September Weather in Isle of Normandy, United States

Last updated: June 24, 2025

In September, the average temperature in Isle of Normandy, United States is a warm 28°C (82°F), providing a delightful climate for outdoor activities. Expect a minimum of 24°C (75°F) and a high of 33°C (91°F), with average humidity at 76%, making the air feel pleasantly warm. However, be prepared for some rain, as precipitation averages 203 mm (8.0 in) over 22 days. So pack your umbrellas, but don't forget to enjoy the sunshine!

September Temperature in Isle of Normandy

In September in Isle of Normandy, the average temperature is 28°C (82°F), with maximums reaching up to 33°C (91°F) and minimums dipping as low as 24°C (75°F). This warm weather makes it an ideal time for travelers seeking a sunny getaway.

September Weather in Isle of Normandy: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Isle of Normandy, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Isle of Normandy, September typically has an average temperature of 28°C (82°F), with highs reaching up to 33°C (91°F) and lows dropping to around 24°C (75°F).

Data source: Temperature data for Isle of Normandy generated using information from the Copernicus Climate Change Service.

September Precipitation in Isle of Normandy

In Isle of Normandy in September, the total precipitation amount is 203 mm (8.0 in) spread over 22 days.

September Precipitation Trends in Isle of Normandy

The chart displays monthly precipitation patterns in Isle of Normandy, 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 Isle of Normandy, September typically receives around 203 mm (8.0 inches) of precipitation spread over approximately 22 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Isle of Normandy

In Isle of Normandy in September humidity is 76%. With an average temperature of 28°C (82°F), this humidity feels like a warm blanket enveloping you, making travel feel sticky and sluggish as you navigate through the heat, leaving you constantly seeking shade and refreshing beverages.

September Average Humidity in Isle of Normandy

This chart illustrates the average monthly humidity levels in Isle of Normandy, 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 Isle of Normandy is approximately 76%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Isle of Normandy

In Isle of Normandy in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Isle of Normandy.

Maximum UV Index Levels in Isle of Normandy for September

The chart shows the monthly maximum UV Index (UVI) for Isle of Normandy 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 Isle of Normandy typically reaches 11, which falls under the extreme exposure category.

Data source: Isle of Normandy 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 Isle of Normandy Compares to Other Months

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

This table compares monthly weather conditions in Isle of Normandy, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	21°C (70°F)	34 mm (1.3 inches)	81%	high
February Weather	23°C (73°F)	50 mm (2.0 inches)	79%	very high
March Weather	23°C (73°F)	30 mm (1.2 inches)	76%	very high
April Weather	25°C (77°F)	63 mm (2.5 inches)	73%	extreme
May Weather	26°C (79°F)	161 mm (6.3 inches)	71%	extreme
June Weather	28°C (82°F)	172 mm (6.8 inches)	69%	extreme
July Weather	28°C (83°F)	173 mm (6.8 inches)	70%	extreme
August Weather	28°C (83°F)	181 mm (7.1 inches)	72%	extreme
September Weather	28°C (82°F)	203 mm (8.0 inches)	76%	extreme
October Weather	27°C (81°F)	157 mm (6.2 inches)	79%	very high
November Weather	24°C (76°F)	93 mm (3.7 inches)	80%	very high
December Weather	22°C (72°F)	41 mm (1.6 inches)	81%	high