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
The advent of September brings an average high-temperature of a still tropical 86.5°F (30.3°C), exhibiting minor difference from the previous month. Jean Lafitte records an average nighttime low of 75.4°F (24.1°C) in September.Heat index
During September, the heat index is estimated at a very hot 98.6°F (37°C). Adopt extra safety steps, risk of heat exhaustion and heat cramps is notable. Sustained activity might cause heatstroke.It is essential to grasp that the heat index's numbers are for shade and light wind settings. The presence of direct sunlight can raise the heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', combines air temperature and relative humidity to represent a human perceived temperature equivalent. The influence of weather is personal, with varied individuals experiencing it differently due to differences in body mass, stature, and physical exertion levels. One should be aware that direct sunshine can amplify the perceived temperature, raising the heat index by as much as 15 Fahrenheit (8 Celsius) degrees. Heat index values are highly critical to babies and toddlers. Typically, children face more danger than adults as they usually perspire less. Their larger skin surface relative to their small bodies and increased heat output from their activities enhance their risk.
To offset high temperatures, the human body releases sweat which, upon evaporation, cools it down. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.
Humidity
In September, the average relative humidity in Jean Lafitte is 74%.Rainfall
In Jean Lafitte, during September, the rain falls for 15.7 days and regularly aggregates up to 1.1" (28mm) of precipitation. In Jean Lafitte, during the entire year, the rain falls for 137.6 days and collects up to 14.84" (377mm) of precipitation.Snowfall
February through December are months without snowfall.Daylight
In September, the average length of the day in Jean Lafitte is 12h and 20min.On the first day of September in Jean Lafitte, sunrise is at 6:38 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 6:53 am and sunset at 6:46 pm CDT.
Sunshine
In September, the average sunshine is 10.3h.UV index
The months with the highest UV index in Jean Lafitte, Louisiana, are May through September, with an average maximum UV index of 7. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A maximum high UV index of 7 in September translates into the following recommendations:
Dodge overexposure. Fair-skinned people can get singed in less than 20 minutes. The Sun's UV radiation is most intense from 10 a.m. to 4 p.m. Try to avoid direct sun exposure during these hours. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Frequently asked questions
How hot does it get in Jean Lafitte in September?
What is the average humidity in September in Jean Lafitte?
How many days does it rain in September in Jean Lafitte?
When it does not snow in Jean Lafitte?
What is the average length of the day in September in Jean Lafitte?
When are sunrise and sunset in September in Jean Lafitte?
How many hours of sunshine does Jean Lafitte have in September?
What is the month with the highest UV index in Jean Lafitte?
What is the UV index intensity in September in Jean Lafitte?
Average temperature in September
Jean Lafitte, LA
- Average high temperature in September: 86.5°F
The warmest month (with the highest average high temperature) is July (89.4°F).
The month with the lowest average high temperature is January (60.6°F).
- Average low temperature in September: 75.4°F
The month with the highest average low temperature is August (78.4°F).
The coldest month (with the lowest average low temperature) is January (48.6°F).
Average pressure in September
Jean Lafitte, 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
Jean Lafitte, LA
- Average wind speed in September: 6.6mph
The windiest months (with the highest average wind speed) are February and April (9.3mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity in September
Jean Lafitte, LA
- Average humidity in September: 74%
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
Jean Lafitte, LA
- Average rainfall in September: 1.1"
The wettest month (with the highest rainfall) is July (2.72").
The driest month (with the least rainfall) is January (0.63").
Average rainfall days in September
Jean Lafitte, LA
- Average rainfall days in September: 15.7 days
The month with the highest number of rainy days is August (20 days).
The month with the least rainy days is November (5.8 days).
Average snowfall days in September
Jean Lafitte, LA
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (0.2 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
Jean Lafitte, 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 2min
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 18min).
Average sunshine days in September
Jean Lafitte, LA
- Average sunshine days in September: 10.4 days
The month with the most sunshine days is November (22 days).
The month with the least sunshine days is August (7.8 days).
Average UV index in September
Jean Lafitte, 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
Jean Lafitte, LA
- Average cloud cover in September: 24
The month with the most cloud cover is December (Cloud cover 43).
The month with the least cloud cover is October (Cloud cover 23).
Average visibility in September
Jean Lafitte, 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).
Jean Lafitte, Louisiana, USA
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