870
FZCA52 TJSJ 070943 AAA
CWFSJU

Coastal Waters Forecast...UPDATED
National Weather Service San Juan PR
543 AM AST Tue Oct 7 2025

Puerto Rico and the U.S. Virgin Islands Waters

AMZ700-072215-
543 AM AST Tue Oct 7 2025

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
A long-period northeasterly swell will gradually continue to fade
across the local Atlantic waters and passages today. A tropical wave
will influence the region through Wednesday, increasing the frequency
of showers and thunderstorms over the regional waters, especially
during the afternoon hours, with activity further enhanced near
coastal areas by diurnally driven convection.

$$

AMZ711-072215-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
543 AM AST Tue Oct 7 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM AST EARLY THIS
MORNING...
...SMALL CRAFT SHOULD EXERCISE CAUTION AFTER 6 AM AST EARLY THIS
MORNING...

.TODAY...East winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots with gusts up to 20 knots late this
morning and afternoon. Seas 5 to 6 feet. Wave Detail: Northeast
5 feet at 13 seconds and east 3 feet at 7 seconds. Numerous showers
with isolated thunderstorms.
.TONIGHT...East winds 5 to 10 knots, becoming southeast 10 to
15 knots with gusts up to 20 knots after midnight. Seas around
5 feet. Wave Detail: Northeast 5 feet at 12 seconds and east 3 feet
at 7 seconds. Scattered showers after midnight.
.WEDNESDAY...Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas 4 to 5 feet. Wave Detail: East 4 feet at 7 seconds
and northeast 4 feet at 11 seconds. Scattered showers in the
morning.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
5 to 10 knots after midnight. Seas 4 to 5 feet. Wave Detail: East
3 feet at 7 seconds and northeast 3 feet at 10 seconds.
.THURSDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas around 4 feet. Wave Detail: East 4 feet at 8 seconds and
northeast 3 feet at 9 seconds.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas 4 to 5 feet. Wave
Detail: East 4 feet at 7 seconds and northeast 2 feet at 13 seconds.
.FRIDAY...East winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 4 to 6 feet, building to 5 to 8 feet in the
afternoon. Scattered showers in the afternoon.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 6 to 9 feet.
Scattered showers.
.SATURDAY...South winds 5 to 10 knots. Seas 6 to 8 feet. Scattered
showers.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Seas 5 to 7 feet. Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ712-072215-
Coastal Waters of Northern Puerto Rico out 10 NM-
543 AM AST Tue Oct 7 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION...

.TODAY...East winds 5 to 10 knots. Seas 5 to 6 feet. Wave Detail:
Northeast 6 feet at 13 seconds and east 2 feet at 7 seconds.
Isolated thunderstorms.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 4 to 5 feet. Wave
Detail: Northeast 5 feet at 12 seconds and east 2 feet at 7 seconds.
Scattered showers in the evening.
.WEDNESDAY...East winds 5 to 10 knots. Seas around 4 feet. Wave
Detail: Northeast 4 feet at 11 seconds and east 3 feet at 7 seconds.
Scattered showers in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots, diminishing to
around 5 knots after midnight. Seas around 4 feet. Wave Detail:
Northeast 3 feet at 7 seconds and northeast 3 feet at 10 seconds.
Scattered showers after midnight.
.THURSDAY...East winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail:
Northeast 3 feet at 9 seconds. Scattered showers in the afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots, diminishing to around
5 knots after midnight. Seas 3 to 4 feet. Wave Detail: Northeast
3 feet at 8 seconds and northeast 1 foot at 13 seconds.
.FRIDAY...East winds around 5 knots. Seas around 3 feet. Scattered
showers in the afternoon.
.FRIDAY NIGHT...South winds around 5 knots. Seas 3 to 5 feet.
.SATURDAY...South winds around 5 knots, becoming southeast in the
afternoon. Seas 5 to 7 feet. Scattered showers.
.SATURDAY NIGHT...Southeast winds around 5 knots. Seas 4 to 6 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ716-072215-
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM-
543 AM AST Tue Oct 7 2025

.TODAY...East winds 10 to 15 knots. Seas 3 to 5 feet. Wave Detail:
Northeast 5 feet at 13 seconds and east 2 feet at 6 seconds.
Isolated thunderstorms. Numerous showers until late afternoon, then
scattered showers late.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 3 to 5 feet. Wave
Detail: Northeast 5 feet at 12 seconds. Scattered showers.
.WEDNESDAY...Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 4 feet. Wave Detail: Northeast 4 feet at
11 seconds and southeast 2 feet at 5 seconds. Scattered showers.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet. Wave
Detail: Northeast 3 feet at 10 seconds and southeast 2 feet at
6 seconds. Scattered showers.
.THURSDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 4 feet. Wave Detail: East 3 feet at 7 seconds and
northeast 3 feet at 9 seconds. Scattered showers.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet. Wave
Detail: East 3 feet at 7 seconds and northeast 1 foot at 12 seconds.
Scattered showers.
.FRIDAY...North winds 5 to 10 knots, becoming south in the
afternoon. Seas 2 to 4 feet. Scattered showers.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 3 to 5 feet.
Scattered showers.
.SATURDAY...South winds 10 to 15 knots. Seas 3 to 5 feet. Scattered
showers in the morning, then numerous showers in the afternoon.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ723-072215-
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N-
543 AM AST Tue Oct 7 2025

.TODAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave
Detail: Northeast 5 feet at 13 seconds. Numerous showers with
isolated thunderstorms.
.TONIGHT...Southeast winds around 10 knots. Seas 4 to 5 feet. Wave
Detail: Northeast 4 feet at 12 seconds and southeast 2 feet at
4 seconds. Scattered showers in the evening.
.WEDNESDAY...Southeast 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 11 seconds. Scattered showers.
.WEDNESDAY NIGHT...East winds around 10 knots. Seas 4 to 5 feet.
Wave Detail: East 3 feet at 5 seconds and northeast 2 feet at
10 seconds. Scattered showers.
.THURSDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas around 4 feet. Wave Detail: East 4 feet at 6 seconds and
northeast 2 feet at 10 seconds. Scattered showers.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Seas 3 to 4 feet.
Wave Detail: East 4 feet at 6 seconds and east 3 feet at 14 seconds.
Scattered showers.
.FRIDAY...Southwest winds 5 to 10 knots. Seas 5 to 7 feet. Scattered
showers.
.FRIDAY NIGHT...South winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. Seas 5 to 7 feet. Scattered showers.
.SATURDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet.
Numerous showers, mainly in the morning.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 5 feet.
Numerous showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ726-072215-
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John-
543 AM AST Tue Oct 7 2025

.TODAY...East winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail:
East 2 feet at 6 seconds and northeast 2 feet at 13 seconds.
Isolated thunderstorms. Numerous showers until late afternoon, then
scattered showers late.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 4 feet. Wave
Detail: Southeast 2 feet at 6 seconds and northeast 2 feet at
12 seconds. Scattered showers.
.WEDNESDAY...Southeast winds 5 to 10 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
6 seconds and northeast 1 foot at 11 seconds. Scattered showers.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet. Wave
Detail: Southeast 2 feet at 6 seconds. Scattered showers.
.THURSDAY...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.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: East 3 feet at 6 seconds. Scattered showers.
.FRIDAY...North winds 5 to 10 knots, becoming south in the
afternoon. Seas 2 to 3 feet, building to 3 to 5 feet in the
afternoon. Scattered showers.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 3 to 5 feet.
Scattered showers.
.SATURDAY...South winds 10 to 15 knots. Seas 3 to 5 feet. Scattered
showers.
.SATURDAY NIGHT...Southeast winds around 10 knots. Seas 3 to 4 feet.
Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ733-072215-
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix-
543 AM AST Tue Oct 7 2025

.TODAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
East 3 feet at 5 seconds and northeast 1 foot at 13 seconds.
Isolated thunderstorms. Numerous showers until late afternoon, then
scattered showers late.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 6 seconds and northeast 1 foot at 13 seconds.
Scattered showers.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 6 seconds and northeast 1 foot at 12 seconds.
Scattered showers in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 6 seconds and northeast 1 foot at 11 seconds.
Scattered showers.
.THURSDAY...East winds 10 to 15 knots, diminishing to 5 to 10 knots
in the afternoon. Seas 2 to 3 feet. Wave Detail: East 3 feet at
6 seconds and northeast 1 foot at 10 seconds. Scattered showers.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet. Wave
Detail: East 3 feet at 6 seconds. Scattered showers.
.FRIDAY...Southeast winds around 5 knots. Seas 2 to 3 feet.
Scattered showers in the afternoon.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet.
Scattered showers.
.SATURDAY...Southeast winds 5 to 10 knots, increasing to 10 to
15 knots in the afternoon. Seas 3 to 4 feet. Scattered showers.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet.
Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ735-072215-
Coastal Waters of Southern Puerto Rico out 10 NM-
543 AM AST Tue Oct 7 2025

.TODAY...East winds around 5 knots. Seas around 2 feet. Wave Detail:
East 2 feet at 5 seconds. Scattered showers with isolated
thunderstorms.
.TONIGHT...East winds around 5 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 5 seconds. Scattered showers.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 4 seconds. Scattered showers.
.THURSDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
East 2 feet at 5 seconds. Scattered showers in the afternoon.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.FRIDAY...East winds around 5 knots, becoming southeast around
5 knots in the afternoon. Seas around 2 feet. Scattered showers in
the afternoon.
.FRIDAY NIGHT...Southeast winds around 5 knots. Seas 2 to 3 feet.
.SATURDAY...Southeast winds around 5 knots. Seas 2 to 4 feet.
Scattered showers in the afternoon.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Scattered showers.

Winds and seas higher in and near thunderstorms.

$$

AMZ741-072215-
Mona Passage Southward to 17N-
543 AM AST Tue Oct 7 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 AM AST EARLY THIS
MORNING...
...SMALL CRAFT SHOULD EXERCISE CAUTION AFTER 6 AM AST EARLY THIS
MORNING...

.TODAY...East winds 5 to 10 knots, diminishing to around 5 knots
late. Seas 4 to 6 feet. Wave Detail: Northeast 6 feet at 13 seconds
and east 2 feet at 5 seconds. Numerous showers this morning.
Isolated thunderstorms until late afternoon. Scattered showers this
afternoon.
.TONIGHT...East winds 5 to 10 knots. Seas 3 to 5 feet. Wave Detail:
North 5 feet at 13 seconds and east 2 feet at 5 seconds.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 3 to 4 feet. Wave
Detail: North 4 feet at 12 seconds and east 2 feet at 5 seconds.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet. Wave
Detail: North 3 feet at 11 seconds and southeast 2 feet at
4 seconds. Scattered showers after midnight.
.THURSDAY...East winds 5 to 10 knots. Seas around 3 feet. Wave
Detail: North 3 feet at 9 seconds and east 2 feet at 5 seconds.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet. Wave
Detail: East 3 feet at 6 seconds and north 2 feet at 9 seconds.
.FRIDAY...Southeast winds around 5 knots. Seas around 3 feet.
.FRIDAY NIGHT...Southeast winds around 5 knots. Seas around 3 feet.
Scattered showers.
.SATURDAY...Southeast winds around 5 knots. Seas around 3 feet.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ742-072215-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
543 AM AST Tue Oct 7 2025

.TODAY...East winds 5 to 10 knots, becoming northeast late this
morning and afternoon. Seas 3 to 5 feet. Wave Detail: Northeast
5 feet at 13 seconds. Isolated showers this morning, then showers
with isolated thunderstorms this afternoon.
.TONIGHT...East winds around 5 knots. Seas 3 to 5 feet. Wave Detail:
Northeast 5 feet at 13 seconds. Scattered showers in the evening.
.WEDNESDAY...Southeast winds 5 to 10 knots, becoming south 10 to
15 knots with gusts up to 20 knots in the afternoon. Seas 2 to
4 feet. Wave Detail: Northeast 4 feet at 12 seconds and south 2 feet
at 3 seconds. Scattered showers in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet. Wave
Detail: North 4 feet at 11 seconds and southeast 3 feet at
4 seconds.
.THURSDAY...East winds around 5 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds and northeast 3 feet at
9 seconds. Numerous showers in the afternoon.
.THURSDAY NIGHT...East winds around 5 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 4 seconds and north 3 feet at 9 seconds.
.FRIDAY...Southeast winds around 5 knots, becoming south around
5 knots in the afternoon. Seas 2 to 3 feet.
.FRIDAY NIGHT...Southeast winds around 5 knots. Seas 2 to 3 feet.
.SATURDAY...South winds 5 to 10 knots. Seas 2 to 3 feet.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ745-072215-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
543 AM AST Tue Oct 7 2025

.TODAY...East winds around 5 knots. Seas 2 to 3 feet. Wave Detail:
Northwest 3 feet at 13 seconds. Scattered showers late this morning.
Scattered showers with isolated thunderstorms this afternoon.
.TONIGHT...East winds around 5 knots, increasing to 5 to 10 knots
after midnight. Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at
13 seconds.
.WEDNESDAY...Southeast 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: Southeast 2 feet at 3 seconds and northwest
2 feet at 12 seconds.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 3 seconds and northwest 1 foot at
11 seconds.
.THURSDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 1 foot at 4 seconds and north 1 foot at 9 seconds.
Numerous showers in the afternoon.
.THURSDAY NIGHT...East winds around 5 knots. Seas around 2 feet.
Wave Detail: Southeast 1 foot at 5 seconds and north 1 foot at
9 seconds.
.FRIDAY...Southeast winds around 5 knots. Seas around 2 feet.
Scattered showers in the afternoon.
.FRIDAY NIGHT...Southeast winds around 5 knots. Seas around 2 feet.
.SATURDAY...Southeast winds around 5 knots, increasing to 5 to
10 knots in the afternoon. Seas around 2 feet.
.SATURDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet.

Winds and seas higher in and near thunderstorms.

$$