Coastal Waters Forecast
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
116 FZCA52 TJSJ 231624 CCA CWFSJU Coastal Waters Forecast...CORRECTED National Weather Service San Juan PR 1224 PM AST Sat Aug 23 2025 Puerto Rico and the U.S. Virgin Islands Waters AMZ700-232015- 1224 PM AST Sat Aug 23 2025 .SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS... A tropical wave moving south of the area will promote showers and thunderstorms today, mainly across the Caribbean waters and local passages under a east southeast wind flow. A long period northerly swell from distant Hurricane Erin will spread across the islands from now onward, resulting in hazardous seas for the Atlantic waters and Caribbean passages through early next week. $$ AMZ711-232015- Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- 1224 PM AST Sat Aug 23 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON AST TODAY THROUGH MONDAY AFTERNOON... .TODAY...East winds 5 to 10 knots. Seas 5 to 7 feet. Wave Detail: East 4 feet at 8 seconds and northwest 4 feet at 13 seconds. Isolated thunderstorms. .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 6 to 7 feet. Wave Detail: North 5 feet at 13 seconds and east 4 feet at 8 seconds. Scattered showers in the evening. .SUNDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 7 to 8 feet. Wave Detail: North 6 feet at 13 seconds and east 4 feet at 8 seconds. .SUNDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 7 to 8 feet. Wave Detail: East 7 feet at 9 seconds and north 6 feet at 13 seconds. .MONDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 7 to 8 feet. Wave Detail: East 8 feet at 10 seconds. .MONDAY NIGHT...East winds 15 to 20 knots with gusts up to 30 knots. Seas 7 to 8 feet. Wave Detail: East 8 feet at 10 seconds. .TUESDAY...East winds 15 to 20 knots. Seas 7 to 8 feet. .TUESDAY NIGHT...East winds 10 to 15 knots. Seas 6 to 7 feet. .WEDNESDAY...East winds 10 to 15 knots. Seas 5 to 6 feet. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 5 feet. Winds and seas higher in and near thunderstorms. $$ AMZ712-232015- Coastal Waters of Northern Puerto Rico out 10 NM- 1224 PM AST Sat Aug 23 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH MONDAY AFTERNOON... .TODAY...East winds 5 to 10 knots. Seas 5 to 6 feet. Wave Detail: Northwest 4 feet at 12 seconds and northeast 3 feet at 7 seconds. Numerous showers with isolated thunderstorms. .TONIGHT...East winds 5 to 10 knots. Seas 5 to 7 feet. Wave Detail: North 5 feet at 13 seconds and northeast 3 feet at 8 seconds. Scattered showers in the evening. .SUNDAY...East winds 10 to 15 knots with gusts up to 20 knots, increasing to 15 to 20 knots with gusts up to 30 knots in the afternoon. Seas 6 to 8 feet. Wave Detail: East 5 feet at 8 seconds and north 5 feet at 13 seconds. .SUNDAY NIGHT...East winds 15 to 20 knots with gusts up to 30 knots, diminishing to 10 to 15 knots with gusts up to 20 knots after midnight. Seas 6 to 8 feet. Wave Detail: East 5 feet at 6 seconds and north 5 feet at 13 seconds. .MONDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: Northeast 7 feet at 10 seconds. .MONDAY NIGHT...East winds 15 to 20 knots with gusts up to 30 knots. Seas around 7 feet. Wave Detail: Northeast 7 feet at 9 seconds. .TUESDAY...East winds 15 to 20 knots. Seas 6 to 7 feet. .TUESDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 6 to 7 feet. .WEDNESDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 5 to 6 feet. Scattered showers in the afternoon. .WEDNESDAY NIGHT...East winds 10 to 15 knots, becoming southeast 5 to 10 knots after midnight. Seas 4 to 5 feet. Winds and seas higher in and near thunderstorms. $$ AMZ716-232015- Coastal Waters from Cabo San Juan to the waters between Anegada Island and Virgin Gorda and North 10 NM- 1224 PM AST Sat Aug 23 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY AFTERNOON... .TODAY...Southeast winds 5 to 10 knots. Seas 3 to 5 feet. Wave Detail: East 3 feet at 7 seconds and northwest 3 feet at 10 seconds. Isolated thunderstorms. Numerous showers early this morning, then scattered showers late this morning and afternoon. .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 5 feet. Wave Detail: Northwest 4 feet at 14 seconds and east 3 feet at 8 seconds. Scattered showers in the evening. .SUNDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 5 to 7 feet. Wave Detail: Northwest 5 feet at 13 seconds and east 4 feet at 5 seconds. .SUNDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 8 feet. Wave Detail: East 5 feet at 5 seconds and north 5 feet at 13 seconds. .MONDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 7 feet. Wave Detail: East 5 feet at 6 seconds and north 5 feet at 13 seconds. .MONDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 7 feet. Wave Detail: East 7 feet at 7 seconds and north 5 feet at 11 seconds. .TUESDAY...East winds 15 to 20 knots. Seas 5 to 7 feet. Scattered showers in the afternoon. .TUESDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 6 feet. .WEDNESDAY...East winds 10 to 15 knots. Seas 4 to 6 feet. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Winds and seas higher in and near thunderstorms. $$ AMZ723-232015- Anegada Passage east of Virgin Gorda and Saint Croix south to 17N- 1224 PM AST Sat Aug 23 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY AFTERNOON... .TODAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 7 seconds and northwest 1 foot at 9 seconds. Isolated thunderstorms. Numerous showers early this morning, then scattered showers late this morning and afternoon. .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds and northwest 1 foot at 10 seconds. Scattered showers in the evening. .SUNDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 6 seconds and northwest 1 foot at 10 seconds. .SUNDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 6 feet. Wave Detail: East 6 feet at 7 seconds and northwest 1 foot at 11 seconds. .MONDAY...East winds around 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: East 7 feet at 7 seconds and northwest 1 foot at 10 seconds. .MONDAY NIGHT...East winds 20 to 25 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: East 7 feet at 8 seconds. .TUESDAY...East winds 15 to 20 knots. Seas 6 to 7 feet. Scattered showers in the afternoon. .TUESDAY NIGHT...East winds around 15 knots. Seas 5 to 6 feet. .WEDNESDAY...East winds 10 to 15 knots. Seas 4 to 5 feet. .WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas around 4 feet. Winds and seas higher in and near thunderstorms. $$ AMZ726-232015- Coastal waters east of Puerto Rico, around Vieques, and around and just north of Culebra and Saint John- 1224 PM AST Sat Aug 23 2025 .TODAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: East 3 feet at 7 seconds and northwest 1 foot at 7 seconds. Isolated thunderstorms. .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 4 feet. Wave Detail: East 3 feet at 7 seconds. Scattered showers in the evening. .SUNDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 3 to 5 feet. Wave Detail: East 4 feet at 5 seconds. .SUNDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 6 seconds and northwest 1 foot at 9 seconds. .MONDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 6 seconds. .MONDAY NIGHT...East winds 15 to 20 knots with gusts up to 30 knots. Seas 4 to 6 feet. Wave Detail: East 6 feet at 7 seconds. .TUESDAY...East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered showers. .TUESDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 5 feet. .WEDNESDAY...East winds 10 to 15 knots. Seas 3 to 5 feet. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Winds and seas higher in and near thunderstorms. $$ AMZ733-232015- Caribbean waters of Puerto Rico from 10 NM to 17N, including the coastal waters of Saint Croix- 1224 PM AST Sat Aug 23 2025 .TODAY...Southeast winds 5 to 10 knots. Seas around 3 feet. Wave Detail: East 3 feet at 7 seconds. Isolated thunderstorms. Numerous showers early this morning, then scattered showers late this morning and afternoon. .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 7 seconds. Scattered showers. .SUNDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 6 seconds. .SUNDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas around 5 feet. Wave Detail: East 5 feet at 6 seconds. .MONDAY...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 and northwest 1 foot at 11 seconds. .MONDAY NIGHT...East winds 20 to 25 knots with gusts up to 30 knots. Seas 5 to 6 feet. Wave Detail: East 6 feet at 7 seconds and northwest 1 foot at 11 seconds. .TUESDAY...East winds 20 to 25 knots, diminishing to 15 to 20 knots in the afternoon. Seas 5 to 6 feet. .TUESDAY NIGHT...East winds 15 to 20 knots. Seas around 5 feet. .WEDNESDAY...East winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 4 to 5 feet. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet. Winds and seas higher in and near thunderstorms. $$ AMZ735-232015- Coastal Waters of Southern Puerto Rico out 10 NM- 1224 PM AST Sat Aug 23 2025 .TODAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 6 seconds. Numerous showers with isolated thunderstorms early this morning, then scattered showers late this morning. Isolated showers this afternoon. .TONIGHT...East winds 5 to 10 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 6 seconds. .SUNDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas 2 to 4 feet. Wave Detail: East 3 feet at 5 seconds. .SUNDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 3 to 5 feet. Wave Detail: East 4 feet at 5 seconds. .MONDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet. Wave Detail: East 5 feet at 6 seconds. .MONDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet. Wave Detail: East 5 feet at 7 seconds. .TUESDAY...East winds 15 to 20 knots. Seas 3 to 5 feet. .TUESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet. .WEDNESDAY...East winds 10 to 15 knots. Seas 3 to 4 feet. .WEDNESDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 3 to 4 feet. Winds and seas higher in and near thunderstorms. $$ AMZ741-232015- Mona Passage Southward to 17N- 1224 PM AST Sat Aug 23 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY AFTERNOON... .TODAY...East winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots late. Seas 4 to 5 feet. Wave Detail: East 3 feet at 6 seconds and north 3 feet at 11 seconds. Numerous showers early this morning. Isolated thunderstorms until late afternoon. Scattered showers late this morning and afternoon. .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 6 feet. Wave Detail: East 4 feet at 5 seconds and north 4 feet at 13 seconds. Scattered showers. .SUNDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 7 feet. Wave Detail: North 5 feet at 13 seconds and east 4 feet at 5 seconds. Numerous showers in the afternoon. .SUNDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 6 to 8 feet. Wave Detail: East 7 feet at 9 seconds and north 5 feet at 13 seconds. .MONDAY...East winds 15 to 20 knots with gusts up to 30 knots. Seas 6 to 7 feet. Wave Detail: East 7 feet at 9 seconds. .MONDAY NIGHT...East winds 20 to 25 knots with gusts up to 30 knots. Seas 6 to 8 feet. Wave Detail: East 8 feet at 9 seconds. .TUESDAY...East winds 15 to 20 knots. Seas 6 to 7 feet. .TUESDAY NIGHT...East winds 15 to 20 knots. Seas 6 to 7 feet. .WEDNESDAY...East winds 15 to 20 knots. Seas 5 to 6 feet. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 5 feet. Winds and seas higher in and near thunderstorms. $$ AMZ742-232015- Coastal Waters of Northwestern Puerto Rico out 10 NM- 1224 PM AST Sat Aug 23 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY AFTERNOON THROUGH MONDAY AFTERNOON... .TODAY...East winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at 5 seconds and northwest 3 feet at 11 seconds. Scattered showers this morning, then showers with isolated thunderstorms this afternoon. .TONIGHT...East winds 5 to 10 knots. Seas 4 to 6 feet. Wave Detail: North 5 feet at 13 seconds and northeast 2 feet at 6 seconds. .SUNDAY...Northeast winds 5 to 10 knots. Seas 5 to 7 feet. Wave Detail: North 5 feet at 13 seconds. Numerous showers in the afternoon. .SUNDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Gusts up to 25 knots. Seas 5 to 7 feet. Wave Detail: North 6 feet at 13 seconds. Scattered showers in the evening. .MONDAY...East winds 5 to 10 knots with gusts up to 20 knots, increasing to 15 to 20 knots with gusts up to 30 knots in the afternoon. Seas 4 to 6 feet. Wave Detail: Northeast 6 feet at 9 seconds and north 5 feet at 13 seconds. Scattered showers in the afternoon. .MONDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet. Wave Detail: Northeast 6 feet at 10 seconds. .TUESDAY...East winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 4 to 6 feet. Scattered showers in the afternoon. .TUESDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 3 to 5 feet. .WEDNESDAY...East winds 5 to 10 knots. Seas 3 to 5 feet. Numerous showers in the afternoon. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet. Winds and seas higher in and near thunderstorms. $$ AMZ745-232015- Coastal Waters of Southwestern Puerto Rico out 10 NM- 1224 PM AST Sat Aug 23 2025 .TODAY...East winds around 5 knots, becoming southeast 10 to 15 knots with gusts up to 20 knots this afternoon. Seas 2 to 4 feet. Wave Detail: Northwest 3 feet at 10 seconds and southeast 2 feet at 6 seconds. Isolated showers this morning. Scattered showers early this afternoon, then isolated showers late. .TONIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: Northwest 4 feet at 12 seconds and southeast 2 feet at 4 seconds. .SUNDAY...East winds 5 to 10 knots. Seas 4 to 6 feet. Wave Detail: Northwest 4 feet at 12 seconds and southeast 2 feet at 4 seconds. Scattered showers in the afternoon. .SUNDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 4 to 6 feet. Wave Detail: Northwest 5 feet at 11 seconds and south 3 feet at 6 seconds. .MONDAY...Northeast winds around 5 knots, becoming east with gusts up to 20 knots in the afternoon. Seas 4 to 6 feet. Wave Detail: Northwest 5 feet at 11 seconds and south 2 feet at 6 seconds. .MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots, becoming northeast 5 to 10 knots after midnight. Seas 4 to 6 feet. Wave Detail: Northwest 4 feet at 12 seconds and southeast 3 feet at 7 seconds. .TUESDAY...East winds 10 to 15 knots, becoming southeast 15 to 20 knots in the afternoon. Seas 3 to 5 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 4 feet. .WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet. $$