Station GISL1 - 8761724 - Grand Isle, LA
August 18, 2026 5:48 am CDTLocation: 29.265N 89.958W
Wind Direction: W (280°)
Wind Speed: 12.1 knots
Wind Gust: 14.0 knots
Atmospheric Pressure: 30.05 in (1017.6 mb)
Water Temperature: 89.6°F (32.0°C)
Today - 90°F
Aug 18, 2026
5 to 10 mph W
Mostly Sunny
Mostly sunny. High near 90, with temperatures falling to around 88 in the afternoon. West wind 5 to 10 mph.
Tonight - 84°F
Aug 18, 2026
10 mph W
Partly Cloudy
Partly cloudy, with a low around 84. West wind around 10 mph.
Wednesday - 89°F
Aug 19, 2026
5 to 10 mph W
Mostly Sunny
Mostly sunny, with a high near 89. West wind 5 to 10 mph.
Wednesday Night - 83°F
Aug 19, 2026
10 mph W
Partly Cloudy
Partly cloudy, with a low around 83. West wind around 10 mph.
Thursday - 89°F
Aug 20, 2026
5 to 10 mph W
Mostly Sunny
Mostly sunny, with a high near 89. West wind 5 to 10 mph.
Thursday Night - 83°F
Aug 20, 2026
10 mph W
Partly Cloudy
Partly cloudy, with a low around 83. West wind around 10 mph.
Friday - 90°F
Aug 21, 2026
5 to 10 mph W
Mostly Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. West wind 5 to 10 mph. Chance of precipitation is 20%.
Friday Night - 83°F
Aug 21, 2026
10 to 15 mph W
Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 83. West wind 10 to 15 mph.
Saturday - 90°F
Aug 22, 2026
5 to 10 mph W
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. West wind 5 to 10 mph.
Saturday Night - 83°F
Aug 22, 2026
10 mph W
Chance Showers And Thunderstorms then Partly Cloudy
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 83. West wind around 10 mph.
Sunday - 90°F
Aug 23, 2026
5 to 10 mph W
Sunny then Slight Chance Showers And Thunderstorms
A slight chance of showers and thunderstorms after 1pm. Sunny, with a high near 90. West wind 5 to 10 mph.
Sunday Night - 84°F
Aug 23, 2026
5 to 10 mph W
Slight Chance Showers And Thunderstorms then Mostly Clear
A slight chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 84. West wind 5 to 10 mph.
Monday - 89°F
Aug 24, 2026
5 mph W
Sunny
Sunny, with a high near 89. West wind around 5 mph.
Monday Night - 84°F
Aug 24, 2026
5 mph SW
Mostly Clear
Mostly clear, with a low around 84. Southwest wind around 5 mph.