Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall days in August
- Average sea temperature in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
July and August, with an average high-temperature of 86.9°F (30.5°C), are marked as the warmest months.Heat index
The heat index value for August is appraised at a sweltering 98.6°F (37°C). Adopt enhanced safety measures, heat exhaustion and heat cramps could occur. Continuous activity may induce heatstroke.Heat index data is primarily for areas with shade and subjected to light winds. Heat index values have the potential to be boosted by 15 Fahrenheit (8 Celsius) degrees due to direct sunlight.
Note: The heat index, also known as 'feels like' or 'real feel', joins air temperature with relative humidity to produce a temperature perception for humans. The impact of weather on an individual can be subjective, affected by the person's activity and heat perception, which can vary due to elements including wind, clothing, and metabolic differences. Realize that direct exposure to sunlight can augment the felt heat, leading to a potential increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are primarily vital for children. Young individuals usually face more risks than adults due to their lower sweat production. Their large skin surface area relative to their tiny bodies and high heat production from their activities adds to their risk.
By perspiring, the human body can shed its excessive warmth since evaporated sweat cools it off. A surge in relative humidity can disrupt the body's normal cooling function by slowing evaporation, hence reducing the rate at which the body cools and intensifying the perception of heat. When the body is unable to balance heat gain, its temperature elevates, which may induce thermal illnesses.
Humidity
The average relative humidity in August is 74%.Rainfall
August is the month with the most rainfall in Grand Isle. Rain falls for 20.7 days and accumulates 4.72" (120mm) of precipitation.Snowfall
In Grand Isle, snow does not fall in February through December.Ocean temperature
The month with the warmest seawater is August, with an average ocean temperature of 87.4°F (30.8°C).Note: It is often said that swimming in waters above 86°F (30°C) can feel less revitalizing.
Daylight
In Grand Isle, the average length of the day in August is 13h and 10min.On the first day of the month, sunrise is at 6:20 am and sunset at 7:51 pm. On the last day of August, sunrise is at 6:37 am and sunset at 7:22 pm CDT.
Sunshine
The average sunshine in August in Grand Isle is 10.8h.UV index
May through September, with an average maximum UV index of 7, are months with the highest UV index. A UV Index value of 6 to 7 symbolizes a high health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: The maximum UV index of 7 during August leads to these instructions:
Stay clear of intense sun exposure. Solar protection is of utmost significance. Remember that UV radiation from the Sun is strongest between 10 a.m. and 4 p.m. Make an effort to limit direct sun exposure during this time. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days. Warning! The reflection of sand and water increases the UV dose.
Frequently asked questions
What time of the year is the hottest in Grand Isle?
How hot does it get in Grand Isle in August?
What is the average humidity in August in Grand Isle?
What is the rainiest month in Grand Isle?
How much does it rain in Grand Isle in August?
When it does not snow in Grand Isle?
What month is the ocean warmest in Grand Isle?
What is the ocean temperature in August in Grand Isle?
What is the average length of the day in August in Grand Isle?
When are sunrise and sunset in August in Grand Isle?
How long on average sun shines in August in Grand Isle?
What are the months with the highest UV index in Grand Isle?
What is the UV index reading in August in Grand Isle?
Average temperature in August
Grand Isle, LA
- Average high temperature in August: 86.9°F
The warmest months (with the highest average high temperature) are July and August (86.9°F).
The month with the lowest average high temperature is January (61.7°F).
- Average low temperature in August: 81.3°F
The month with the highest average low temperature is August (81.3°F).
The coldest month (with the lowest average low temperature) is January (53.1°F).
Average pressure in August
Grand Isle, LA
- Average pressure in August: 29.97"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is September (29.96"Hg).
Average wind speed in August
Grand Isle, LA
- Average wind speed in August: 8.1mph
The windiest month (with the highest average wind speed) is January (12.4mph).
The calmest month (with the lowest average wind speed) is July (8mph).
Average humidity in August
Grand Isle, LA
- Average humidity in August: 74%
The months with the highest relative humidity are February and December (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in August
Grand Isle, LA
- Average rainfall in August: 4.72"
The wettest month (with the highest rainfall) is August (4.72").
The driest months (with the least rainfall) are February and April (0.87").
Average rainfall days in August
Grand Isle, LA
- Average rainfall days in August: 20.7 days
The month with the highest number of rainy days is August (20.7 days).
The month with the least rainy days is November (7.5 days).
Average snowfall days in August
Grand Isle, 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 sea temperature in August
Grand Isle, LA
- Average sea temperature in August: 87.5°F
The best month for swimming (with the highest average sea temperature) is August (87.5°F).
The coldest month (with the lowest average sea temperature) is January (61.4°F).
Average daylight in August /
Average sunshine in August
Grand Isle, LA
- Average daylight in August: 13h and 1min
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 August: 10h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in August
Grand Isle, LA
- Average sunshine days in August: 6.5 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is August (6.5 days).
Average UV index in August
Grand Isle, LA
- Average UV index in August: 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 August
Grand Isle, LA
- Average cloud cover in August: 27
The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is May (Cloud cover 23).
Average visibility in August
Grand Isle, 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).
Grand Isle, Louisiana, USA
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