FZCA52 TJSJ 162026 CWFSJU Coastal Waters Forecast National Weather Service San Juan PR 426 PM 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. AMZ700-170930- 426 PM AST Fri Oct 16 2026 .Synopsis for Puerto Rico and the U.S. Virgin Islands Waters... Gentle to moderate easterly winds will gradually shift to the east- southeast this weekend. A building upper-level ridge will limit widespread shower and thunderstorm activity, although occasional passing showers will affect the regional waters. A small northeasterly swell will continue to affect mainly the Atlantic waters and exposed passages. A more energetic northerly swell is expected to arrive late Monday night into Tuesday and persist through midweek, resulting in building seas. $$ AMZ711-170930- Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- 426 PM AST Fri Oct 16 2026 .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds and east 3 feet at 8 seconds. Isolated showers. .SATURDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 7 seconds and northeast 3 feet at 12 seconds. .SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas around 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 5 seconds and east 3 feet at 8 seconds. .SUNDAY...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 9 seconds and north 3 feet at 12 seconds. Scattered showers in the morning. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 12 seconds and east 2 feet at 9 seconds. .MONDAY...East winds around 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 11 seconds and southeast 2 feet at 4 seconds. Scattered showers in the morning. .MONDAY NIGHT...East winds around 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. .TUESDAY...East winds 5 to 10 knots. Seas 4 to 6 feet, occasionally to 8 feet. Scattered showers in the morning. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 5 to 6 feet, occasionally to 8 feet. Scattered showers. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers in the morning. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 4 feet, occasionally to 5 feet. Scattered showers. $$ AMZ712-170930- Coastal Waters of Northern Puerto Rico out 10 NM- 426 PM AST Fri Oct 16 2026 .TONIGHT...East winds 10 to 15 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. Isolated showers early this evening, then scattered showers late this evening and overnight. .SATURDAY...East winds 10 to 15 knots. Gusts up to 25 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 5 seconds and northeast 2 feet at 13 seconds. .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 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 8 seconds and north 3 feet at 10 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: East 2 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 with gusts up to 20 knots in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 11 seconds and east 2 feet at 9 seconds. 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, increasing to 10 to 15 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Scattered showers. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 5 to 6 feet, occasionally to 8 feet. Scattered showers. .WEDNESDAY...Southeast winds 5 to 10 knots, becoming northeast in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Numerous showers in the afternoon. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 4 feet, occasionally to 5 feet. Scattered showers. $$ AMZ716-170930- Coastal Waters from Cabo San Juan to the waters between Anegada Island and Virgin Gorda and North 10 NM- 426 PM AST Fri Oct 16 2026 .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 4 seconds and northeast 2 feet at 8 seconds. Isolated showers early this evening, then scattered showers late this evening and early morning. Isolated showers late. .SATURDAY...East winds 10 to 15 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at 4 seconds and north 2 feet at 13 seconds. .SATURDAY NIGHT...East winds around 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 12 seconds and east 2 feet at 4 seconds. Scattered showers after midnight. .SUNDAY...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet at 10 seconds. Scattered showers. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 9 seconds and northeast 3 feet at 12 seconds. Scattered showers. .MONDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: North 3 feet at 12 seconds and east 2 feet at 4 seconds. Scattered showers. .MONDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet. Scattered showers. .TUESDAY...East winds around 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 5 feet, occasionally to 6 feet. Scattered showers. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas 3 to 5 feet, occasionally to 6 feet. Scattered showers. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. $$ AMZ723-170930- Anegada Passage east of Virgin Gorda and Saint Croix south to 17N- 426 PM AST Fri Oct 16 2026 .TONIGHT...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 northeast 2 feet at 14 seconds. Isolated showers early this evening. Scattered showers late this evening and early morning, then isolated showers late. .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 east 2 feet at 4 seconds. Scattered showers after midnight. .SUNDAY...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 4 seconds and northeast 3 feet at 12 seconds. Scattered showers. .SUNDAY NIGHT...East winds 5 to 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. Wave Detail: Southeast 2 feet at 5 seconds and north 2 feet at 12 seconds. Scattered showers. .MONDAY NIGHT...East winds around 10 knots. Seas around 3 feet. Scattered showers. .TUESDAY...East winds 5 to 10 knots. Seas around 3 feet. Scattered showers. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet. Scattered showers. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 3 feet. Scattered showers in the morning. .WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas around 3 feet. Scattered showers. $$ AMZ726-170930- Coastal waters east of Puerto Rico, around Vieques, and around and just north of Culebra and Saint John- 426 PM AST Fri Oct 16 2026 .TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds and northeast 1 foot at 8 seconds. Isolated showers. .SATURDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds and northeast 1 foot at 8 seconds. .SATURDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds and east 1 foot at 8 seconds. Scattered showers after midnight. .SUNDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds and east 1 foot at 8 seconds. Scattered showers. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds and east 2 feet at 9 seconds. Scattered showers. .MONDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds and east 1 foot at 8 seconds. Scattered showers. .MONDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. .TUESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. .TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. $$ AMZ733-170930- Caribbean waters of Puerto Rico from 10 NM to 17N, including the coastal waters of Saint Croix- 426 PM AST Fri Oct 16 2026 .TONIGHT...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. Isolated showers. .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. .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 after midnight. .SUNDAY...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 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. Wave Detail: East 2 feet at 5 seconds and east 1 foot at 8 seconds. 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 3 feet. Scattered showers. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers in the morning. .WEDNESDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet. Scattered showers. $$ AMZ735-170930- Coastal Waters of Southern Puerto Rico out 10 NM- 426 PM AST Fri Oct 16 2026 .TONIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots late. Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds. Isolated showers. .SATURDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds. .SATURDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds. .SUNDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds. Scattered showers in the morning. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds. .MONDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds and east 1 foot at 8 seconds. .MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. .TUESDAY...East winds 5 to 10 knots. Seas around 2 feet. .TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Scattered showers in the morning. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Scattered showers. $$ AMZ741-170930- Mona Passage Southward to 17N- 426 PM AST Fri Oct 16 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 1 foot at 8 seconds. Isolated showers. .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 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 6 seconds and north 3 feet at 12 seconds. .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 around 3 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. Wave Detail: East 2 feet at 5 seconds and northeast 2 feet at 8 seconds. .MONDAY NIGHT...East winds 5 to 10 knots. Seas around 3 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 3 to 5 feet, occasionally to 6 feet. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas 3 to 5 feet, occasionally to 6 feet. .WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. $$ AMZ742-170930- Coastal Waters of Northwestern Puerto Rico out 10 NM- 426 PM AST Fri Oct 16 2026 .TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 6 seconds and north 1 foot at 8 seconds. Scattered showers early this evening. .SATURDAY...East winds 5 to 10 knots, becoming north in the afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds and northeast 2 feet at 13 seconds. Scattered showers in the afternoon. .SATURDAY NIGHT...East winds around 5 knots, becoming southeast after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 12 seconds and southeast 2 feet at 5 seconds. .SUNDAY...East winds around 5 knots, becoming northeast in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 11 seconds and southeast 1 foot at 5 seconds. Numerous showers in the afternoon. .SUNDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: North 3 feet at 9 seconds and south 1 foot at 6 seconds. .MONDAY...East winds around 5 knots, becoming northeast in the afternoon. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 12 seconds and south 1 foot at 6 seconds. Numerous showers in the afternoon. .MONDAY NIGHT...East winds around 5 knots. Seas 2 to 3 feet. Scattered showers. .TUESDAY...Eastwinds around 5 knots, becoming south around 5 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Numerous showers in the afternoon. .TUESDAY NIGHT...East winds around 5 knots. Seas 4 to 6 feet, occasionally to 8 feet. Scattered showers. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas 4 to 6 feet, occasionally to 8 feet. Numerous showers in the afternoon. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 4 to 5 feet, occasionally to 6 feet. $$ AMZ745-170930- Coastal Waters of Southwestern Puerto Rico out 10 NM- 426 PM AST Fri Oct 16 2026 .TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 1 foot at 5 seconds and north 1 foot at 8 seconds. Scattered showers early this 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 7 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 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 6 seconds and north 1 foot at 8 seconds. .MONDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 2 feet at 6 seconds and north 1 foot at 8 seconds. 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 4 feet, occasionally to 5 feet. .WEDNESDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers in the afternoon. .WEDNESDAY NIGHT...East winds around 10 knots. Seas 3 to 4 feet, occasionally to 5 feet. $$