August weather forecast
Mermentau, LA

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Weather in August

The last month of the summer, August, is another tropical month in Mermentau, Louisiana, with an average temperature ranging between max 90°F (32.2°C) and min 75.2°F (24°C).

Temperature

Mermentau's August weather, with an average high temperature of 90°F (32.2°C) and an average low temperature of 75.2°F (24°C), tends to be the warmest of the year.

Heat index

For most parts of August, the heat index is computed to be a life-threatening hot 113°F (45°C). Take note: Heat exhaustion and heat cramps are expected. Heatstroke can occur with prolonged effort.
Bear in mind that the heat index values are determined for shaded areas and light breezes. Exposure to unobstructed sunshine could lead to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature' or 'apparent temperature', blends air temperature and moisture content to represent the felt temperature to humans. The individual's experience of temperature can be shaped by numerous aspects such as metabolic variations, physical exertion, and attire. Given direct exposure to sunlight, one might experience a rise in the heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are largely significant for babies and toddlers. Young ones are generally at greater risk than adults due to their limited sweating ability. In addition, their large skin surface relative to their small bodies and higher heat production from their activities add to their vulnerability.
Evaporating sweat, thanks to perspiration, acts as a natural air conditioner for the human body. During conditions of high air temperature and humidity (high heat index), the body's ability to perspire is inhibited, increasing the sensation of warmth. Inadequate heat shedding in the face of rising body temperatures hints at potential dehydration risks.

Humidity

In Mermentau, Louisiana, the average relative humidity in August is 79%.

Rainfall

August is the month with the most rainfall in Mermentau. Rain falls for 18.6 days and accumulates 3.58" (91mm) of precipitation.

Snowfall

In Mermentau, snow does not fall in February through December.

Daylight

In August, the average length of the day in Mermentau is 13h and 12min.
On the first day of August in Mermentau, sunrise is at 6:29 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 7:33 pm CDT.

Sunshine

In August, the average sunshine in Mermentau is 10.4h.

UV index

The months with the highest UV index in Mermentau are May through August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In August, a regular UV index of 7 translates into these guidelines:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
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Frequently asked questions

What is the warmest month in Mermentau?

Mermentau's August weather reaches an average high of 90°F (32.2°C) and an average low of 75.2°F (24°C), making it the warmest month.

How hot does it get in Mermentau in August?

The high-temperature, in August, in Mermentau, records 90°F (32.2°C), while the low-temperature is 75.2°F (24°C). The average heat index (a.k.a. 'real feel', 'feels like'), which factors the actual air temperature with the relative humidity, in August is computed to be 113°F (45°C).

What is the average humidity in August in Mermentau?

In August, the average relative humidity in Mermentau is 79%.

What is the wettest month in Mermentau?

August is the month with the most rainfall in Mermentau. Rain falls for 18.6 days and accumulates 3.58" (91mm) of precipitation.

How much does it rain in Mermentau in August?

In Mermentau, during August, the rain falls for 18.6 days and regularly aggregates up to 3.58" (91mm) of precipitation.

When it does not snow in Mermentau?

February through December are months without snowfall.

What is the average length of the day in August in Mermentau?

In Mermentau, Louisiana, the average day length in August is 13h and 12min.

What time are sunrise and sunset in August in Mermentau?

On the first day of August in Mermentau, sunrise is at 6:29 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 6:47 am and sunset at 7:33 pm CDT.

How long on average sun shines in August in Mermentau?

In August, the average sunshine duration in Mermentau is 10.4h.

When is the highest UV index in Mermentau?

The months with the highest UV index in Mermentau, Louisiana, are May through August, with an average maximum UV index of 7.

How high is the UV index in August in Mermentau?

The average daily maximum UV index in August is 7. A UV Index estimate of 6 to 7 represents a high health threat from 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 August
Mermentau, LA

Average temperature in August - Mermentau, LA
  • Average high temperature in August: 90°F

The warmest month (with the highest average high temperature) is August (90°F).
The month with the lowest average high temperature is January (59°F).

  • Average low temperature in August: 75.2°F

The months with the highest average low temperature are July and August (75.2°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).

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Average pressure in August
Mermentau, LA

Average pressure in August - Mermentau, LA
  • Average pressure in August: 29.95"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in August
Mermentau, LA

Average wind speed in August - Mermentau, LA
  • Average wind speed in August: 5.8mph

The windiest month (with the highest average wind speed) is February (9.2mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

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Average humidity in August
Mermentau, LA

Average humidity in August - Mermentau, LA
  • Average humidity in August: 79%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in August
Mermentau, LA

Average rainfall in August - Mermentau, LA
  • Average rainfall in August: 3.58"

The wettest month (with the highest rainfall) is August (3.58").
The driest month (with the least rainfall) is February (1.61").

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Average rainfall days in August
Mermentau, LA

Average rainfall days in August - Mermentau, LA
  • Average rainfall days in August: 18.6 days

The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is November (9.3 days).

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Average snowfall in August
Mermentau, LA

Average snowfall in August - Mermentau, LA
  • Average snowfall in August: 0"

The month with the highest snowfall is January (0.12").
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 August
Mermentau, LA

Average snowfall days in August - Mermentau, LA
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (0.3 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 August /
Average sunshine in August
Mermentau, LA

Average daylight in August / Average sunshine in August - Mermentau, LA
  • Average daylight in August: 13h and 1min

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 August: 10h and 2min

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 August
Mermentau, LA

Average sunshine days in August - Mermentau, LA
  • Average sunshine days in August: 9.9 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is August (9.9 days).

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Average UV index in August
Mermentau, LA

Average UV index in August - Mermentau, LA
  • Average UV index in August: 7

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 August
Mermentau, LA

Average cloud cover in August - Mermentau, LA
  • Average cloud cover in August: 28

The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is October (Cloud cover 25).

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Average visibility in August
Mermentau, LA

Average visibility in August - Mermentau, LA
  • Average visibility in August: 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).

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Mermentau, Louisiana, USA

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