545
FZCA52 TJSJ 060813
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
413 AM AST Sat Sep 6 2025

Puerto Rico and the U.S. Virgin Islands Waters

AMZ700-062115-
413 AM AST Sat Sep 6 2025

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
The trailing moisture of a tropical wave moving into the central
Caribbean, interacting with a mid to upper level trough will promote
showers and thunderstorms across the regional waters today. The
surface high pressure across the Central Atlantic, promoting moderate
to locally fresh easterly winds will result in moderate chops to
choppy conditions this weekend into early next week. The National
Hurricane Center is monitoring Invest 91L over the central tropical
Atlantic. While a drier air mass is limiting the potential for
development, this system is likely to be near the Lesser Antilles by
the middle to latter part of next week. Mariners should remain
attentive to forecast updates in the coming days.

$$

AMZ711-062115-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
413 AM AST Sat Sep 6 2025

.TODAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
3 to 4 feet. Wave Detail: East 3 feet at 8 seconds and southeast
1 foot at 3 seconds. Numerous showers early this morning. Isolated
thunderstorms this morning. Scattered showers late this morning and
afternoon.
.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas
3 to 4 feet. Wave Detail: East 3 feet at 8 seconds and southeast
1 foot at 5 seconds. Scattered showers in the evening, then numerous
showers after midnight.
.SUNDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas
3 to 4 feet. Wave Detail: East 4 feet at 7 seconds. Scattered
showers in the morning.
.SUNDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 3 to 4 feet. Wave Detail: East 4 feet
at 6 seconds. Scattered showers.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
4 to 5 feet. Wave Detail: East 4 feet at 7 seconds.
.MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots.
Seas 4 to 5 feet. Wave Detail: East 4 feet at 8 seconds. Scattered
showers after midnight.
.TUESDAY...East winds 10 to 15 knots. Seas around 4 feet. Scattered
showers in the morning.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 5 feet.
Scattered showers.
.WEDNESDAY...East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered
showers.
.WEDNESDAY NIGHT...East winds 15 to 20 knots, becoming southeast
10 to 15 knots after midnight. Seas 5 to 6 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ712-062115-
Coastal Waters of Northern Puerto Rico out 10 NM-
413 AM AST Sat Sep 6 2025

.TODAY...East winds 5 to 10 knots, increasing to 10 to 15 knots this
afternoon. Gusts up to 25 knots this afternoon. Seas around 3 feet.
Wave Detail: Northeast 3 feet at 8 seconds. Isolated thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas around 3 feet. Wave
Detail: Northeast 3 feet at 8 seconds. Scattered showers in the
evening, then numerous showers after midnight.
.SUNDAY...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. Wave
Detail: East 3 feet at 6 seconds. Scattered showers in the
afternoon.
.SUNDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 3 to 4 feet. Wave Detail: East 3 feet
at 6 seconds. Scattered showers in the evening.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
3 to 4 feet. Wave Detail: Northeast 3 feet at 7 seconds. Scattered
showers.
.MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots after midnight. Seas 3 to 4 feet. Wave
Detail: Northeast 3 feet at 7 seconds.
.TUESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in
the afternoon. Seas 3 to 4 feet. Scattered showers in the afternoon.
.TUESDAY NIGHT...East winds 10 to 15 knots, becoming southeast 5 to
10 knots after midnight. Seas 3 to 4 feet. Scattered showers.
.WEDNESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots
in the afternoon. Seas 3 to 4 feet. Numerous showers in the
afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming southeast
10 to 15 knots after midnight. Seas 4 to 5 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ716-062115-
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM-
413 AM AST Sat Sep 6 2025

.TODAY...East winds around 10 knots. Seas 2 to 3 feet. Wave Detail:
East 3 feet at 8 seconds and southeast 1 foot at 4 seconds. Isolated
thunderstorms.
.TONIGHT...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. Numerous
showers.
.SUNDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 3 feet. Wave Detail: East 3 feet at 4 seconds and northeast
2 feet at 7 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.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
3 to 4 feet. Wave Detail: Northeast 3 feet at 7 seconds and
southeast 2 feet at 4 seconds. Scattered showers in the afternoon.
.MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. Wave Detail: East 3 feet at 6 seconds.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered
showers.
.TUESDAY NIGHT...East winds 15 to 20 knots. Seas 2 to 4 feet.
Scattered showers.
.WEDNESDAY...East winds 15 to 20 knots. Seas 3 to 4 feet. Numerous
showers, mainly in the morning.
.WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet.
Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ723-062115-
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N-
413 AM AST Sat Sep 6 2025

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

Winds and seas higher in and near thunderstorms.

$$

AMZ726-062115-
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John-
413 AM AST Sat Sep 6 2025

.TODAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 5 seconds and east 2 feet at 8 seconds.
Scattered showers with isolated thunderstorms.
.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas
2 to 3 feet. Wave Detail: East 2 feet at 7 seconds. Scattered
showers in the evening, then numerous showers after midnight.
.SUNDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 3 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 around 3 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
3 to 4 feet. Wave Detail: East 3 feet at 6 seconds. Scattered
showers.
.MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. Wave Detail: East 3 feet at 6 seconds.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered
showers in the morning, then numerous showers in the afternoon.
.TUESDAY NIGHT...East winds 15 to 20 knots. Seas 2 to 4 feet.
Scattered showers.
.WEDNESDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. Seas 3 to 4 feet. Numerous showers.
.WEDNESDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet.
Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ733-062115-
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix-
413 AM AST Sat Sep 6 2025

.TODAY...East winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail:
East 3 feet at 7 seconds. Scattered showers with isolated
thunderstorms this morning. Isolated showers early this afternoon.
Scattered showers with isolated thunderstorms late.
.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. Numerous
showers.
.SUNDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
3 to 4 feet. Wave Detail: East 3 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. Wave Detail: East 3 feet at 6 seconds. Scattered
showers.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
3 to 4 feet. Wave Detail: East 3 feet at 6 seconds. Scattered
showers.
.MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 25 knots.
Seas 3 to 4 feet. Wave Detail: East 3 feet at 6 seconds.
.TUESDAY...East winds 10 to 15 knots. Seas 3 to 4 feet. Scattered
showers.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet.
Scattered showers.
.WEDNESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots
in the afternoon. Seas 3 to 4 feet. Scattered showers.
.WEDNESDAY NIGHT...East winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 4 to 5 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ735-062115-
Coastal Waters of Southern Puerto Rico out 10 NM-
413 AM AST Sat Sep 6 2025

.TODAY...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 with isolated thunderstorms this morning, then isolated
showers this afternoon.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
East 3 feet at 6 seconds. Numerous showers after midnight.
.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.
.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.
.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.
.MONDAY NIGHT...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...East winds 5 to 10 knots, increasing to 10 to 15 knots in
the afternoon. Seas 2 to 3 feet.
.TUESDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 2 to 3 feet. Scattered showers.
.WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered
showers.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ741-062115-
Mona Passage Southward to 17N-
413 AM AST Sat Sep 6 2025

.TODAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
3 to 4 feet. Wave Detail: Northeast 4 feet at 7 seconds. Numerous
showers this morning. Isolated thunderstorms. Scattered showers this
afternoon.
.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. Scattered
showers in the evening, then numerous showers after midnight.
.SUNDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds and
northeast 1 foot at 8 seconds.
.SUNDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 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. Seas
around 3 feet. Wave Detail: East 3 feet at 7 seconds.
.MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. Wave Detail: East 3 feet at 6 seconds. Scattered
showers in the evening.
.TUESDAY...East winds 10 to 15 knots. Seas 3 to 4 feet.
.TUESDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas around 3 feet.
.WEDNESDAY...East winds 5 to 10 knots. Seas around 3 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ742-062115-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
413 AM AST Sat Sep 6 2025

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

Winds and seas higher in and near thunderstorms.

$$

AMZ745-062115-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
413 AM AST Sat Sep 6 2025

.TODAY...East winds 5 to 10 knots, increasing to 10 to 15 knots with
gusts up to 20 knots late this morning and afternoon. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds and north 1 foot
at 7 seconds. Isolated showers early this morning. Scattered showers
early this afternoon, then numerous showers with isolated
thunderstorms late.
.TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 6 seconds and north 1 foot at 6 seconds.
.SUNDAY...East winds 5 to 10 knots, becoming southeast 10 to
15 knots with gusts up to 20 knots in the afternoon. Seas 2 to
3 feet. Wave Detail: Southeast 2 feet at 6 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: Southeast 2 feet at 5 seconds. Scattered showers in the
evening.
.MONDAY...East 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.
.MONDAY NIGHT...East 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 evening.
.TUESDAY...East winds 5 to 10 knots. Seas around 2 feet.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.WEDNESDAY...East winds around 5 knots, becoming southeast in the
afternoon. Seas around 2 feet. Scattered showers in the afternoon.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$