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

Grand Isle Weather: December

Average Day Temperature: 64.7°F
Average Night Temperature: 61.7°F
Sea Water Temperature: 67.8°F
Number of Sunny Days: 9 days
Sunshine Hours: 10.3 - 10.4 hours
Number of Rainy Days: 2 days
Precipitation Totals: 0.9 in

Air Temperature in December, °F

Select Year: 2023 2022 2021

The highest day temperature in December 2023 was 73°F. The lowest night temperature was 45°F. The average values for day and night temperatures during December were 62.4°F и 60.2°F respectivly.

Grand Isle Water Sea Temperature in December, °F

Select Year: 2023 2022 2021

The average sea surface temperature in December 2023 for Grand Isle was 66.7°F. The maximum and minimum values were 63.0°F and 70.4°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in December are cloudy but you can also expect sunny or gloomy days.

Precipitation Totals in December, in

Precipitation total in December for Grand Isle is 0.9 in. It makes december one of the least rainy months of the year.

Wind Speed in December, mph

The average wind speed in December is 11.7 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 December is 5.8 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 +60
Los Angeles +74
Maui +74
Miami +86
New York +48
San Diego +72
San Francisco +58
Sarasota +76
Tampa +76
Washington +52
24 Hours Weather Forecast
Grand Isle
Local time: 15:21
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