754
FZCA52 TJSJ 302010
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
410 PM AST Sat Aug 30 2025

Puerto Rico and the U.S. Virgin Islands Waters

AMZ700-310915-
410 PM AST Sat Aug 30 2025

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...

Local effects and sea breeze variations will promote the development
of strong thunderstorms across the western side of the islands. A
weak tropical wave moving across the Caribbean Sea, and a surface
high pressure system across the Atlantic Ocean will promote moderate
easterly winds with moderate chop across the regional waters through
early next week.

$$

AMZ711-310915-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
410 PM AST Sat Aug 30 2025

.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 3 feet. Wave Detail: East 3 feet at 7 seconds and northeast
1 foot at 10 seconds. Isolated showers.
.SUNDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 3 feet. Wave Detail: East 3 feet at 7 seconds.
.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...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail:
East 2 feet at 4 seconds and east 2 feet at 7 seconds.
.MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: East 2 feet at 4 seconds and east
2 feet at 7 seconds.
.TUESDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas
around 3 feet. Wave Detail: East 2 feet at 4 seconds and northeast
2 feet at 8 seconds.
.TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to
25 knots. Seas 3 to 4 feet.
.WEDNESDAY...East winds 10 to 15 knots. Seas around 3 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet.
.THURSDAY...East winds 10 to 15 knots. Seas 3 to 4 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet.

$$

AMZ712-310915-
Coastal Waters of Northern Puerto Rico out 10 NM-
410 PM AST Sat Aug 30 2025

.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots late. Seas around 3 feet. Wave Detail:
East 3 feet at 7 seconds and northeast 1 foot at 10 seconds.
Scattered showers with isolated thunderstorms early this evening,
then isolated showers late this evening and overnight.
.SUNDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots
with gusts up to 20 knots in the afternoon. Seas 2 to 3 feet. Wave
Detail: Northeast 2 feet at 8 seconds.
.SUNDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots after midnight. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 5 seconds and northeast 2 feet at 8 seconds.
Scattered showers after midnight.
.MONDAY...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. Wave
Detail: Northeast 2 feet at 6 seconds.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Northeast 2 feet at 6 seconds and northeast 1 foot at
11 seconds.
.TUESDAY...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. Wave
Detail: East 3 feet at 4 seconds and northeast 1 foot at 7 seconds.
.TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to
3 feet.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered
showers in the morning.
.WEDNESDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas around 3 feet.
.THURSDAY...East winds 10 to 15 knots. Seas around 3 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 3 to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ716-310915-
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM-
410 PM AST Sat Aug 30 2025

.TONIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail:
East 2 feet at 6 seconds and northeast 1 foot at 10 seconds.
Isolated showers this evening, then scattered showers after
midnight. Isolated showers late.
.SUNDAY...East winds around 10 knots. Seas 2 to 3 feet. Wave Detail:
East 2 feet at 4 seconds and northeast 2 feet at 7 seconds.
.SUNDAY NIGHT...East winds around 10 knots. Seas around 2 feet. Wave
Detail: Northeast 2 feet at 8 seconds and southeast 1 foot at
4 seconds. Scattered showers after midnight.
.MONDAY...East winds around 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds and northeast 2 feet at 7 seconds.
Scattered showers in the morning.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds and northeast 1 foot at 7 seconds.
.TUESDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
2 to 3 feet. Wave Detail: East 2 feet at 4 seconds and northeast
1 foot at 8 seconds.
.TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
.THURSDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.

$$

AMZ723-310915-
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N-
410 PM AST Sat Aug 30 2025

.TONIGHT...East winds 10 to 15 knots. Seas around 3 feet. Wave
Detail: East 3 feet at 6 seconds and northeast 1 foot at 10 seconds.
Isolated showers this evening. Isolated thunderstorms late this
evening and early morning. Scattered showers after midnight.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail:
East 3 feet at 5 seconds and northeast 2 feet at 8 seconds.
.SUNDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Seas around 2 feet. Wave Detail: East 2 feet at 6 seconds.
.MONDAY...East winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds and northeast 1 foot at 7 seconds.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 4 seconds and northeast 1 foot at 7 seconds.
.TUESDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 3 feet. Wave Detail: East 3 feet at 5 seconds and northeast
2 feet at 8 seconds. Scattered showers in the morning.
.TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas around 3 feet.
.WEDNESDAY...East winds 10 to 15 knots. Seas around 3 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet.
.THURSDAY...East winds 10 to 15 knots. Seas around 3 feet.
.THURSDAY NIGHT...East winds around 15 knots. Seas around 3 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ726-310915-
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John-
410 PM AST Sat Aug 30 2025

.TONIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail:
East 2 feet at 6 seconds. Scattered showers early this evening, then
isolated showers late this evening. Scattered showers after
midnight.
.SUNDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
East 2 feet at 6 seconds. Scattered showers in the morning.
.SUNDAY NIGHT...East winds around 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 6 seconds. Scattered showers after midnight.
.MONDAY...East winds around 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds and east 1 foot at 7 seconds.
Scattered showers in the morning.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds and east 1 foot at 7 seconds.
.TUESDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
2 to 3 feet. Wave Detail: East 2 feet at 4 seconds and east 1 foot
at 7 seconds.
.TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.WEDNESDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet.
.THURSDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Scattered showers.

$$

AMZ733-310915-
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix-
410 PM AST Sat Aug 30 2025

.TONIGHT...East winds 10 to 15 knots. Seas around 3 feet. Wave
Detail: East 2 feet at 6 seconds. Isolated showers this evening,
then scattered showers after midnight.
.SUNDAY...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 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 2 feet at 6 seconds. Scattered
showers after midnight.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
2 to 3 feet. Wave Detail: East 2 feet at 6 seconds.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 6 seconds.
.TUESDAY...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.
.TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Scattered showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas around 3 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet.
.THURSDAY...East winds 10 to 15 knots. Seas around 3 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet.
Scattered showers.

$$

AMZ735-310915-
Coastal Waters of Southern Puerto Rico out 10 NM-
410 PM AST Sat Aug 30 2025

.TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
East 2 feet at 5 seconds. Scattered showers early this evening, then
isolated showers late this evening and overnight.
.SUNDAY...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.
.SUNDAY NIGHT...East winds 5 to 10 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: East 2 feet at 5 seconds. Scattered
showers after midnight.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
2 to 3 feet. Wave Detail: East 2 feet at 5 seconds.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 5 seconds.
.TUESDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
2 to 3 feet. Wave Detail: East 2 feet at 5 seconds.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered
showers in the morning.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet.
.THURSDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots
in the afternoon. Seas 2 to 3 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 2 to 3 feet.

$$

AMZ741-310915-
Mona Passage Southward to 17N-
410 PM AST Sat Aug 30 2025

.TONIGHT...East winds 5 to 10 knots, increasing to 10 to 15 knots
with gusts up to 20 knots late this evening and overnight. Seas 2 to
3 feet. Wave Detail: East 2 feet at 6 seconds and northeast 1 foot
at 10 seconds. Isolated thunderstorms this evening. Scattered
showers.
.SUNDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds and
northeast 1 foot at 10 seconds.
.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 and
northeast 1 foot at 9 seconds. Scattered showers after midnight.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds and east
1 foot at 8 seconds.
.MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: East 2 feet at 6 seconds.
.TUESDAY...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.
.TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet.
.WEDNESDAY...East winds 10 to 15 knots. Seas around 3 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet.
.THURSDAY...East winds 10 to 15 knots. Seas around 3 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ742-310915-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
410 PM AST Sat Aug 30 2025

.TONIGHT...East winds 5 to 10 knots, increasing to 10 to 15 knots
with gusts up to 20 knots late this evening and early morning, then
diminishing to 5 to 10 knots late. Seas 2 to 3 feet. Wave Detail:
South 1 foot at 5 seconds and northeast 1 foot at 10 seconds.
Scattered showers with isolated thunderstorms early this evening.
.SUNDAY...East winds 5 to 10 knots, becoming northeast in the
afternoon. Seas around 2 feet. Wave Detail: Southeast 1 foot at
4 seconds and northeast 1 foot at 9 seconds. Numerous showers in the
afternoon.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Northeast 1 foot at 4 seconds. Scattered showers in the
evening.
.MONDAY...East winds 5 to 10 knots, diminishing to around 5 knots in
the afternoon. Seas around 2 feet. Wave Detail: East 1 foot at
5 seconds and northeast 1 foot at 8 seconds. Numerous showers in the
afternoon.
.MONDAY NIGHT...East winds around 5 knots. Seas around 2 feet. Wave
Detail: East 1 foot at 4 seconds.
.TUESDAY...East winds around 5 knots. Seas around 2 feet. Wave
Detail: East 1 foot at 5 seconds. Numerous showers in the afternoon.
.TUESDAY NIGHT...East winds around 5 knots. Seas around 2 feet.
.WEDNESDAY...East winds around 5 knots. Seas around 2 feet.
Scattered showers in the afternoon.
.WEDNESDAY NIGHT...East winds around 5 knots, increasing to 5 to
10 knots after midnight. Seas around 2 feet.
.THURSDAY...East winds 5 to 10 knots, diminishing to around 5 knots
in the afternoon. Seas 2 to 3 feet. Scattered showers in the
afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ745-310915-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
410 PM AST Sat Aug 30 2025

.TONIGHT...East winds around 5 knots. Seas around 2 feet. Wave
Detail: Southeast 1 foot at 5 seconds. Numerous showers with
isolated thunderstorms early this evening.
.SUNDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots
with gusts up to 20 knots in the afternoon. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 4 seconds. Scattered showers in the
afternoon.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 1 foot at 4 seconds.
.MONDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas around 2 feet. Wave Detail: Southeast 2 feet at 4 seconds.
Scattered showers in the afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 4 seconds.
.TUESDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
Scattered showers in the afternoon.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.WEDNESDAY...East winds 5 to 10 knots. Seas around 2 feet. Scattered
showers in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.THURSDAY...East winds 5 to 10 knots. Seas around 2 feet. Scattered
showers in the afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$