Last Update: 423 PM AST Fri Sep 18 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. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 6 seconds and north 1 foot at 9 seconds. Scattered showers early this evening.
Saturday
Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: south 2 feet at 6 seconds and north 2 feet at 8 seconds.
Saturday Night
East winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 6 seconds and north 2 feet at 8 seconds. Scattered showers in the evening.
Sunday
Southeast winds 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 6 seconds and north 1 foot at 8 seconds.
Sunday Night
East winds 5 to 10 knots. Seas around 2 feet. Wave detail: southeast 2 feet at 5 seconds and north 1 foot at 7 seconds.
Monday
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 5 seconds and north 1 foot at 7 seconds. Scattered showers in the afternoon.
Monday Night
East winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots after midnight. Seas around 2 feet.
Tuesday
East winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet.
Tuesday Night
East winds 5 to 10 knots. Seas 2 to 3 feet.
Wednesday
East winds 5 to 10 knots. Seas around 2 feet.
Wednesday Night
East winds 5 to 10 knots. Seas around 2 feet.



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423 PM AST Fri Sep 18 2026
 
 

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