Coastal Waters Forecast
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
861 FZCA52 TJSJ 302024 CWFSJU Coastal Waters Forecast National Weather Service San Juan PR 424 PM AST Wed Jul 30 2025 Puerto Rico and the U.S. Virgin Islands Waters AMZ700-310915- 424 PM AST Wed Jul 30 2025 .SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS... A surface high pressure over the central Atlantic, in combination with an induced surface trough, will continue to promote gentle to moderate east-southeasterly winds. Tonight, portions of the Caribbean waters may experience moderate to locally fresh winds, leading to slightly choppy marine conditions. By Friday, an approaching tropical wave and its leading edge will increase winds across the local waters, enhancing the potential for thunderstorms and resulting in localized hazardous marine conditions. $$ AMZ711-310915- Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- 424 PM AST Wed Jul 30 2025 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 8 seconds. Scattered showers early this evening. Isolated showers late this evening and early morning, then scattered showers late. .THURSDAY...East winds 15 to 20 knots with gusts up to 30 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 6 seconds. Scattered showers. .THURSDAY NIGHT...East winds 15 to 20 knots with gusts up to 30 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers. .FRIDAY...East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at 7 seconds and northeast 1 foot at 11 seconds. Scattered showers. .FRIDAY NIGHT...East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 7 seconds. Scattered showers after midnight. .SATURDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 7 seconds. Scattered showers. .SATURDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Scattered showers. .SUNDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .SUNDAY NIGHT...Southeast winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 4 to 6 feet, occasionally to 8 feet. Scattered showers. .MONDAY...East winds 15 to 20 knots. Seas around 5 feet, occasionally to 6 feet. Scattered showers. .MONDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Showers and scattered thunderstorms. Winds and seas higher in and near thunderstorms. $$ AMZ712-310915- Coastal Waters of Northern Puerto Rico out 10 NM- 424 PM AST Wed Jul 30 2025 .TONIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 8 seconds. .THURSDAY...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 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at 6 seconds. Scattered showers in the afternoon. .THURSDAY 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 6 seconds. Scattered showers after midnight. .FRIDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Gusts up to 30 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 7 seconds and northeast 1 foot at 11 seconds. Scattered showers. .FRIDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Gusts up to 30 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 5 feet at 7 seconds and northeast 1 foot at 11 seconds. Scattered showers. .SATURDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 7 seconds. Scattered showers in the morning, then numerous showers in the afternoon. .SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .SUNDAY...Southeast winds 5 to 10 knots, becoming east 10 to 15 knots in the afternoon. Seas around 4 feet, occasionally to 5 feet. Scattered showers in the afternoon. .SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 4 feet, occasionally to 5 feet. .MONDAY...East winds 10 to 15 knots. Seas around 4 feet, occasionally to 5 feet. Scattered showers and thunderstorms in the afternoon. .MONDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ716-310915- Coastal Waters from Cabo San Juan to the waters between Anegada Island and Virgin Gorda and North 10 NM- 424 PM AST Wed Jul 30 2025 .TONIGHT...East winds around 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds and northeast 1 foot at 8 seconds. Isolated showers late. .THURSDAY...East winds around 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds. Scattered showers. .THURSDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 6 seconds. Scattered showers. .FRIDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 6 seconds. Scattered showers. .FRIDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 6 seconds. Scattered showers after midnight. .SATURDAY...East winds 15 to 20 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 6 seconds. Scattered showers. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Numerous showers. .SUNDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. .SUNDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. .MONDAY...East winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Numerous showers in the morning, then scattered showers and thunderstorms in the afternoon. .MONDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ723-310915- Anegada Passage east of Virgin Gorda and Saint Croix south to 17N- 424 PM AST Wed Jul 30 2025 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds and northeast 3 feet at 8 seconds. Scattered showers. .THURSDAY...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 6 seconds. Scattered showers. .THURSDAY NIGHT...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 6 seconds. Scattered showers. .FRIDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at 7 seconds and northeast 1 foot at 11 seconds. Scattered showers. .FRIDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at 7 seconds and northeast 1 foot at 10 seconds. Scattered showers. .SATURDAY...East winds 15 to 20 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 8 seconds. Scattered showers. .SATURDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .SUNDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .SUNDAY NIGHT...East winds around 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Numerous showers. .MONDAY...East winds 15 to 20 knots. Seas around 5 feet, occasionally to 6 feet. Numerous showers, mainly in the morning. .MONDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. $$ AMZ726-310915- Coastal waters east of Puerto Rico, around Vieques, and around and just north of Culebra and Saint John- 424 PM AST Wed Jul 30 2025 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds. Isolated showers. .THURSDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers. .THURSDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds. Scattered showers. .FRIDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 6 seconds. Scattered showers. .FRIDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. Scattered showers. .SATURDAY...East winds 15 to 20 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 6 seconds. Scattered showers. .SATURDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Numerous showers. .SUNDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. .SUNDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. .MONDAY...East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Numerous showers in the morning, then showers and scattered thunderstorms in the afternoon. .MONDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ733-310915- Caribbean waters of Puerto Rico from 10 NM to 17N, including the coastal waters of Saint Croix- 424 PM AST Wed Jul 30 2025 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...East winds 15 to 20 knots with gusts up to 30 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. Scattered showers. .THURSDAY...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 6 seconds. Scattered showers. .THURSDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 6 seconds. Scattered showers. .FRIDAY...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 6 seconds. Scattered showers. .FRIDAY NIGHT...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. Scattered showers. .SATURDAY...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. .SATURDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet, occasionally to 5 feet. Numerous showers. .SUNDAY...Southeast winds around 15 knots. Seas around 4 feet, occasionally to 5 feet. Scattered showers in the morning, then numerous showers in the afternoon. .SUNDAY NIGHT...East winds around 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Numerous showers. .MONDAY...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Numerous showers, mainly in the morning. .MONDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. $$ AMZ735-310915- Coastal Waters of Southern Puerto Rico out 10 NM- 424 PM AST Wed Jul 30 2025 .TONIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds. Isolated showers this evening, then scattered showers after midnight. Isolated showers late. .THURSDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers after midnight. .FRIDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 6 seconds. Scattered showers. .FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 6 seconds. Scattered showers. .SATURDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 6 seconds. .SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet, occasionally to 4 feet. Numerous showers. .SUNDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers in the morning, then numerous showers in the afternoon. .SUNDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. .MONDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Showers and scattered thunderstorms in the afternoon. .MONDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Winds and seas higher in and near thunderstorms. $$ AMZ741-310915- Mona Passage Southward to 17N- 424 PM AST Wed Jul 30 2025 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots, increasing to 15 to 20 knots with gusts up to 30 knots late this evening and overnight. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 7 seconds. Isolated showers this evening, then scattered showers after midnight. .THURSDAY...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 6 seconds. Scattered showers in the morning. .THURSDAY NIGHT...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 6 seconds. .FRIDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. .FRIDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. Scattered showers. .SATURDAY...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. .SATURDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. .SUNDAY...Southeast winds around 15 knots. Seas around 4 feet, occasionally to 5 feet. .SUNDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. .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. .MONDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. $$ AMZ742-310915- Coastal Waters of Northwestern Puerto Rico out 10 NM- 424 PM AST Wed Jul 30 2025 .TONIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots late. Gusts up to 25 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. Isolated showers early this evening. .THURSDAY...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 6 seconds and southeast 1 foot at 6 seconds. Numerous showers in the afternoon. .THURSDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: Northeast 2 feet at 6 seconds and south 1 foot at 6 seconds. Scattered showers in the evening. .FRIDAY...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: Northeast 2 feet at 7 seconds and south 1 foot at 5 seconds. Numerous showers in the afternoon. .FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 6 seconds and south 1 foot at 5 seconds. Scattered showers in the evening. .SATURDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 7 seconds and southeast 1 foot at 6 seconds. Numerous showers in the afternoon. .SATURDAY NIGHT...East winds 5 to 10 knots, becoming southeast 10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. .SUNDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Numerous showers in the afternoon. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally to 4 feet. .MONDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet, occasionally to 4 feet. Numerous showers in the afternoon. .MONDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. $$ AMZ745-310915- Coastal Waters of Southwestern Puerto Rico out 10 NM- 424 PM AST Wed Jul 30 2025 .TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds and north 1 foot at 4 seconds. Numerous showers early this evening. .THURSDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at 6 seconds. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds. .FRIDAY...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: Southeast 3 feet at 5 seconds. .FRIDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: Southeast 2 feet at 6 seconds. .SATURDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 6 seconds. Scattered showers in the afternoon. .SATURDAY NIGHT...East winds 5 to 10 knots, becoming southeast 10 to 15 knots with gusts up to 20 knots after midnight. Seas around 2 feet. .SUNDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet, occasionally to 4 feet. Scattered showers in the afternoon. .SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet, occasionally to 4 feet. .MONDAY...East winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers in the afternoon. .MONDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally to 4 feet. $$