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
Port Fourchon experiences a transition to a warm 84.6°F (29.2°C) in average high-temperatures with the arrival of September, not greatly differing from August's 86.9°F (30.5°C). Nights in September cool down, indicating a minor disparity from daytime highs with an average low-temperature of 78.8°F (26°C).Heat index
September's average heat index is calculated to be a hot 93.2°F (34°C). Preventive measures are required to mitigate the risk of heat cramps and heat exhaustion. Continuous activity may precipitate heatstroke.Understand that the heat index values take into account shaded locations and mild winds. When under direct sunshine, the heat index may be elevated by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', gives an indication of how one might feel in terms of heat after considering humidity. The influence of weather is personal, with a diverse population experiencing it differently due to differences in body mass, stature, and degree of activity. It is important to note that direct sunlight can intensify the weather impact, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values remain especially vital for babies and toddlers. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
Humidity
In September, the average relative humidity is 73%.Rainfall
In Port Fourchon, Louisiana, during September, the rain falls for 17.3 days and regularly aggregates up to 2.17" (55mm) of precipitation. Throughout the year, in Port Fourchon, Louisiana, there are 151.9 rainfall days, and 22.01" (559mm) of precipitation is accumulated.Snowfall
In Port Fourchon, snow does not fall in February through December.Daylight
In September, the average length of the day is 12h and 19min.On the first day of the month, sunrise is at 6:38 am and sunset at 7:22 pm. On the last day of September, sunrise is at 6:53 am and sunset at 6:47 pm CDT.
Sunshine
In September, the average sunshine in Port Fourchon is 10.2h.UV index
The months with the highest UV index in Port Fourchon are May through September, with an average maximum UV index of 7. A UV Index of 6 to 7 symbolizes a high health hazard from unprotected exposure to Sun's UV rays for the average person.Note: A maximum daily UV index of 7 during September morphs into the following directions:
Stick with precautions and abide by sun safety procedures. Evading sunburn is essential. Stay in the shade and avoid direct Sun exposure from 10 a.m. to 4 p.m., a period when UV radiation is particularly strong, noting that parasols or canopies may not offer total sun protection. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim.
Frequently asked questions
How hot is September in Port Fourchon?
What is the average humidity in September in Port Fourchon?
How many days does it rain in September in Port Fourchon?
When it does not snow in Port Fourchon?
What is the average length of the day in September in Port Fourchon?
When is the sunrise / sunset in September in Port Fourchon?
How many hours of sunshine does Port Fourchon have in September?
When is the highest UV index in Port Fourchon?
What is the UV index reading in September in Port Fourchon?
Average temperature in September
Port Fourchon, LA
- Average high temperature in September: 84.6°F
The warmest months (with the highest average high temperature) are July and August (86.9°F).
The month with the lowest average high temperature is January (61.7°F).
- Average low temperature in September: 78.8°F
The month with the highest average low temperature is August (81.3°F).
The coldest month (with the lowest average low temperature) is January (53.1°F).
Average pressure in September
Port Fourchon, LA
- Average pressure in September: 29.96"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).
Average wind speed in September
Port Fourchon, LA
- Average wind speed in September: 8.8mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in September
Port Fourchon, LA
- Average humidity in September: 73%
The months with the highest relative humidity are February and December (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in September
Port Fourchon, LA
- Average rainfall in September: 2.17"
The wettest month (with the highest rainfall) is August (4.72").
The driest months (with the least rainfall) are February and April (0.87").
Average rainfall days in September
Port Fourchon, LA
- Average rainfall days in September: 17.3 days
The month with the highest number of rainy days is August (20.7 days).
The month with the least rainy days is November (7.5 days).
Average snowfall days in September
Port Fourchon, 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
Port Fourchon, 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 24min).
Average sunshine days in September
Port Fourchon, LA
- Average sunshine days in September: 8.6 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is August (6.5 days).
Average UV index in September
Port Fourchon, 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 months with the lowest UV index are January and December (UV index 4).
Average cloud cover in September
Port Fourchon, LA
- Average cloud cover in September: 25
The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is May (Cloud cover 23).
Average visibility in September
Port Fourchon, 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).
Port Fourchon, Louisiana, USA
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