29.2633’ N, 89.9567’ W

Grand Isle, LA

87°
H -°
L 81°
SE
3mph
High tide
2:39 am

Grand Isle, LA Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Wed
Sep 2
Partly Cloudy
Close Hourly
-º / 81º 15% ESE 4 mph 74%
6pm Partly Cloudy 87º 15% SE 3 mph 67%
7pm Partly Cloudy 87º 15% SE 2 mph 69%
8pm Partly Cloudy 85º 15% SE 3 mph 73%
9pm Mostly Cloudy 83º 15% SE 3 mph 76%
10pm Mostly Cloudy 83º 2% ESE 4 mph 76%
11pm Mostly Cloudy 83º 2% SE 4 mph 76%
Thu
Sep 3
PM Thunderstorms
View Hourly
85º / 79º 61% E 9 mph 76%
12am Mostly Cloudy 83º 2% SE 3 mph 76%
1am Mostly Cloudy 83º 4% ESE 2 mph 76%
2am Partly Cloudy 83º 4% ESE 2 mph 77%
3am Partly Cloudy 83º 4% ESE 1 mph 76%
4am Partly Cloudy 83º 4% E 2 mph 77%
5am Mostly Clear 83º 9% E 2 mph 77%
6am Partly Cloudy 82º 6% ENE 3 mph 78%
7am Sunny 82º 9% NE 5 mph 79%
8am Sunny 83º 9% NE 6 mph 80%
9am Sunny 83º 19% NE 9 mph 79%
10am Mostly Sunny 83º 20% NE 9 mph 79%
11am Mostly Sunny 84º 19% ENE 6 mph 77%
12pm Partly Cloudy 84º 24% ENE 7 mph 75%
1pm Showers 84º 36% E 7 mph 73%
2pm Thunderstorms 84º 61% ESE 7 mph 74%
3pm Partly Cloudy 84º 24% ESE 8 mph 73%
4pm Mostly Cloudy 84º 21% ESE 6 mph 71%
5pm Partly Cloudy 84º 21% ESE 6 mph 73%
6pm Mostly Cloudy 84º 13% SE 6 mph 74%
7pm Mostly Cloudy 84º 6% ESE 4 mph 74%
8pm Mostly Cloudy 82º 5% ESE 3 mph 77%
9pm Partly Cloudy 82º 10% ESE 3 mph 79%
10pm Mostly Cloudy 82º 6% E 3 mph 79%
11pm Partly Cloudy 82º 10% E 3 mph 79%
Fri
Sep 4
Scattered Thunderstorms
View Hourly
84º / 80º 58% ENE 8 mph 80%
12am Partly Cloudy 82º 13% E 3 mph 79%
1am Partly Cloudy 82º 22% E 2 mph 79%
2am Mostly Cloudy 82º 17% E 3 mph 79%
3am Partly Cloudy 82º 24% NE 3 mph 79%
4am Partly Cloudy 81º 24% NE 4 mph 80%
5am Isolated Thunderstorms 81º 33% NNE 5 mph 81%
6am Scattered Thunderstorms 81º 41% N 4 mph 81%
7am Scattered Thunderstorms 80º 54% N 7 mph 84%
8am Scattered Thunderstorms 80º 58% NNE 7 mph 87%
9am Scattered Thunderstorms 79º 48% NNE 8 mph 88%
10am Scattered Thunderstorms 80º 41% NNE 8 mph 87%
11am Scattered Thunderstorms 81º 37% NE 7 mph 84%
12pm Scattered Thunderstorms 82º 48% NE 8 mph 79%
1pm Scattered Thunderstorms 82º 36% ENE 6 mph 77%
2pm Scattered Thunderstorms 83º 38% E 6 mph 76%
3pm Few Showers 83º 34% ESE 5 mph 75%
4pm Partly Cloudy 83º 24% SE 5 mph 74%
5pm Partly Cloudy 83º 20% SE 5 mph 74%
Sat
Sep 5
Thunderstorms 85º / 79º 62% W 7 mph 76%
Sun
Sep 6
AM Thunderstorms 85º / 79º 47% WSW 8 mph 75%
Mon
Sep 7
Scattered Thunderstorms 85º / 79º 47% WSW 7 mph 76%
Tue
Sep 8
Scattered Thunderstorms 85º / 80º 52% E 9 mph 75%
Wed
Sep 9
Scattered Thunderstorms 85º / 80º 49% ESE 9 mph 73%

Weather Radar for Grand Isle, LA See Radar

* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Grand Isle, LA

Late Afternoon
High : 88ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms. Seas around 1 ft.
Tonight
Low : 85ºF
Variable winds 5 kt or less. A slight chance of showers and thunderstorms before 7pm. Seas 1 ft or less.
Thursday
High : 88ºF
Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly before 2pm. Seas 1 ft or less.
Thursday Night
Low : 81ºF
Variable winds 5 kt or less. A chance of showers and thunderstorms, mainly after 3am. Seas 1 ft or less.
Friday
High : 87ºF
Variable winds 5 kt or less. Showers likely and possibly a thunderstorm. Seas 1 ft or less.
Friday Night
Low : 81ºF
Variable winds 5 kt or less. A chance of showers and thunderstorms before 10pm, then a chance of showers between 10pm and 4am, then a chance of showers and thunderstorms after 4am. Seas 1 ft or less.
Saturday
High : 87ºF
Variable winds 5 kt or less. Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Seas 1 ft or less.
Saturday Night
Low : 82ºF
Variable winds 5 kt or less. A chance of showers and thunderstorms after 1am. Seas 1 ft or less.
Sunday
High : 87ºF
Variable winds 5 kt or less. A chance of showers and thunderstorms. Seas 1 ft or less.

NOAA Buoy Data Near Grand Isle, LA See Map

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    Wind Speed Forecast for Grand Isle, LA

    WednesdayThursdayFriday
    Wind Speed (MPH) 342397633486
    11pm3am7am11am3pm7pm11pm3am7am11am3pm7pm
    MPH 342397633486
    DIR SEESEESEENENEESESEEENNNEE

    Current Weather Conditions In Grand Isle, LA

    As Of: 42 minutes ago

    • 87ºF
    • 97ºF
    • 3mph
    • 0º (SE)
    • 3mph
    • Partly Cloudy
    • 10mi
    • 29.97"
    • 67%
    • 0ºF

    The weather right now in Grand Isle, LA is Partly Cloudy. The current temperature is 87°F, and the expected high and low for today, Wednesday, September 2, 2026, are -° high temperature and 81°F low temperature. The wind is currently blowing at 3 miles per hour, and coming from the Southeast. The wind is gusting to 3 mph. With the wind and the atmosphere the temperature feels like 97° Fahrenheit. Expected precipitation is 15 percent, with current humidity at 67 percent, and air pressure at 29.97 in. Visibility is 10 nautical miles. There are no current weather alert(s).