National Weather Service Marine Forecast FZCA52 TJSJ
FZCA52 TJSJ 110757
CWFSJU
Coastal Waters Forecast
National Weather Service San Juan PR
357 AM AST Sat Jul 11 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.
AMZ700-112015
357 AM AST Sat Jul 11 2026
Synopsis for Puerto Rico and the U.S. Virgin Islands Waters
A broad surface high pressure centered over the central Atlantic, combined with a low pressure over northern South America, will maintain a tight pressure gradient across the northeastern Caribbean through at least late today. This pattern will support moderate to fresh easterly winds across the regional waters, with occasional strong winds, particularly over the offshore Caribbean waters. These conditions will continue to support choppy to hazardous seas, especially across the offshore Caribbean waters and the Mona Passage. Moderate to high concentrations of Saharan dust will also persist through the weekend, resulting in hazy skies and reduced visibility, but not in less that 8 miles.
AMZ711-112015
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N
357 AM AST Sat Jul 11 2026
SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
East winds 15 to 20 knots with gusts up to 25 knots. Seas
5 to 7 feet, occasionally to 8 feet. Wave Detail: East 6 feet at 7
seconds.
TONIGHT
East winds 15 to 20 knots with gusts up to 25 knots. Seas
around 6 feet, occasionally to 7 feet. Wave Detail: East 5 feet at 8
seconds and north 1 foot at 9 seconds.
SUNDAY
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 9 seconds.
SUNDAY 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 8 seconds and north 1 foot at 8 seconds.
MONDAY
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
8 seconds and north 1 foot at 9 seconds.
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: East 5 feet
at 8 seconds and north 1 foot at 7 seconds.
TUESDAY
East winds 10 to 15 knots. Seas around 4 feet,
occasionally to 5 feet.
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.
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.
AMZ712-112015
Coastal Waters of Northern Puerto Rico out 10 NM
357 AM AST Sat Jul 11 2026
SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
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
7 seconds.
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
6 seconds.
SUNDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas
4 to 5 feet, occasionally to 6 feet. Wave Detail: Northeast 5 feet
at 6 seconds.
SUNDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Gusts up to 30 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: East 5 feet at 6 seconds and
north 1 foot at 10 seconds.
MONDAY
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 7 seconds and northeast 1 foot at 11 seconds.
MONDAY 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 3 to 5 feet, occasionally to 6 feet. Wave Detail:
Northeast 5 feet at 7 seconds and northeast 1 foot at 11 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.
TUESDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 3 to 5 feet, occasionally to 6 feet.
WEDNESDAY
East winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet.
WEDNESDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet.
AMZ716-112015
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM
357 AM AST Sat Jul 11 2026
SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
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.
TONIGHT
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
5 seconds.
SUNDAY
East winds 15 to 20 knots with gusts up to 25 knots. Seas
3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at
5 seconds and north 1 foot at 9 seconds.
SUNDAY NIGHT
East winds 15 to 20 knots with gusts up to 25 knots.
Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet
at 5 seconds and north 1 foot at 9 seconds.
MONDAY
East winds around 15 knots with gusts up to 25 knots. Seas
3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at
5 seconds and north 1 foot at 8 seconds. Scattered showers in the
morning.
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 5 seconds and north 1 foot at 9 seconds.
TUESDAY
East winds around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
TUESDAY NIGHT
East winds around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
WEDNESDAY
East winds 10 to 15 knots. Seas 2 to 3 feet.
WEDNESDAY NIGHT
East winds around 15 knots. Seas 2 to 3 feet.
AMZ723-112015
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N
357 AM AST Sat Jul 11 2026
SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
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
7 seconds.
TONIGHT
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.
SUNDAY
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.
SUNDAY 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 and northeast 1 foot at 11 seconds. Scattered showers.
MONDAY
East winds 15 to 20 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 in
the morning.
MONDAY NIGHT
East winds 15 to 20 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 10 seconds.
TUESDAY
East winds around 15 knots. Seas around 4 feet,
occasionally to 5 feet.
TUESDAY NIGHT
East winds around 15 knots. Seas around 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 around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
AMZ726-112015
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John
357 AM AST Sat Jul 11 2026
SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
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.
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.
SUNDAY
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.
SUNDAY NIGHT
East winds 15 to 20 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
East winds 15 to 20 knots with gusts up to 25 knots. Seas
3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at
6 seconds. Scattered showers in the morning.
MONDAY NIGHT
East winds 15 to 20 knots with gusts up to 25 knots.
Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet
at 6 seconds.
TUESDAY
East winds around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
TUESDAY NIGHT
East winds around 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 around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
AMZ733-112015
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix
357 AM AST Sat Jul 11 2026
SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
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
7 seconds.
TONIGHT
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
7 seconds.
SUNDAY
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
7 seconds.
SUNDAY 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.
MONDAY
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.
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: East 5 feet
at 6 seconds.
TUESDAY
East winds 15 to 20 knots. Seas 4 to 5 feet, occasionally
to 6 feet.
TUESDAY NIGHT
East winds 15 to 20 knots. Seas 4 to 5 feet,
occasionally to 6 feet.
WEDNESDAY
East winds around 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet.
WEDNESDAY NIGHT
East winds around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
AMZ735-112015
Coastal Waters of Southern Puerto Rico out 10 NM
357 AM AST Sat Jul 11 2026
SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas
4 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at
7 seconds.
TONIGHT
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: East 5 feet at 7 seconds.
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. Wave
Detail: East 5 feet at 7 seconds.
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.
Wave Detail: East 5 feet at 7 seconds.
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
7 seconds. Scattered showers.
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: East 4 feet
at 6 seconds.
TUESDAY
East winds 15 to 20 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.
AMZ741-112015
Mona Passage Southward to 17N
357 AM AST Sat Jul 11 2026
SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING
TODAY
East winds 15 to 20 knots, diminishing to 10 to 15 knots
late. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: East
7 feet at 7 seconds. Isolated showers early this morning. Isolated
showers this afternoon.
TONIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas
4 to 6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at
7 seconds.
SUNDAY
East winds 15 to 20 knots, diminishing to 10 to 15 knots
in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave
Detail: East 6 feet at 7 seconds.
SUNDAY 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 and north 1 foot at 9 seconds. Scattered showers.
MONDAY
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: East 5 feet at 7 seconds and north 1 foot at 9 seconds.
Scattered showers.
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: East 5 feet
at 7 seconds. Scattered showers in the evening.
TUESDAY
East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally
to 6 feet.
TUESDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet.
WEDNESDAY
East winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet.
WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet.
AMZ742-112015
Coastal Waters of Northwestern Puerto Rico out 10 NM
357 AM AST Sat Jul 11 2026
TODAY
East winds 10 to 15 knots, becoming northeast 5 to 10 knots
late this morning, then increasing to 10 to 15 knots this afternoon.
Gusts up to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet. Wave
Detail: Northeast 4 feet at 7 seconds. Isolated showers this
afternoon.
TONIGHT
Northeast winds 15 to 20 knots, becoming east 10 to
15 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet.
Wave Detail: Northeast 4 feet at 6 seconds.
SUNDAY
Northeast winds 10 to 15 knots with gusts up to 25 knots.
Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 6 seconds.
Scattered showers in the afternoon.
SUNDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 2 to 4 feet, occasionally to 5 feet.
Wave Detail: Northeast 4 feet at 6 seconds and north 1 foot at
9 seconds.
MONDAY
East winds 5 to 10 knots, becoming northeast 10 to
15 knots with gusts up to 25 knots in the afternoon. Seas 2 to
3 feet. Wave Detail: Northeast 3 feet at 6 seconds. Numerous showers
in the afternoon.
MONDAY NIGHT
East winds 10 to 15 knots with gusts up to 25 knots.
Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast
3 feet at 6 seconds.
TUESDAY
Northeast winds 5 to 10 knots. 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, becoming northeast 10 to
15 knots in the afternoon. Seas 2 to 3 feet.
WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas 2 to 3 feet.
AMZ745-112015
Coastal Waters of Southwestern Puerto Rico out 10 NM
357 AM AST Sat Jul 11 2026
TODAY
East winds around 5 knots, becoming southeast early this
afternoon, then becoming east late. Seas 2 to 3 feet. Wave Detail:
South 3 feet at 7 seconds. Isolated showers early this afternoon.
Scattered showers late.
TONIGHT
Northeast winds 10 to 15 knots with gusts up to 20 knots,
becoming east 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 6 seconds.
SUNDAY
East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 7 seconds. Scattered showers in the afternoon.
SUNDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 7 seconds and north 1 foot 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: Southeast 2 feet at 6 seconds and north 1 foot at 8 seconds.
Scattered showers.
MONDAY 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 7 seconds.
TUESDAY
East winds 10 to 15 knots. Seas 2 to 3 feet.
TUESDAY NIGHT
East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 2 to 3 feet.
WEDNESDAY
East winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 2 to 3 feet.
WEDNESDAY NIGHT
East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 2 to 3 feet.
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