672
FZCA52 TJSJ 160815
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
415 AM AST Wed Jul 16 2025

Puerto Rico and the U.S. Virgin Islands Waters

AMZ700-162115-
415 AM AST Wed Jul 16 2025

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
A tropical wave will bring increasing winds, showers, and isolated
thunderstorms from today into Thursday morning. Moderate to fresh
easterly winds and choppy seas are expected across the regional
waters at least through Thursday night. A Saharan Air Layer moving
behind the tropical wave will promote hazy skies on Thursday and
Friday. Another disturbance is anticipated at the end of the weekend
potentially increasing shower activity across the waters.

$$

AMZ711-162115-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
415 AM AST Wed Jul 16 2025

...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. Scattered showers early this morning. Isolated showers
late this morning, then scattered showers with isolated
thunderstorms this afternoon.
.TONIGHT...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
8 seconds. Scattered showers.
.THURSDAY...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. Scattered showers.
.THURSDAY NIGHT...East winds 15 to 20 knots with gusts up to
25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail:
East 5 feet at 8 seconds and northeast 1 foot at 10 seconds.
Scattered showers.
.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 5 feet at
8 seconds and northeast 1 foot at 9 seconds. Scattered showers in
the morning.
.FRIDAY NIGHT...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 7 seconds and northeast 1 foot at 9 seconds. Scattered showers in
the evening, then numerous showers after midnight.
.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 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers.
.SUNDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally
to 5 feet. Scattered showers in the morning.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ712-162115-
Coastal Waters of Northern Puerto Rico out 10 NM-
415 AM AST Wed Jul 16 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: Northeast 5 feet at 7 seconds. Scattered
showers early this morning, then isolated showers late this morning.
Scattered showers with isolated thunderstorms this afternoon.
.TONIGHT...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 7 seconds. Scattered showers in the evening.
.THURSDAY...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: Northeast 5 feet at 8 seconds.
Scattered showers.
.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:
Northeast 5 feet at 9 seconds. Scattered showers.
.FRIDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas
around 4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet
at 8 seconds. Scattered showers.
.FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots.
Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast
4 feet at 8 seconds. Scattered showers.
.SATURDAY...East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
.SATURDAY NIGHT...East winds 10 to 15 knots, becoming southeast 5 to
10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet.
.SUNDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally
to 5 feet. Scattered showers.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ716-162115-
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM-
415 AM AST Wed Jul 16 2025

...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 4 feet at
6 seconds. Numerous showers. Isolated thunderstorms this afternoon.
.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
6 seconds. Scattered showers after midnight.
.THURSDAY...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 6 seconds. Scattered showers in the morning.
.THURSDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
Northeast 4 feet at 7 seconds and southeast 2 feet at 4 seconds.
Scattered showers.
.FRIDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
2 to 4 feet, occasionally to 5 feet. Wave Detail: East 3 feet at
7 seconds and northeast 1 foot at 10 seconds. Scattered showers.
.FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: Northeast
3 feet at 7 seconds and southeast 2 feet at 4 seconds. Scattered
showers.
.SATURDAY...East winds 10 to 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers in the morning.
.SATURDAY NIGHT...East winds around 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers.
.SUNDAY...East winds around 15 knots. Seas 2 to 3 feet, occasionally
to 4 feet. Scattered showers in the morning.
.SUNDAY NIGHT...East winds around 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ723-162115-
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N-
415 AM AST Wed Jul 16 2025

...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 5 feet at
7 seconds. Scattered showers. Isolated thunderstorms this afternoon.
.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
7 seconds.
.THURSDAY...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. Scattered showers in the morning.
.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:
East 4 feet at 7 seconds and northeast 1 foot at 10 seconds.
Scattered showers after midnight.
.FRIDAY...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
6 seconds and northeast 1 foot at 10 seconds. Scattered showers in
the morning.
.FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 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. Scattered
showers.
.SATURDAY...East winds 10 to 15 knots. Seas around 3 feet,
occasionally to 4 feet.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet,
occasionally to 4 feet.
.SUNDAY...East winds around 15 knots. Seas around 4 feet,
occasionally to 5 feet. Scattered showers in the morning.
.SUNDAY NIGHT...East winds around 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ726-162115-
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John-
415 AM AST Wed Jul 16 2025

...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. Isolated showers early this morning, then numerous
showers late this morning and afternoon. Isolated thunderstorms this
afternoon.
.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.
.THURSDAY...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. 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:
East 4 feet at 7 seconds.
.FRIDAY...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.
.FRIDAY NIGHT...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 6 seconds. Scattered showers after midnight.
.SATURDAY...East winds 10 to 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers in the morning.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 3 feet, occasionally
to 4 feet. Scattered showers.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ733-162115-
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix-
415 AM AST Wed Jul 16 2025

...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
7 seconds. Scattered showers this morning, then numerous showers
with isolated thunderstorms this afternoon.
.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. Scattered showers in the evening.
.THURSDAY...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. Scattered showers in the morning.
.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 after midnight.
.FRIDAY...East winds around 15 knots with gusts up to 20 knots. Seas
4 to 5 feet, occasionally to 6 feet. Wave Detail: East 3 feet at
7 seconds.
.FRIDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet.
Wave Detail: East 3 feet at 7 seconds. Scattered showers after
midnight.
.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 10 to 15 knots. Seas around 3 feet,
occasionally to 4 feet.
.SUNDAY...East winds around 15 knots. Seas around 3 feet,
occasionally to 4 feet.
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ735-162115-
Coastal Waters of Southern Puerto Rico out 10 NM-
415 AM AST Wed Jul 16 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TODAY...East winds 10 to 15 knots with gusts up to 25 knots,
increasing to 15 to 20 knots with gusts up to 30 knots this
afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail:
Southeast 4 feet at 6 seconds. Scattered showers early this morning,
then isolated showers late this morning. Scattered showers with
isolated thunderstorms this afternoon.
.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: Southeast 4 feet at 6 seconds. Scattered showers in the
evening.
.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. Wave
Detail: Southeast 4 feet at 6 seconds.
.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 6 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 3 feet
at 6 seconds.
.FRIDAY 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
3 feet at 6 seconds. Scattered showers in the evening.
.SATURDAY...East winds 10 to 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 3 feet, occasionally
to 4 feet.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ741-162115-
Mona Passage Southward to 17N-
415 AM AST Wed Jul 16 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TODAY...East winds 15 to 20 knots, diminishing to 10 to 15 knots
late this morning and afternoon. Seas 3 to 5 feet, occasionally to
6 feet. Wave Detail: East 4 feet at 7 seconds. Numerous showers.
Isolated thunderstorms this afternoon.
.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 4 feet at
7 seconds. Scattered showers in the evening.
.THURSDAY...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 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 after midnight.
.FRIDAY...East winds 10 to 15 knots with gusts up to 20 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. Wave Detail: Southeast
3 feet at 7 seconds and northeast 3 feet at 8 seconds. Numerous
showers, mainly in the evening.
.SATURDAY...East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
.SUNDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally
to 5 feet.
.SUNDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ742-162115-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
415 AM AST Wed Jul 16 2025

.TODAY...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 7 seconds and south 1 foot at 6 seconds. Isolated showers this
morning, then numerous showers with isolated thunderstorms this
afternoon.
.TONIGHT...East winds 10 to 15 knots, diminishing to 5 to 10 knots
after midnight. Gusts up to 25 knots. Seas 2 to 4 feet, occasionally
to 5 feet. Wave Detail: Northeast 3 feet at 7 seconds and south
1 foot at 6 seconds. Scattered showers in the evening.
.THURSDAY...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. Numerous showers in the afternoon.
.THURSDAY NIGHT...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 7 seconds and south 1 foot at 6 seconds.
.FRIDAY...East winds 5 to 10 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: Northeast 3 feet at
8 seconds and south 1 foot at 6 seconds. Scattered showers in the
afternoon.
.FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast
3 feet at 6 seconds and south 1 foot at 6 seconds.
.SATURDAY...East winds 5 to 10 knots, diminishing to around 5 knots
in the afternoon. Seas 2 to 3 feet, occasionally to 4 feet.
Scattered showers in the afternoon.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Scattered showers.
.SUNDAY...East winds around 5 knots. Seas 2 to 3 feet, occasionally
to 4 feet. Scattered showers in the afternoon.
.SUNDAY NIGHT...East winds around 5 knots. Seas 2 to 3 feet,
occasionally to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ745-162115-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
415 AM AST Wed Jul 16 2025

.TODAY...East winds around 5 knots, increasing to 5 to 10 knots this
afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at
6 seconds. Showers with isolated thunderstorms this afternoon.
.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas
2 to 3 feet, occasionally to 4 feet. Wave Detail: East 2 feet at
5 seconds. Scattered showers in the evening.
.THURSDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots
with gusts up to 25 knots in the afternoon. Seas 2 to 3 feet,
occasionally to 4 feet. Wave Detail: Southeast 2 feet at 6 seconds.
Scattered showers in the afternoon.
.THURSDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail:
Southeast 2 feet at 6 seconds.
.FRIDAY...East winds 5 to 10 knots, becoming southeast in the
afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at
6 seconds. Scattered showers in the afternoon.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds. Scattered showers in the
evening.
.SATURDAY...East winds 5 to 10 knots. Seas around 2 feet. Scattered
showers in the afternoon.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.SUNDAY...East winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. Seas 2 to 3 feet, occasionally to 4 feet.
Scattered showers in the afternoon.
.SUNDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$