National Weather Service Marine Forecast FZCA52 TJSJ

FZCA52 TJSJ 252015
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
415 PM AST Sun Oct 25 2026

Puerto Rico and the U.S. Virgin Islands Waters

Seas are provided as a range of the average height of the highest 1/3 of the waves...along with the occasional height of the average highest 10 percent of the waves.

AMZ700-260915
415 PM AST Sun Oct 25 2026

Synopsis for Puerto Rico and the U.S. Virgin Islands Waters

A surface high pressure over the central Atlantic will promote moderate to locally fresh east to southeasterly winds across the region through midweek. A long period northerly swell is expected to spread across the Atlantic waters and passages on Monday, building seas between 6 to 8 feet through Tuesday. Small craft advisories will be in effect for the Atlantic waters and the Mona Passage starting on Monday. Isolated thunderstorms are expected to develop mainly over the Caribbean waters, the Mona Passage, and offshore Atlantic waters during the next few days.

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AMZ711-260915
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N
415 PM AST Sun Oct 25 2026

SMALL CRAFT SHOULD EXERCISE CAUTION

SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY AFTERNOON

TONIGHT
Southeast winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at 6 seconds and north 4 feet at 12 seconds. Isolated showers early this evening, then scattered showers late this evening and overnight.

MONDAY
Southeast winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southeast 5 feet at 6 seconds and north 5 feet at 12 seconds. Scattered showers in the morning.

MONDAY NIGHT
Southeast winds 10 to 15 knots with gusts up to 25 knots. Seas 7 to 8 feet, occasionally to 10 feet. Wave Detail: North 6 feet at 12 seconds and east 4 feet at 7 seconds.

TUESDAY
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 6 to 7 feet, occasionally to 9 feet. Wave Detail: North 6 feet at 12 seconds and east 4 feet at 7 seconds. Scattered showers in the afternoon.

TUESDAY NIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: North 5 feet at 12 seconds and east 3 feet at 7 seconds. Scattered showers.

WEDNESDAY
East winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: North 5 feet at 11 seconds and east 3 feet at 8 seconds.

WEDNESDAY NIGHT
East winds 10 to 15 knots with gusts up to 20 knots. Seas around 5 feet, occasionally to 6 feet.

THURSDAY
East winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet.

THURSDAY NIGHT
East winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers.

FRIDAY
East winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers in the afternoon.

FRIDAY NIGHT
East winds 10 to 15 knots. Seas around 4 feet, occasionally to 5 feet.

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AMZ712-260915
Coastal Waters of Northern Puerto Rico out 10 NM
415 PM AST Sun Oct 25 2026

SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY AFTERNOON

TONIGHT
Southeast winds 5 to 10 knots. Seas around 5 feet, occasionally to 6 feet. Wave Detail: North 4 feet at 11 seconds and northeast 1 foot at 11 seconds. Isolated showers this evening. Numerous showers after midnight, then scattered showers late.

MONDAY
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: North 5 feet at 12 seconds and east 3 feet at 6 seconds. Scattered showers.

MONDAY NIGHT
Southeast winds 5 to 10 knots with gusts up to 20 knots. Seas 6 to 7 feet, occasionally to 9 feet. Wave Detail: North 6 feet at 12 seconds and east 4 feet at 7 seconds. Scattered showers after midnight.

TUESDAY
Southeast winds 5 to 10 knots, becoming east 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas 6 to 7 feet, occasionally to 9 feet. Wave Detail: North 6 feet at 12 seconds and east 4 feet at 7 seconds. Scattered showers in the afternoon.

TUESDAY NIGHT
Southeast winds 5 to 10 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: North 5 feet at 12 seconds and east 3 feet at 7 seconds.

WEDNESDAY
East winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: North 5 feet at 12 seconds and east 3 feet at 7 seconds. Scattered showers in the afternoon.

WEDNESDAY NIGHT
East winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots after midnight. Seas 5 to 6 feet, occasionally to 8 feet.

THURSDAY
East winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers in the afternoon.

THURSDAY NIGHT
East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet.

FRIDAY
East winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers.

FRIDAY NIGHT
East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet.

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AMZ716-260915
Coastal Waters from Cabo San Juan to the waters between Anegada Island and Virgin Gorda and North 10 NM
415 PM AST Sun Oct 25 2026

TONIGHT
Southeast winds around 15 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 3 feet at 5 seconds and north 3 feet at 11 seconds. Isolated showers early this evening, then scattered showers late this evening and overnight.

MONDAY
Southeast winds around 15 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 5 seconds and northeast 3 feet at 10 seconds. Scattered showers in the morning.

MONDAY NIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 3 feet at 6 seconds and north 3 feet at 10 seconds. Scattered showers after midnight.

TUESDAY
Southeast winds 10 to 15 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: North 5 feet at 12 seconds and east 3 feet at 6 seconds. Scattered showers.

TUESDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 5 feet at 12 seconds and east 2 feet at 7 seconds. Scattered showers after midnight.

WEDNESDAY
East winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 4 feet at 11 seconds and east 2 feet at 8 seconds.

WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet.

THURSDAY
East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers.

THURSDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers.

FRIDAY
East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers.

FRIDAY NIGHT
East winds around 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers.

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AMZ723-260915
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N
415 PM AST Sun Oct 25 2026

SMALL CRAFT SHOULD EXERCISE CAUTION

TONIGHT
Southeast winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 6 seconds and north 1 foot at 11 seconds. Isolated showers this evening, then scattered showers after midnight.

MONDAY
Southeast winds 10 to 15 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds and north 2 feet at 13 seconds.

MONDAY NIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 6 seconds and north 3 feet at 13 seconds. Scattered showers after midnight.

TUESDAY
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: North 4 feet at 13 seconds and east 3 feet at 7 seconds.

TUESDAY NIGHT
East winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: North 4 feet at 12 seconds and east 3 feet at 6 seconds. Scattered showers after midnight.

WEDNESDAY
East winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 3 feet at 5 seconds and north 3 feet at 12 seconds.

WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas around 4 feet, occasionally to 5 feet. Scattered showers.

THURSDAY
East winds 10 to 15 knots. Seas around 4 feet, occasionally to 5 feet. Scattered showers in the afternoon.

THURSDAY NIGHT
East winds 10 to 15 knots. Seas around 4 feet, occasionally to 5 feet. Scattered showers.

FRIDAY
East winds 10 to 15 knots. Seas around 4 feet, occasionally to 5 feet.

FRIDAY NIGHT
East winds around 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers.

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AMZ726-260915
Coastal waters east of Puerto Rico, around Vieques, and around and just north of Culebra and Saint John
415 PM AST Sun Oct 25 2026

TONIGHT
Southeast winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 6 seconds. Isolated showers this evening, then scattered showers after midnight.

MONDAY
Southeast winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. Scattered showers in the morning.

MONDAY NIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds.

TUESDAY
Southeast winds 10 to 15 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 3 feet at 6 seconds. Scattered showers.

TUESDAY NIGHT
East winds around 10 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 2 feet at 6 seconds. Scattered showers in the evening.

WEDNESDAY
East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 2 feet at 6 seconds. Scattered showers in the morning.

WEDNESDAY NIGHT
East winds around 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers.

THURSDAY
East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers.

THURSDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers.

FRIDAY
East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers.

FRIDAY NIGHT
East winds around 10 knots. Seas 2 to 3 feet. Scattered showers.

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AMZ733-260915
Caribbean waters of Puerto Rico from 10 NM to 17N, including the coastal waters of Saint Croix
415 PM AST Sun Oct 25 2026

TONIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. Scattered showers early this evening, then isolated showers late this evening. Scattered showers after midnight.

MONDAY
Southeast winds around 15 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 6 seconds. Scattered showers in the morning.

MONDAY NIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. Scattered showers after midnight.

TUESDAY
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 6 seconds. Scattered showers.

TUESDAY NIGHT
East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 7 seconds. Scattered showers.

WEDNESDAY
East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 7 seconds.

WEDNESDAY NIGHT
East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet.

THURSDAY
East winds 10 to 15 knots. Seas around 3 feet. Scattered showers.

THURSDAY NIGHT
East winds 10 to 15 knots. Seas around 3 feet. Scattered showers.

FRIDAY
East winds 10 to 15 knots. Seas around 3 feet. Scattered showers.

FRIDAY NIGHT
East winds 10 to 15 knots. Seas around 3 feet. Scattered showers.

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AMZ735-260915
Coastal Waters of Southern Puerto Rico out 10 NM
415 PM AST Sun Oct 25 2026

TONIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. Scattered showers this evening, then numerous showers after midnight. Scattered showers late.

MONDAY
Southeast winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. Scattered showers.

MONDAY NIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. Scattered showers.

TUESDAY
Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. Scattered showers in the morning.

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

WEDNESDAY
East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds.

WEDNESDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 3 feet.

THURSDAY
East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers in the morning.

THURSDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 3 feet.

FRIDAY
East winds 10 to 15 knots. Seas 2 to 3 feet.

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

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AMZ741-260915
Mona Passage Southward to 17N
415 PM AST Sun Oct 25 2026

SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY AFTERNOON

TONIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas around 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 6 seconds and north 3 feet at 11 seconds. Scattered showers early this evening, then numerous showers late this evening and early morning. Scattered showers late.

MONDAY
Southeast winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 4 feet at 6 seconds and north 3 feet at 12 seconds. Scattered showers.

MONDAY NIGHT
Southeast winds around 15 knots with gusts up to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southeast 4 feet at 6 seconds and north 4 feet at 12 seconds. Numerous showers, mainly in the evening.

TUESDAY
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: North 6 feet at 12 seconds and southeast 4 feet at 7 seconds. Scattered showers in the morning.

TUESDAY NIGHT
Southeast winds 10 to 15 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: North 5 feet at 12 seconds and southeast 4 feet at 6 seconds. Scattered showers.

WEDNESDAY
East winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: North 4 feet at 12 seconds and southeast 3 feet at 6 seconds. Scattered showers in the morning.

WEDNESDAY NIGHT
East winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet.

THURSDAY
East winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet.

THURSDAY NIGHT
East winds 10 to 15 knots. Seas around 4 feet, occasionally to 5 feet.

FRIDAY
East winds 10 to 15 knots. Seas around 4 feet, occasionally to 5 feet.

FRIDAY NIGHT
East winds 5 to 10 knots. Seas around 4 feet, occasionally to 5 feet.

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AMZ742-260915
Coastal Waters of Northwestern Puerto Rico out 10 NM
415 PM AST Sun Oct 25 2026

SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY EVENING THROUGH TUESDAY AFTERNOON

TONIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots with gusts up to 20 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: South 3 feet at 5 seconds and north 3 feet at 11 seconds. Numerous showers late this evening. Scattered showers after midnight. Isolated showers late.

MONDAY
Southeast winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 25 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: South 3 feet at 5 seconds.

MONDAY NIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: South 3 feet at 5 seconds.

TUESDAY
Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: North 6 feet at 12 seconds and south 3 feet at 5 seconds. Scattered showers in the afternoon.

TUESDAY NIGHT
East winds 5 to 10 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: North 5 feet at 12 seconds and south 3 feet at 4 seconds. Scattered showers in the evening.

WEDNESDAY
East winds around 5 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 5 feet at 12 seconds and south 2 feet at 5 seconds. Scattered showers in the afternoon.

WEDNESDAY NIGHT
East winds 5 to 10 knots. Seas 3 to 5 feet, occasionally to 6 feet.

THURSDAY
East winds 5 to 10 knots, becoming northeast in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet.

THURSDAY NIGHT
East winds around 5 knots. Seas 2 to 4 feet, occasionally to 5 feet.

FRIDAY
East winds 5 to 10 knots, becoming northeast in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers in the afternoon.

FRIDAY NIGHT
Northeast winds around 5 knots, becoming east after midnight. Seas 2 to 4 feet, occasionally to 5 feet.

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AMZ745-260915
Coastal Waters of Southwestern Puerto Rico out 10 NM
415 PM AST Sun Oct 25 2026

TONIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 3 feet at 6 seconds and north 3 feet at 11 seconds. Isolated showers early this evening, then numerous showers late this evening and early morning. Scattered showers late.

MONDAY
Southeast 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: Southeast 4 feet at 5 seconds and north 3 feet at 11 seconds.

MONDAY NIGHT
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 5 seconds and north 3 feet at 11 seconds.

TUESDAY
Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: North 4 feet at 12 seconds and southeast 3 feet at 6 seconds. Scattered showers.

TUESDAY NIGHT
East winds 5 to 10 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: South 3 feet at 5 seconds and north 3 feet at 12 seconds. Scattered showers.

WEDNESDAY
Southeast winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 12 seconds and south 2 feet at 5 seconds. Scattered showers in the afternoon.

WEDNESDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet.

THURSDAY
East winds 5 to 10 knots. Seas 2 to 3 feet.

THURSDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 3 feet.

FRIDAY
East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet.

FRIDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 3 feet.