September weather forecast
Port Vincent, LA

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Weather in September

September, the first month of the autumn in Port Vincent, is still a hot month, with an average temperature varying between 70.5°F (21.4°C) and 87.4°F (30.8°C).

Temperature

Port Vincent experiences a subtle adjustment in high-temperatures to a still tropical 87.4°F (30.8°C) with the onset of September, maintaining near parity with August's 90.7°F (32.6°C). An average low-temperature of 70.5°F (21.4°C) is expected during September.

Heat index

In September, the average heat index is appraised at a scorching 104°F (40°C). Heightened safety actions are necessary, heat cramps and heat exhaustion are probable. Persistent activity may lead to heatstroke.
Bear in mind that the heat index values are determined for shaded areas and light breezes. The heat index has the potential to rise by 15 Fahrenheit (8 Celsius) degrees with direct sunshine exposure.
Note: The heat index, also known as 'apparent temperature' or 'real feel', gives an indication of how one might feel in terms of heat after considering humidity. An individual's temperature experience can be influenced by extra factors, including metabolic differences, activity levels, and clothing. Direct sun exposure is noteworthy in its ability to escalate the felt temperature, potentially adding 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are highly important for children. 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.
Perspiration, which is the evaporation of sweat, is a primary way the human body manages and dispels excessive warmth. With higher relative humidity, the rate of evaporation is reduced, resulting in increased heat retention in the body compared to drier air. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

In Port Vincent, Louisiana, the average relative humidity in September is 79%.

Rainfall

In Port Vincent, in September, it is raining for 14.9 days, with typically 1.18" (30mm) of accumulated precipitation. In Port Vincent, Louisiana, during the entire year, the rain falls for 151.5 days and collects up to 18.62" (473mm) of precipitation.

Snowfall

In Port Vincent, snow does not fall in February through December.

Daylight

In September, the average length of the day in Port Vincent is 12h and 20min.
On the first day of the month, sunrise is at 6:40 am and sunset at 7:25 pm. On the last day of September, in Port Vincent, sunrise is at 6:56 am and sunset at 6:49 pm CDT.

Sunshine

In September, the average sunshine is 9.9h.

UV index

In Port Vincent, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: A daily high UV index of 6 in September leads to these guidelines:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
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Frequently asked questions

Is it hot in Port Vincent during September?

September temperatures in Port Vincent vary between a high-temperature of 87.4°F (30.8°C) and a low-temperature of 70.5°F (21.4°C). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, is appraised at 104°F (40°C).

What is the average humidity in September in Port Vincent?

In September, the average relative humidity is 79%.

How much does it rain in Port Vincent in September?

In September, in Port Vincent, the rain falls for 14.9 days. Throughout September, 1.18" (30mm) of precipitation is accumulated.

When it does not snow in Port Vincent?

February through December are months without snowfall in Port Vincent.

How many hours of daylight does Port Vincent have in September?

In September, the average day length in Port Vincent is 12h and 20min.

What time are sunrise and sunset in September in Port Vincent?

In September, on the first day of the month, sunrise is at 6:40 am and sunset at 7:25 pm. On the last day of the month, in Port Vincent, sunrise is at 6:56 am and sunset at 6:49 pm CDT.

How long on average sun shines in September in Port Vincent?

In Port Vincent, the average sunshine duration in September is 9.9h.

What is the UV index intensity in September in Port Vincent?

The average daily maximum UV index in September is 6. A UV Index reading of 6 to 7 represents a high health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in September
Port Vincent, LA

Average temperature in September - Port Vincent, LA
  • Average high temperature in September: 87.4°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (59.2°F).

  • Average low temperature in September: 70.5°F

The month with the highest average low temperature is August (74.8°F).
The coldest month (with the lowest average low temperature) is January (43.5°F).

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Average pressure in September
Port Vincent, LA

Average pressure in September - Port Vincent, LA
  • Average pressure in September: 29.97"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

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Average wind speed in September
Port Vincent, LA

Average wind speed in September - Port Vincent, LA
  • Average wind speed in September: 4.9mph

The windiest months (with the highest average wind speed) are February and April (7.1mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

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Average humidity in September
Port Vincent, LA

Average humidity in September - Port Vincent, LA
  • Average humidity in September: 79%

The months with the highest relative humidity are February and December (81%).
The month with the lowest relative humidity is October (74%).

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Average rainfall in September
Port Vincent, LA

Average rainfall in September - Port Vincent, LA
  • Average rainfall in September: 1.18"

The wettest month (with the highest rainfall) is July (3.03").
The driest months (with the least rainfall) are March and November (0.98").

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Average rainfall days in September
Port Vincent, LA

Average rainfall days in September - Port Vincent, LA
  • Average rainfall days in September: 14.9 days

The month with the highest number of rainy days is July (18.9 days).
The month with the least rainy days is November (7.9 days).

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Average snowfall in September
Port Vincent, LA

Average snowfall in September - Port Vincent, LA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.04").
The months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in September
Port Vincent, LA

Average snowfall days in September - Port Vincent, 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).

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Average daylight in September /
Average sunshine in September
Port Vincent, LA

Average daylight in September / Average sunshine in September - Port Vincent, LA
  • Average daylight in September: 12h and 2min

The month with the longest days is June (Average daylight: 14h and 6min).
The month with the shortest days is December (Average daylight: 10h and 12min).

  • Average sunshine in September: 9h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days in September
Port Vincent, LA

Average sunshine days in September - Port Vincent, LA
  • Average sunshine days in September: 12.9 days

The month with the most sunshine days is November (20.4 days).
The month with the least sunshine days is August (9.3 days).

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Average UV index in September
Port Vincent, LA

Average UV index in September - Port Vincent, LA
  • Average UV index in September: 6

The months with the highest UV index are May, June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

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Average cloud cover in September
Port Vincent, LA

Average cloud cover in September - Port Vincent, LA
  • Average cloud cover in September: 29

The month with the most cloud cover is December (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 26).

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Average visibility in September
Port Vincent, LA

Average visibility in September - Port Vincent, LA
  • Average visibility in September: 5mi

The months with the highest visibility are January, February, June, July, August, October, November and December (6mi).
The months with the lowest visibility are March, April, May and September (5mi).

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Port Vincent, Louisiana, USA

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