National Weather Service Marine Forecast FZCA52 TJSJ
FZCA52 TJSJ 300825
CWFSJU
Coastal Waters Forecast
National Weather Service San Juan PR
425 AM AST Sat May 30 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.
AMZ700-302130
425 AM AST Sat May 30 2026
Synopsis for Puerto Rico and the U.S. Virgin Islands Waters
A surface high pressure over the central Atlantic will promote generally moderate to locally fresh east-southeast winds during the weekend into early next week across the region. Based on the latest altimeter scans, seas remain between 3 and 5 feet, localized to 6 feet, across the Atlantic waters. Mariners must exercise caution as choppy seas could result in localized hazardous conditions for small craft. Besides the marine conditions, mariners should remain weather alert as afternoon showers and thunderstorms could move over the coastal waters of northwestern Puerto Rico today. Additionally, moisture content associated with a tropical wave approaching the eastern Caribbean Basin will likely enhance shower and thunderstorm activity across the regional waters on Sunday. Hazards may include gusty winds, reduced visibility, and lightning. Moderate concentrations of Saharan dust will persist this weekend, becoming higher on Monday and Tuesday, resulting in hazy skies, reduced visibility, and poor air quality.
AMZ711-302130
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N
425 AM AST Sat May 30 2026
SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
Southeast winds 10 to 15 knots with gusts up to 25 knots,
becoming east 15 to 20 knots with gusts up to 30 knots late. Seas
3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at
6 seconds and northeast 1 foot at 11 seconds. Isolated showers this
morning.
TONIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas
3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at
6 seconds and northeast 1 foot at 10 seconds.
SUNDAY
Southeast 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 and northeast 1 foot at 10 seconds.
SUNDAY 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 7 seconds and northeast 1 foot at 11 seconds.
MONDAY
Southeast 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 4 feet at 7 seconds and north 2 feet at
12 seconds.
MONDAY NIGHT
Southeast 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 7 seconds and north 2 feet at 12 seconds.
TUESDAY
East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally
to 8 feet.
TUESDAY NIGHT
East winds 15 to 20 knots. Seas 5 to 6 feet,
occasionally to 8 feet.
WEDNESDAY
East winds 15 to 20 knots. Seas 5 to 6 feet,
occasionally to 8 feet.
WEDNESDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 4 to 5 feet, occasionally to 6 feet.
AMZ712-302130
Coastal Waters of Northern Puerto Rico out 10 NM
425 AM AST Sat May 30 2026
SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
Southeast winds 5 to 10 knots, becoming east 10 to 15 knots
late this morning, then increasing to 15 to 20 knots early this
afternoon, diminishing to 10 to 15 knots late. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds and
northeast 1 foot at 11 seconds. Isolated showers late this morning
and afternoon.
TONIGHT
East winds 10 to 15 knots, becoming southeast 5 to
10 knots after midnight. Gusts up to 25 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Wave Detail: East 3 feet at 6 seconds and
northeast 1 foot at 11 seconds.
SUNDAY
East winds 5 to 10 knots, increasing to 10 to 15 knots in
the afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at
6 seconds and northeast 1 foot at 10 seconds. Scattered showers in
the afternoon.
SUNDAY NIGHT
East winds 10 to 15 knots, becoming southeast 5 to
10 knots after midnight. Seas 2 to 3 feet. Wave Detail: East 3 feet
at 6 seconds and northeast 1 foot at 11 seconds. Scattered showers
after midnight.
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 3 feet at
6 seconds and north 1 foot at 11 seconds.
MONDAY NIGHT
Southeast 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 6 seconds and north 2 feet at 12 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 10 to 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet.
WEDNESDAY
East winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. Seas 4 to 5 feet, occasionally to 6 feet.
Scattered showers in the morning.
WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Scattered showers.
AMZ716-302130
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM
425 AM AST Sat May 30 2026
TODAY
East winds around 15 knots with gusts up to 20 knots. Seas
3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at
5 seconds and north 1 foot at 11 seconds. Isolated showers late this
morning and afternoon.
TONIGHT
East winds around 15 knots with gusts up to 25 knots.
Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet
at 5 seconds and north 1 foot at 11 seconds.
SUNDAY
Southeast winds 10 to 15 knots with gusts up to 25 knots.
Seas around 3 feet. Wave Detail: Southeast 3 feet at 5 seconds and
north 1 foot at 10 seconds. Scattered showers in the morning.
SUNDAY NIGHT
East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds and
north 1 foot at 10 seconds. Scattered showers after midnight.
MONDAY
Southeast winds around 15 knots with gusts up to 25 knots.
Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds and
north 1 foot at 8 seconds.
MONDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots.
Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast
4 feet at 5 seconds and north 2 feet at 11 seconds.
TUESDAY
East winds 15 to 20 knots. Seas 3 to 5 feet, occasionally
to 6 feet.
TUESDAY NIGHT
East winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
WEDNESDAY
East winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Scattered showers in the morning.
WEDNESDAY NIGHT
East winds around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers.
AMZ723-302130
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N
425 AM AST Sat May 30 2026
TODAY
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 11 seconds. Isolated showers this
morning.
TONIGHT
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 5 seconds and northeast 1 foot at 11 seconds.
SUNDAY
East winds 10 to 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 north 1 foot at 10 seconds. Scattered showers in the
morning.
SUNDAY NIGHT
East winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet
at 6 seconds and north 1 foot at 11 seconds. Scattered showers after
midnight.
MONDAY
East winds 15 to 20 knots with gusts up to 25 knots. Seas
around 4 feet, occasionally to 5 feet. Wave Detail: Southeast 4 feet
at 6 seconds and north 1 foot at 11 seconds.
MONDAY NIGHT
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 and north 1 foot at 12 seconds.
TUESDAY
East winds 15 to 20 knots. Seas around 5 feet,
occasionally to 6 feet.
TUESDAY NIGHT
East winds 15 to 20 knots. Seas around 5 feet,
occasionally to 6 feet.
WEDNESDAY
East winds around 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet.
WEDNESDAY NIGHT
East winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet.
Scattered showers.
AMZ726-302130
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John
425 AM AST Sat May 30 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 4 feet at
6 seconds. Isolated 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.
SUNDAY
Southeast 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 6 seconds. Scattered showers.
SUNDAY NIGHT
East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: East 3 feet at 6 seconds. Scattered
showers after midnight.
MONDAY
Southeast winds 10 to 15 knots with gusts up to 25 knots.
Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast
3 feet at 6 seconds.
MONDAY NIGHT
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.
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 3 to 4 feet,
occasionally to 5 feet.
WEDNESDAY
East winds 15 to 20 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.
AMZ733-302130
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix
425 AM AST Sat May 30 2026
TODAY
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. Isolated showers late this morning. Isolated showers
late.
TONIGHT
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.
SUNDAY
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
6 seconds. Scattered showers in the morning.
SUNDAY NIGHT
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 6 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: Southeast 4 feet
at 6 seconds.
MONDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 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 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 15 to 20 knots. Seas 4 to 5 feet,
occasionally to 6 feet.
WEDNESDAY NIGHT
East winds around 15 knots. Seas around 4 feet,
occasionally to 5 feet.
AMZ735-302130
Coastal Waters of Southern Puerto Rico out 10 NM
425 AM AST Sat May 30 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: East 4 feet at
6 seconds. Isolated showers late this morning.
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
6 seconds.
SUNDAY
East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. Scattered
showers in the morning.
SUNDAY NIGHT
East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: East 3 feet at 6 seconds.
MONDAY
East winds 10 to 15 knots with gusts up to 20 knots. Seas
2 to 3 feet. Wave Detail: East 3 feet at 6 seconds.
MONDAY NIGHT
East winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. 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 5 feet, occasionally
to 6 feet.
TUESDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers.
WEDNESDAY
East winds 10 to 15 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Scattered showers in the morning.
WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
AMZ741-302130
Mona Passage Southward to 17N
425 AM AST Sat May 30 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 4 feet at
6 seconds and northeast 1 foot at 11 seconds. Isolated showers 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: Southeast 4 feet
at 6 seconds and northeast 1 foot at 11 seconds.
SUNDAY
Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Southeast
4 feet at 6 seconds.
SUNDAY NIGHT
East winds 10 to 15 knots with gusts up to 20 knots.
Seas around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds.
MONDAY
Southeast 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.
MONDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots.
Seas 3 to 5 feet, occasionally to 6 feet. Wave Detail: Southeast
4 feet at 6 seconds and north 1 foot at 11 seconds.
TUESDAY
East winds 15 to 20 knots. Seas 4 to 6 feet, occasionally
to 8 feet.
TUESDAY NIGHT
East winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas around 5 feet, occasionally to 6 feet.
WEDNESDAY
East winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas around 5 feet, occasionally to
6 feet. Numerous showers in the afternoon.
WEDNESDAY NIGHT
East winds 10 to 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet.
AMZ742-302130
Coastal Waters of Northwestern Puerto Rico out 10 NM
425 AM AST Sat May 30 2026
TODAY
East winds 5 to 10 knots, diminishing to around 5 knots
late this morning and afternoon. Seas 2 to 3 feet. Wave Detail: East
2 feet at 6 seconds and northeast 1 foot at 11 seconds. Isolated
showers early this afternoon. Numerous showers with isolated
thunderstorms late.
TONIGHT
Southeast winds around 5 knots, becoming east after
midnight. Seas around 2 feet. Wave Detail: Southeast 2 feet at
6 seconds and northeast 1 foot at 11 seconds.
SUNDAY
Southeast winds 5 to 10 knots, becoming east 10 to
15 knots with gusts up to 20 knots in the afternoon. Seas 2 to
3 feet. Wave Detail: East 2 feet at 6 seconds. Scattered showers in
the afternoon.
SUNDAY NIGHT
East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 5 seconds. Scattered showers in the evening.
MONDAY
East winds 5 to 10 knots. Seas around 2 feet. Wave Detail:
Southeast 2 feet at 5 seconds and northeast 1 foot at 11 seconds.
MONDAY NIGHT
East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds and
north 2 feet at 12 seconds.
TUESDAY
East winds 10 to 15 knots, diminishing to 5 to 10 knots
in the afternoon. Seas 2 to 4 feet, occasionally to 5 feet.
Scattered showers in the afternoon.
TUESDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet.
WEDNESDAY
Northeast winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Numerous showers in the afternoon.
WEDNESDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 4 feet,
occasionally to 5 feet.
Winds and seas higher in and near thunderstorms.
AMZ745-302130
Coastal Waters of Southwestern Puerto Rico out 10 NM
425 AM AST Sat May 30 2026
TODAY
Southeast winds 10 to 15 knots with gusts up to 25 knots.
Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds.
Scattered showers late.
TONIGHT
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.
SUNDAY
Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at 5 seconds.
SUNDAY NIGHT
East winds 5 to 10 knots, becoming southeast 10 to
15 knots after midnight. Seas around 2 feet. Wave Detail: Southeast
2 feet at 5 seconds.
MONDAY
Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 4 seconds.
MONDAY NIGHT
Southeast winds 10 to 15 knots, becoming east 15 to
20 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast
2 feet at 5 seconds.
TUESDAY
Southeast winds 15 to 20 knots. Seas 2 to 4 feet,
occasionally to 5 feet.
TUESDAY NIGHT
East winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet.
WEDNESDAY
Southeast winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Scattered showers in the afternoon.
WEDNESDAY NIGHT
Southeast winds 10 to 15 knots, becoming east
5 to 10 knots after midnight. Seas 2 to 4 feet, occasionally to
5 feet.
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