Measurements:
°C
°F
Grand Isle
66°F
S 17 mph
Feels like: 64°F
Precip: 0%
World Resorts USA Grand Isle Weather May Weather in Grand Isle

Grand Isle Weather: May

Average Day Temperature: 81.9°F
Average Night Temperature: 78.7°F
Sea Water Temperature: 83.0°F
Number of Sunny Days: 13 days
Sunshine Hours: 13.3 - 13.9 hours
Number of Rainy Days: 3 days
Precipitation Totals: 1.6 in

Air Temperature in May, °F

Select Year: 2024 2023 2022

The highest day temperature in May 2024 was 88°F. The lowest night temperature was 76°F. The average values for day and night temperatures during May were 83.2°F и 81.0°F respectivly.

Grand Isle Water Sea Temperature in May, °F

Select Year: 2024 2023 2022

The average sea surface temperature in May 2024 for Grand Isle was 83.7°F. The maximum and minimum values were 79.0°F and 89.6°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in May are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in May, in

Precipitation total in May for Grand Isle is 1.6 in.

Wind Speed in May, mph

The average wind speed in May is 11.5 mph.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Grand Isle in May is 8.4 hours.

Best Time to Visit Grand Isle
The most sunny months:
October 15 days
November 13 days
May 13 days
The most warm months:
August 89.9 °F
July 89.2 °F
June 87.5 °F
Warmest sea temperature:
August 92.2 °F
July 91.1 °F
June 88.7 °F
The most cold months:
January 60.7 °F
February 62.6 °F
December 64.7 °F
The most rainy months:
July 6 days
August 5 days
June 4 days
The most windy months:
April 12 mph
January 12 mph
March 12 mph

Grand Isle on the Weather Map

USA Resorts:
NAME
Boston +48
Chicago +34
Hawaii +80
Honolulu +80
Houston +74
Las Vegas +68
Los Angeles +74
Maui +74
Miami +80
New York +48
San Diego +70
San Francisco +58
Sarasota +74
Tampa +72
Washington +48
24 Hours Weather Forecast
Grand Isle
Local time: 15:54
21 nov, thursday
1800 66°F
SE
14 mph
2100 64°F
SE
15 mph
22 nov, friday
0000 64°F
SE
15 mph
0300 62°F
SE
16 mph
0600 60°F
SE
16 mph
0900 58°F
S
16 mph
1200 60°F
S
14 mph
1500 64°F
S
13 mph