September Weather in Galliano, United States

Last updated: June 24, 2025

In September, the average temperature in Galliano, United States hovers around 27°C (81°F), creating a pleasant climate for outdoor activities. Visitors can expect temperatures to range from a minimum of 17°C (63°F) to a maximum of 35°C (94°F). With approximately 174 mm (6.8 in) of precipitation spread over 18 days, it’s wise to pack an umbrella. The average humidity sits at a comfortable 79%, adding to the tropical feel of this vibrant destination.

September Temperature in Galliano

In September in Galliano, the average temperature is 27°C (81°F), with maximums reaching 35°C (94°F) and minimums dropping to as low as 17°C (63°F). This pleasant climate makes Galliano an ideal destination for travelers seeking warm weather and outdoor activities.

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

The chart illustrates September temperature patterns in Galliano, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Galliano, September typically has an average temperature of 27°C (81°F), with highs reaching up to 35°C (94°F) and lows dropping to around 17°C (63°F).

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

September Precipitation in Galliano

In Galliano in September, the precipitation amount is 174 mm (6.8 in) over a span of 18 days.

September Precipitation Trends in Galliano

The chart displays monthly precipitation patterns in Galliano, 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 Galliano, September typically receives around 174 mm (6.8 inches) of precipitation spread over approximately 18 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 Galliano

In Galliano in September, humidity is 79%. With an average temperature of 27°C (81°F), this humidity feels like a warm and sticky embrace, making travel both challenging and invigorating as the air clings to your skin, urging you to seek shade or a refreshing drink.

September Average Humidity in Galliano

This chart illustrates the average monthly humidity levels in Galliano, 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 Galliano is approximately 79%, 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 Galliano

In Galliano in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Galliano.

Maximum UV Index Levels in Galliano for September

The chart shows the monthly maximum UV Index (UVI) for Galliano 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 Galliano typically reaches 10, which falls under the very high exposure category.

Data source: Galliano 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 Galliano Compares to Other Months

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

This table compares monthly weather conditions in Galliano, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	89 mm (3.5 inches)	81%	moderate
February Weather	16°C (61°F)	87 mm (3.4 inches)	81%	very high
March Weather	19°C (66°F)	80 mm (3.2 inches)	79%	very high
April Weather	21°C (70°F)	105 mm (4.2 inches)	81%	extreme
May Weather	25°C (77°F)	134 mm (5.3 inches)	77%	extreme
June Weather	27°C (82°F)	213 mm (8.4 inches)	74%	extreme
July Weather	28°C (83°F)	250 mm (9.8 inches)	74%	extreme
August Weather	28°C (83°F)	280 mm (11.0 inches)	73%	extreme
September Weather	27°C (81°F)	174 mm (6.8 inches)	79%	very high
October Weather	24°C (75°F)	137 mm (5.4 inches)	77%	very high
November Weather	17°C (63°F)	56 mm (2.2 inches)	81%	high
December Weather	15°C (60°F)	97 mm (3.8 inches)	84%	moderate