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September Weather in Sassenage, France

Last updated: August 23, 2025

In September, the average temperature in Sassenage, France is a comfortable 14°C (58°F). Expect a minimum chill of -2°C (28°F) and a pleasant maximum of 27°C (81°F). With an average humidity of 73%, it's a month that feels quite fresh. Keep in mind, you'll encounter about 81 mm (3.2 in) of precipitation spread over 10 days, so a waterproof jacket might come in handy!

September Temperature in Sassenage

In September in Sassenage, the average temperature is 14°C (58°F). The maximum can reach 27°C (81°F), while the minimum can drop as low as -2°C (28°F). This means travelers should be prepared for a wide range of weather conditions, making layering a wise choice for their visit.

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

The chart illustrates September temperature patterns in Sassenage, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sassenage, September typically has an average temperature of 14°C (58°F), with highs reaching up to 27°C (81°F) and lows dropping to around -2°C (28°F).
JanFebMarAprMayJunJulAugSepOctNovDec313741465362656457493933
Data source: Temperature data for Sassenage 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 Sassenage

In Sassenage in September, the precipitation amount is 81 mm (3.2 in) over a span of 10 days.

September Precipitation Trends in Sassenage

The chart displays monthly precipitation patterns in Sassenage, 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 Sassenage, September typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec1181071348217414911010381120119229
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sassenage

In Sassenage in September, humidity is 73%. With an average temperature of 14°C (58°F), this humidity feels like a warm, damp blanket wrapping around you, making outdoor activities a bit uncomfortable for traveling unless you stay hydrated and take frequent breaks in the shade.

September Average Humidity in Sassenage

This chart illustrates the average monthly humidity levels in Sassenage, 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 Sassenage is approximately 73%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%87%84%83%78%75%72%63%73%89%91%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sassenage

In Sassenage 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 Sassenage.

Maximum UV Index Levels in Sassenage for September

The chart shows the monthly maximum UV Index (UVI) for Sassenage 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 Sassenage typically reaches 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24679101097532
Data source: Sassenage 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 Sassenage Compares to Other Months

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

This table compares monthly weather conditions in Sassenage, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-1°C (31°F)118 mm (4.6 inches)91%low
February Weather3°C (37°F)107 mm (4.2 inches)87%moderate
March Weather5°C (41°F)134 mm (5.3 inches)84%high
April Weather8°C (47°F)82 mm (3.2 inches)83%high
May Weather12°C (53°F)174 mm (6.9 inches)78%very high
June Weather17°C (62°F)149 mm (5.9 inches)75%very high
July Weather18°C (66°F)110 mm (4.3 inches)72%very high
August Weather18°C (65°F)103 mm (4.1 inches)63%very high
September Weather14°C (58°F)81 mm (3.2 inches)73%high
October Weather10°C (50°F)120 mm (4.7 inches)89%moderate
November Weather4°C (39°F)119 mm (4.7 inches)90%moderate
December Weather1°C (33°F)229 mm (9.0 inches)90%low

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