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Last Update: 340 AM AST Tue Aug 11 2026

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San Juan, PR Local Forecast Office

12NM SW Mayaguez PR

Marine Zone Forecast


Today
Northeast winds 5 to 10 knots with gusts up to 20 knots, becoming southeast late this morning, then increasing to 10 to 15 knots with gusts up to 20 knots early this afternoon, becoming east 5 to 10 knots with gusts up to 20 knots late. Seas around 2 feet. Wave detail: south 1 foot at 5 seconds. Scattered showers with isolated thunderstorms early this afternoon. Numerous showers with isolated thunderstorms late.
Tonight
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 and north 1 foot at 5 seconds. Scattered showers in the evening.
Wednesday
Southeast winds 10 to 15 knots with gusts up to 25 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 5 seconds and north 1 foot at 5 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 and north 1 foot at 5 seconds.
Thursday
East winds 15 to 20 knots with gusts up to 30 knots. Seas 2 to 3 feet. Wave detail: southeast 3 feet at 5 seconds.
Thursday Night
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Gusts up to 30 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave detail: southeast 3 feet at 5 seconds.
Friday
East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet.
Friday Night
East winds 15 to 20 knots, diminishing to 5 to 10 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet.
Saturday
East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers in the afternoon.
Saturday Night
Northeast winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet.

winds and seas higher in and near thunderstorms.




Winds and seas higher in and near thunderstorms.
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340 AM AST Tue Aug 11 2026
 
 

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