September weather forecast
Bayou Crab, LA

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Weather in September

September, the first month of the autumn in Bayou Crab, is still a tropical month, with an average temperature ranging between min 70.9°F (21.6°C) and max 86.9°F (30.5°C).

Temperature

As Bayou Crab welcomes September, the average high-temperature records at a still tropical 86.9°F (30.5°C), marking an insignificant deviation from the prior month. In Bayou Crab, September is marked by an average low-temperature of 70.9°F (21.6°C).

Heat index

The heat index for September is appraised at a torrid 102.2°F (39°C). Incorporate additional preventive steps, heat exhaustion and heat cramps are possible. Long-lasting activity may cause heatstroke.
In reference to the heat index, it's for places in shade and with a slight wind. Direct sunlight exposure may result in a rise of the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'apparent temperature', provides an understanding of perceived warmth by combining temperature and relative 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. Remember, direct sunlight exposure can heighten the heat impact and might increase the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Young ones often underestimate the need for rest and rehydration. Thirst appears late in dehydration - hence, it is important to keep hydrated, particularly during prolonged physical activities.
The human body cools itself through perspiration, as excessive warmth is removed from the body through sweat evaporation. Relative humidity in excess curtails evaporation, therefore reducing heat dissipation from the body, leading to feelings of excess heat. Accumulating heat beyond the body's cooling measures leads to rising temperatures and potential ailments.

Humidity

The months with the highest humidity are February, July through September and December, with an average relative humidity of 80%.

Rainfall

In Bayou Crab, in September, during 17.5 rainfall days, 2.36" (60mm) of precipitation is typically accumulated. Throughout the year, there are 170.8 rainfall days, and 30.16" (766mm) of precipitation is accumulated.

Snowfall

In Bayou Crab, snow does not fall in February through November.

Daylight

The average length of the day in September is 12h and 20min.
On the first day of the month, sunrise is at 6:41 am and sunset at 7:26 pm. On the last day of September, in Bayou Crab, sunrise is at 6:57 am and sunset at 6:50 pm CDT.

Sunshine

In September, the average sunshine is 9.9h.

UV index

In September, the average daily maximum UV index is 6. A UV Index of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: The UV index of 6 during September translates into the following guidance:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. The Sun's UV radiation is at its strongest between the hours of 10 a.m. and 4 p.m. Minimize direct exposure to the sun during this period. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Updated: Jun 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How hot is it in September?

Bayou Crab in September has an average high-temperature of 86.9°F (30.5°C) and an average low-temperature of 70.9°F (21.6°C). In September, the average heat index (a.k.a. 'feels like', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is appraised at 102.2°F (39°C).

What is the most humid month?

February, July through September and December, with an average relative humidity of 80%, are most humid months.

What is the average humidity in September?

In Bayou Crab, the average relative humidity in September is 80%.

How many days does it rain in September?

In Bayou Crab, in September, during 17.5 rainfall days, 2.36" (60mm) of precipitation is typically accumulated.

When it does not snow?

In Bayou Crab, snow does not fall in February through November.

How many hours of daylight does Bayou Crab have in September?

In Bayou Crab, the average day length in September is 12h and 20min.

What time are sunrise and sunset in September?

In September, on the first day of the month, sunrise is at 6:41 am and sunset at 7:26 pm. On the last day of the month, sunrise is at 6:57 am and sunset at 6:50 pm CDT.

How many hours of sunshine does Bayou Crab have in September?

In September, the average sunshine duration is 9.9h.

What is the UV index reading in September?

The average daily maximum UV index in September is 6. A UV Index value of 6 to 7 symbolizes a high health threat from unsafe exposure to Sun's UV rays.
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
Bayou Crab, LA

Average temperature in September - Bayou Crab, LA
  • Average high temperature in September: 86.9°F

The warmest month (with the highest average high temperature) is July (90.1°F).
The month with the lowest average high temperature is January (60.1°F).

  • Average low temperature in September: 70.9°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 (44.8°F).

Average pressure in September
Bayou Crab, LA

Average pressure in September - Bayou Crab, 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 and August (29.96"Hg).

Average wind speed in September
Bayou Crab, LA

Average wind speed in September - Bayou Crab, LA
  • Average wind speed in September: 5.1mph

The windiest months (with the highest average wind speed) are February and April (7.5mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

Average humidity in September
Bayou Crab, LA

Average humidity in September - Bayou Crab, LA
  • Average humidity in September: 80%

The months with the highest relative humidity are February, July, August, September and December (80%).
The month with the lowest relative humidity is October (74%).

Average rainfall in September
Bayou Crab, LA

Average rainfall in September - Bayou Crab, LA
  • Average rainfall in September: 2.36"

The wettest month (with the highest rainfall) is July (4.76").
The driest month (with the least rainfall) is November (1.3").

Average rainfall days in September
Bayou Crab, LA

Average rainfall days in September - Bayou Crab, LA
  • Average rainfall days in September: 17.5 days

The month with the highest number of rainy days is July (22.3 days).
The month with the least rainy days is November (8.5 days).

Average snowfall in September
Bayou Crab, LA

Average snowfall in September - Bayou Crab, LA
  • Average snowfall in September: 0"

The month with the highest snowfall is January (0.16").
The months with the least snowfall are February, March, April, May, June, July, August, September, October and November (0").

Average snowfall days in September
Bayou Crab, LA

Average snowfall days in September - Bayou Crab, LA
  • Average snowfall days in September: 0 days

The months with the highest number of snowfall days are January and December (0.1 days).
The months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

Average daylight in September /
Average sunshine in September
Bayou Crab, LA

Average daylight in September / Average sunshine in September - Bayou Crab, 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: 9h and 5min

The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

Average sunshine days in September
Bayou Crab, LA

Average sunshine days in September - Bayou Crab, LA
  • Average sunshine days in September: 10.1 days

The month with the most sunshine days is November (20.2 days).
The months with the least sunshine days are July and August (6.4 days).

Average UV index in September
Bayou Crab, LA

Average UV index in September - Bayou Crab, LA
  • Average UV index in September: 6

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

Average cloud cover in September
Bayou Crab, LA

Average cloud cover in September - Bayou Crab, 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).

Average visibility in September
Bayou Crab, LA

Average visibility in September - Bayou Crab, LA
  • Average visibility in September: 5mi

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

Bayou Crab, Louisiana, USA

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