Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
On the advent of September, New Orleans's average high-temperature exhibits a minor adjustment to a still tropical 86.5°F (30.3°C) from August's 89.4°F (31.9°C). During September, the nighttime temperature averages of 76.3°F (24.6°C).Heat index
September's mean heat index is appraised at a fiery hot 98.6°F (37°C). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.The standards for the heat index are set for locations in shade and under light breezes. The heat index can potentially augment by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'real feel' or 'feels like', melds the effects of warmth and moisture to generate a feeling of heat. Factors including metabolic differences, physical activity, and clothing are additional elements that influence the individual's temperature experience. Keep in mind that direct sunshine exposure can amplify the weather's effects, possibly increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Juveniles often do not understand the need to recuperate and rehydrate. Thirst is a delayed symptom of dehydration - hence, it is vital to maintain hydration, particularly during ongoing physical activities.
The body's natural response to excessive warmth is perspiration, as it allows for cooling through sweat evaporation. In the presence of high relative humidity, the evaporation rate diminishes, resulting in the body retaining more warmth compared to dry conditions. When body heat isn't effectively managed, risks of dehydration and overheating amplify.
Humidity
In New Orleans, the average relative humidity in September is 73%.Rainfall
In New Orleans, in September, during 11.7 rainfall days, 0.47" (12mm) of precipitation is typically accumulated. Throughout the year, there are 112.1 rainfall days, and 9.37" (238mm) of precipitation is accumulated.Snowfall
February through December are months without snowfall in New Orleans, Louisiana.Daylight
The average length of the day in September in New Orleans is 12h and 20min.On the first day of the month, sunrise is at 6:37 am and sunset at 7:22 pm. On the last day of September, in New Orleans, sunrise is at 6:53 am and sunset at 6:46 pm CDT.
Sunshine
The average sunshine in September in New Orleans, Louisiana, is 10.1h.UV index
The months with the highest UV index in New Orleans are May through September, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for the average person.Note: In September, the maximum UV index of 7 transforms into these recommendations:
Fend off overexposure. Sun protection is vital. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes.
Frequently asked questions
How hot is September in New Orleans?
What is the average humidity in September in New Orleans?
How many days does it rain in September in New Orleans?
When it does not snow in New Orleans?
How many hours of daylight does New Orleans have in September?
What time are sunrise and sunset in September in New Orleans?
How long on average sun shines in September in New Orleans?
What are the months with the highest UV index in New Orleans?
What is the UV index reading in September in New Orleans?
Average temperature in September
New Orleans, LA
- Average high temperature in September: 86.5°F
The warmest months (with the highest average high temperature) are July and August (89.4°F).
The month with the lowest average high temperature is January (60.4°F).
- Average low temperature in September: 76.3°F
The month with the highest average low temperature is August (79.5°F).
The coldest month (with the lowest average low temperature) is January (48.6°F).
Average pressure in September
New Orleans, LA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.97"Hg).
Average wind speed in September
New Orleans, LA
- Average wind speed in September: 7.1mph
The windiest months (with the highest average wind speed) are February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity in September
New Orleans, LA
- Average humidity in September: 73%
The months with the highest relative humidity are February and December (77%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
New Orleans, LA
- Average rainfall in September: 0.47"
The wettest month (with the highest rainfall) is July (1.57").
The driest months (with the least rainfall) are March and April (0.43").
Average rainfall days in September
New Orleans, LA
- Average rainfall days in September: 11.7 days
The month with the highest number of rainy days is August (17.2 days).
The month with the least rainy days is November (4.7 days).
Average snowfall days in September
New Orleans, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October, November and December (0 days).
Average daylight in September /
Average sunshine in September
New Orleans, LA
- Average daylight in September: 12h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in September: 10h and 1min
The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in September
New Orleans, LA
- Average sunshine days in September: 12.5 days
The month with the most sunshine days is November (23.5 days).
The month with the least sunshine days is August (8.9 days).
Average UV index in September
New Orleans, LA
- Average UV index in September: 7
The months with the highest UV index are May, June, July, August and September (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover in September
New Orleans, LA
- Average cloud cover in September: 25
The month with the most cloud cover is December (Cloud cover 44).
The month with the least cloud cover is October (Cloud cover 24).
Average visibility in September
New Orleans, LA
- Average visibility in September: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
New Orleans, Louisiana, USA
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