Coastal Waters Forecast
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
433 FZCA52 TJSJ 060824 CWFSJU Coastal Waters Forecast National Weather Service San Juan PR 424 AM AST Sun Sep 6 2026 Puerto Rico and the U.S. Virgin Islands Waters Seas are provided as a range of the average height of the highest 1/3 of the waves...along with the occasional height of the average highest 10 percent of the waves. AMZ700-062115- 424 AM AST Sun Sep 6 2026 .Synopsis for Puerto Rico and the U.S. Virgin Islands Waters... Light to moderate southeast winds are expected to continue through at least tomorrow, Monday. From Tuesday onward, winds are expected to become moderate to fresh as a surface high pressure strengthens over the central Atlantic, leading to choppy seas of up to 6 feet and east winds reaching 15 to 20 knots with higher gusts. Moisture associated with a tropical wave will continue to bring scattered showers and isolated thunderstorms over the regional waters today. $$ AMZ711-062115- Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- 424 AM AST Sun Sep 6 2026 .TODAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. Scattered showers with isolated thunderstorms early this morning. Isolated showers late this morning and early afternoon, then scattered showers late. .TONIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds. Scattered showers in the evening. .MONDAY...Southeast winds 10 to 15 knots, becoming east 15 to 20 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 8 seconds and northeast 2 feet at 12 seconds. Scattered showers. .MONDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 6 seconds and northeast 2 feet at 11 seconds. Scattered showers. .TUESDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 6 seconds and northeast 2 feet at 11 seconds. .TUESDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at 6 seconds and northeast 2 feet at 11 seconds. .WEDNESDAY...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Scattered showers. .WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. .THURSDAY...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. .THURSDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Winds and seas higher in and near thunderstorms. $$ AMZ712-062115- Coastal Waters of Northern Puerto Rico out 10 NM- 424 AM AST Sun Sep 6 2026 .TODAY...East winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots this afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds. Scattered showers with isolated thunderstorms early this morning, then isolated showers late this morning. Scattered showers with isolated thunderstorms this afternoon. .TONIGHT...Southeast winds 5 to 10 knots. Seas around 3 feet. Wave Detail: Northeast 3 feet at 8 seconds. Scattered showers in the evening. .MONDAY...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 and north 1 foot at 9 seconds. Scattered showers in the afternoon. .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 7 seconds and northeast 2 feet at 11 seconds. Scattered showers in the evening. .TUESDAY...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: East 4 feet at 6 seconds and northeast 2 feet at 11 seconds. Scattered showers in the morning. .TUESDAY 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: East 4 feet at 6 seconds and northeast 2 feet at 11 seconds. .WEDNESDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .WEDNESDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .THURSDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Winds and seas higher in and near thunderstorms. $$ AMZ716-062115- Coastal Waters from Cabo San Juan to the waters between Anegada Island and Virgin Gorda and North 10 NM- 424 AM AST Sun Sep 6 2026 .TODAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 4 seconds and east 2 feet at 7 seconds. Scattered showers with isolated thunderstorms. .TONIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds and southeast 2 feet at 4 seconds. Scattered showers. .MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 4 seconds and east 2 feet at 7 seconds. Scattered showers. .MONDAY NIGHT...East winds around 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds and northeast 2 feet at 11 seconds. Scattered showers. .TUESDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds and northeast 2 feet at 11 seconds. Scattered showers. .TUESDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 6 seconds and northeast 2 feet at 10 seconds. .WEDNESDAY...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. .THURSDAY...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .THURSDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Winds and seas higher in and near thunderstorms. $$ AMZ723-062115- Anegada Passage east of Virgin Gorda and Saint Croix south to 17N- 424 AM AST Sun Sep 6 2026 .TODAY...Southeast winds 10 to 15 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, mainly this morning. .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers. .MONDAY...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 northeast 1 foot at 12 seconds. Scattered showers in the morning. .MONDAY NIGHT...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 northeast 2 feet at 11 seconds. .TUESDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas around 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 6 seconds and northeast 2 feet at 10 seconds. .TUESDAY 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 6 seconds and northeast 2 feet at 11 seconds. .WEDNESDAY...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Scattered showers in the morning. .WEDNESDAY NIGHT...East winds around 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Scattered showers. .THURSDAY...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. $$ AMZ726-062115- Coastal waters east of Puerto Rico, around Vieques, and around and just north of Culebra and Saint John- 424 AM AST Sun Sep 6 2026 .TODAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 7 seconds and southeast 1 foot at 4 seconds. Scattered showers. Isolated thunderstorms early this morning. Isolated thunderstorms this afternoon. .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. Scattered showers. .MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers. .MONDAY NIGHT...East winds around 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers. .TUESDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 6 seconds. Scattered showers in the morning. .TUESDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 6 seconds. .WEDNESDAY...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Scattered showers. .THURSDAY...East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Scattered showers. .THURSDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Winds and seas higher in and near thunderstorms. $$ AMZ733-062115- Caribbean waters of Puerto Rico from 10 NM to 17N, including the coastal waters of Saint Croix- 424 AM AST Sun Sep 6 2026 .TODAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds and east 2 feet at 8 seconds. Isolated thunderstorms early this morning. Scattered showers. .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers after midnight. .MONDAY...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. .MONDAY NIGHT...East winds 10 to 15 knots, increasing to 15 to 20 knots after midnight. Seas 3 to 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 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 6 seconds. Scattered showers in the morning. .TUESDAY 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. .WEDNESDAY...East winds 15 to 20 knots. Seas around 5 feet, occasionally to 6 feet. Scattered showers. .WEDNESDAY NIGHT...East winds around 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Scattered showers. .THURSDAY...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Scattered showers. .THURSDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Winds and seas higher in and near thunderstorms. $$ AMZ735-062115- Coastal Waters of Southern Puerto Rico out 10 NM- 424 AM AST Sun Sep 6 2026 .TODAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 2 feet. Wave Detail: East 2 feet at 6 seconds. Isolated thunderstorms early this morning. Scattered showers this morning, then isolated showers this afternoon. .TONIGHT...East winds around 10 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 6 seconds. Scattered showers in the evening. .MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 6 seconds. .MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 7 seconds. .TUESDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 6 seconds. .TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. .WEDNESDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Numerous showers in the morning. .WEDNESDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. .THURSDAY...East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. .THURSDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ741-062115- Mona Passage Southward to 17N- 424 AM AST Sun Sep 6 2026 .TODAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers early this morning. Isolated showers this afternoon. .TONIGHT...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. Scattered showers in the evening. .MONDAY...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. .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 7 seconds. .TUESDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 6 seconds. .TUESDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at 6 seconds and northeast 2 feet at 11 seconds. .WEDNESDAY...East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. .WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. .THURSDAY...East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. $$ AMZ742-062115- Coastal Waters of Northwestern Puerto Rico out 10 NM- 424 AM AST Sun Sep 6 2026 .TODAY...East winds around 5 knots, becoming northeast this afternoon. Seas around 2 feet. Wave Detail: Northeast 2 feet at 5 seconds and south 1 foot at 4 seconds. Isolated showers late this morning. Scattered showers with isolated thunderstorms this afternoon. .TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Northeast 2 feet at 7 seconds and south 1 foot at 4 seconds. .MONDAY...East winds around 5 knots, becoming northeast in the afternoon. Seas around 2 feet. Wave Detail: Northeast 2 feet at 7 seconds and south 1 foot at 5 seconds. Scattered showers in the afternoon. .MONDAY NIGHT...East winds around 5 knots, increasing to 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 7 seconds and south 1 foot at 5 seconds. Scattered showers in the evening. .TUESDAY...East winds around 5 knots, becoming northeast with gusts up to 20 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 11 seconds and south 1 foot at 6 seconds. Numerous showers in the afternoon. .TUESDAY NIGHT...East winds 5 to 10 knots with gusts up to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 2 feet at 11 seconds and south 1 foot at 6 seconds. Scattered showers. .WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Numerous showers in the afternoon. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. .THURSDAY...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Numerous showers in the afternoon. .THURSDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Winds and seas higher in and near thunderstorms. $$ AMZ745-062115- Coastal Waters of Southwestern Puerto Rico out 10 NM- 424 AM AST Sun Sep 6 2026 .TODAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 4 seconds. Isolated showers early this morning. Isolated showers this afternoon. .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 4 seconds. .MONDAY...Southeast winds 10 to 15 knots with gusts up to 25 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds. .MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds. .TUESDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds. Scattered showers in the afternoon. .TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. .WEDNESDAY...East winds 5 to 10 knots, increasing to 15 to 20 knots in the afternoon. Seas 2 to 3 feet. Scattered showers in the afternoon. .WEDNESDAY NIGHT...East winds 15 to 20 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet. .THURSDAY...East winds 10 to 15 knots, becoming southeast 15 to 20 knots in the afternoon. Seas 2 to 3 feet. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds 15 to 20 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. $$