Coastal Waters Forecast
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
766 FZCA52 TJSJ 050650 CWFSJU Coastal Waters Forecast National Weather Service San Juan PR 250 AM AST Sun Oct 5 2025 Puerto Rico and the U.S. Virgin Islands Waters AMZ700-051915- 250 AM AST Sun Oct 5 2025 .SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS... A col near the region will promote a light to gentle variable wind flow across the islands today. A long-period north to northwesterly swell will spread across the local Atlantic waters and passages through early next week, deteriorating marine and coastal conditions through the upcoming workweek. A tropical wave will approach the region by Monday, increasing the frequency of showers. $$ AMZ711-051915- Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- 250 AM AST Sun Oct 5 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING... .TODAY...East winds 5 to 10 knots. Seas 9 to 10 feet. Wave Detail: North 8 feet at 13 seconds and east 2 feet at 9 seconds. Scattered showers with isolated thunderstorms. .TONIGHT...East winds 5 to 10 knots. Seas 9 to 10 feet. Wave Detail: Northeast 7 feet at 13 seconds and east 2 feet at 9 seconds. Scattered showers. .MONDAY...East winds around 10 knots. Seas 9 to 10 feet, subsiding to 7 to 8 feet in the afternoon. Wave Detail: Northeast 7 feet at 13 seconds and east 2 feet at 8 seconds, becoming northeast 7 feet at 14 seconds and east 2 feet at 8 seconds. Scattered showers. .MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 6 to 8 feet. Wave Detail: Northeast 7 feet at 14 seconds and east 3 feet at 7 seconds. Numerous showers. .TUESDAY...East winds around 10 knots. Seas 5 to 6 feet. Wave Detail: Northeast 6 feet at 13 seconds and east 3 feet at 7 seconds. Numerous showers, mainly in the morning. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 4 to 5 feet. Wave Detail: Northeast 5 feet at 12 seconds and east 3 feet at 8 seconds. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 4 feet. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 4 feet. .THURSDAY...East winds 10 to 15 knots. Seas 3 to 4 feet. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ712-051915- Coastal Waters of Northern Puerto Rico out 10 NM- 250 AM AST Sun Oct 5 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING... .TODAY...East winds 5 to 10 knots. Seas 9 to 10 feet. Wave Detail: North 7 feet at 13 seconds and east 1 foot at 9 seconds. Numerous showers this morning. Isolated thunderstorms. Scattered showers this afternoon. .TONIGHT...East winds 5 to 10 knots. Seas 8 to 9 feet. Wave Detail: North 7 feet at 13 seconds and east 1 foot at 9 seconds. Scattered showers in the evening. .MONDAY...East winds 5 to 10 knots. Seas 7 to 9 feet. Wave Detail: Northeast 7 feet at 13 seconds and east 1 foot at 8 seconds. Scattered showers. .MONDAY NIGHT...East winds 5 to 10 knots. Seas 6 to 8 feet. Wave Detail: Northeast 7 feet at 14 seconds. Numerous showers, mainly in the evening. .TUESDAY...East winds 5 to 10 knots. Seas 5 to 6 feet. Wave Detail: Northeast 6 feet at 13 seconds. Scattered showers. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 4 to 5 feet. Wave Detail: Northeast 5 feet at 12 seconds. Scattered showers. .WEDNESDAY...Southeast winds 5 to 10 knots, becoming east in the afternoon. Seas around 4 feet. Scattered showers in the afternoon. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Scattered showers. .THURSDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 3 to 4 feet. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet. Winds and seas higher in and near thunderstorms. $$ AMZ716-051915- Coastal Waters from Cabo San Juan to the waters between Anegada Island and Virgin Gorda and North 10 NM- 250 AM AST Sun Oct 5 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING... .TODAY...East winds 5 to 10 knots. Seas 6 to 9 feet. Wave Detail: Northeast 7 feet at 13 seconds and east 1 foot at 7 seconds. Scattered showers with isolated thunderstorms. .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 6 to 9 feet. Wave Detail: Northeast 7 feet at 13 seconds and east 2 feet at 7 seconds. Scattered showers. .MONDAY...East winds around 10 knots. Seas 6 to 9 feet. Wave Detail: Northeast 7 feet at 13 seconds and east 2 feet at 7 seconds. Numerous showers, mainly in the morning. .MONDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 8 feet. Wave Detail: Northeast 6 feet at 14 seconds and east 2 feet at 7 seconds. Numerous showers. .TUESDAY...Southeast winds 5 to 10 knots. Seas 4 to 6 feet. Wave Detail: Northeast 6 feet at 13 seconds. Numerous showers, mainly in the morning. .TUESDAY NIGHT...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots after midnight. Seas 3 to 5 feet. Wave Detail: Northeast 5 feet at 12 seconds. Scattered showers. .WEDNESDAY...Southeast winds around 10 knots. Seas 3 to 4 feet. Scattered showers. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet. Scattered showers. .THURSDAY...East winds 10 to 15 knots. Seas 2 to 4 feet. Scattered showers. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ723-051915- Anegada Passage east of Virgin Gorda and Saint Croix south to 17N- 250 AM AST Sun Oct 5 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING... .TODAY...East winds 5 to 10 knots. Seas 5 to 8 feet. Wave Detail: North 6 feet at 14 seconds and east 2 feet at 7 seconds. Scattered showers with isolated thunderstorms early this morning, then isolated showers late this morning and afternoon. .TONIGHT...Northeast winds 10 to 15 knots with gusts up to 20 knots. Seas 6 to 9 feet. Wave Detail: Northeast 6 feet at 13 seconds. Scattered showers in the evening, then numerous showers after midnight. .MONDAY...Northeast winds 10 to 15 knots. Seas 7 to 9 feet. Wave Detail: Northeast 6 feet at 13 seconds. Scattered showers in the afternoon. .MONDAY NIGHT...Northeast winds 10 to 15 knots, becoming east 5 to 10 knots after midnight. Seas 6 to 7 feet. Wave Detail: Northeast 6 feet at 14 seconds. Numerous showers. .TUESDAY...Southeast winds 5 to 10 knots. Seas 4 to 5 feet. Wave Detail: Northeast 5 feet at 13 seconds. Numerous showers, mainly in the morning. .TUESDAY NIGHT...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots after midnight. Seas 4 to 5 feet. Wave Detail: Northeast 4 feet at 12 seconds. .WEDNESDAY...Southeast winds around 10 knots. Seas around 4 feet. Scattered showers. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 4 feet. Scattered showers. .THURSDAY...East winds 10 to 15 knots. Seas around 4 feet. Scattered showers. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas around 4 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ726-051915- Coastal waters east of Puerto Rico, around Vieques, and around and just north of Culebra and Saint John- 250 AM AST Sun Oct 5 2025 .TODAY...East winds 5 to 10 knots. Seas 3 to 5 feet. Wave Detail: Northeast 2 feet at 13 seconds and east 1 foot at 8 seconds. Scattered showers. Isolated thunderstorms this morning. Isolated thunderstorms late. .TONIGHT...East winds 5 to 10 knots. Seas 4 to 6 feet. Wave Detail: East 2 feet at 3 seconds and northeast 2 feet at 13 seconds. Scattered showers in the evening, then numerous showers after midnight. .MONDAY...East winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: East 2 feet at 4 seconds and northeast 2 feet at 13 seconds. Numerous showers, mainly in the morning. .MONDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 6 feet. Wave Detail: East 3 feet at 4 seconds and northeast 2 feet at 13 seconds. Numerous showers. .TUESDAY...East winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: East 2 feet at 3 seconds and east 2 feet at 7 seconds. Numerous showers, mainly in the morning. .TUESDAY NIGHT...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots after midnight. Seas 2 to 4 feet. Wave Detail: East 2 feet at 7 seconds and northeast 2 feet at 12 seconds. Scattered showers. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers. .THURSDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ733-051915- Caribbean waters of Puerto Rico from 10 NM to 17N, including the coastal waters of Saint Croix- 250 AM AST Sun Oct 5 2025 .TODAY...East winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: East 1 foot at 3 seconds and east 1 foot at 8 seconds. Scattered showers with isolated thunderstorms this morning, then isolated showers early this afternoon. Scattered showers with isolated thunderstorms late. .TONIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: East 2 feet at 3 seconds and east 1 foot at 8 seconds. Scattered showers. .MONDAY...East winds around 10 knots. Seas 3 to 4 feet. Wave Detail: East 2 feet at 4 seconds and northeast 2 feet at 13 seconds. Scattered showers in the morning. .MONDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 4 seconds and northeast 2 feet at 13 seconds. Numerous showers. .TUESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 6 seconds and northeast 2 feet at 13 seconds. Numerous showers, mainly in the morning. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds and east 2 feet at 8 seconds. .WEDNESDAY...Southeast winds around 10 knots. Seas 2 to 3 feet. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet. Scattered showers. .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. Winds and seas higher in and near thunderstorms. $$ AMZ735-051915- Coastal Waters of Southern Puerto Rico out 10 NM- 250 AM AST Sun Oct 5 2025 .TODAY...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 1 foot at 3 seconds and east 1 foot at 7 seconds. Isolated thunderstorms until late afternoon. Scattered showers. .TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 1 foot at 3 seconds and east 1 foot at 7 seconds. Scattered showers after midnight. .MONDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds. Scattered showers. .MONDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 4 seconds. Scattered showers in the evening. .TUESDAY...Northeast winds 5 to 10 knots, becoming southeast in the afternoon. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds. Scattered showers. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds. Scattered showers. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. .THURSDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$ AMZ741-051915- Mona Passage Southward to 17N- 250 AM AST Sun Oct 5 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING... .TODAY...East winds 5 to 10 knots. Seas 6 to 9 feet. Wave Detail: North 6 feet at 12 seconds. Scattered showers. Isolated thunderstorms this afternoon. .TONIGHT...East winds 5 to 10 knots. Seas 6 to 9 feet. Wave Detail: North 6 feet at 12 seconds. Scattered showers. .MONDAY...East winds 5 to 10 knots. Seas 5 to 8 feet. Wave Detail: North 6 feet at 12 seconds. .MONDAY NIGHT...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 after midnight. .TUESDAY...East winds 5 to 10 knots. Seas 4 to 6 feet. Wave Detail: North 6 feet at 13 seconds and east 2 feet at 4 seconds. .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 10 to 15 knots. Seas 3 to 4 feet. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet. Scattered showers. .THURSDAY...East winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas 3 to 4 feet. .THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet. Winds and seas higher in and near thunderstorms. $$ AMZ742-051915- Coastal Waters of Northwestern Puerto Rico out 10 NM- 250 AM AST Sun Oct 5 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH MONDAY EVENING... .TODAY...East winds around 5 knots, becoming northeast this afternoon. Seas 5 to 7 feet. Wave Detail: North 7 feet at 12 seconds. Numerous showers with isolated thunderstorms this afternoon. .TONIGHT...East winds 5 to 10 knots. Seas 5 to 7 feet. Wave Detail: North 7 feet at 12 seconds. Scattered showers in the evening. .MONDAY...Northeast winds 5 to 10 knots. Seas 5 to 7 feet. Wave Detail: Northeast 6 feet at 12 seconds. Numerous showers in the afternoon. .MONDAY NIGHT...Northeast winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: Northeast 6 feet at 13 seconds. .TUESDAY...Northeast winds 5 to 10 knots. Seas 3 to 5 feet. Wave Detail: Northeast 5 feet at 13 seconds. Showers in the afternoon. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 5 feet. Wave Detail: Northeast 5 feet at 13 seconds. Numerous showers. .WEDNESDAY...South winds 5 to 10 knots. Seas 2 to 4 feet. Scattered showers in the afternoon. .WEDNESDAY NIGHT...East winds around 5 knots. Seas 2 to 4 feet. .THURSDAY...Northeast winds around 5 knots. Seas 2 to 3 feet. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds around 5 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$ AMZ745-051915- Coastal Waters of Southwestern Puerto Rico out 10 NM- 250 AM AST Sun Oct 5 2025 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TODAY...East winds around 5 knots, becoming around 5 knots. Seas 4 to 6 feet. Wave Detail: Northwest 4 feet at 11 seconds. Scattered showers with isolated thunderstorms this afternoon. .TONIGHT...Northeast winds 5 to 10 knots. Seas 4 to 6 feet. Wave Detail: Northwest 4 feet at 12 seconds. .MONDAY...East winds around 5 knots, becoming southeast in the afternoon. Seas 3 to 5 feet. Wave Detail: Northwest 3 feet at 12 seconds. Numerous showers in the afternoon. .MONDAY NIGHT...Northeast winds around 5 knots. Seas 2 to 4 feet. Wave Detail: Northwest 3 feet at 13 seconds and south 1 foot at 4 seconds. .TUESDAY...East winds around 5 knots, becoming south in the afternoon. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at 13 seconds and south 1 foot at 4 seconds. Numerous showers in the afternoon. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at 13 seconds and southeast 1 foot at 3 seconds. .WEDNESDAY...Southeast winds around 10 knots. Seas 2 to 3 feet. .WEDNESDAY NIGHT...East winds 5 to 10 knots, diminishing to around 5 knots after midnight. Seas 2 to 3 feet. .THURSDAY...East winds 5 to 10 knots. Seas around 2 feet. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds around 5 knots. Seas around 2 feet. Winds and seas higher in and near thunderstorms. $$