National Weather Service Marine Forecast FZCA52 TJSJ

FZCA52 TJSJ 052010
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
410 PM AST Thu Mar 5 2026

Puerto Rico and the U.S. Virgin Islands Waters

AMZ700-060915
410 PM AST Thu Mar 5 2026

SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS

A series of high pressure systems across the Atlantic will promote fresh to locally strong east-northeasterly winds, resulting in choppy to rough seas across most regional waters and local Caribbean passages. Therefore, hazardous marine conditions will prevail through at least early next week. As a result, Small Craft Advisories remain in effect through at least Sunday evening, though these may be extended as conditions will probably continue hazardous next workweek as well. Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions.

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AMZ711-060915
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N
410 PM AST Thu Mar 5 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON

TONIGHT
East winds around 20 knots with gusts up to 30 knots. Seas around 8 feet. Wave Detail: East 8 feet at 10 seconds and north 3 feet at 9 seconds. Isolated showers early this evening, then scattered showers late this evening and overnight.

FRIDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 7 to 8 feet. Wave Detail: East 7 feet at 10 seconds and north 3 feet at 9 seconds. Scattered showers in the morning.

FRIDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 7 to 8 feet. Wave Detail: East 8 feet at 10 seconds and north 3 feet at 8 seconds. Scattered showers.

SATURDAY
East winds around 20 knots with gusts up to 30 knots. Seas around 8 feet. Wave Detail: East 8 feet at 9 seconds. Scattered showers in the morning.

SATURDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 7 to 8 feet. Wave Detail: East 8 feet at 9 seconds. Scattered showers after midnight.

SUNDAY
East winds around 20 knots with gusts up to 30 knots. Seas 7 to 8 feet. Wave Detail: East 8 feet at 9 seconds. Scattered showers in the morning.

SUNDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 7 to 8 feet.

MONDAY
East winds around 20 knots. Seas 7 to 8 feet. Scattered showers in the morning.

MONDAY NIGHT
East winds around 20 knots. Seas 7 to 8 feet. Scattered showers.

TUESDAY
East winds 15 to 20 knots. Seas around 7 feet. Scattered showers in the morning.

TUESDAY NIGHT
East winds 15 to 20 knots. Seas 6 to 7 feet. Scattered showers.

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AMZ712-060915
Coastal Waters of Northern Puerto Rico out 10 NM
410 PM AST Thu Mar 5 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON

TONIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: Northeast 7 feet at 10 seconds and north 2 feet at 9 seconds. Isolated showers early this evening, then scattered showers late this evening and overnight.

FRIDAY
East winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Seas 6 to 7 feet. Wave Detail: East 7 feet at 10 seconds and north 3 feet at 9 seconds. Scattered showers.

FRIDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: East 6 feet at 10 seconds and northeast 4 feet at 8 seconds. Scattered showers.

SATURDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: Northeast 7 feet at 9 seconds. Scattered showers.

SATURDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: Northeast 7 feet at 9 seconds. Scattered showers.

SUNDAY
East winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Seas 6 to 7 feet. Wave Detail: Northeast 7 feet at 9 seconds. Numerous showers, mainly in the morning.

SUNDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Scattered showers.

MONDAY
East winds 15 to 20 knots. Seas 6 to 7 feet. Scattered showers.

MONDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 5 to 7 feet. Scattered showers.

TUESDAY
East winds 15 to 20 knots. Seas 5 to 7 feet. Scattered showers.

TUESDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 5 to 7 feet. Scattered showers.

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AMZ716-060915
Coastal Waters from Cabo San Juan to the waters between Anegada Island and Virgin Gorda and North 10 NM
410 PM AST Thu Mar 5 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON

TONIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 5 to 6 feet. Wave Detail: East 6 feet at 7 seconds and east 1 foot at 10 seconds. Isolated showers this evening, then scattered showers after midnight.

FRIDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: East 5 feet at 7 seconds and northeast 2 feet at 10 seconds. Scattered showers.

FRIDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers.

SATURDAY
East winds around 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: East 6 feet at 7 seconds. Scattered showers.

SATURDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 5 to 6 feet. Wave Detail: East 6 feet at 9 seconds and east 3 feet at 5 seconds. Scattered showers.

SUNDAY
East winds around 20 knots with gusts up to 30 knots. Seas 5 to 6 feet. Wave Detail: Northeast 6 feet at 8 seconds and east 3 feet at 5 seconds. Scattered showers.

SUNDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 4 to 6 feet. Scattered showers.

MONDAY
East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered showers.

MONDAY NIGHT
East winds around 20 knots. Seas 4 to 6 feet. Scattered showers.

TUESDAY
East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered showers in the afternoon.

TUESDAY NIGHT
East winds 15 to 20 knots. Seas 4 to 5 feet. Scattered showers.

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AMZ723-060915
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N
410 PM AST Thu Mar 5 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON

TONIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: Northeast 6 feet at 7 seconds and east 6 feet at 10 seconds. Isolated showers this evening, then scattered showers after midnight.

FRIDAY
East winds around 20 knots with gusts up to 30 knots. Seas around 7 feet. Wave Detail: East 7 feet at 7 seconds and northeast 5 feet at 10 seconds.

FRIDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 6 to 8 feet. Wave Detail: Northeast 7 feet at 10 seconds and east 6 feet at 6 seconds. Scattered showers.

SATURDAY
East winds around 20 knots with gusts up to 30 knots. Seas 7 to 8 feet. Wave Detail: Northeast 7 feet at 9 seconds. Scattered showers in the morning.

SATURDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas around 7 feet. Scattered showers after midnight.

SUNDAY
East winds around 20 knots with gusts up to 30 knots. Seas around 7 feet. Wave Detail: Northeast 6 feet at 8 seconds. Scattered showers in the morning.

SUNDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas around 7 feet. Scattered showers.

MONDAY
East winds 15 to 20 knots. Seas 6 to 7 feet. Scattered showers in the morning.

MONDAY NIGHT
East winds around 20 knots. Seas 6 to 7 feet. Scattered showers.

TUESDAY
East winds 15 to 20 knots. Seas 6 to 7 feet. Scattered showers.

TUESDAY NIGHT
East winds 15 to 20 knots. Seas around 6 feet. Scattered showers.

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AMZ726-060915
Coastal waters east of Puerto Rico, around Vieques, and around and just north of Culebra and Saint John
410 PM AST Thu Mar 5 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON

TONIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers early this evening, then isolated showers late this evening. Scattered showers after midnight.

FRIDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers.

FRIDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 6 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers.

SATURDAY
East winds 20 to 25 knots, diminishing to 15 to 20 knots in the afternoon. Seas 5 to 7 feet. Wave Detail: East 6 feet at 6 seconds. Scattered showers.

SATURDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 6 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers.

SUNDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 6 feet. Wave Detail: East 6 feet at 7 seconds. Scattered showers.

SUNDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 6 feet. Scattered showers.

MONDAY
East winds 15 to 20 knots. Seas 5 to 6 feet. Scattered showers.

MONDAY NIGHT
East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered showers.

TUESDAY
East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered showers.

TUESDAY NIGHT
East winds 15 to 20 knots. Seas 4 to 5 feet. Scattered showers.

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AMZ733-060915
Caribbean waters of Puerto Rico from 10 NM to 17N, including the coastal waters of Saint Croix
410 PM AST Thu Mar 5 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON

TONIGHT
East winds around 20 knots with gusts up to 30 knots. Seas around 7 feet. Wave Detail: East 6 feet at 7 seconds and east 4 feet at 10 seconds. Isolated showers this evening, then scattered showers after midnight.

FRIDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: East 6 feet at 7 seconds and east 4 feet at 10 seconds.

FRIDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: East 5 feet at 7 seconds and east 5 feet at 10 seconds. Scattered showers after midnight.

SATURDAY
East winds 20 to 25 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: East 6 feet at 8 seconds. Scattered showers.

SATURDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers in the evening.

SUNDAY
East winds around 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers.

SUNDAY NIGHT
East winds around 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Scattered showers.

MONDAY
East winds around 20 knots. Seas 6 to 7 feet. Scattered showers in the morning.

MONDAY NIGHT
East winds around 20 knots. Seas around 6 feet. Scattered showers.

TUESDAY
East winds 15 to 20 knots. Seas around 6 feet. Scattered showers.

TUESDAY NIGHT
East winds 15 to 20 knots. Seas 5 to 6 feet. Scattered showers.

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AMZ735-060915
Coastal Waters of Southern Puerto Rico out 10 NM
410 PM AST Thu Mar 5 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT

TONIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots late. Gusts up to 30 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers early this evening, then isolated showers late this evening and overnight.

FRIDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 7 seconds.

FRIDAY NIGHT
East winds 15 to 20 knots, becoming northeast 10 to 15 knots after midnight. Gusts up to 30 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers after midnight.

SATURDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 4 to 6 feet. Wave Detail: East 6 feet at 7 seconds. Scattered showers in the morning.

SATURDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Gusts up to 30 knots. Seas 4 to 6 feet. Wave Detail: East 6 feet at 7 seconds. Scattered showers in the evening.

SUNDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 4 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. Scattered showers.

MONDAY
East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered showers in the morning.

MONDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 4 to 6 feet. Scattered showers.

TUESDAY
East winds 15 to 20 knots. Seas 3 to 5 feet. Scattered showers in the morning.

TUESDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 3 to 5 feet. Scattered showers.

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AMZ741-060915
Mona Passage Southward to 17N
410 PM AST Thu Mar 5 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON

TONIGHT
East winds 15 to 20 knots, increasing to 20 to 25 knots late this evening and early morning, then diminishing to 15 to 20 knots late. Seas 5 to 7 feet. Wave Detail: Southeast 6 feet at 7 seconds and northeast 4 feet at 8 seconds. Scattered showers, mainly this evening.

FRIDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: Southeast 6 feet at 7 seconds and northeast 3 feet at 8 seconds. Scattered showers in the afternoon.

FRIDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: Southeast 6 feet at 7 seconds and northeast 3 feet at 8 seconds. Scattered showers in the evening.

SATURDAY
East winds 15 to 20 knots, increasing to 20 to 25 knots in the afternoon. Seas 5 to 7 feet. Wave Detail: Southeast 6 feet at 7 seconds and northeast 4 feet at 8 seconds. Scattered showers.

SATURDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: Southeast 6 feet at 7 seconds and northeast 3 feet at 8 seconds.

SUNDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Wave Detail: Southeast 6 feet at 7 seconds and north 3 feet at 8 seconds. Scattered showers in the afternoon.

SUNDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 7 feet. Scattered showers.

MONDAY
East winds 15 to 20 knots. Seas 5 to 7 feet. Scattered showers in the morning.

MONDAY NIGHT
East winds 15 to 20 knots. Seas 5 to 7 feet. Scattered showers.

TUESDAY
East winds 15 to 20 knots. Seas 5 to 6 feet.

TUESDAY NIGHT
East winds 15 to 20 knots. Seas 5 to 6 feet. Scattered showers.

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AMZ742-060915
Coastal Waters of Northwestern Puerto Rico out 10 NM
410 PM AST Thu Mar 5 2026

SMALL CRAFT SHOULD EXERCISE CAUTION

TONIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 3 to 5 feet. Wave Detail: Northeast 5 feet at 7 seconds and southeast 2 feet at 7 seconds. Scattered showers.

FRIDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 3 to 5 feet. Wave Detail: Northeast 5 feet at 8 seconds and southeast 2 feet at 6 seconds. Numerous showers in the afternoon.

FRIDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas 3 to 5 feet. Wave Detail: Northeast 5 feet at 8 seconds and southeast 2 feet at 7 seconds.

SATURDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas 3 to 5 feet. Wave Detail: Northeast 5 feet at 8 seconds and southeast 2 feet at 6 seconds. Numerous showers in the afternoon.

SATURDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Gusts up to 30 knots. Seas 3 to 5 feet. Wave Detail: Northeast 5 feet at 8 seconds and southeast 2 feet at 7 seconds.

SUNDAY
East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 5 feet. Wave Detail: Southeast 1 foot at 7 seconds. Numerous showers in the afternoon.

SUNDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Gusts up to 30 knots. Seas 3 to 5 feet.

MONDAY
East winds 10 to 15 knots. Seas 3 to 5 feet. Numerous showers in the afternoon.

MONDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 3 to 5 feet. Scattered showers.

TUESDAY
East winds 10 to 15 knots. Seas 2 to 4 feet. Scattered showers in the afternoon.

TUESDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 3 to 5 feet. Scattered showers.

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AMZ745-060915
Coastal Waters of Southwestern Puerto Rico out 10 NM
410 PM AST Thu Mar 5 2026

SMALL CRAFT SHOULD EXERCISE CAUTION

TONIGHT
East winds 15 to 20 knots with gusts up to 30 knots, diminishing to 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: North 3 feet at 6 seconds. Scattered showers early this evening, then isolated showers late this evening and overnight.

FRIDAY
East winds 5 to 10 knots with gusts up to 20 knots, becoming southeast 15 to 20 knots with gusts up to 30 knots in the afternoon. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds and northwest 1 foot at 6 seconds. Scattered showers in the afternoon.

FRIDAY NIGHT
East winds 15 to 20 knots with gusts up to 25 knots, becoming northeast 5 to 10 knots after midnight. Seas 2 to 4 feet. Wave Detail: East 3 feet at 6 seconds and north 1 foot at 8 seconds.

SATURDAY
East winds 5 to 10 knots, increasing to 15 to 20 knots with gusts up to 30 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 7 seconds and northwest 1 foot at 6 seconds. Scattered showers in the afternoon.

SATURDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 4 feet. Wave Detail: East 3 feet at 6 seconds and north 1 foot at 7 seconds.

SUNDAY
East winds 5 to 10 knots, increasing to 15 to 20 knots with gusts up to 25 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 7 seconds. Scattered showers in the afternoon.

SUNDAY NIGHT
East winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 4 feet.

MONDAY
East winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Scattered showers in the afternoon.

MONDAY NIGHT
East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 4 feet.

TUESDAY
East winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Scattered showers in the afternoon.

TUESDAY NIGHT
East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet.