September weather forecast
Galliano, LA

The first month of the autumn, September, is still a tropical month in Galliano, Louisiana, with an average temperature varying between 75.6°F (24.2°C) and 86.4°F (30.2°C).

Temperature

September registers an average high-temperature of a still hot 86.4°F (30.2°C), slightly varied from August's 89.1°F (31.7°C). Throughout September, Galliano records an average temperature of 75.6°F (24.2°C) at night.

Heat index

The average heat index in September is estimated at a torrid 98.6°F (37°C). Exercise heightened safety, heat cramps and heat exhaustion are probable. Persistent activity may provoke heatstroke.
Understanding the heat index involves considering values for shaded locales with light wind. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', is a fusion of air temperature and moisture levels to demonstrate the sensation of heat. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Direct sunlight can potentially raise the heat index by 15 Fahrenheit (8 Celsius) degrees, so it's crucial to consider. Heat index values are largely significant for babies and toddlers. Young kids are often more at risk than adults as they tend to perspire less. Besides, their skin surface is larger relative to their small bodies, and their increased heat output from their active lifestyle compounds their risk.
When it comes to cooling down, the human body's primary method is through perspiration, making use of sweat evaporation to eliminate excess heat. An increase in relative humidity hinders the body's normal cooling function by reducing evaporation, thereby decreasing the rate of body cooling and enhancing the sense of warmth. Overheating and potential dehydration arise when body heat gain eclipses its release capability.

Humidity

The average relative humidity in September in Galliano is 75%.

Rainfall

In September, the rain falls for 15.5 days. Throughout September, 1.3" (33mm) of precipitation is accumulated. Throughout the year, there are 139.9 rainfall days, and 16.38" (416mm) of precipitation is accumulated.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of September, sunrise is at 6:39 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:54 am and sunset at 6:47 pm CDT.

Sunshine

The average sunshine in September is 10.1h.

UV index

The months with the highest UV index in Galliano are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 7 during September translates into the following guidance:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Avoid direct sunlight between the hours of 10 a.m. and 4 p.m., when UV radiation is at its peak. Keep in mind that shade structures may not provide complete protection. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat.