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 Sulphur experiences an average high-temperature of a warm 85.1°F (29.5°C) in September, subtly different from August's 87.6°F (30.9°C). Port Sulphur records a slight downturn in temperature to an average of 77.7°F (25.4°C) during September nights.Heat index
September's mean heat index is estimated at a very hot 95°F (35°C). Take more safety measures, heat exhaustion and heat cramps are potential outcomes. Persistent activity might lead to heatstroke.Be aware that heat index ratings are designed for shaded locations and minor breezes. Direct exposure to sunshine could lead to a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', unifies temperature and humidity readings to offer a comprehensive feel of warmth. One's perception of temperature can vary depending on physical activity and individual heat sensitivity, influenced by factors like wind, attire, and metabolic variations. Direct exposure to the sun's rays can enhance the felt temperature, increasing the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Kids are generally in more danger than adults because they perspire less. Their large skin surface area compared to their small bodies and the excessive heat due to their actions raises their risk.
The physiological response of the human body to excess warmth is to perspire, thereby cooling itself through sweat evaporation. When relative humidity is at high levels, the evaporation rate lessens, causing the body to keep more heat than it would in less humid conditions. If the body retains more heat than it can expel, the increasing temperature can lead to heat-related conditions.
Humidity
In Port Sulphur, the average relative humidity in September is 74%.Rainfall
In Port Sulphur, Louisiana, in September, during 14.7 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. Throughout the year, in Port Sulphur, Louisiana, there are 137.2 rainfall days, and 19.92" (506mm) of precipitation is accumulated.Snowfall
February through December are months without snowfall.Daylight
In September, the average length of the day is 12h and 20min.On the first day of the month, sunrise is at 6:36 am and sunset at 7:20 pm. On the last day of September, in Port Sulphur, sunrise is at 6:51 am and sunset at 6:45 pm CDT.
Sunshine
In September, the average sunshine in Port Sulphur is 10.2h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index in Port Sulphur. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unsafe exposure to UV radiation for the average person.Note: A daily maximum UV index of 7 in September translates into the following instructions:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. Between 10 a.m. and 4 p.m., the Sun's UV radiation is at its peak. Limit your exposure to direct sunlight during these hours. Loose clothes with a tight weave are optimal for safeguarding yourself against the Sun's rays.
Frequently asked questions
How hot is September in Port Sulphur?
What is the average humidity in September in Port Sulphur?
How much does it rain in Port Sulphur in September?
When it does not snow in Port Sulphur?
What is the average length of the day in September in Port Sulphur?
What time are sunrise and sunset in September in Port Sulphur?
How long on average sun shines in September in Port Sulphur?
What is the month with the highest UV index in Port Sulphur?
How high is the UV index in September in Port Sulphur?
Average temperature in September
Port Sulphur, LA
- Average high temperature in September: 85.1°F
The warmest month (with the highest average high temperature) is August (87.6°F).
The month with the lowest average high temperature is January (61.2°F).
- Average low temperature in September: 77.7°F
The month with the highest average low temperature is August (80.4°F).
The coldest month (with the lowest average low temperature) is January (51.6°F).
Average pressure in September
Port Sulphur, LA
- Average pressure in September: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are June, August and September (29.97"Hg).
Average wind speed in September
Port Sulphur, LA
- Average wind speed in September: 8.2mph
The windiest month (with the highest average wind speed) is January (11.3mph).
The calmest month (with the lowest average wind speed) is July (7.3mph).
Average humidity in September
Port Sulphur, LA
- Average humidity in September: 74%
The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is October (70%).
Average rainfall in September
Port Sulphur, LA
- Average rainfall in September: 1.77"
The wettest month (with the highest rainfall) is August (4.72").
The driest month (with the least rainfall) is April (0.79").
Average rainfall days in September
Port Sulphur, LA
- Average rainfall days in September: 14.7 days
The month with the highest number of rainy days is August (20.3 days).
The month with the least rainy days is November (7 days).
Average snowfall days in September
Port Sulphur, 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
Port Sulphur, 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 6min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in September
Port Sulphur, LA
- Average sunshine days in September: 11 days
The months with the most sunshine days are April and November (20.9 days).
The month with the least sunshine days is August (7.3 days).
Average UV index in September
Port Sulphur, 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 Sulphur, 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 May (Cloud cover 23).
Average visibility in September
Port Sulphur, 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 Sulphur, Louisiana, USA
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