Coastal Waters Forecast
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
480 FZCA52 TJSJ 260807 CWFSJU Coastal Waters Forecast National Weather Service San Juan PR 407 AM AST Fri Sep 26 2025 Puerto Rico and the U.S. Virgin Islands Waters AMZ700-262030- 407 AM AST Fri Sep 26 2025 .SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS... From today, gentle to light will persist as the interaction of the Invest 94L and the tropical Humberto across the region. Therefore, mariners can expect surface winds up to 10 knots with seas up to 5 feet. An increase in seas is forecast for the upcoming weekend as a pulse of a brief northerly swell from a tropical system moves into the local offshore Atlantic waters deteriorating marine conditions across the Atlantic waters. $$ AMZ711-262030- Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- 407 AM AST Fri Sep 26 2025 .TODAY...East winds 5 to 10 knots. Seas 4 to 5 feet. Wave Detail: Northeast 5 feet at 10 seconds and east 4 feet at 7 seconds. Isolated thunderstorms. Numerous showers, mainly this morning. .TONIGHT...East winds 5 to 10 knots with gusts up to 20 knots. Seas 4 to 5 feet. Wave Detail: Northeast 5 feet at 10 seconds. Scattered showers in the evening, then numerous showers after midnight. .SATURDAY...Southeast winds 5 to 10 knots. Seas around 5 feet. Wave Detail: Northeast 5 feet at 11 seconds. Scattered showers in the morning. .SATURDAY NIGHT...Southwest winds 5 to 10 knots with gusts up to 20 knots. Seas 5 to 7 feet. Wave Detail: Northeast 6 feet at 11 seconds. Scattered showers. .SUNDAY...South winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 6 feet. Wave Detail: Northeast 6 feet at 11 seconds and south 3 feet at 4 seconds. Scattered showers in the morning. .SUNDAY NIGHT...South winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 6 feet. Wave Detail: Northeast 5 feet at 11 seconds and south 3 feet at 4 seconds. Scattered showers. .MONDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Scattered showers. .MONDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Scattered showers. .TUESDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Winds and seas higher in and near thunderstorms. $$ AMZ712-262030- Coastal Waters of Northern Puerto Rico out 10 NM- 407 AM AST Fri Sep 26 2025 .TODAY...East winds around 5 knots, increasing to 5 to 10 knots this afternoon. Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at 7 seconds and north 3 feet at 11 seconds. Isolated thunderstorms early this morning. Isolated showers this morning, then numerous showers with isolated thunderstorms this afternoon. .TONIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: Northeast 4 feet at 10 seconds and northeast 3 feet at 7 seconds. Scattered showers. .SATURDAY...East winds 5 to 10 knots. Seas 4 to 5 feet. Wave Detail: Northeast 5 feet at 11 seconds. Scattered showers in the afternoon. .SATURDAY NIGHT...Southwest winds 5 to 10 knots, becoming south after midnight. Seas 4 to 5 feet. Wave Detail: Northeast 5 feet at 11 seconds. .SUNDAY...South winds around 5 knots, increasing to 5 to 10 knots with gusts up to 20 knots in the afternoon. Seas 5 to 6 feet. Wave Detail: Northeast 6 feet at 11 seconds. Numerous showers in the afternoon. .SUNDAY NIGHT...South winds 5 to 10 knots. Seas 4 to 6 feet. Wave Detail: Northeast 6 feet at 11 seconds. Scattered showers. .MONDAY...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 4 to 5 feet. Numerous showers in the afternoon. .MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. .TUESDAY...Southeast winds 5 to 10 knots, becoming east 10 to 15 knots in the afternoon. Seas around 3 feet. Scattered showers in the afternoon. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$ AMZ716-262030- Coastal Waters from Cabo San Juan to the waters between Anegada Island and Virgin Gorda and North 10 NM- 407 AM AST Fri Sep 26 2025 .TODAY...East winds around 5 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 10 seconds and northeast 2 feet at 7 seconds. Isolated thunderstorms. .TONIGHT...East winds around 5 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 10 seconds. Scattered showers in the evening, then numerous showers after midnight. .SATURDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: Northeast 3 feet at 10 seconds. Scattered showers. .SATURDAY NIGHT...Southwest winds around 10 knots. Seas 2 to 4 feet. Wave Detail: Northeast 4 feet at 11 seconds and southwest 2 feet at 3 seconds. Scattered showers after midnight. .SUNDAY...South winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 6 feet. Wave Detail: Northeast 5 feet at 11 seconds and southwest 2 feet at 3 seconds. Scattered showers. .SUNDAY NIGHT...South winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 5 feet. Wave Detail: Northeast 5 feet at 11 seconds and south 2 feet at 3 seconds. Scattered showers. .MONDAY...Southeast winds around 10 knots. Seas 3 to 4 feet. Numerous showers, mainly in the morning. .MONDAY NIGHT...Southeast winds around 10 knots. Seas 3 to 4 feet. Scattered showers. .TUESDAY...Southeast winds around 10 knots. Seas 3 to 4 feet. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$ AMZ723-262030- Anegada Passage east of Virgin Gorda and Saint Croix south to 17N- 407 AM AST Fri Sep 26 2025 .TODAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: Northeast 4 feet at 11 seconds and south 2 feet at 6 seconds. Isolated thunderstorms. .TONIGHT...East winds around 5 knots. Seas 3 to 4 feet. Wave Detail: Northeast 4 feet at 10 seconds and south 2 feet at 6 seconds. Scattered showers after midnight. .SATURDAY...Southeast winds 5 to 10 knots, becoming south in the afternoon. Seas 3 to 4 feet. Wave Detail: Northeast 4 feet at 11 seconds and south 2 feet at 6 seconds. Scattered showers in the morning. .SATURDAY NIGHT...South winds 5 to 10 knots. Seas 3 to 5 feet. Wave Detail: Northeast 4 feet at 11 seconds and south 2 feet at 6 seconds. Scattered showers. .SUNDAY...South winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 5 feet. Wave Detail: Northeast 4 feet at 11 seconds and south 3 feet at 5 seconds. Scattered showers. .SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 5 feet. Wave Detail: South 3 feet at 5 seconds and northeast 3 feet at 10 seconds. Scattered showers. .MONDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Numerous showers, mainly in the morning. .MONDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet. .TUESDAY...Southeast winds around 10 knots. Seas around 3 feet. .TUESDAY NIGHT...Southeast winds around 10 knots. Seas 2 to 3 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ726-262030- Coastal waters east of Puerto Rico, around Vieques, and around and just north of Culebra and Saint John- 407 AM AST Fri Sep 26 2025 .TODAY...Southeast winds around 5 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 7 seconds and northeast 2 feet at 10 seconds. Isolated thunderstorms. .TONIGHT...East winds around 5 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds and east 2 feet at 10 seconds. Scattered showers. .SATURDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds and east 2 feet at 10 seconds. Scattered showers. .SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds and northeast 2 feet at 10 seconds. .SUNDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 5 seconds and northeast 2 feet at 10 seconds. Scattered showers in the afternoon. .SUNDAY NIGHT...South winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds and northeast 1 foot at 10 seconds. Scattered showers. .MONDAY...Southeast winds around 10 knots. Seas 2 to 4 feet. Numerous showers. .MONDAY NIGHT...Southeast winds around 10 knots. Seas around 3 feet. Scattered showers. .TUESDAY...Southeast winds around 10 knots. Seas 2 to 3 feet. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ733-262030- Caribbean waters of Puerto Rico from 10 NM to 17N, including the coastal waters of Saint Croix- 407 AM AST Fri Sep 26 2025 .TODAY...Southeast winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots with gusts up to 20 knots late this morning and afternoon. Seas 3 to 4 feet. Wave Detail: East 3 feet at 7 seconds. Numerous showers with isolated thunderstorms early this morning, then scattered showers late this morning and afternoon. Isolated thunderstorms this afternoon. .TONIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds and northeast 2 feet at 10 seconds. Scattered showers in the evening. .SATURDAY...Southeast winds 5 to 10 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds and northeast 2 feet at 10 seconds. .SATURDAY NIGHT...South winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: South 3 feet at 6 seconds and northeast 2 feet at 10 seconds. .SUNDAY...South winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: South 3 feet at 5 seconds and northeast 2 feet at 10 seconds. .SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 5 seconds and northeast 2 feet at 10 seconds. Scattered showers. .MONDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Numerous showers, mainly in the morning. .MONDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Scattered showers. .TUESDAY...Southeast winds around 10 knots. Seas around 3 feet. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ735-262030- Coastal Waters of Southern Puerto Rico out 10 NM- 407 AM AST Fri Sep 26 2025 .TODAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 7 seconds. Numerous showers this morning. Isolated thunderstorms. Scattered showers this afternoon. .TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 7 seconds. Scattered showers in the evening. .SATURDAY...East winds 5 to 10 knots, becoming southeast in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. .SATURDAY NIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds. .SUNDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds. .SUNDAY NIGHT...Southeast winds 5 to 10 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 5 seconds. .MONDAY...Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Scattered showers in the morning. .MONDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet. .TUESDAY...Southeast winds 5 to 10 knots. Seas around 3 feet. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$ AMZ741-262030- Mona Passage Southward to 17N- 407 AM AST Fri Sep 26 2025 .TODAY...Southeast 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: Southeast 4 feet at 7 seconds and north 2 feet at 11 seconds. Scattered showers this morning. Isolated thunderstorms. Numerous showers this afternoon. .TONIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet. Wave Detail: Southeast 3 feet at 7 seconds and north 2 feet at 11 seconds. Numerous showers in the evening. .SATURDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 7 seconds and north 2 feet at 10 seconds. .SATURDAY NIGHT...Southeast winds around 10 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds and northeast 2 feet at 10 seconds. .SUNDAY...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds and northeast 2 feet at 9 seconds. .SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 5 feet. Wave Detail: Southeast 3 feet at 5 seconds and northeast 2 feet at 11 seconds. .MONDAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet. .MONDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Numerous showers. .TUESDAY...Southeast winds around 10 knots. Seas 3 to 5 feet. Scattered showers. .TUESDAY NIGHT...Southeast winds around 10 knots. Seas 3 to 4 feet. Winds and seas higher in and near thunderstorms. $$ AMZ742-262030- Coastal Waters of Northwestern Puerto Rico out 10 NM- 407 AM AST Fri Sep 26 2025 .TODAY...East winds 5 to 10 knots, diminishing to around 5 knots late. Seas 2 to 4 feet. Wave Detail: South 2 feet at 6 seconds and north 2 feet at 11 seconds. Numerous showers with isolated thunderstorms this afternoon. .TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds and north 2 feet at 10 seconds. Scattered showers in the evening. .SATURDAY...Southeast winds 5 to 10 knots, becoming south 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds and northeast 2 feet at 10 seconds. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: South 2 feet at 5 seconds and northeast 2 feet at 9 seconds. .SUNDAY...South winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: South 3 feet at 5 seconds and northeast 3 feet at 11 seconds. .SUNDAY NIGHT...South winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 5 feet. Wave Detail: Northeast 4 feet at 11 seconds and south 3 feet at 4 seconds. .MONDAY...South winds 10 to 15 knots. Seas 3 to 5 feet. Scattered showers in the afternoon. .MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 5 feet. .TUESDAY...Southeast winds around 5 knots. Seas 2 to 4 feet. Numerous showers in the afternoon. .TUESDAY NIGHT...Southeast winds around 5 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$ AMZ745-262030- Coastal Waters of Southwestern Puerto Rico out 10 NM- 407 AM AST Fri Sep 26 2025 .TODAY...Southeast winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots late. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds and northwest 1 foot at 11 seconds. Isolated showers this morning, then scattered showers early this afternoon. Numerous showers with isolated thunderstorms late. .TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds and northwest 1 foot at 11 seconds. Scattered showers in the evening. .SATURDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. .SATURDAY NIGHT...Southeast winds around 10 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. .SUNDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds. .SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 5 seconds. .MONDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. .MONDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet. .TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers in the afternoon. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$