Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall days in April
- Average sea temperature in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
In April, the average high-temperature in Grand Isle marginally rises from a pleasant 68.9°F (20.5°C) in March to a moderately hot 74.3°F (23.5°C). April nights register a minor temperature decline, steadying at a refreshing 67.3°F (19.6°C).Humidity
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
February through December are months without snowfall.Ocean temperature
In April, the average ocean temperature in Grand Isle is 73.6°F (23.1°C).Note: People sensitive to cold might find swimming in 73.6°F (23.1°C) challenging. However, conditions like sunshine, wind, and ambient temperature play a significant role in the overall comfort. Wetsuits, while optional, might be beneficial.
Daylight
The average length of the day in April is 12h and 53min.On the first day of April, sunrise is at 6:48 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.
Sunshine
In April, the average sunshine is 10.3h.UV index
In April, the average daily maximum UV index is 6. A UV Index reading of 6 to 7 represents a high health hazard from exposure to the Sun's UV rays for the average person.Note: In April, the maximum UV index of 6 suggests this advice:
Prevent overexposure. Protection from the sun's harmful effects is needed. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Attention! UV strength is notably upped by the reflection of sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Grand Isle in April?
What is the average humidity in April in Grand Isle?
What is the driest month?
How many days does it rain in April?
When it does not snow in Grand Isle?
What is the water temperature in April?
What is the average length of the day in April?
When is the sunrise / sunset in April?
How long on average sun shines in April?
What is the UV index reading in April?
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).
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).
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).
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%).
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").
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).
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).
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).
Average daylight in April /
Average sunshine in April
Grand Isle, LA
- Average daylight in April: 12h and 5min
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 April: 10h and 2min
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 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).
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).
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).
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).
Grand Isle, Louisiana, USA
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