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Last Update: 439 PM AST Tue Aug 11 2026

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San Juan, PR Local Forecast Office

12NM SW Mayaguez PR

Marine Zone Forecast


Tonight
East winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots late this evening and overnight. Seas 2 to 3 feet. Wave detail: east 2 feet at 5 seconds. Scattered showers early this evening, then isolated showers late this evening and overnight.
Wednesday
Southeast winds 10 to 15 knots with gusts up to 25 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 4 seconds.
Wednesday Night
East winds 10 to 15 knots with gusts up to 25 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 5 seconds.
Thursday
East winds 15 to 20 knots with gusts up to 30 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: southeast 3 feet at 4 seconds.
Thursday Night
East winds 15 to 20 knots with gusts up to 30 knots, diminishing to 10 to 15 knots with gusts up to 20 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: southeast 3 feet at 4 seconds.
Friday
East winds 15 to 20 knots with gusts up to 30 knots. Seas 2 to 3 feet, building to 3 to 5 feet, occasionally to 6 feet in the afternoon. Wave detail: east 3 feet at 5 seconds, becoming southeast 3 feet at 5 seconds.
Friday Night
East winds 15 to 20 knots with gusts up to 25 knots, becoming northeast 5 to 10 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet.
Saturday
East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers in the afternoon.
Saturday Night
Northeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet.
Sunday
Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers in the afternoon.
Sunday Night
Northeast winds 15 to 20 knots, becoming east 10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet.



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439 PM AST Tue Aug 11 2026
 
 

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