipitation patterns in Jarnac, 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 Jarnac, September typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec6668835491823929488485123
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Jarnac

In Jarnac in September, humidity is 76%. With an average temperature of 19°C (66°F), this humidity feels like a warm, thick blanket wrapping around you, making travel mildly uncomfortable and encouraging frequent breaks in shaded or air-conditioned areas.

September Average Humidity in Jarnac

This chart illustrates the average monthly humidity levels in Jarnac, 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 Jarnac is approximately 76%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%83%82%82%82%80%76%73%76%82%83%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Jarnac

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

Maximum UV Index Levels in Jarnac for September

The chart shows the monthly maximum UV Index (UVI) for Jarnac 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 Jarnac typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235789996532
Data source: Jarnac 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 Jarnac Compares to Other Months

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

This table compares monthly weather conditions in Jarnac, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)66 mm (2.6 inches)85%low
February Weather8°C (47°F)68 mm (2.7 inches)83%moderate
March Weather10°C (50°F)83 mm (3.3 inches)82%moderate
April Weather13°C (55°F)54 mm (2.1 inches)82%high
May Weather16°C (61°F)91 mm (3.6 inches)82%very high
June Weather20°C (68°F)82 mm (3.2 inches)80%very high
July Weather22°C (71°F)39 mm (1.5 inches)76%very high
August Weather21°C (70°F)29 mm (1.1 inches)73%very high
September Weather19°C (66°F)48 mm (1.9 inches)76%high
October Weather14°C (58°F)84 mm (3.3 inches)81%moderate
November Weather9°C (49°F)85 mm (3.3 inches)83%moderate
December Weather8°C (46°F)123 mm (4.9 inches)85%low

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