FZCA52 TJSJ 192024 CWFSJU Coastal Waters Forecast National Weather Service San Juan PR 424 PM AST Tue May 19 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. AMZ700-201000- 424 PM AST Tue May 19 2026 .Synopsis for Puerto Rico and the U.S. Virgin Islands Waters... A strong surface high pressure over the western Atlantic will maintain moderate to fresh trades through midweek. Winds will turn more east to southeast thereafter as the surface high moves into the central Atlantic. These breezy conditions will maintain choppy seas, particularly across the offshore and exposed Atlantic and Caribbean waters. A Small Craft Advisory remains in effect for the offshore Atlantic waters through at least Wednesday afternoon. Afternoon and early evening isolated thunderstorms can be expected each day across the western waters of Puerto Rico. $$ AMZ711-201000- Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N- 424 PM AST Tue May 19 2026 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH WEDNESDAY AFTERNOON... .TONIGHT...East winds 15 to 20 knots with gusts up to 30 knots. Seas 6 to 7 feet, occasionally to 9 feet. Wave Detail: East 7 feet at 8 seconds and north 1 foot at 7 seconds. Scattered showers, mainly this evening. .WEDNESDAY...East winds 15 to 20 knots with gusts up to 30 knots. Seas 6 to 7 feet, occasionally to 9 feet. Wave Detail: East 7 feet at 8 seconds. .WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to 30 knots. Seas around 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 8 seconds. Scattered showers. .THURSDAY...East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 8 seconds. .THURSDAY NIGHT...East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 8 seconds. Scattered showers in the evening. .FRIDAY...East winds 15 to 20 knots with gusts up to 30 knots. Seas around 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 8 seconds. .FRIDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 6 feet, occasionally to 8 feet. .SATURDAY...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Scattered showers in the morning. .SATURDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Scattered showers. .SUNDAY...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. .SUNDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. $$ AMZ712-201000- Coastal Waters of Northern Puerto Rico out 10 NM- 424 PM AST Tue May 19 2026 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...East winds 15 to 20 knots with gusts up to 30 knots, diminishing to 10 to 15 knots with gusts up to 25 knots late this evening and overnight. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 8 seconds and north 1 foot at 7 seconds. Scattered showers, mainly this evening. .WEDNESDAY...East winds 15 to 20 knots with gusts up to 30 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 8 seconds. Scattered showers. .WEDNESDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Gusts up to 30 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 8 seconds. Scattered showers. .THURSDAY...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 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 8 seconds. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds 15 to 20 knots with gusts up to 30 knots, diminishing to 10 to 15 knots with gusts up to 20 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 8 seconds. Scattered showers in the evening. .FRIDAY...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 4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet at 8 seconds. Scattered showers. .FRIDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet. .SATURDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. .SATURDAY 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. .SUNDAY...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .SUNDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 4 to 6 feet, occasionally to 8 feet. $$ AMZ716-201000- Coastal Waters from Cabo San Juan to the waters between Anegada Island and Virgin Gorda and North 10 NM- 424 PM AST Tue May 19 2026 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 7 seconds and north 1 foot at 8 seconds. Scattered showers early this evening, then isolated showers late this evening and overnight. .WEDNESDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 8 seconds and north 1 foot at 7 seconds. Scattered showers. .WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 4 feet at 8 seconds. Scattered showers after midnight. .THURSDAY...East winds around 15 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 8 seconds. Scattered showers. .THURSDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 4 seconds and east 4 feet at 8 seconds. Scattered showers. .FRIDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at 5 seconds. Scattered showers in the morning. .FRIDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. .SATURDAY...East winds 15 to 20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers in the afternoon. .SATURDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .SUNDAY...East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Scattered showers in the morning. .SUNDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Scattered showers. $$ AMZ723-201000- Anegada Passage east of Virgin Gorda and Saint Croix south to 17N- 424 PM AST Tue May 19 2026 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...East winds around 20 knots with gusts up to 25 knots. Seas around 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 8 seconds. Isolated showers. .WEDNESDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas around 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 7 seconds. Scattered showers in the afternoon. .WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas around 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. Scattered showers. .THURSDAY...East winds around 15 knots with gusts up to 25 knots. Seas around 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. .THURSDAY 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 7 seconds. Scattered showers after midnight. .FRIDAY...East winds around 15 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at 6 seconds. .FRIDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. .SATURDAY...East winds 15 to 20 knots. Seas around 5 feet, occasionally to 6 feet. Scattered showers in the afternoon. .SATURDAY NIGHT...East winds 15 to 20 knots. Seas around 5 feet, occasionally to 6 feet. Scattered showers. .SUNDAY...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. .SUNDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Scattered showers. $$ AMZ726-201000- Coastal waters east of Puerto Rico, around Vieques, and around and just north of Culebra and Saint John- 424 PM AST Tue May 19 2026 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 3 feet at 7 seconds. Scattered showers, mainly this evening. .WEDNESDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 3 feet at 6 seconds. Scattered showers. .WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. Scattered showers. .THURSDAY...East winds around 15 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. Scattered showers. .THURSDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at 7 seconds. Scattered showers. .FRIDAY...East winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 2 feet at 6 seconds. Scattered showers in the morning. .FRIDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers. .SATURDAY...East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally to 6 feet. Scattered showers. .SATURDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .SUNDAY...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .SUNDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. $$ AMZ733-201000- Caribbean waters of Puerto Rico from 10 NM to 17N, including the coastal waters of Saint Croix- 424 PM AST Tue May 19 2026 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 8 seconds and southeast 4 feet at 7 seconds. Isolated showers this evening, then scattered showers after midnight. .WEDNESDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 8 seconds and southeast 5 feet at 7 seconds. .WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 4 feet at 7 seconds and northeast 4 feet at 8 seconds. Scattered showers. .THURSDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas around 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 7 seconds and east 4 feet at 8 seconds. Scattered showers in the morning..THURSDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas around 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 7 seconds and east 3 feet at 8 seconds. .FRIDAY...East winds around 15 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: East 3 feet at 7 seconds. Scattered showers in the morning. .FRIDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .SATURDAY...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers in the morning. .SATURDAY NIGHT...East winds 15 to 20 knots. Seas around 5 feet, occasionally to 6 feet. Scattered showers. .SUNDAY...East winds 15 to 20 knots. Seas around 5 feet, occasionally to 6 feet. .SUNDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 6 feet, occasionally to 8 feet. Scattered showers. $$ AMZ735-201000- Coastal Waters of Southern Puerto Rico out 10 NM- 424 PM AST Tue May 19 2026 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...East winds 15 to 20 knots with gusts up to 25 knots, diminishing to 10 to 15 knots with gusts up to 25 knots late. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 7 seconds. Scattered showers. .WEDNESDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 7 seconds. Scattered showers in the morning. .WEDNESDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 7 seconds. Scattered showers. .THURSDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 7 seconds. Scattered showers in the morning. .THURSDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 7 seconds. .FRIDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. Scattered showers in the morning. .FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 3 to 4 feet, occasionally to 5 feet. .SATURDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally to 5 feet. Scattered showers in the morning. .SATURDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet. .SUNDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Seas 3 to 5 feet, occasionally to 6 feet. Scattered showers in the afternoon. .SUNDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Scattered showers. $$ AMZ741-201000- Mona Passage Southward to 17N- 424 PM AST Tue May 19 2026 ...SMALL CRAFT SHOULD EXERCISE CAUTION... .TONIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at 7 seconds and north 1 foot at 8 seconds. Isolated showers early this evening. Scattered showers late this evening, then isolated showers after midnight. .WEDNESDAY...East winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at 7 seconds. Scattered showers in the morning. .WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at 7 seconds and north 1 foot at 7 seconds. Scattered showers after midnight. .THURSDAY...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 7 seconds. Scattered showers in the afternoon. .THURSDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 4 feet at 7 seconds and north 1 foot at 6 seconds. .FRIDAY...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 7 seconds. Scattered showers in the afternoon. .FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers. .SATURDAY...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. Scattered showers in the afternoon. .SATURDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. .SUNDAY...East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally to 6 feet. .SUNDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Scattered showers. $$ AMZ742-201000- Coastal Waters of Northwestern Puerto Rico out 10 NM- 424 PM AST Tue May 19 2026 .TONIGHT...East winds 5 to 10 knots with gusts up to 20 knots, increasing to 10 to 15 knots with gusts up to 20 knots late this evening, then diminishing to 5 to 10 knots with gusts up to 20 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: South 1 foot at 6 seconds and north 1 foot at 8 seconds. Scattered showers this evening. .WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: South 1 foot at 7 seconds and north 1 foot at 7 seconds. Numerous showers in the afternoon. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: South 1 foot at 7 seconds. Scattered showers in the evening. .THURSDAY...East winds around 5 knots, becoming northeast 10 to 15 knots with gusts up to 20 knots in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: South 1 foot at 7 seconds. Numerous showers in the afternoon. .THURSDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: South 1 foot at 7 seconds. Scattered showers in the evening. .FRIDAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 1 foot at 7 seconds. Numerous showers in the afternoon. .FRIDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered showers. .SATURDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Numerous showers in the afternoon. .SATURDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers. .SUNDAY...East winds 5 to 10 knots. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers in the afternoon. .SUNDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to 15 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet. Scattered showers. $$ AMZ745-201000- Coastal Waters of Southwestern Puerto Rico out 10 NM- 424 PM AST Tue May 19 2026 .TONIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots late. Gusts up to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 6 seconds and north 1 foot at 8 seconds. Isolated showers this evening. .WEDNESDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast 3 feet at 7 seconds and north 1 foot at 6 seconds. .WEDNESDAY NIGHT...East winds 15 to 20 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 7 seconds. .THURSDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 7 seconds. .THURSDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds. .FRIDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 7 seconds. Scattered showers in the afternoon. .FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas 2 to 3 feet. Scattered showers. .SATURDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Scattered showers in the afternoon. .SATURDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet. .SUNDAY...East winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Scattered showers in the afternoon. .SUNDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet. Scattered showers. $$