Coastal Waters Forecast
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
489 FZCA52 TJSJ 262043 CWFSJU Coastal Waters Forecast National Weather Service San Juan PR 443 PM AST Fri Sep 26 2025 Puerto Rico and the U.S. Virgin Islands Waters AMZ700-270915- 443 PM AST Fri Sep 26 2025 .SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS... Gentle to light winds will persist due to the interaction between Invest 94L and Humberto. 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 pulses of northerly swells from Humberto moves across the local Atlantic waters, deteriorating marine conditions across the region. $$ AMZ711-270915- Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- 443 PM AST Fri Sep 26 2025 .TONIGHT...East winds 5 to 10 knots. Seas 4 to 5 feet. Wave Detail: Northeast 5 feet at 10 seconds. Isolated thunderstorms. Scattered showers until early morning, then numerous showers late. .SATURDAY...East winds 5 to 10 knots, becoming southeast in the afternoon. Seas around 5 feet. Wave Detail: East 5 feet at 11 seconds. Scattered showers in the morning. .SATURDAY NIGHT...South winds 5 to 10 knots. Seas 5 to 7 feet. Wave Detail: Northeast 6 feet at 11 seconds. Scattered showers. .SUNDAY...South winds 10 to 15 knots with gusts up to 20 knots. Seas around 6 feet. Wave Detail: Northeast 6 feet at 12 seconds. Scattered showers in the morning. .SUNDAY NIGHT...South winds 10 to 15 knots with gusts up to 20 knots. Seas 5 to 6 feet. Wave Detail: Northeast 5 feet at 11 seconds and south 3 feet at 4 seconds. Scattered showers. .MONDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 5 feet. Wave Detail: North 4 feet at 10 seconds and south 3 feet at 4 seconds. Scattered showers. .MONDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Scattered showers. .TUESDAY...Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas 3 to 4 feet. .TUESDAY NIGHT...Southeast winds around 10 knots. Seas 3 to 4 feet. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 3 feet. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 3 feet. Winds and seas higher in and near thunderstorms. $$ AMZ712-270915- Coastal Waters of Northern Puerto Rico out 10 NM- 443 PM AST Fri Sep 26 2025 .TONIGHT...Southeast winds 5 to 10 knots. Seas around 4 feet. Wave Detail: Northeast 4 feet at 10 seconds and northeast 3 feet at 7 seconds. Isolated thunderstorms this evening. Scattered showers. .SATURDAY...East winds 5 to 10 knots. Seas 4 to 5 feet. Wave Detail: Northeast 5 feet at 11 seconds. Numerous showers in the afternoon. .SATURDAY NIGHT...South winds around 5 knots. Seas 4 to 5 feet. Wave Detail: Northeast 5 feet at 11 seconds. .SUNDAY...Southeast winds 5 to 10 knots. Seas 5 to 6 feet. Wave Detail: Northeast 6 feet at 12 seconds. Numerous showers in the afternoon. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 5 to 6 feet. Wave Detail: Northeast 6 feet at 11 seconds. Scattered showers. .MONDAY...Southeast winds 5 to 10 knots, becoming east 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas 4 to 5 feet. Wave Detail: Northeast 5 feet at 11 seconds. 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 3 to 4 feet. Scattered showers in the afternoon. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers in the afternoon. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$ AMZ716-270915- Coastal Waters from Cabo San Juan to the waters between Anegada Island and Virgin Gorda and North 10 NM- 443 PM AST Fri Sep 26 2025 .TONIGHT...East winds around 5 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 10 seconds. Scattered showers this evening. Isolated thunderstorms late this evening and overnight. Numerous showers after midnight. .SATURDAY...East winds around 5 knots, becoming south in the afternoon. Seas 2 to 4 feet. Wave Detail: Northeast 3 feet at 11 seconds. Scattered showers. .SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail: Northeast 4 feet at 11 seconds and south 1 foot at 2 seconds. Scattered showers. .SUNDAY...South winds 10 to 15 knots. Seas 4 to 6 feet. Wave Detail: Northeast 5 feet at 11 seconds. Scattered showers. .SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 5 feet. Wave Detail: Northeast 5 feet at 11 seconds and south 2 feet at 3 seconds. Scattered showers. .MONDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: Northeast 4 feet at 10 seconds and southeast 2 feet at 3 seconds. Numerous showers, mainly in the morning. .MONDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Scattered showers. .TUESDAY...Southeast winds around 10 knots. Seas 3 to 4 feet. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 3 feet. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$ AMZ723-270915- Anegada Passage east of Virgin Gorda and Saint Croix south to 17N- 443 PM AST Fri Sep 26 2025 .TONIGHT...East winds around 5 knots. Seas 3 to 4 feet. Wave Detail: Northeast 4 feet at 11 seconds and south 2 feet at 6 seconds. Isolated showers this evening, then scattered showers with isolated thunderstorms after midnight. .SATURDAY...Southeast winds around 5 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. 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: Northeast 4 feet at 11 seconds and south 3 feet at 5 seconds. Scattered showers. .MONDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet. Wave Detail: Southeast 3 feet at 6 seconds and north 3 feet at 10 seconds. Numerous showers, mainly in the morning. .MONDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet. .TUESDAY...East winds around 10 knots. Seas around 3 feet. .TUESDAY NIGHT...Southeast winds around 10 knots. Seas 2 to 3 feet. Scattered showers. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. Winds and seas higher in and near thunderstorms. $$ AMZ726-270915- Coastal waters east of Puerto Rico, around Vieques, and around and just north of Culebra and Saint John- 443 PM AST Fri Sep 26 2025 .TONIGHT...East winds around 5 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds and east 2 feet at 10 seconds. Scattered showers. Isolated thunderstorms late this evening and overnight. .SATURDAY...East winds around 5 knots, becoming south in the afternoon. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds and east 2 feet at 10 seconds. Scattered showers in the morning. .SATURDAY NIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds and northeast 2 feet at 10 seconds. .SUNDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 5 seconds and northeast 2 feet at 10 seconds. Scattered showers in the afternoon. .SUNDAY NIGHT...Southeast winds around 10 knots with gusts up to 20 knots. Seas 2 to 4 feet. Wave Detail: Southeast 2 feet at 6 seconds and northeast 1 foot at 10 seconds. Scattered showers. .MONDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 4 feet. Wave Detail: East 2 feet at 6 seconds and northeast 2 feet at 10 seconds. Numerous showers. .MONDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 3 feet. Scattered showers. .TUESDAY...Southeast winds around 10 knots. Seas 2 to 3 feet. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. Winds and seas higher in and near thunderstorms. $$ AMZ733-270915- Caribbean waters of Puerto Rico from 10 NM to 17N, including the coastal waters of Saint Croix- 443 PM AST Fri Sep 26 2025 .TONIGHT...East winds 5 to 10 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 7 seconds and northeast 2 feet at 10 seconds. Scattered showers with isolated thunderstorms this evening, then isolated showers after midnight. Scattered showers late. .SATURDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: South 2 feet at 6 seconds and northeast 2 feet at 10 seconds. .SATURDAY NIGHT...South winds 5 to 10 knots. Seas around 3 feet. Wave Detail: South 2 feet at 6 seconds and northeast 2 feet at 10 seconds. .SUNDAY...Southeast winds 5 to 10 knots. Seas around 3 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 11 seconds. Scattered showers. .MONDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds and northeast 1 foot at 10 seconds. Numerous showers, mainly in the morning. .MONDAY NIGHT...East winds around 10 knots. Seas 3 to 4 feet. Scattered showers. .TUESDAY...East winds around 10 knots. Seas around 3 feet. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. Winds and seas higher in and near thunderstorms. $$ AMZ735-270915- Coastal Waters of Southern Puerto Rico out 10 NM- 443 PM AST Fri Sep 26 2025 .TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 7 seconds. Scattered showers with isolated thunderstorms this evening, then isolated showers after midnight. .SATURDAY...East winds 5 to 10 knots, becoming southeast in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds. .SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds and east 1 foot at 9 seconds. .SUNDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. .SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 5 seconds. .MONDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. Scattered showers in the morning. .MONDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet. .TUESDAY...East winds 5 to 10 knots. Seas around 3 feet. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Winds and seas higher in and near thunderstorms. $$ AMZ741-270915- Mona Passage Southward to 17N- 443 PM AST Fri Sep 26 2025 .TONIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 7 seconds and north 2 feet at 11 seconds. Numerous showers with isolated thunderstorms this evening, then isolated showers after midnight. .SATURDAY...Southeast winds 10 to 15 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 5 to 10 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds and northeast 2 feet at 10 seconds. .SUNDAY...Southeast winds 10 to 15 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 9 seconds. .SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 6 feet. Wave Detail: Southeast 3 feet at 5 seconds and northeast 2 feet at 10 seconds. .MONDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 6 feet. Wave Detail: Southeast 3 feet at 6 seconds and northeast 3 feet at 11 seconds. .MONDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 4 to 5 feet. Numerous showers. .TUESDAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet. Scattered showers. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. .WEDNESDAY...Southeast winds 10 to 15 knots. Seas around 3 feet. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 3 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ742-270915- Coastal Waters of Northwestern Puerto Rico out 10 NM- 443 PM AST Fri Sep 26 2025 .TONIGHT...East winds around 5 knots. Seas 2 to 4 feet. Wave Detail: South 2 feet at 6 seconds and north 2 feet at 10 seconds. Scattered showers early this evening, then isolated showers late this evening and early morning. .SATURDAY...Southeast winds around 5 knots, becoming south with gusts up to 20 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds and northeast 2 feet at 10 seconds. .SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds and northeast 2 feet at 9 seconds. .SUNDAY...South winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 5 feet. Wave Detail: South 3 feet at 4 seconds and northeast 3 feet at 10 seconds. .SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 5 feet. Wave Detail: Northeast 4 feet at 12 seconds and south 3 feet at 4 seconds. .MONDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 5 feet. Wave Detail: Northeast 4 feet at 12 seconds and south 3 feet at 4 seconds. Scattered showers in the afternoon. .MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 5 feet. .TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet. Numerous showers in the afternoon. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. $$ AMZ745-270915- Coastal Waters of Southwestern Puerto Rico out 10 NM- 443 PM AST Fri Sep 26 2025 .TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds and northwest 1 foot at 11 seconds. Scattered showers with isolated thunderstorms early this evening, then isolated showers late this evening. .SATURDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds. .SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds. .SUNDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds. .SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. .MONDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 5 seconds. .MONDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. .TUESDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers in the afternoon. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. .WEDNESDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$