


Coastal Waters Forecast
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
012 FZCA52 TJSJ 062023 CWFSJU Coastal Waters Forecast National Weather Service San Juan PR 423 PM AST Mon Oct 6 2025 Puerto Rico and the U.S. Virgin Islands Waters AMZ700-070915- 423 PM AST Mon Oct 6 2025 .SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS... A long-period northeasterly swell will continue to spread across the local Atlantic waters and passages through at least Tuesday. Therefore, marine and coastal conditions will continue deteriorated through mid-week. A tropical wave will approach the region today, increasing the frequency of showers and thunderstorms across the regional waters, particularly during the afternoon hours. $$ AMZ711-070915- Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- 423 PM AST Mon Oct 6 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY MORNING... .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 8 feet, subsiding to 6 to 7 feet after midnight. Wave Detail: Northeast 7 feet at 14 seconds and east 3 feet at 8 seconds, becoming northeast 6 feet at 13 seconds and east 3 feet at 7 seconds. Isolated thunderstorms. Scattered showers this evening, then numerous showers after midnight. .TUESDAY...East winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots in the afternoon. Seas 6 to 7 feet. Wave Detail: Northeast 6 feet at 13 seconds and east 3 feet at 7 seconds. Numerous showers. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 5 feet. Wave Detail: Northeast 4 feet at 12 seconds and east 3 feet at 7 seconds. .WEDNESDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 5 feet. Wave Detail: East 4 feet at 7 seconds and northeast 4 feet at 11 seconds. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots after midnight. Seas 4 to 5 feet. Wave Detail: East 4 feet at 8 seconds and northeast 3 feet at 10 seconds. .THURSDAY...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas around 4 feet. Wave Detail: East 4 feet at 8 seconds and northeast 1 foot at 13 seconds. .THURSDAY NIGHT...East winds 5 to 10 knots. Seas 4 to 5 feet. .FRIDAY...Southeast winds around 5 knots. Seas 4 to 6 feet, building to 5 to 8 feet in the afternoon. Scattered showers in the afternoon. .FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 6 to 9 feet. Scattered showers. .SATURDAY...Southeast winds 5 to 10 knots. Seas 6 to 8 feet. Scattered showers. .SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 5 to 7 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ712-070915- Coastal Waters of Northern Puerto Rico out 10 NM- 423 PM AST Mon Oct 6 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY MORNING... .TONIGHT...East winds 5 to 10 knots. Seas 6 to 8 feet. Wave Detail: Northeast 6 feet at 14 seconds. Isolated showers early this evening, then scattered showers late this evening. Numerous showers with isolated thunderstorms after midnight. .TUESDAY...East winds 5 to 10 knots. Seas around 6 feet. Wave Detail: Northeast 6 feet at 13 seconds and east 2 feet at 7 seconds. Numerous showers. .TUESDAY NIGHT...Southeast winds 5 to 10 knots, diminishing to around 5 knots after midnight. Seas 4 to 5 feet. Wave Detail: Northeast 5 feet at 12 seconds and east 2 feet at 6 seconds. Scattered showers in the evening. .WEDNESDAY...Southeast winds 5 to 10 knots, becoming east 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas around 4 feet. Wave Detail: Northeast 4 feet at 11 seconds and east 3 feet at 6 seconds. Scattered showers in the afternoon. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots, diminishing to around 5 knots after midnight. Seas around 4 feet. Wave Detail: Northeast 4 feet at 8 seconds and northeast 4 feet at 11 seconds. Scattered showers. .THURSDAY...Southeast winds around 5 knots, becoming east in the afternoon. Seas 3 to 4 feet. Wave Detail: Northeast 4 feet at 8 seconds. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds 5 to 10 knots, becoming southeast after midnight. Seas 3 to 4 feet. .FRIDAY...East winds around 5 knots. Seas around 3 feet. Scattered showers in the afternoon. .FRIDAY NIGHT...Southeast winds around 5 knots. Seas 3 to 5 feet. .SATURDAY...Southeast winds 5 to 10 knots. Seas 5 to 7 feet. Scattered showers. .SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 4 to 6 feet. Winds and seas higher in and near thunderstorms. $$ AMZ716-070915- Coastal Waters from Cabo San Juan to the waters between Anegada Island and Virgin Gorda and North 10 NM- 423 PM AST Mon Oct 6 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TONIGHT...East winds 10 to 15 knots. Seas 5 to 7 feet. Wave Detail: Northeast 6 feet at 14 seconds and east 2 feet at 5 seconds. Isolated thunderstorms. Scattered showers this evening, then numerous showers after midnight. .TUESDAY...East winds around 10 knots. Seas 4 to 6 feet. Wave Detail: Northeast 5 feet at 13 seconds and east 2 feet at 6 seconds. Numerous showers, mainly in the morning. .TUESDAY NIGHT...Southeast winds around 10 knots. Seas 3 to 5 feet. Wave Detail: Northeast 4 feet at 12 seconds and east 2 feet at 6 seconds. Scattered showers. .WEDNESDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: Northeast 4 feet at 11 seconds and southeast 3 feet at 5 seconds. Scattered showers. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds and northeast 3 feet at 11 seconds. Scattered showers. .THURSDAY...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas 2 to 4 feet. Wave Detail: East 3 feet at 8 seconds. Scattered showers. .THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet. Scattered showers. .FRIDAY...Southeast winds around 5 knots. Seas 2 to 4 feet. Scattered showers. .FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 5 feet. Scattered showers. .SATURDAY...Southeast winds around 10 knots. Seas 3 to 5 feet. Scattered showers. .SATURDAY NIGHT...Southeast winds around 10 knots. Seas 3 to 4 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ723-070915- Anegada Passage east of Virgin Gorda and Saint Croix south to 17N- 423 PM AST Mon Oct 6 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT... .TONIGHT...East winds around 10 knots. Seas 6 to 7 feet. Wave Detail: Northeast 6 feet at 14 seconds. Isolated thunderstorms. Scattered showers early this evening, then numerous showers late this evening and overnight. .TUESDAY...Southeast winds around 10 knots. Seas 4 to 6 feet. Wave Detail: Northeast 5 feet at 13 seconds and east 2 feet at 4 seconds. Numerous showers, mainly in the morning. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 4 feet. Wave Detail: Northeast 4 feet at 12 seconds and southeast 2 feet at 4 seconds. .WEDNESDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet. Wave Detail: Southeast 4 feet at 5 seconds and northeast 3 feet at 11 seconds. Scattered showers. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 5 feet. Wave Detail: East 4 feet at 6 seconds and northeast 3 feet at 11 seconds. Scattered showers. .THURSDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet. Wave Detail: Southeast 4 feet at 6 seconds and northeast 2 feet at 10 seconds. Scattered showers. .THURSDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet. Scattered showers. .FRIDAY...Southeast winds around 5 knots. Seas 5 to 7 feet. Scattered showers. .FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 5 to 7 feet. Scattered showers. .SATURDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Scattered showers. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ726-070915- Coastal waters east of Puerto Rico, around Vieques, and around and just north of Culebra and Saint John- 423 PM AST Mon Oct 6 2025 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...Northeast winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: East 3 feet at 5 seconds and northeast 2 feet at 13 seconds. Scattered showers this evening. Isolated thunderstorms late this evening and overnight. Numerous showers after midnight. .TUESDAY...East winds 5 to 10 knots. Seas 3 to 5 feet. Wave Detail: East 2 feet at 6 seconds and northeast 2 feet at 13 seconds. Numerous showers. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: Southeast 2 feet at 6 seconds and northeast 2 feet at 12 seconds. Scattered showers. .WEDNESDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. Scattered showers. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots, becoming east 5 to 10 knots after midnight. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 5 seconds. Scattered showers. .THURSDAY...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers. .THURSDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. .FRIDAY...Southeast winds around 5 knots. Seas 2 to 3 feet, building to 3 to 5 feet in the afternoon. Scattered showers. .FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 5 feet. Scattered showers. .SATURDAY...Southeast winds around 10 knots. Seas 3 to 5 feet. Scattered showers. .SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ733-070915- Caribbean waters of Puerto Rico from 10 NM to 17N, including the coastal waters of Saint Croix- 423 PM AST Mon Oct 6 2025 .TONIGHT...Northeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 5 seconds and northeast 1 foot at 13 seconds. Isolated thunderstorms. Scattered showers early this evening, then numerous showers late this evening and overnight. .TUESDAY...East winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 5 seconds and northeast 1 foot at 13 seconds. Numerous showers. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 6 seconds and northeast 1 foot at 13 seconds. .WEDNESDAY...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds and northeast 1 foot at 12 seconds. .WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers. .THURSDAY...East winds around 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers. .THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet. Scattered showers. .FRIDAY...Southeast winds around 5 knots. Seas 2 to 3 feet. Scattered showers in the afternoon. .FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Scattered showers. .SATURDAY...Southeast winds around 10 knots. Seas 3 to 4 feet. Scattered showers in the morning. .SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ735-070915- Coastal Waters of Southern Puerto Rico out 10 NM- 423 PM AST Mon Oct 6 2025 .TONIGHT...Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds. Isolated thunderstorms. .TUESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds. Scattered showers. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 6 seconds. Scattered showers. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 6 seconds. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds. Scattered showers. .THURSDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. .FRIDAY...Southeast winds around 5 knots. Seas around 2 feet. Scattered showers in the afternoon. .FRIDAY NIGHT...Southeast winds around 5 knots, increasing to 5 to 10 knots after midnight. Seas 2 to 3 feet. .SATURDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet. Scattered showers in the afternoon. .SATURDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ741-070915- Mona Passage Southward to 17N- 423 PM AST Mon Oct 6 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY MORNING... .TONIGHT...Northeast winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 7 feet. Wave Detail: North 6 feet at 13 seconds and east 2 feet at 4 seconds. Scattered showers. Isolated thunderstorms early this evening. Isolated thunderstorms after midnight. .TUESDAY...East winds 5 to 10 knots. Seas 5 to 7 feet. Wave Detail: North 6 feet at 13 seconds and east 2 feet at 5 seconds. Numerous showers, mainly in the morning. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 5 feet. Wave Detail: North 5 feet at 13 seconds and east 2 feet at 5 seconds. .WEDNESDAY...Southeast winds around 10 knots. Seas 3 to 4 feet. Wave Detail: North 4 feet at 12 seconds and east 2 feet at 5 seconds. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: North 3 feet at 11 seconds and southeast 2 feet at 4 seconds. Scattered showers. .THURSDAY...East winds 5 to 10 knots. Seas around 3 feet. Wave Detail: East 3 feet at 6 seconds and north 2 feet at 10 seconds. .THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet. .FRIDAY...Southeast winds around 5 knots. Seas around 3 feet. .FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 3 feet. Scattered showers. .SATURDAY...Southeast winds around 10 knots. Seas around 3 feet. .SATURDAY NIGHT...Southeast winds around 10 knots. Seas 3 to 4 feet. Winds and seas higher in and near thunderstorms. $$ AMZ742-070915- Coastal Waters of Northwestern Puerto Rico out 10 NM- 423 PM AST Mon Oct 6 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY MORNING... .TONIGHT...Northeast winds 10 to 15 knots with gusts up to 20 knots, becoming east 5 to 10 knots late. Seas 5 to 7 feet. Wave Detail: Northeast 7 feet at 13 seconds. Scattered showers with isolated thunderstorms early this evening, then isolated showers late this evening and overnight. .TUESDAY...East winds 5 to 10 knots, becoming northeast in the afternoon. Seas 4 to 6 feet. Wave Detail: Northeast 6 feet at 13 seconds. Showers in the afternoon. .TUESDAY NIGHT...East winds around 5 knots. Seas 3 to 5 feet. Wave Detail: Northeast 5 feet at 13 seconds. Numerous showers in the evening. .WEDNESDAY...Southeast winds around 5 knots, becoming south with gusts up to 20 knots in the afternoon. Seas 2 to 4 feet. Wave Detail: Northeast 4 feet at 12 seconds and south 2 feet at 3 seconds. Scattered showers in the afternoon. .WEDNESDAY NIGHT...East winds 5 to 10 knots, diminishing to around 5 knots after midnight. Seas 2 to 4 feet. Wave Detail: Northeast 3 feet at 11 seconds and south 2 feet at 4 seconds. .THURSDAY...Southeast winds around 5 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds. Numerous showers in the afternoon. .THURSDAY NIGHT...East winds around 5 knots. Seas 2 to 3 feet. .FRIDAY...East winds around 5 knots, becoming west around 5 knots in the afternoon. Seas 2 to 3 feet. .FRIDAY NIGHT...Southeast winds around 5 knots, increasing to 5 to 10 knots after midnight. Seas 2 to 3 feet. .SATURDAY...Southeast winds 5 to 10 knots, becoming south 10 to 15 knots in the afternoon. Seas 2 to 3 feet. .SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 4 feet. Winds and seas higher in and near thunderstorms. $$ AMZ745-070915- Coastal Waters of Southwestern Puerto Rico out 10 NM- 423 PM AST Mon Oct 6 2025 .TONIGHT...Northeast winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: Northwest 3 feet at 13 seconds and southeast 1 foot at 3 seconds. Scattered showers with isolated thunderstorms early this evening. .TUESDAY...East winds around 5 knots. Seas 2 to 4 feet. Wave Detail: Northwest 3 feet at 13 seconds. Scattered showers. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at 13 seconds. .WEDNESDAY...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: South 2 feet at 3 seconds and northwest 2 feet at 12 seconds. .WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 3 seconds and northwest 1 foot at 11 seconds. .THURSDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 1 foot at 4 seconds and north 1 foot at 10 seconds. Numerous showers in the afternoon. .THURSDAY NIGHT...East winds around 5 knots. Seas around 2 feet. .FRIDAY...Southeast winds around 5 knots. Seas around 2 feet. Scattered showers in the afternoon. .FRIDAY NIGHT...Southeast winds around 5 knots, increasing to 5 to 10 knots after midnight. Seas around 2 feet. .SATURDAY...Southeast winds 10 to 15 knots. Seas around 2 feet. .SATURDAY NIGHT...Southeast winds around 10 knots. Seas around 2 feet. Winds and seas higher in and near thunderstorms. $$