National Weather Service Marine Forecast FZCA52 TJSJ

FZCA52 TJSJ 120800
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
400 AM AST Thu Feb 12 2026

Puerto Rico and the U.S. Virgin Islands Waters

AMZ700-122015
400 AM AST Thu Feb 12 2026

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

A surface high pressure over the western Atlantic will promote moderate to fresh northeasterly winds through this evening, gradually veering to the east and weakening during the day. A weak frontal boundary will linger over the region during the next few days, promoting cloudiness and light to moderate showers. A subsiding, long period north-northwest swell will continue to bring hazardous seas across the Atlantic waters and passages through at least early Thursday. Small Craft Advisories are in effect for most local waters exposed to the NW swell.

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AMZ711-122015
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N
400 AM AST Thu Feb 12 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON

TODAY
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas around 6 feet. Wave Detail: North 6 feet at 11 seconds and east 3 feet at 6 seconds. Numerous showers until late afternoon, then scattered showers late.

TONIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots after midnight. Seas around 5 feet. Wave Detail: North 5 feet at 11 seconds and east 3 feet at 6 seconds. Numerous showers.

FRIDAY
Southeast winds 5 to 10 knots. Seas 4 to 5 feet. Wave Detail: North 4 feet at 10 seconds and east 2 feet at 6 seconds. Numerous showers.

FRIDAY NIGHT
East winds 5 to 10 knots. Seas around 4 feet. Wave Detail: North 3 feet at 11 seconds and east 2 feet at 6 seconds. Scattered showers in the evening.

SATURDAY
East winds 5 to 10 knots with gusts up to 20 knots. Seas around 4 feet. Wave Detail: North 3 feet at 10 seconds and east 2 feet at 7 seconds.

SATURDAY NIGHT
Northeast winds 10 to 15 knots with gusts up to 25 knots. Seas 4 to 5 feet. Wave Detail: East 4 feet at 5 seconds and north 3 feet at 10 seconds. Scattered showers.

SUNDAY
Northeast winds around 15 knots. Seas 5 to 7 feet. Scattered showers in the morning.

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

MONDAY
East winds 10 to 15 knots. Seas 5 to 6 feet.

MONDAY NIGHT
East winds 10 to 15 knots. Seas around 5 feet.

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AMZ712-122015
Coastal Waters of Northern Puerto Rico out 10 NM
400 AM AST Thu Feb 12 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON

TODAY
East winds 5 to 10 knots. Seas around 6 feet. Wave Detail: North 6 feet at 11 seconds. Scattered showers early this morning, then isolated showers late this morning. Numerous showers this afternoon.

TONIGHT
Southeast winds 5 to 10 knots, diminishing to around 5 knots after midnight. Seas around 5 feet. Wave Detail: North 5 feet at 11 seconds and east 2 feet at 6 seconds. Scattered showers.

FRIDAY
Southeast winds around 5 knots, becoming east in the afternoon. Seas 4 to 5 feet. Wave Detail: North 4 feet at 11 seconds and east 2 feet at 6 seconds. Scattered showers.

FRIDAY NIGHT
East winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: North 3 feet at 11 seconds and east 2 feet at 6 seconds.

SATURDAY
East winds 5 to 10 knots, becoming northeast 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas 3 to 4 feet. Wave Detail: North 3 feet at 14 seconds and east 2 feet at 5 seconds.

SATURDAY NIGHT
Northeast winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet. Wave Detail: Northeast 3 feet at 5 seconds and north 3 feet at 9 seconds. Scattered showers in the evening.

SUNDAY
East winds 10 to 15 knots. Seas 4 to 6 feet. Scattered showers.

SUNDAY NIGHT
East winds 10 to 15 knots. Seas 5 to 6 feet.

MONDAY
East winds 10 to 15 knots. Seas around 5 feet. Scattered showers in the morning.

MONDAY NIGHT
East winds 10 to 15 knots, becoming southeast 5 to 10 knots after midnight. Seas 4 to 5 feet. Scattered showers.

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AMZ716-122015
Coastal Waters from Cabo San Juan to the waters between Anegada Island and Virgin Gorda and North 10 NM
400 AM AST Thu Feb 12 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON

TODAY
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 7 feet. Wave Detail: Northeast 7 feet at 11 seconds and east 2 feet at 5 seconds. Numerous showers.

TONIGHT
Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: Northeast 5 feet at 11 seconds and southeast 2 feet at 5 seconds. Numerous showers.

FRIDAY
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 5 feet. Wave Detail: Northeast 4 feet at 11 seconds and southeast 2 feet at 5 seconds. Numerous showers.

FRIDAY NIGHT
East winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at 10 seconds and east 2 feet at 5 seconds.

SATURDAY
East winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: North 3 feet at 10 seconds and northwest 3 feet at 11 seconds.

SATURDAY NIGHT
Northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at 4 seconds and northwest 3 feet at 10 seconds. Scattered showers in the evening.

SUNDAY
Northeast winds around 15 knots. Seas 3 to 5 feet. Scattered showers.

SUNDAY NIGHT
East winds around 15 knots. Seas 4 to 6 feet.

MONDAY
East winds around 15 knots. Seas 4 to 5 feet.

MONDAY NIGHT
East winds around 15 knots. Seas 4 to 5 feet. Scattered showers.

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AMZ723-122015
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N
400 AM AST Thu Feb 12 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM AST EARLY THIS MORNING

TODAY
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 6 feet. Wave Detail: East 4 feet at 6 seconds and north 4 feet at 12 seconds. Scattered showers early this morning, then numerous showers late this morning and afternoon.

TONIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds and north 3 feet at 11 seconds. Scattered showers.

FRIDAY
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds and north 3 feet at 11 seconds. Scattered showers in the morning.

FRIDAY NIGHT
East winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds and north 2 feet at 11 seconds.

SATURDAY
East winds 5 to 10 knots. Seas around 3 feet. Wave Detail: Southeast 2 feet at 7 seconds and north 2 feet at 12 seconds.

SATURDAY NIGHT
Northeast winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. Wave Detail: East 3 feet at 6 seconds and north 2 feet at 13 seconds.

SUNDAY
East winds 10 to 15 knots. Seas 3 to 4 feet. Scattered showers.

SUNDAY NIGHT
East winds around 15 knots. Seas 4 to 5 feet.

MONDAY
East winds 15 to 20 knots. Seas 4 to 5 feet.

MONDAY NIGHT
East winds around 15 knots. Seas 4 to 5 feet.

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AMZ726-122015
Coastal waters east of Puerto Rico, around Vieques, and around and just north of Culebra and Saint John
400 AM AST Thu Feb 12 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM AST EARLY THIS MORNING

TODAY
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 6 seconds and northeast 1 foot at 11 seconds. Numerous showers.

TONIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots after midnight. Seas 3 to 5 feet. Wave Detail: Southeast 3 feet at 6 seconds. Numerous showers.

FRIDAY
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds. Numerous showers, mainly in the morning.

FRIDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds.

SATURDAY
East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds.

SATURDAY NIGHT
Northeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds.

SUNDAY
Northeast winds 10 to 15 knots. Seas 3 to 4 feet. Scattered showers.

SUNDAY NIGHT
East winds around 15 knots. Seas 3 to 5 feet.

MONDAY
East winds 10 to 15 knots. Seas 3 to 4 feet. Scattered showers in the morning.

MONDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 4 feet. Scattered showers.

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AMZ733-122015
Caribbean waters of Puerto Rico from 10 NM to 17N, including the coastal waters of Saint Croix
400 AM AST Thu Feb 12 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM AST EARLY THIS MORNING

TODAY
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds and northwest 1 foot at 11 seconds. Isolated thunderstorms early this morning. Numerous showers.

TONIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet. Wave Detail: Southeast 4 feet at 6 seconds and northwest 1 foot at 11 seconds. Numerous showers in the evening.

FRIDAY
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: East 4 feet at 6 seconds.

FRIDAY NIGHT
East winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 6 seconds.

SATURDAY
East winds 5 to 10 knots. Seas around 3 feet. Wave Detail: East 3 feet at 7 seconds.

SATURDAY NIGHT
Northeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 6 seconds.

SUNDAY
East winds 15 to 20 knots. Seas 3 to 4 feet. Scattered showers in the afternoon.

SUNDAY NIGHT
East winds 15 to 20 knots. Seas around 4 feet.

MONDAY
East winds around 15 knots. Seas around 4 feet.

MONDAY NIGHT
East winds around 15 knots. Seas around 4 feet.

Winds and seas higher in and near thunderstorms.

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AMZ735-122015
Coastal Waters of Southern Puerto Rico out 10 NM
400 AM AST Thu Feb 12 2026

TODAY
East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: East 4 feet at 7 seconds. Numerous showers until late afternoon, then scattered showers late.

TONIGHT
East winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds. Numerous showers, mainly in the evening.

FRIDAY
East winds 5 to 10 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds.

FRIDAY NIGHT
East winds 5 to 10 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds.

SATURDAY
East winds 5 to 10 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 7 seconds.

SATURDAY NIGHT
Northeast winds 5 to 10 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds.

SUNDAY
Northeast winds 10 to 15 knots, becoming east 15 to 20 knots in the afternoon. Seas 2 to 3 feet.

SUNDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 4 feet.

MONDAY
East winds 10 to 15 knots. Seas 3 to 4 feet.

MONDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 4 feet.

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AMZ741-122015
Mona Passage Southward to 17N
400 AM AST Thu Feb 12 2026

SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON

TODAY
East winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 7 feet. Wave Detail: North 6 feet at 12 seconds and east 5 feet at 7 seconds. Scattered showers early this morning, then numerous showers late this morning and afternoon.

TONIGHT
East winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 6 feet. Wave Detail: North 5 feet at 11 seconds and east 4 feet at 7 seconds. Numerous showers, mainly in the evening.

FRIDAY
East winds 10 to 15 knots, becoming southeast 5 to 10 knots in the afternoon. Seas 4 to 5 feet. Wave Detail: East 4 feet at 7 seconds and north 4 feet at 11 seconds. Scattered showers in the afternoon.

FRIDAY NIGHT
East winds 5 to 10 knots. Seas 4 to 5 feet. Wave Detail: Southeast 3 feet at 7 seconds and north 3 feet at 10 seconds.

SATURDAY
Northeast winds 5 to 10 knots. Seas around 4 feet. Wave Detail: East 3 feet at 7 seconds and north 3 feet at 10 seconds. Scattered showers in the afternoon.

SATURDAY NIGHT
Northeast winds 10 to 15 knots with gusts up to 25 knots. Seas 4 to 5 feet. Wave Detail: East 4 feet at 7 seconds and north 2 feet at 10 seconds.

SUNDAY
East winds 10 to 15 knots. Seas 4 to 5 feet.

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

MONDAY
East winds 15 to 20 knots. Seas around 5 feet.

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

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AMZ742-122015
Coastal Waters of Northwestern Puerto Rico out 10 NM
400 AM AST Thu Feb 12 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM AST EARLY THIS MORNING

TODAY
East winds 5 to 10 knots, becoming southeast late this morning and afternoon. Seas 4 to 6 feet. Wave Detail: North 6 feet at 12 seconds and southeast 1 foot at 6 seconds. Isolated showers late this morning and early afternoon. Scattered showers late.

TONIGHT
East winds around 5 knots. Seas 3 to 5 feet. Wave Detail: North 5 feet at 11 seconds and southeast 1 foot at 7 seconds. Scattered showers in the evening.

FRIDAY
East winds around 5 knots, becoming north in the afternoon. Seas 3 to 5 feet. Wave Detail: North 4 feet at 11 seconds and southeast 1 foot at 6 seconds. Numerous showers in the afternoon.

FRIDAY NIGHT
Northeast winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: North 4 feet at 11 seconds and south 1 foot at 6 seconds. Scattered showers in the evening.

SATURDAY
Northeast winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: North 3 feet at 11 seconds and southeast 1 foot at 7 seconds. Scattered showers in the afternoon.

SATURDAY NIGHT
Northeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 4 feet. Wave Detail: Northeast 3 feet at 5 seconds and north 2 feet at 10 seconds.

SUNDAY
Northeast winds 10 to 15 knots. Seas 3 to 5 feet. Numerous showers in the afternoon.

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

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

MONDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 4 feet.

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AMZ745-122015
Coastal Waters of Southwestern Puerto Rico out 10 NM
400 AM AST Thu Feb 12 2026

SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM AST EARLY THIS MORNING

TODAY
East winds around 5 knots, becoming southeast 10 to 15 knots with gusts up to 20 knots late this morning and early afternoon, then diminishing to 5 to 10 knots with gusts up to 20 knots late. Seas 3 to 5 feet. Wave Detail: Northwest 5 feet at 11 seconds and south 2 feet at 7 seconds. Isolated showers until late afternoon, then scattered showers late.

TONIGHT
East winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: Northwest 3 feet at 11 seconds and southeast 2 feet at 7 seconds. Scattered showers in the evening.

FRIDAY
Southeast winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: Northwest 3 feet at 11 seconds and south 2 feet at 7 seconds.

FRIDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 7 seconds and northwest 2 feet at 10 seconds.

SATURDAY
Northeast winds around 5 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 7 seconds and north 2 feet at 10 seconds.

SATURDAY NIGHT
Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 7 seconds and northwest 2 feet at 10 seconds.

SUNDAY
East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers in the afternoon.

SUNDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 4 feet.

MONDAY
East winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 4 feet. Numerous 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.