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Last Update: 403 AM AST Wed May 20 2026

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San Juan, PR Local Forecast Office

12NM SW Mayaguez PR

Marine Zone Forecast


Today
East winds 10 to 15 knots with gusts up to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: southeast 3 feet at 6 seconds and northeast 1 foot at 2 seconds. Isolated showers early this morning, then scattered showers late this morning and early afternoon. Isolated showers late.
Tonight
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: southeast 3 feet at 6 seconds.
Thursday
East winds 10 to 15 knots with gusts up to 25 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 7 seconds and northeast 1 foot at 2 seconds.
Thursday Night
East winds 10 to 15 knots with gusts up to 25 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 6 seconds.
Friday
East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave detail: south 2 feet at 7 seconds. Scattered showers in the afternoon.
Friday Night
East winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave detail: south 2 feet at 6 seconds. Scattered showers in the evening.
Saturday
East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers in the afternoon.
Saturday Night
East winds 5 to 10 knots. Seas 2 to 3 feet.
Sunday
East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Scattered showers in the afternoon.
Sunday Night
East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet. Scattered showers.



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403 AM AST Wed May 20 2026
 
 

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