Last Update: 1127 AM CST Tue Jan 13 2026

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19NM SE Grand Isle LA

Marine Zone Forecast


This Afternoon
North winds around 5 knots. Seas 1 foot or less, then 1 to 2 feet. Wave detail: east 1 foot at 5 seconds.
Tonight
West winds around 5 knots, increasing to 10 to 15 knots after midnight. Seas 1 foot or less, then 1 to 2 feet after midnight. Wave detail: northwest 1 foot at 2 seconds and east 1 foot at 5 seconds, becoming west 2 feet at 3 seconds and southeast 1 foot at 5 seconds. A slight chance of showers in the evening, then a chance of showers after midnight.
Wednesday
West winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: west 4 feet at 4 seconds and southeast 1 foot at 5 seconds.
Wednesday Night
Northwest winds 20 to 25 knots, becoming north 25 to 30 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: west 5 feet at 6 seconds. A slight chance of showers.
Thursday
North winds 20 to 25 knots, diminishing to 15 to 20 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: north 4 feet at 3 seconds.
Thursday Night
North winds 10 to 15 knots with gusts up to 20 knots, becoming southeast around 5 knots after midnight. Seas 1 to 2 feet in the evening, then 1 foot or less. Wave detail: north 2 feet at 2 seconds, becoming northeast 1 foot at 2 seconds.
Friday
Southwest winds 5 to 10 knots. Seas 1 foot or less. Wave detail: south 1 foot at 2 seconds.
Friday Night
Southwest winds around 10 knots, becoming northwest 15 to 20 knots after midnight. Seas around 2 feet. Wave detail: southwest 2 feet at 3 seconds.
Saturday
North winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave detail: north 2 feet at 3 seconds.
Saturday Night
North winds 10 to 15 knots. Seas 2 to 3 feet. Wave detail: north 2 feet at 3 seconds.



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1127 AM CST Tue Jan 13 2026
 
 

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