National Weather Service Marine Forecast FZCA52 TJSJ
FZCA52 TJSJ 100730
CWFSJU
Coastal Waters Forecast
National Weather Service San Juan PR
330 AM AST Sun May 10 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.
AMZ700-102015
330 AM AST Sun May 10 2026
Synopsis for Puerto Rico and the U.S. Virgin Islands Waters
A strengthening surface high pressure over the central Atlantic will promote moderate to locally fresh east-to-southeast winds across the regional waters through early this week. Choppy marine conditions are expected with sustained winds of 15 to 20 knots with occasional higher gusts. Seas will range between 3 and 5 feet, with occasional seas up to 6 feet. Small craft are urged to exercise caution across most local waters.
AMZ711-102015
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N
330 AM AST Sun May 10 2026
SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
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
7 seconds. Scattered showers this morning.
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 5 feet at
7 seconds.
MONDAY
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
7 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 7 seconds. Scattered showers.
TUESDAY
East winds 15 to 20 knots, diminishing to 10 to 15 knots
in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet. Wave
Detail: Northeast 5 feet at 7 seconds.
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.
Wave Detail: East 4 feet at 6 seconds and northeast 1 foot at
14 seconds.
WEDNESDAY
East winds 10 to 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Scattered showers in the morning.
WEDNESDAY NIGHT
East winds 15 to 20 knots, becoming southeast
10 to 15 knots after midnight. Seas 4 to 5 feet, occasionally to
6 feet.
THURSDAY
Southeast winds 10 to 15 knots, becoming east 15 to
20 knots in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet.
Scattered showers in the morning.
THURSDAY NIGHT
Southeast winds 10 to 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet.
AMZ712-102015
Coastal Waters of Northern Puerto Rico out 10 NM
330 AM AST Sun May 10 2026
SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
East winds 10 to 15 knots, increasing to 15 to 20 knots
this afternoon. Gusts up to 30 knots. Seas 4 to 5 feet, occasionally
to 6 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers,
mainly this morning.
TONIGHT
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: Northeast 5 feet at 7 seconds. Scattered
showers after midnight.
MONDAY
East winds 10 to 15 knots, increasing to 15 to 20 knots in
the afternoon. Gusts up to 30 knots. Seas 4 to 5 feet, occasionally
to 6 feet. Wave Detail: East 5 feet at 7 seconds. Scattered showers
in the morning.
MONDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet.
Wave Detail: Northeast 5 feet at 7 seconds. Scattered showers.
TUESDAY
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. Scattered showers in the morning.
TUESDAY NIGHT
East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Gusts up to 25 knots. Seas around 4 feet,
occasionally to 5 feet. Wave Detail: Northeast 4 feet at 7 seconds
and northeast 1 foot at 14 seconds.
WEDNESDAY
East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers in the afternoon.
WEDNESDAY NIGHT
East winds 10 to 15 knots, becoming southeast
5 to 10 knots after midnight. Seas 3 to 4 feet, occasionally to
5 feet.
THURSDAY
East winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet.
Scattered showers in the afternoon.
THURSDAY NIGHT
East winds 10 to 15 knots, becoming southeast 5 to
10 knots after midnight. Seas around 4 feet, occasionally to 5 feet.
AMZ716-102015
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM
330 AM AST Sun May 10 2026
SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas
3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at
6 seconds. Scattered showers.
TONIGHT
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.
MONDAY
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
6 seconds.
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. Scattered showers.
TUESDAY
East winds 10 to 15 knots with gusts up to 20 knots. Seas
3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at
6 seconds. Scattered showers in the morning.
TUESDAY NIGHT
East winds around 15 knots with gusts up to
25 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
Northeast 3 feet at 8 seconds and southeast 2 feet at 5 seconds.
WEDNESDAY
East winds around 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. Scattered showers.
THURSDAY
East winds around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers.
THURSDAY NIGHT
East winds around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers.
AMZ723-102015
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N
330 AM AST Sun May 10 2026
SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
East winds 15 to 20 knots. Gusts up to 30 knots. Seas 5 to
6 feet, occasionally to 8 feet. Wave Detail: East 6 feet at
7 seconds. Isolated showers early this morning, then scattered
showers late this morning.
TONIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas
4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at
7 seconds. Scattered showers in the evening.
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
7 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 7 seconds. Scattered showers after midnight.
TUESDAY
East winds around 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.
TUESDAY NIGHT
East winds around 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 14 seconds.
WEDNESDAY
East winds around 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet.
WEDNESDAY NIGHT
East winds around 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Scattered showers.
THURSDAY
East winds around 15 knots. Seas around 5 feet,
occasionally to 6 feet.
THURSDAY NIGHT
East winds 15 to 20 knots. Seas around 5 feet,
occasionally to 6 feet. Scattered showers.
AMZ726-102015
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John
330 AM AST Sun May 10 2026
SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas
4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at
6 seconds. Scattered showers.
TONIGHT
East winds 15 to 20 knots with gusts up to 25 knots. Seas
3 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at
6 seconds. Scattered showers.
MONDAY
East winds 15 to 20 knots with gusts up to 25 knots. Seas
3 to 5 feet, occasionally to 6 feet. Wave Detail: East 3 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. Scattered showers after midnight.
TUESDAY
East winds 10 to 15 knots with gusts up to 20 knots. Seas
3 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at
6 seconds. Scattered showers in the morning.
TUESDAY 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 3 feet at 7 seconds.
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. Scattered showers.
THURSDAY
East winds around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers.
THURSDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers.
AMZ733-102015
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix
330 AM AST Sun May 10 2026
SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
East winds 15 to 20 knots. Gusts up to 30 knots. Seas 5 to
6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at
6 seconds. Scattered showers this morning. Isolated showers early
this afternoon. Scattered showers late.
TONIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas
4 to 5 feet, occasionally to 6 feet. Wave Detail: East 5 feet at
7 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
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 4 feet
at 6 seconds. Scattered showers after midnight.
TUESDAY
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. Scattered showers in the morning.
TUESDAY 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 7 seconds.
WEDNESDAY
East winds around 15 knots. Seas around 4 feet,
occasionally to 5 feet.
WEDNESDAY NIGHT
East winds around 15 knots. Seas around 4 feet,
occasionally to 5 feet. Scattered showers.
THURSDAY
East winds around 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet.
THURSDAY NIGHT
East winds around 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Scattered showers.
AMZ735-102015
Coastal Waters of Southern Puerto Rico out 10 NM
330 AM AST Sun May 10 2026
SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas
3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 5 feet
at 6 seconds. Scattered showers, mainly this morning.
TONIGHT
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.
MONDAY
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: Southeast 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: Southeast
4 feet at 6 seconds. Scattered showers after midnight.
TUESDAY
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.
TUESDAY 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.
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. Scattered showers.
THURSDAY
East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
THURSDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
AMZ741-102015
Mona Passage Southward to 17N
330 AM AST Sun May 10 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. Scattered showers late this morning. Isolated showers
early this afternoon, then scattered showers late.
TONIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas
4 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast 5 feet
at 7 seconds and northeast 2 feet 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: Southeast 5 feet
at 7 seconds and northeast 3 feet at 8 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: Southeast
4 feet at 7 seconds and northeast 3 feet at 8 seconds.
TUESDAY
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 northeast 3 feet at 8 seconds. Scattered showers in
the morning.
TUESDAY 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 7 seconds.
WEDNESDAY
Southeast winds 10 to 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet.
WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas around 4 feet,
occasionally to 5 feet.
THURSDAY
Southeast winds 10 to 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet.
THURSDAY NIGHT
East winds 10 to 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet.
AMZ742-102015
Coastal Waters of Northwestern Puerto Rico out 10 NM
330 AM AST Sun May 10 2026
TODAY
East winds 10 to 15 knots, diminishing to 5 to 10 knots
late this morning and afternoon. Seas 2 to 4 feet, occasionally to
5 feet. Wave Detail: Northeast 3 feet at 7 seconds and southeast
1 foot at 7 seconds. Scattered showers this afternoon.
TONIGHT
East winds 5 to 10 knots with gusts up to 20 knots. Seas
2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet
at 8 seconds and south 1 foot at 5 seconds.
MONDAY
East winds 5 to 10 knots with gusts up to 20 knots. Seas
2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast 3 feet
at 8 seconds and south 1 foot at 7 seconds. Scattered showers in the
afternoon.
MONDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: Northeast 3 feet at 7 seconds
and south 1 foot at 7 seconds.
TUESDAY
East winds around 5 knots, increasing to 5 to 10 knots in
the afternoon. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at
7 seconds and south 1 foot at 7 seconds. Scattered showers in the
afternoon.
TUESDAY NIGHT
East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 2 to 3 feet. Wave Detail: South 2 feet
at 5 seconds and northeast 2 feet at 8 seconds.
WEDNESDAY
East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered
showers in the afternoon.
WEDNESDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 3 feet.
THURSDAY
East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered
showers in the afternoon.
THURSDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 3 feet.
AMZ745-102015
Coastal Waters of Southwestern Puerto Rico out 10 NM
330 AM AST Sun May 10 2026
SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
East winds 5 to 10 knots, becoming southeast 15 to 20 knots
with gusts up to 30 knots. Seas 2 to 4 feet, occasionally to 5 feet.
Wave Detail: Southeast 3 feet at 5 seconds. Isolated showers late
this morning and afternoon.
TONIGHT
East winds 10 to 15 knots with gusts up to 25 knots,
diminishing to 5 to 10 knots after midnight. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: Southeast 3 feet at 6 seconds.
MONDAY
East winds 10 to 15 knots with gusts up to 25 knots. Seas
2 to 3 feet. Wave Detail: Southeast 2 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. Wave Detail: Southeast
2 feet at 6 seconds.
TUESDAY
Southeast winds 10 to 15 knots with gusts up to 25 knots.
Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds.
TUESDAY NIGHT
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.
WEDNESDAY
Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas 2 to 3 feet.
THURSDAY
Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
THURSDAY NIGHT
Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
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