Coastal Waters Forecast
Issued by NWS San Juan, PR
Issued by NWS San Juan, PR
783 FZCA52 TJSJ 022009 CWFSJU Coastal Waters Forecast National Weather Service San Juan PR 409 PM AST Fri Oct 2 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. AMZ700-030915- 409 PM AST Fri Oct 2 2026 .Synopsis for Puerto Rico and the U.S. Virgin Islands Waters... Surface high pressure north of the region will maintain moderate to locally fresh easterly trade winds through at least early tonight, producing up to choppy conditions. The pressure gradient will then relax over the weekend, promoting more moderate winds. This will in turn result in a more moderate chop through early next week. Lingering moisture behind yesterday`s disturbance and a trough that will move to the west and northwest of the local area will support showers and thunderstorms into the weekend. Thunderstorms may produce locally hazardous conditions for small craft, including gusty winds, higher seas, lightning, and reduced visibility. $$ AMZ711-030915- Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- 409 PM AST Fri Oct 2 2026 .TONIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 6 seconds and northeast 3 feet at 12 seconds. Scattered showers early this evening. Isolated showers late this evening and early morning, then scattered showers with isolated thunderstorms late. .SATURDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 5 seconds and northeast 3 feet at 11 seconds. .SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 6 seconds and northeast 3 feet at 11 seconds. Scattered showers. .SUNDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 6 seconds and northeast 2 feet at 11 seconds. .SUNDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds and northeast 2 feet at 11 seconds. .MONDAY...East winds around 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds and northeast 2 feet at 11 seconds. .MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. .TUESDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. .TUESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. .WEDNESDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Winds and seas higher in and near thunderstorms. $$ AMZ712-030915- Coastal Waters of Northern Puerto Rico out 10 NM- 409 PM AST Fri Oct 2 2026 .TONIGHT...East winds 10 to 15 knots with gusts up to 25 knots, diminishing to 5 to 10 knots late. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 6 seconds and northeast 2 feet at 12 seconds. Isolated showers until early morning, then scattered showers late. .SATURDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds and northeast 3 feet at 12 seconds. Scattered showers. .SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 5 seconds and northeast 3 feet at 11 seconds. Scattered showers in the evening. .SUNDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 25 knots in the afternoon. Seas around 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 6 seconds and northeast 3 feet at 11 seconds. .SUNDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. 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. .MONDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas around 3 feet. Wave Detail: Northeast 3 feet at 6 seconds and northeast 2 feet at 11 seconds. Scattered showers in the afternoon. .MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots after midnight. Seas around 3 feet. .TUESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers in the afternoon. .TUESDAY NIGHT...East winds 10 to 15 knots, becoming southeast 5 to 10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. .WEDNESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers in the afternoon. .WEDNESDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. $$ AMZ716-030915- Coastal Waters from Cabo San Juan to the waters between Anegada Island and Virgin Gorda and North 10 NM- 409 PM AST Fri Oct 2 2026 .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds and northeast 2 feet at 13 seconds. Scattered showers, mainly this evening. .SATURDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds and northeast 3 feet at 12 seconds. Scattered showers in the morning. .SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds and northeast 3 feet at 11 seconds. .SUNDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds and northeast 2 feet at 11 seconds. .SUNDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds and northeast 2 feet at 11 seconds. Scattered showers. .MONDAY...East winds around 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 6 seconds and northeast 3 feet at 11 seconds. Scattered showers in the afternoon. .MONDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet. .TUESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers. .TUESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers. .WEDNESDAY...East winds around 10 knots. Seas 2 to 3 feet. Scattered showers. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. $$ AMZ723-030915- Anegada Passage east of Virgin Gorda and Saint Croix south to 17N- 409 PM AST Fri Oct 2 2026 .TONIGHT...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 5 seconds and northeast 2 feet at 13 seconds. Scattered showers, mainly this evening. .SATURDAY...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 5 seconds and northeast 3 feet at 12 seconds. Scattered showers in the morning. .SATURDAY NIGHT...East winds around 15 knots with gusts up to 20 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 5 seconds and northeast 2 feet at 11 seconds. .SUNDAY...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 5 seconds and northeast 2 feet at 11 seconds. .SUNDAY 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 5 seconds and northeast 2 feet at 11 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 3 feet at 5 seconds and northeast 2 feet at 12 seconds. Scattered showers in the afternoon. .MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. Scattered showers. .TUESDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers in the morning. .TUESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. .WEDNESDAY...East winds 10 to 15 knots. Seas around 3 feet. Scattered showers. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet. $$ AMZ726-030915- Coastal waters east of Puerto Rico, around Vieques, and around and just north of Culebra and Saint John- 409 PM AST Fri Oct 2 2026 .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds and northeast 1 foot at 11 seconds. Scattered showers until early morning, then isolated showers late. .SATURDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds and northeast 1 foot at 10 seconds. Scattered showers in the morning. .SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds and northeast 1 foot at 10 seconds. Scattered showers in the evening. .SUNDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. Wave Detail: East 3 feet at 5 seconds. .SUNDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. Wave Detail: East 3 feet at 5 seconds. Scattered showers. .MONDAY...East winds around 10 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds. Scattered showers in the afternoon. .MONDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet. .TUESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers in the morning, then numerous showers in the afternoon. .TUESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers. .WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered showers in the morning, then numerous showers in the afternoon. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. $$ AMZ733-030915- Caribbean waters of Puerto Rico from 10 NM to 17N, including the coastal waters of Saint Croix- 409 PM AST Fri Oct 2 2026 .TONIGHT...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 6 seconds and northeast 1 foot at 11 seconds. Scattered showers. .SATURDAY...East winds around 15 knots with gusts up to 20 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 6 seconds and northeast 1 foot at 11 seconds. Scattered showers in the morning. .SATURDAY 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 6 seconds and northeast 1 foot at 11 seconds. Scattered showers after midnight. .SUNDAY...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 10 seconds. .SUNDAY 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 and northeast 1 foot at 10 seconds. Scattered showers. .MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. Wave Detail: East 3 feet at 6 seconds and northeast 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 around 3 feet. .TUESDAY...East winds 10 to 15 knots. Seas around 3 feet. Scattered showers in the morning. .TUESDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet. Scattered showers. .WEDNESDAY...East winds 10 to 15 knots. Seas around 3 feet. Numerous showers, mainly in the morning. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet. Scattered showers. $$ AMZ735-030915- Coastal Waters of Southern Puerto Rico out 10 NM- 409 PM AST Fri Oct 2 2026 .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds. Isolated showers this evening, then scattered showers after midnight. Isolated showers late. .SATURDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds. .SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 6 seconds. .SUNDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. .SUNDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 6 seconds. .MONDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at 6 seconds. .MONDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet. .TUESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. .WEDNESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Scattered showers in the morning. .WEDNESDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet. $$ AMZ741-030915- Mona Passage Southward to 17N- 409 PM AST Fri Oct 2 2026 .TONIGHT...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 6 seconds and north 2 feet at 13 seconds. Scattered showers early this evening. Isolated showers late this evening, then scattered showers after midnight. .SATURDAY...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 6 seconds and north 2 feet at 13 seconds. .SATURDAY 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 6 seconds and north 2 feet at 12 seconds. .SUNDAY...East winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at 6 seconds and north 2 feet at 12 seconds. Scattered showers in the afternoon. .SUNDAY NIGHT...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 and north 2 feet at 11 seconds. .MONDAY...East winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots in the afternoon. Seas around 3 feet. Wave Detail: East 3 feet at 6 seconds and north 2 feet at 11 seconds. Scattered showers in the afternoon. .MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. Scattered showers. .TUESDAY...East winds 10 to 15 knots. Seas around 3 feet. .TUESDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet. Scattered showers. .WEDNESDAY...East winds 10 to 15 knots, diminishing to 5 to 10 knots in the afternoon. Seas around 3 feet. Numerous showers in the afternoon. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet. Numerous showers. $$ AMZ742-030915- Coastal Waters of Northwestern Puerto Rico out 10 NM- 409 PM AST Fri Oct 2 2026 .TONIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 2 feet at 5 seconds and north 2 feet at 12 seconds. .SATURDAY...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 12 seconds and southeast 2 feet at 6 seconds. Scattered showers in the afternoon. .SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds and northeast 3 feet at 12 seconds. .SUNDAY...Northeast winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 11 seconds and southeast 2 feet at 6 seconds. Scattered showers in the afternoon. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 10 seconds and south 1 foot at 6 seconds. .MONDAY...East winds around 5 knots, becoming northeast in the afternoon. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 11 seconds and south 1 foot at 5 seconds. Numerous showers in the afternoon. .MONDAY NIGHT...East winds 5 to 10 knots, diminishing to around 5 knots after midnight. Seas 2 to 3 feet. .TUESDAY...East winds around 5 knots. Seas 2 to 3 feet. Numerous showers in the afternoon. .TUESDAY NIGHT...East winds around 5 knots. Seas 2 to 3 feet. Scattered showers. .WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Numerous showers in the afternoon. .WEDNESDAY NIGHT...East winds around 5 knots. Seas 2 to 3 feet. Scattered showers. $$ AMZ745-030915- Coastal Waters of Southwestern Puerto Rico out 10 NM- 409 PM AST Fri Oct 2 2026 .TONIGHT...East winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots late this evening and early morning, then diminishing to 5 to 10 knots late. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds and north 1 foot at 8 seconds. Isolated showers late. .SATURDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds and north 1 foot at 9 seconds. .SATURDAY 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. Wave Detail: Southeast 2 feet at 6 seconds and north 1 foot at 6 seconds. .SUNDAY...East winds around 5 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds and north 1 foot at 9 seconds. Numerous showers in the afternoon. .SUNDAY NIGHT...East winds around 5 knots, increasing to 5 to 10 knots after midnight. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds and north 1 foot at 8 seconds. .MONDAY...East winds around 5 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 6 seconds and north 1 foot at 6 seconds. Scattered showers in the afternoon. .MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Scattered showers. .TUESDAY...East winds 5 to 10 knots. Seas around 2 feet. Scattered showers in the afternoon. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. .WEDNESDAY...Southeast winds around 5 knots. Seas around 2 feet. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Scattered showers. $$