596
FZCA52 TJSJ 170821
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
421 AM AST Sat May 17 2025

Puerto Rico and the U.S. Virgin Islands Waters

AMZ700-172130-
421 AM AST Sat May 17 2025

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
A surface trough will influence light to moderate easterly winds. A
deep trough with its axis currently located to the west of the region
will continue to support unsettled weather conditions today, with a
high chance of thunderstorm development mainly across the eastern
local waters. These storms could lead to locally higher winds and
seas. In addition, hazy conditions are likely over the next few days
due to the presence of Saharan dust.

$$

AMZ711-172130-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
421 AM AST Sat May 17 2025

.TODAY...East winds 10 to 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 and north 1 foot at 13 seconds. Isolated thunderstorms.
Numerous showers until late afternoon, then scattered showers late.
.TONIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots
after midnight. Seas 3 to 4 feet, occasionally to 5 feet. Wave
Detail: East 4 feet at 8 seconds and northeast 2 feet at 12 seconds.
Scattered showers after midnight.
.SUNDAY...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally
to 5 feet. Wave Detail: East 3 feet at 8 seconds and northeast
2 feet at 12 seconds. Scattered showers.
.SUNDAY NIGHT...East winds around 10 knots with gusts up to
20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
East 3 feet at 8 seconds and northeast 1 foot at 12 seconds.
Scattered showers.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally
to 5 feet. Wave Detail: East 3 feet at 8 seconds and northeast
1 foot at 11 seconds. Scattered showers in the morning.
.MONDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Seas around 3 feet, occasionally to 4 feet.
Wave Detail: East 3 feet at 8 seconds and northeast 1 foot at
11 seconds. Scattered showers.
.TUESDAY...East winds 10 to 15 knots, diminishing to 5 to 10 knots
in the afternoon. Seas around 3 feet, occasionally to 4 feet.
Scattered showers in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Seas around 3 feet, occasionally to 4 feet.
Scattered showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas around 3 feet,
occasionally to 4 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ712-172130-
Coastal Waters of Northern Puerto Rico out 10 NM-
421 AM AST Sat May 17 2025

.TODAY...East winds 5 to 10 knots. Seas around 3 feet, occasionally
to 4 feet. Wave Detail: Northeast 3 feet at 8 seconds and north
1 foot at 12 seconds. Numerous showers with isolated thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas around 3 feet,
occasionally to 4 feet. Wave Detail: East 3 feet at 8 seconds and
north 1 foot at 13 seconds.
.SUNDAY...East winds 5 to 10 knots. Seas around 3 feet, occasionally
to 4 feet. Wave Detail: Northeast 3 feet at 7 seconds and northeast
1 foot at 12 seconds. Scattered showers in the afternoon.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet,
occasionally to 4 feet. Wave Detail: East 3 feet at 8 seconds and
northeast 1 foot 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 around 3 feet,
occasionally to 4 feet. Wave Detail: East 3 feet at 8 seconds and
northeast 1 foot at 11 seconds. Scattered showers in the morning,
then numerous showers in the afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Wave Detail: East 3 feet at 8 seconds and
northeast 1 foot at 11 seconds. Scattered showers in the evening,
then numerous showers after midnight.
.TUESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in
the afternoon. Seas 2 to 3 feet, occasionally to 4 feet. Scattered
showers.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers.
.WEDNESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots
in the afternoon. Seas 2 to 3 feet, occasionally to 4 feet.
Scattered showers.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ716-172130-
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM-
421 AM AST Sat May 17 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TODAY...East winds 10 to 15 knots, increasing to 15 to 20 knots
late this morning, then diminishing to 10 to 15 knots this
afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
East 3 feet at 7 seconds and north 1 foot at 11 seconds. Isolated
thunderstorms. Numerous showers until late afternoon, then scattered
showers late.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally
to 4 feet. Wave Detail: East 3 feet at 6 seconds and north 1 foot at
12 seconds. Scattered showers after midnight.
.SUNDAY...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally
to 4 feet. Wave Detail: East 2 feet at 7 seconds and north 2 feet at
12 seconds. Scattered showers.
.SUNDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Wave Detail: East 2 feet at 7 seconds and
north 1 foot at 11 seconds. Scattered showers.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots in the afternoon. Seas 2 to 3 feet,
occasionally to 4 feet. Wave Detail: East 2 feet at 7 seconds and
north 1 foot at 9 seconds. Scattered showers.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 7 seconds and northeast 1 foot at 11 seconds.
Scattered showers.
.TUESDAY...East winds 5 to 10 knots. Seas around 2 feet. Scattered
showers.
.TUESDAY NIGHT...East winds around 10 knots. Seas around 2 feet.
Scattered showers.
.WEDNESDAY...East winds around 10 knots. Seas around 2 feet.
Scattered showers in the afternoon.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ723-172130-
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N-
421 AM AST Sat May 17 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TODAY...East winds 10 to 15 knots, increasing to 15 to 20 knots
late this morning and afternoon. Seas 4 to 5 feet, occasionally to
6 feet. Wave Detail: East 4 feet at 7 seconds and northeast 1 foot
at 13 seconds. Isolated thunderstorms. Numerous showers until late
afternoon, then scattered showers late.
.TONIGHT...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 5 feet at 6 seconds and northeast 1 foot at 12 seconds.
Scattered showers after midnight.
.SUNDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 4 feet, occasionally to 5 feet. Wave Detail: East 4 feet at
7 seconds and northeast 1 foot at 12 seconds. Scattered showers.
.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 7 seconds and northeast 1 foot at 12 seconds. Scattered showers.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally
to 5 feet. Wave Detail: East 3 feet at 7 seconds and northeast
1 foot at 11 seconds. Scattered showers.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet,
occasionally to 4 feet. Wave Detail: East 3 feet at 7 seconds and
northeast 1 foot at 11 seconds. Scattered showers.
.TUESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally
to 4 feet. Scattered showers.
.TUESDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Seas 2 to 3 feet, occasionally to 4 feet.
Scattered showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas around 3 feet,
occasionally to 4 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet,
occasionally to 4 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ726-172130-
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John-
421 AM AST Sat May 17 2025

.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
7 seconds. Isolated thunderstorms. Numerous showers until late
afternoon, then scattered showers late.
.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots after midnight. Seas 2 to 4 feet,
occasionally to 5 feet. Wave Detail: East 4 feet at 7 seconds.
Scattered showers in the evening, then numerous showers after
midnight.
.SUNDAY...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally
to 4 feet. Wave Detail: East 3 feet at 7 seconds. Scattered showers.
.SUNDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Wave Detail: East 3 feet at 7 seconds.
Scattered showers.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots in the afternoon. Seas 2 to 3 feet,
occasionally to 4 feet. Wave Detail: East 3 feet at 8 seconds.
Scattered showers.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Wave Detail: East 3 feet at 7 seconds.
Scattered showers.
.TUESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally
to 4 feet. Scattered showers.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers.
.WEDNESDAY...East winds around 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ733-172130-
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix-
421 AM AST Sat May 17 2025

.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
7 seconds. Showers this morning. Isolated thunderstorms until late
afternoon. Scattered showers this afternoon.
.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 4 feet at
7 seconds. Scattered showers.
.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 4 feet at
7 seconds. Scattered showers.
.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 7 seconds. Scattered showers.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots in the afternoon. Seas around 3 feet,
occasionally to 4 feet. Wave Detail: East 3 feet at 7 seconds.
Scattered showers.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet,
occasionally to 4 feet. Wave Detail: East 3 feet at 7 seconds.
Scattered showers.
.TUESDAY...East winds around 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas around 3 feet,
occasionally to 4 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet,
occasionally to 4 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ735-172130-
Coastal Waters of Southern Puerto Rico out 10 NM-
421 AM AST Sat May 17 2025

.TODAY...East winds 5 to 10 knots, increasing to 10 to 15 knots with
gusts up to 20 knots this afternoon. Seas around 3 feet,
occasionally to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds.
Isolated thunderstorms. Showers early this morning, then scattered
showers late this morning and afternoon.
.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet at
7 seconds. Scattered showers.
.SUNDAY...East winds 5 to 10 knots. Seas around 3 feet, occasionally
to 4 feet. Wave Detail: East 3 feet at 6 seconds. Numerous showers,
mainly in the morning.
.SUNDAY NIGHT...East winds 5 to 10 knots with gusts up to 20 knots.
Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet
at 6 seconds. Scattered showers.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
2 to 3 feet, occasionally to 4 feet. Wave Detail: Southeast 3 feet
at 7 seconds. Scattered showers.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds.
Scattered showers after midnight.
.TUESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet, occasionally
to 4 feet. Scattered showers in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers in the morning.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ741-172130-
Mona Passage Southward to 17N-
421 AM AST Sat May 17 2025

.TODAY...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to
5 feet. Wave Detail: East 4 feet at 7 seconds. Isolated
thunderstorms. Numerous showers, mainly 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 4 feet at
7 seconds and north 1 foot at 10 seconds. Scattered showers in the
evening.
.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 4 feet at
7 seconds and north 1 foot at 12 seconds. Numerous showers, mainly
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 7 seconds and north 1 foot at 11 seconds. Scattered showers in
the evening.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 3 feet, occasionally to 4 feet. Wave Detail: East 3 feet at
7 seconds and north 1 foot at 10 seconds. Scattered showers in the
afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Wave Detail: East 3 feet at 7 seconds and
northeast 1 foot at 9 seconds. Scattered showers.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet, occasionally
to 5 feet. Scattered showers.
.TUESDAY NIGHT...East winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Seas around 3 feet, occasionally to 4 feet.
Scattered showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ742-172130-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
421 AM AST Sat May 17 2025

.TODAY...East winds around 5 knots. Seas 2 to 3 feet, occasionally
to 4 feet. Wave Detail: Northeast 2 feet at 7 seconds and north
1 foot at 11 seconds. Isolated showers this morning, then showers
with isolated thunderstorms this afternoon.
.TONIGHT...East winds 5 to 10 knots, diminishing to around 5 knots
after midnight. Seas 2 to 3 feet, occasionally to 4 feet. Wave
Detail: East 2 feet at 7 seconds and north 1 foot at 10 seconds.
.SUNDAY...East winds around 5 knots, becoming northeast in the
afternoon. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail:
Southeast 2 feet at 6 seconds and north 1 foot at 11 seconds.
Showers in the afternoon.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Wave Detail: Northeast 2 feet at 6 seconds
and northeast 1 foot at 10 seconds. Scattered showers in the
evening.
.MONDAY...East winds around 5 knots. Seas 2 to 3 feet, occasionally
to 4 feet. Wave Detail: East 2 feet at 6 seconds and northeast
1 foot at 10 seconds. Numerous showers in the afternoon.
.MONDAY NIGHT...East winds around 5 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 6 seconds. Scattered showers in the evening.
.TUESDAY...East winds around 5 knots. Seas around 2 feet. Numerous
showers in the afternoon.
.TUESDAY NIGHT...East winds 5 to 10 knots, diminishing to around
5 knots after midnight. Seas around 2 feet. Numerous showers.
.WEDNESDAY...East winds 5 to 10 knots. Seas around 2 feet. Scattered
showers in the afternoon.
.WEDNESDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas around 2 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ745-172130-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
421 AM AST Sat May 17 2025

.TODAY...East winds around 5 knots. Seas around 2 feet. Wave Detail:
South 2 feet at 7 seconds. Isolated showers this morning, then
isolated thunderstorms early this afternoon. Scattered showers this
afternoon.
.TONIGHT...East winds 5 to 10 knots, increasing to 10 to 15 knots
with gusts up to 20 knots after midnight. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.SUNDAY...East winds 5 to 10 knots, diminishing to around 5 knots in
the afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at
6 seconds. Scattered showers in the afternoon.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: South 2 feet at 6 seconds. Scattered showers in the evening.
.MONDAY...East winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. Seas around 2 feet. Wave Detail:
Southeast 2 feet at 6 seconds.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.TUESDAY...East winds 5 to 10 knots. Seas around 2 feet. Scattered
showers in the afternoon.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Scattered showers.
.WEDNESDAY...East winds 5 to 10 knots. Seas around 2 feet. Scattered
showers.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$