


Coastal Waters Forecast
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
431 FZCA52 TJSJ 031936 CWFSJU Coastal Waters Forecast National Weather Service San Juan PR 336 PM AST Sun Aug 3 2025 Puerto Rico and the U.S. Virgin Islands Waters AMZ700-040815- 336 PM AST Sun Aug 3 2025 .SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS... Showers and thunderstorms associated with a departing tropical wave will continue to diminish tonight. A surface high- pressure over the central Atlantic will promote moderate to locally fresh winds through early this week. Hazy skies are anticipated tonight into Monday due to the arrival of Saharan dust. $$ AMZ711-040815- Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- 336 PM AST Sun Aug 3 2025 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 8 seconds. Isolated showers and thunderstorms this evening, then scattered showers after midnight. .MONDAY...East winds 10 to 15 knots with gusts up to 30 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 8 seconds. .MONDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 7 seconds. .TUESDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds and southeast 1 foot at 5 seconds. .TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds and north 1 foot at 9 seconds. Scattered showers. .WEDNESDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 7 seconds and north 1 foot at 9 seconds. Scattered showers in the morning. .WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. .THURSDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. .FRIDAY...East winds 10 to 15 knots. Seas around 3 feet, occasionally to 4 feet. .FRIDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Winds and seas higher in and near thunderstorms. $$ AMZ712-040815- Coastal Waters of Northern Puerto Rico out 10 NM- 336 PM AST Sun Aug 3 2025 .TONIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 4 feet at 8 seconds. Isolated showers and thunderstorms this evening. Scattered showers after midnight. Isolated thunderstorms late. .MONDAY...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 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 8 seconds. Scattered showers in the afternoon. .MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 8 seconds. .TUESDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at 8 seconds and north 1 foot at 10 seconds. .TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at 8 seconds and north 1 foot at 10 seconds. Scattered showers. .WEDNESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 25 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 8 seconds and north 1 foot at 9 seconds. Scattered showers in the morning. .WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots, becoming southeast 5 to 10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. .THURSDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. .THURSDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas around 3 feet, occasionally to 4 feet. .FRIDAY...East winds 10 to 15 knots. Seas around 3 feet, occasionally to 4 feet. .FRIDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Winds and seas higher in and near thunderstorms. $$ AMZ716-040815- Coastal Waters from Cabo San Juan to the waters between Anegada Island and Virgin Gorda and North 10 NM- 336 PM AST Sun Aug 3 2025 .TONIGHT...East winds around 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 4 seconds and northeast 3 feet at 8 seconds. Scattered showers. Isolated thunderstorms early this evening. Isolated thunderstorms after midnight. .MONDAY...East winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds and northeast 2 feet at 8 seconds. Scattered showers in the morning. .MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet at 7 seconds. Scattered showers after midnight. .TUESDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: Northeast 3 feet at 8 seconds and east 2 feet at 5 seconds. Scattered showers. .TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet at 5 seconds and northeast 2 feet at 8 seconds. Scattered showers. .WEDNESDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet at 5 seconds and northwest 1 foot at 9 seconds. Scattered showers. .WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet, occasionally to 4 feet. .THURSDAY...East winds 10 to 15 knots. Seas 2 to 3 feet, occasionally to 4 feet. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet, occasionally to 4 feet. Scattered showers. .FRIDAY...East winds 10 to 15 knots. Seas 2 to 3 feet, occasionally to 4 feet. Scattered showers in the morning. .FRIDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet, occasionally to 4 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ723-040815- Anegada Passage east of Virgin Gorda and Saint Croix south to 17N- 336 PM AST Sun Aug 3 2025 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...East winds 15 to 20 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 east 3 feet at 8 seconds. Isolated showers. .MONDAY...East winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. Scattered showers in the morning. .MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds. Scattered showers after midnight. .TUESDAY...East winds around 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds and northeast 3 feet at 8 seconds. Scattered showers in the morning. .TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet at 5 seconds and northeast 3 feet at 9 seconds. Scattered showers in the evening. .WEDNESDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet at 5 seconds and northeast 1 foot at 9 seconds. Scattered showers in the morning. .WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet, occasionally to 4 feet. .THURSDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet, occasionally to 4 feet. Scattered showers. .FRIDAY...East winds 10 to 15 knots. Seas around 3 feet, occasionally to 4 feet. .FRIDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. $$ AMZ726-040815- Coastal waters east of Puerto Rico, around Vieques, and around and just north of Culebra and Saint John- 336 PM AST Sun Aug 3 2025 .TONIGHT...East winds around 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 5 seconds and east 3 feet at 8 seconds. Scattered showers with isolated thunderstorms. .MONDAY...East winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds. Scattered showers in the morning. .MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers. .TUESDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers in the morning. .TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers. .WEDNESDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet at 5 seconds. Scattered showers. .WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet, occasionally to 4 feet. .THURSDAY...East winds 10 to 15 knots. Seas 2 to 3 feet, occasionally to 4 feet. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet, occasionally to 4 feet. Scattered showers. .FRIDAY...East winds 10 to 15 knots. Seas 2 to 3 feet, occasionally to 4 feet. Scattered showers in the morning. .FRIDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet, occasionally to 4 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ733-040815- Caribbean waters of Puerto Rico from 10 NM to 17N, including the coastal waters of Saint Croix- 336 PM AST Sun Aug 3 2025 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. Isolated showers and thunderstorms early this evening. Scattered showers late this evening and early morning, then isolated showers and thunderstorms late. .MONDAY...East winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. .MONDAY NIGHT...East winds around 15 knots with gusts up to 25 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds. .TUESDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds. .TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 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 around 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet at 7 seconds. Scattered showers in the morning. .WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet, occasionally to 4 feet. .THURSDAY...East winds 10 to 15 knots. Seas around 3 feet, occasionally to 4 feet. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet, occasionally to 4 feet. Scattered showers. .FRIDAY...East winds 10 to 15 knots. Seas around 3 feet, occasionally to 4 feet. .FRIDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet, occasionally to 4 feet. Winds and seas higher in and near thunderstorms. $$ AMZ735-040815- Coastal Waters of Southern Puerto Rico out 10 NM- 336 PM AST Sun Aug 3 2025 .TONIGHT...East winds 10 to 15 knots, increasing to 15 to 20 knots late. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. Scattered showers with isolated thunderstorms. .MONDAY...East winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. Scattered showers in the morning. .MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 6 seconds. .TUESDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 6 seconds. .TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots, becoming northeast 5 to 10 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers in the evening. .WEDNESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers in the morning. .WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet, occasionally to 4 feet. .THURSDAY...East winds 10 to 15 knots. Seas 2 to 3 feet, occasionally to 4 feet. .THURSDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally to 4 feet. Scattered showers. .FRIDAY...East winds 10 to 15 knots. Seas 2 to 3 feet, occasionally to 4 feet. .FRIDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet, occasionally to 4 feet. Winds and seas higher in and near thunderstorms. $$ AMZ741-040815- Mona Passage Southward to 17N- 336 PM AST Sun Aug 3 2025 .TONIGHT...East winds 10 to 15 knots, increasing to 15 to 20 knots late this evening and overnight. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. Isolated showers this evening. Scattered showers after midnight. .MONDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 7 seconds. .MONDAY NIGHT...East winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. .TUESDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. .TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds and north 1 foot at 9 seconds. .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 4 feet at 6 seconds and north 1 foot at 9 seconds. .WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet, occasionally to 4 feet. Scattered showers. .THURSDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. .FRIDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. .FRIDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. $$ AMZ742-040815- Coastal Waters of Northwestern Puerto Rico out 10 NM- 336 PM AST Sun Aug 3 2025 .TONIGHT...East winds around 5 knots, increasing to 5 to 10 knots late this evening and overnight. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: Northeast 2 feet at 9 seconds and south 1 foot at 5 seconds. Isolated showers early this evening. .MONDAY...East winds 5 to 10 knots, becoming northeast in the afternoon. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: Northeast 2 feet at 8 seconds and south 1 foot at 5 seconds. Numerous showers and scattered thunderstorms in the afternoon. .MONDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet at 7 seconds. .TUESDAY...Northeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet at 6 seconds. .TUESDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to 25 knots. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet at 6 seconds and north 1 foot at 10 seconds. .WEDNESDAY...East winds 5 to 10 knots, diminishing to around 5 knots in the afternoon. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: Northeast 3 feet at 5 seconds and north 1 foot at 9 seconds. Numerous showers in the afternoon. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally to 4 feet. Scattered showers. .THURSDAY...Northeast winds around 5 knots. Seas 2 to 3 feet, occasionally to 4 feet. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally to 4 feet. .FRIDAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet, occasionally to 4 feet. Scattered showers in the afternoon. .FRIDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally to 4 feet. Winds and seas higher in and near thunderstorms. $$ AMZ745-040815- Coastal Waters of Southwestern Puerto Rico out 10 NM- 336 PM AST Sun Aug 3 2025 .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: Southeast 2 feet at 5 seconds. Isolated showers. .MONDAY...East winds 10 to 15 knots, becoming southeast 15 to 20 knots in the afternoon. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet at 5 seconds. .MONDAY 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, occasionally to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds. .TUESDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 6 seconds. Numerous showers in the afternoon. .TUESDAY NIGHT...Northeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 6 seconds and northwest 1 foot at 8 seconds. .WEDNESDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds and north 1 foot at 9 seconds. Scattered showers in the afternoon. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 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. .FRIDAY...East winds around 5 knots. Seas around 2 feet. Scattered showers in the afternoon. .FRIDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. $$