April weather forecast
Grand Isle, LA

The scenic Grand Isle, Louisiana, with a view of the numerous houses and the extended piers onto the calm seawater
The scenic Grand Isle, Louisiana, with a view of the numerous houses and the extended piers onto the calm seawater

Weather in April

April in Grand Isle, Louisiana, is a warm spring month, with an average temperature ranging between max 74.3°F (23.5°C) and min 67.3°F (19.6°C).

Temperature

In April, the average high-temperature marginally rises from a pleasant 68.9°F (20.5°C) in March to a warm 74.3°F (23.5°C). The average low-temperature, in Grand Isle, is 67.3°F (19.6°C).

Humidity

In Grand Isle, the average relative humidity in April is 76%.

Rainfall

The months with the least rainfall in Grand Isle are February and April Rain falls for 8.8 days and accumulates 0.87" (22mm) of rain.

Snowfall

In Grand Isle, snow does not fall in February through December.

Ocean temperature

In Grand Isle, the average seawater temperature in April is 73.6°F (23.1°C).
Note: A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 73.6°F (23.1°C) water. (FYI: The Olympic swimming competition requires a water temperature between 77°F (25°C) and 82.4°F (28°C).)

Daylight

In April, the average length of the day is 12h and 53min.
On the first day of the month, sunrise is at 6:49 am and sunset at 7:18 pm. On the last day of April, in Grand Isle, sunrise is at 6:18 am and sunset at 7:35 pm CDT.

Sunshine

The average sunshine in April is 10.3h.

UV index

In April, the average daily maximum UV index in Grand Isle is 6. A UV Index of 6 to 7 symbolizes a high threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The daily maximum UV index of 6 in April interpret into the following advice:
Take precautions and adopt sun safety practices. Protection against sunburn is obliged. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in April in Grand Isle?

In Grand Isle, in April, the average high-temperature is 74.3°F (23.5°C), and the average low-temperature is 67.3°F (19.6°C).

What is the average humidity in April in Grand Isle?

In Grand Isle, Louisiana, the average relative humidity in April is 76%.

What is the driest month in Grand Isle?

February and April are months with the least rain in Grand Isle, Louisiana, when the rain falls for 8.8 days and typically aggregates up to 0.87" (22mm) of rain.

How many days does it rain in April in Grand Isle?

In Grand Isle, Louisiana, in April, it is raining for 8.8 days, with typically 0.87" (22mm) of accumulated precipitation.

When it does not snow in Grand Isle?

In Grand Isle, snow does not fall in February through December.

What is the ocean temperature in April in Grand Isle?

In Grand Isle, Louisiana, the average seawater temperature in April is 73.6°F (23.1°C). For individuals prone to feeling cold, swimming in 73.4°F (23°C) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 73.6°F (23.1°C).

What is the average length of the day in April in Grand Isle?

In April, the average day length in Grand Isle, Louisiana, is 12h and 53min.

When is the sunrise / sunset in April in Grand Isle?

In April, on the first day of the month, sunrise is at 6:49 am and sunset at 7:18 pm. On the last day of the month, sunrise is at 6:18 am and sunset at 7:35 pm CDT.

How many hours of sunshine does Grand Isle have in April?

The average sunshine duration in April in Grand Isle is 10.3h.

How high is the UV index in April in Grand Isle?

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

Average temperature in April
Grand Isle, LA

Average temperature in April - Grand Isle, LA
  • Average high temperature in April: 74.3°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 April: 67.3°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).

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Average pressure in April
Grand Isle, LA

Average pressure in April - Grand Isle, LA
  • Average pressure in April: 30"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).

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Average wind speed in April
Grand Isle, LA

Average wind speed in April - Grand Isle, LA
  • Average wind speed in April: 12.1mph

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).

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Average humidity in April
Grand Isle, LA

Average humidity in April - Grand Isle, LA
  • Average humidity in April: 76%

The months with the highest relative humidity are February and December (78%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in April
Grand Isle, LA

Average rainfall in April - Grand Isle, LA
  • Average rainfall in April: 0.87"

The wettest month (with the highest rainfall) is August (4.72").
The driest months (with the least rainfall) are February and April (0.87").

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Average rainfall days in April
Grand Isle, LA

Average rainfall days in April - Grand Isle, LA
  • Average rainfall days in April: 8.8 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).

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Average snowfall days in April
Grand Isle, LA

Average snowfall days in April - Grand Isle, LA
  • Average snowfall days in April: 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).

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Average sea temperature in April
Grand Isle, LA

Average sea temperature in April - Grand Isle, LA
  • Average sea temperature in April: 73.6°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).

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Average daylight in April /
Average sunshine in April
Grand Isle, LA

Average daylight in April / Average sunshine in April - Grand Isle, LA
  • Average daylight in April: 12h and 53min

The month with the longest days is June (Average daylight: 13h and 59min).
The month with the shortest days is December (Average daylight: 10h and 19min).

  • Average sunshine in April: 10h and 18min

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).

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Average sunshine days in April
Grand Isle, LA

Average sunshine days in April - Grand Isle, LA
  • Average sunshine days in April: 18.6 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).

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Average UV index in April
Grand Isle, LA

Average UV index in April - Grand Isle, LA
  • Average UV index in April: 6

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).

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Average cloud cover in April
Grand Isle, LA

Average cloud cover in April - Grand Isle, LA
  • Average cloud cover in April: 28

The month with the most cloud cover is December (Cloud cover 42).
The month with the least cloud cover is May (Cloud cover 23).

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Average visibility in April
Grand Isle, LA

Average visibility in April - Grand Isle, LA
  • Average visibility in April: 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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