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Last Update: 326 AM AST Sat Jul 4 2026

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San Juan, PR Local Forecast Office

57NM SSW Mayaguez PR

Marine Zone Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...

Today
East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: east 5 feet at 6 seconds and north 1 foot at 7 seconds. Scattered showers this morning. Isolated showers early this afternoon, then numerous showers with isolated thunderstorms late.
Tonight
East winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: southeast 5 feet at 7 seconds. Scattered showers after midnight.
Sunday
East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: east 5 feet at 7 seconds.
Sunday Night
East winds 15 to 20 knots with gusts up to 30 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave detail: east 5 feet at 7 seconds.
Monday
East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave detail: east 5 feet at 7 seconds.
Monday Night
East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave detail: east 6 feet at 7 seconds.
Tuesday
East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet.
Tuesday Night
East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet.
Wednesday
East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Scattered showers in the afternoon.
Wednesday Night
East winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Scattered showers.

winds and seas higher in and near thunderstorms.




Winds and seas higher in and near thunderstorms.
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326 AM AST Sat Jul 4 2026
 
 

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