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Last Update: 328 AM AST Mon May 18 2026

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San Juan, PR Local Forecast Office

8NM SSE Ponce PR

Marine Zone Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...

Today
East winds 10 to 15 knots, increasing to 15 to 20 knots late this morning and early afternoon, then diminishing to 10 to 15 knots late. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: east 5 feet at 7 seconds. Scattered showers early this morning, then isolated showers late this morning and afternoon.
Tonight
East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: east 5 feet at 7 seconds.
Tuesday
East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: east 5 feet at 7 seconds.
Tuesday Night
East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave detail: east 4 feet at 7 seconds. Scattered showers.
Wednesday
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. Scattered showers in the morning.
Wednesday Night
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. Scattered showers.
Thursday
East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Scattered showers in the morning.
Thursday Night
East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet.
Friday
East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet.
Friday Night
East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet.



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328 AM AST Mon May 18 2026
 
 

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