FZCA52 TJSJ 160752 CWFSJU Coastal Waters Forecast National Weather Service San Juan PR 352 AM AST Fri Oct 16 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. AMZ700-162015- 352 AM AST Fri Oct 16 2026 .Synopsis for Puerto Rico and the U.S. Virgin Islands Waters... Predominantly tranquil conditions will persist across the local waters for the rest of the week. A surface high pressure moving east across the northwestern Atlantic will maintain gentle to moderate E winds, shifting to ESE by Saturday as the high pressure moves into the central Atlantic. A small long-period NNE swell approaching the Atlantic waters will linger into the weekend. By early next week an additional NNW swell will reach the Atlantic waters as a distant surface low pressure moves east into the western Atlantic. Showers and isolated thunderstorms may produce locally hazardous conditions each afternoon, particularly across the western and coastal waters of Puerto Rico. $$ AMZ711-162015- Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- 352 AM AST Fri Oct 16 2026 .TODAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds and northeast 2 feet at 8 seconds. Scattered showers early this morning, then isolated showers late this morning and afternoon. .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds and east 3 feet at 8 seconds. .SATURDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 7 seconds and northeast 3 feet at 12 seconds. .SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds and east 3 feet at 8 seconds. Scattered showers after midnight. .SUNDAY...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 9 seconds and north 3 feet at 12 seconds. Scattered showers in the morning. .SUNDAY NIGHT...East winds around 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 9 seconds and north 3 feet at 12 seconds. .MONDAY...East winds around 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers in the morning. .MONDAY NIGHT...East winds around 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .TUESDAY...East winds 5 to 10 knots. Seas 5 to 7 feet, occasionally to 9 feet. Scattered showers in the morning. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 5 to 6 feet, occasionally to 8 feet. Scattered showers. $$ AMZ712-162015- Coastal Waters of Northern Puerto Rico out 10 NM- 352 AM AST Fri Oct 16 2026 .TODAY...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 5 seconds and northeast 2 feet at 8 seconds. Scattered showers early this morning, then isolated showers late this morning and afternoon. .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 5 seconds and northeast 2 feet at 8 seconds. Scattered showers after midnight. .SATURDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 7 seconds and northeast 2 feet at 13 seconds. Scattered showers in the afternoon. .SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots, becoming southeast 5 to 10 knots after midnight. Seas around 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 7 seconds and north 3 feet at 12 seconds. Scattered showers in the evening, then numerous showers after midnight. .SUNDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 10 seconds and northeast 2 feet at 5 seconds. Scattered showers in the afternoon. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 8 seconds and north 2 feet at 12 seconds. Scattered showers. .MONDAY...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. .MONDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. .TUESDAY...East winds 5 to 10 knots. Seas 4 to 6 feet, occasionally to 8 feet. Scattered showers. .TUESDAY NIGHT...East winds 5 to 10 knots, becoming southeast after midnight. Seas around 6 feet, occasionally to 8 feet. Scattered showers. $$ AMZ716-162015- Coastal Waters from Cabo San Juan to the waters between Anegada Island and Virgin Gorda and North 10 NM- 352 AM AST Fri Oct 16 2026 .TODAY...East winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 4 seconds and northeast 2 feet at 8 seconds. Scattered showers early this morning, then isolated showers late this morning and afternoon. .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 4 seconds and northeast 2 feet at 8 seconds. Scattered showers in the evening. .SATURDAY...East winds around 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 4 seconds and north 2 feet at 13 seconds. Scattered showers in the morning. .SATURDAY NIGHT...East winds around 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 12 seconds and east 2 feet at 4 seconds. Scattered showers. .SUNDAY...East winds around 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 9 seconds and northeast 3 feet at 11 seconds. Scattered showers. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 9 seconds and northeast 3 feet at 12 seconds. Scattered showers. .MONDAY...East winds around 10 knots. Seas 2 to 3 feet. Scattered showers. .MONDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet. Scattered showers. .TUESDAY...East winds around 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 4 to 6 feet, occasionally to 8 feet. Scattered showers. $$ AMZ723-162015- Anegada Passage east of Virgin Gorda and Saint Croix south to 17N- 352 AM AST Fri Oct 16 2026 .TODAY...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 8 seconds. Scattered showers early this morning, then isolated showers late this morning and afternoon. .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. Wave Detail: East 3 feet at 4 seconds and northeast 2 feet at 14 seconds. Scattered showers. .SATURDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 4 seconds and northeast 3 feet at 12 seconds. .SATURDAY NIGHT...East winds around 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 12 seconds and southeast 2 feet at 4 seconds. Scattered showers. .SUNDAY...East winds around 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 5 seconds and northeast 3 feet at 11 seconds. Scattered showers. .SUNDAY NIGHT...East winds around 10 knots. Seas around 3 feet. Wave Detail: Southeast 2 feet at 5 seconds and east 2 feet at 8 seconds. Scattered showers. .MONDAY...East winds around 10 knots. Seas around 3 feet. Scattered showers. .MONDAY NIGHT...East winds around 10 knots. Seas around 3 feet. Scattered showers. .TUESDAY...East winds around 10 knots. Seas around 3 feet. Scattered showers. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. $$ AMZ726-162015- Coastal waters east of Puerto Rico, around Vieques, and around and just north of Culebra and Saint John- 352 AM AST Fri Oct 16 2026 .TODAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds and northeast 1 foot at 8 seconds. Scattered showers early this morning, then isolated showers late this morning and afternoon. .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds and northeast 1 foot at 8 seconds. Scattered showers in the evening. .SATURDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds and northeast 1 foot at 8 seconds. Scattered showers. .SATURDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds and east 1 foot at 8 seconds. Scattered showers. .SUNDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds and east 2 feet at 9 seconds. Scattered showers. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds and east 2 feet at 9 seconds. Scattered showers. .MONDAY...East winds around 10 knots. Seas 2 to 3 feet. Scattered showers. .MONDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet. Scattered showers. .TUESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers. $$ AMZ733-162015- Caribbean waters of Puerto Rico from 10 NM to 17N, including the coastal waters of Saint Croix- 352 AM AST Fri Oct 16 2026 .TODAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. Wave Detail: East 3 feet at 5 seconds and east 1 foot at 8 seconds. Scattered showers, mainly this morning. .TONIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas around 3 feet. Wave Detail: East 3 feet at 5 seconds and east 1 foot at 8 seconds. Scattered showers after midnight. .SATURDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 3 feet. Wave Detail: East 3 feet at 5 seconds and east 1 foot at 8 seconds. Scattered showers in the morning. .SATURDAY NIGHT...East winds around 10 knots. Seas around 3 feet. Wave Detail: East 2 feet at 5 seconds and east 1 foot at 8 seconds. Scattered showers. .SUNDAY...East winds 5 to 10 knots. Seas around 3 feet. Wave Detail: East 2 feet at 5 seconds and east 1 foot at 8 seconds. Scattered showers in the morning. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds and east 1 foot at 8 seconds. Scattered showers. .MONDAY...East winds around 10 knots. Seas 2 to 3 feet. Scattered showers. .MONDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet. Scattered showers. .TUESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. $$ AMZ735-162015- Coastal Waters of Southern Puerto Rico out 10 NM- 352 AM AST Fri Oct 16 2026 .TODAY...East winds 5 to 10 knots, increasing to 10 to 15 knots late this morning and afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds and east 1 foot at 8 seconds. Isolated showers. .TONIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds. .SATURDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds. .SATURDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds. .SUNDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds. Scattered showers in the morning. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds. .MONDAY...East winds 5 to 10 knots. Seas around 2 feet. .MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. .TUESDAY...East winds 5 to 10 knots. Seas around 2 feet. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. $$ AMZ741-162015- Mona Passage Southward to 17N- 352 AM AST Fri Oct 16 2026 .TODAY...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 8 seconds. Isolated showers. Isolated thunderstorms late. .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 1 foot at 8 seconds. Scattered showers in the evening. .SATURDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds and north 2 feet at 14 seconds. .SATURDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 7 seconds and north 3 feet at 12 seconds. Scattered showers after midnight. .SUNDAY...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 12 seconds and east 2 feet at 5 seconds. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 2 feet at 7 seconds and north 2 feet at 10 seconds. .MONDAY...East winds 5 to 10 knots. Seas around 3 feet. .MONDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. .TUESDAY...East winds 5 to 10 knots. Seas 3 to 5 feet, occasionally to 6 feet. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 4 to 6 feet, occasionally to 8 feet. Winds and seas higher in and near thunderstorms. $$ AMZ742-162015- Coastal Waters of Northwestern Puerto Rico out 10 NM- 352 AM AST Fri Oct 16 2026 .TODAY...East winds 5 to 10 knots, diminishing to around 5 knots late. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 5 seconds and northeast 2 feet at 8 seconds. Scattered showers early this afternoon. Isolated thunderstorms this afternoon. Showers late. .TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at 7 seconds and northeast 1 foot at 14 seconds. Scattered showers in the evening. .SATURDAY...East winds 5 to 10 knots, becoming northeast in the afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds and northeast 2 feet at 13 seconds. Scattered showers in the afternoon. .SATURDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 12 seconds and southeast 2 feet at 5 seconds. Scattered showers in the evening. .SUNDAY...Northeast winds around 5 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 11 seconds and southeast 1 foot at 5 seconds. Numerous showers in the afternoon. .SUNDAY NIGHT...East winds around 5 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 9 seconds and south 1 foot at 6 seconds. .MONDAY...Northeast winds around 5 knots. Seas 2 to 3 feet. Numerous showers in the afternoon. .MONDAY NIGHT...Eastwinds around 5 knots. Seas 2 to 3 feet. Scattered showers. .TUESDAY...East winds 5 to 10 knots. Seas 3 to 5 feet, occasionally to 6 feet. Numerous showers in the afternoon. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 5 to 7 feet, occasionally to 9 feet. Scattered showers. Winds and seas higher in and near thunderstorms. $$ AMZ745-162015- Coastal Waters of Southwestern Puerto Rico out 10 NM- 352 AM AST Fri Oct 16 2026 .TODAY...East winds around 5 knots, becoming southeast early this afternoon, then becoming east late. Seas around 2 feet. Wave Detail: Southeast 1 foot at 5 seconds and north 1 foot at 6 seconds. Scattered showers early this afternoon. Showers with isolated thunderstorms late. .TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds and north 1 foot at 8 seconds. Scattered showers in the evening. .SATURDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds and north 1 foot at 8 seconds. .SATURDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds and north 1 foot at 8 seconds. .SUNDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 1 foot at 5 seconds and north 1 foot at 8 seconds. .SUNDAY NIGHT...East winds around 5 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 6 seconds and north 1 foot at 8 seconds. .MONDAY...Southeast winds around 5 knots. Seas around 2 feet. Scattered showers in the afternoon. .MONDAY NIGHT...East winds around 5 knots. Seas around 2 feet. .TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers in the afternoon. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 5 feet, occasionally to 6 feet. Winds and seas higher in and near thunderstorms. $$