512
FZCA52 TJSJ 161922
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
322 PM AST Wed Jul 16 2025

Puerto Rico and the U.S. Virgin Islands Waters

AMZ700-170815-
322 PM 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 through at least 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.

$$

AMZ711-170815-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
322 PM AST Wed Jul 16 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.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. Numerous showers with isolated thunderstorms early this
evening, then scattered showers late this evening and overnight.
.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
30 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
7 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 4 to 5 feet, occasionally to 6 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 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 11 seconds. Scattered showers
in the morning.
.SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas around 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 around 4 feet,
occasionally to 5 feet.
.MONDAY...East winds 10 to 15 knots. Seas around 4 feet,
occasionally to 5 feet.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet,
occasionally to 6 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ712-170815-
Coastal Waters of Northern Puerto Rico out 10 NM-
322 PM AST Wed Jul 16 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.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. Isolated thunderstorms this evening.
Scattered showers.
.THURSDAY...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 7 seconds. Scattered showers.
.THURSDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 4 to 6 feet, occasionally to 8 feet.
Wave Detail: Northeast 5 feet at 7 seconds and northeast 1 foot at
9 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: Northeast 4 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 25 knots.
Seas 3 to 4 feet, occasionally to 5 feet. Wave Detail: Northeast
4 feet at 8 seconds. Scattered showers.
.SATURDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots
in the afternoon. Seas 3 to 4 feet, occasionally to 5 feet. Wave
Detail: Northeast 3 feet at 7 seconds and northeast 1 foot at
10 seconds.
.SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 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.
.MONDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots in
the afternoon. Seas 3 to 4 feet, occasionally to 5 feet.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ716-170815-
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM-
322 PM AST Wed Jul 16 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.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
6 seconds. Isolated showers until early morning, then scattered
showers late.
.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 around 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
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 NIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Seas around 3 feet, occasionally to 4 feet. Wave Detail: Northeast
3 feet at 7 seconds and southeast 1 foot at 4 seconds. Scattered
showers.
.SATURDAY...East winds around 10 knots. Seas 2 to 3 feet,
occasionally to 4 feet. Wave Detail: Northeast 3 feet at 7 seconds
and southeast 1 foot at 4 seconds. Scattered showers in the morning.
.SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 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 in the morning.
.SUNDAY NIGHT...East winds around 15 knots. Seas 2 to 3 feet,
occasionally to 4 feet.
.MONDAY...East winds around 15 knots. Seas 3 to 4 feet, occasionally
to 5 feet. Scattered showers in the morning.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet.

$$

AMZ723-170815-
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N-
322 PM AST Wed Jul 16 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.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. Isolated showers.
.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 around 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 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: East 3 feet
at 6 seconds and northeast 1 foot at 9 seconds. Scattered showers.
.SATURDAY...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 and northeast 1 foot at 11 seconds.
.SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 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 around 4 feet,
occasionally to 5 feet.
.MONDAY...East winds 10 to 15 knots. Seas around 4 feet,
occasionally to 5 feet.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet,
occasionally to 6 feet.

$$

AMZ726-170815-
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John-
322 PM AST Wed Jul 16 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.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. Isolated showers.
.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 around 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.
.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 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 in the morning.
.SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 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.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally
to 5 feet. Scattered showers in the morning.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers.

$$

AMZ733-170815-
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix-
322 PM AST Wed Jul 16 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.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. Scattered showers this evening, then isolated showers
after midnight. Scattered showers late.
.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 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 25 knots. Seas
4 to 5 feet, occasionally to 6 feet. Wave Detail: East 4 feet at
7 seconds.
.FRIDAY 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 7 seconds. Scattered showers after midnight.
.SATURDAY...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.
.SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas around 3 feet, occasionally to 4 feet.
.SUNDAY...East winds 10 to 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.
.MONDAY...East winds around 15 knots. Seas 3 to 4 feet, occasionally
to 5 feet.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet,
occasionally to 6 feet.

$$

AMZ735-170815-
Coastal Waters of Southern Puerto Rico out 10 NM-
322 PM AST Wed Jul 16 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TONIGHT...East winds 15 to 20 knots, diminishing to 10 to 15 knots
after midnight. Gusts up to 30 knots. Seas 3 to 5 feet, occasionally
to 6 feet. Wave Detail: Southeast 4 feet at 6 seconds. Scattered
showers, mainly this 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 2 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 with gusts up to 20 knots.
Seas 2 to 3 feet, occasionally to 4 feet. Wave Detail: Southeast
3 feet at 6 seconds.
.SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 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 4 feet,
occasionally to 5 feet.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally
to 5 feet.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.

$$

AMZ741-170815-
Mona Passage Southward to 17N-
322 PM AST Wed Jul 16 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.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. Isolated thunderstorms this evening. Scattered showers.
.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 5 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.
.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 4 feet at
7 seconds. Scattered showers in the afternoon.
.FRIDAY 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 and northeast 1 foot at 9 seconds. Numerous showers,
mainly in the evening.
.SATURDAY...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 9 seconds.
.SATURDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 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 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet.
Scattered showers.
.MONDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally
to 5 feet.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ742-170815-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
322 PM AST Wed Jul 16 2025

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

Winds and seas higher in and near thunderstorms.

$$

AMZ745-170815-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
322 PM AST Wed Jul 16 2025

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

Winds and seas higher in and near thunderstorms.

$$