August weather forecast
Lafayette, LA

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A monument and trees in the tranquil Lafayette Square, Louisiana
A monument and trees in the tranquil Lafayette Square, Louisiana

Weather in August

August amplifies the summer conditions as it might turn out to be the hottest month, despite temperatures being between 74.8°F (23.8°C) and 90°F (32.2°C), similar to July. Combining the peak heat with the highest levels of rainfall and humidity, it is the epitome of a typical Louisiana summer. Subsequently, August also witnesses the year's most abundant rainy days evidencing Louisiana's infamous summer showers. If one plans to experience the intense yet exhilarating summers of Lafayette, August is the month to choose.

Temperature

With average high temperatures of 90°F (32.2°C) and lows of 74.8°F (23.8°C), August is the warmest month.

Heat index

Throughout August, the heat index is evaluated at a burning hot 113°F (45°C). Guard: Heat exhaustion and heat cramps are foreseeable. Prolonged effort may bring about heatstroke.
Regarding the heat index, one should be aware it's determined by shaded settings and mild winds. The heat index values could be amplified by up to 15 Fahrenheit (8 Celsius) degrees in direct sunlight.
Note: The heat index, also known as 'apparent temperature' or 'felt air temperature', is a numerical representation of warmth when taking temperature and moisture levels into account. Elements such as metabolic variations, pregnancy, and physical exertion can shape one's weather perception. You should know that direct sun exposure can heighten weather effects, potentially elevating the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are extremely significant for children. Children often overlook the necessity for resting and fluid replenishment. Thirst is a late sign of dehydration - thus, it is critical to stay hydrated, especially during extended periods of physical activities.
To cool down, the human body relies on perspiration, a process where excessive heat is eliminated as sweat evaporates. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Accumulating more heat than the body can dissipate leads to an uptick in body temperature, with potential heat stress consequences.

Humidity

The average relative humidity in August is 80%.

Rainfall

August is the month with the most rainfall. Rain falls for 20 days and accumulates 2.8" (71mm) of precipitation.

Snowfall

February through December are months without snowfall.

Daylight

In Lafayette, the average length of the day in August is 13h and 12min.
On the first day of August, sunrise is at 6:27 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 7:31 pm CDT.

Sunshine

The average sunshine in August is 10.1h.

UV index

The months with the highest UV index are May through August, with an average maximum UV index of 7. A UV Index value of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for the average person.
Note: A typical high UV index of 7 in August suggests the following recommendations:
Evade overexposure. Individuals with fair skin risk burning in under 20 minutes. Try to minimize direct Sun exposure between 10 a.m. and 4 p.m., the peak period for UV radiation. Also note that objects like parasols or canopies might not provide complete sun protection. Always opt for UVA and UVB-resistant sunglasses on radiant days.
Updated: Aug 23, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the warmest month?

August, having an average high-temperature of 90°F (32.2°C) and an average low-temperature of 74.8°F (23.8°C), is the warmest month.

How hot does it get in August?

The average high-temperature and low-temperature during August are 90°F (32.2°C) and 74.8°F (23.8°C) respectively. In August, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is evaluated at 113°F (45°C).

What is the average humidity in August?

The average relative humidity in August is 80%.

What is the rainiest month?

August is the month with the most rainfall. Rain falls for 20 days and accumulates 2.8" (71mm) of precipitation.

How many days does it rain in August?

In Lafayette, during August, the rain falls for 20 days and regularly aggregates up to 2.8" (71mm) of precipitation.

When it does not snow?

February through December are months without snowfall.

How many hours of daylight does Lafayette have in August?

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

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:27 am and sunset at 8:01 pm. On the last day of the month, sunrise is at 6:44 am and sunset at 7:31 pm CDT.

How many hours of sunshine does Lafayette have in August?

In Lafayette, the average sunshine duration in August is 10.1h.

What is the month with the highest UV index?

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

What is the UV index reading in August?

The average daily maximum UV index in August is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Lafayette, LA

Average temperature in August - Lafayette, 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 (58.8°F).

  • Average low temperature in August: 74.8°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 (44.2°F).

Average pressure in August
Lafayette, LA

Average pressure in August - Lafayette, LA
  • Average pressure in August: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).

Average wind speed in August
Lafayette, LA

Average wind speed in August - Lafayette, LA
  • Average wind speed in August: 5.3mph

The windiest month (with the highest average wind speed) is February (8.2mph).
The calmest months (with the lowest average wind speed) are July, August and September (5.3mph).

Average humidity in August
Lafayette, LA

Average humidity in August - Lafayette, LA
  • Average humidity in August: 80%

The month with the highest relative humidity is February (81%).
The month with the lowest relative humidity is October (73%).

Average rainfall in August
Lafayette, LA

Average rainfall in August - Lafayette, LA
  • Average rainfall in August: 2.8"

The wettest month (with the highest rainfall) is August (2.8").
The driest month (with the least rainfall) is March (0.83").

Average rainfall days in August
Lafayette, LA

Average rainfall days in August - Lafayette, LA
  • Average rainfall days in August: 20 days

The month with the highest number of rainy days is August (20 days).
The months with the least rainy days are January and November (7.8 days).

Average snowfall days in August
Lafayette, LA

Average snowfall days in August - Lafayette, LA
  • Average snowfall days in August: 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 August /
Average sunshine in August
Lafayette, LA

Average daylight in August / Average sunshine in August - Lafayette, 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 1min

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 0min).

Average sunshine days in August
Lafayette, LA

Average sunshine days in August - Lafayette, LA
  • Average sunshine days in August: 8 days

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is August (8 days).

Average UV index in August
Lafayette, LA

Average UV index in August - Lafayette, 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).

Average cloud cover in August
Lafayette, LA

Average cloud cover in August - Lafayette, LA
  • Average cloud cover in August: 30

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

Average visibility in August
Lafayette, LA

Average visibility in August - Lafayette, 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).

Lafayette, Louisiana, USA

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