894
FZCA52 TJSJ 300803
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
403 AM AST Tue Sep 30 2025

Puerto Rico and the U.S. Virgin Islands Waters

AMZ700-302030-
403 AM AST Tue Sep 30 2025

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
Moderate southeasterly to easterly winds will continue for the next
few days, becoming gentle by Thursday. A large northerly swell will
promote hazardous marine conditions for small craft by late Thursday
night through the upcoming weekend.

$$

AMZ711-302030-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
403 AM AST Tue Sep 30 2025

.TODAY...Southeast winds 10 to 15 knots with gusts up to 25 knots.
Seas around 4 feet. Wave Detail: East 4 feet at 6 seconds and north
3 feet at 10 seconds. Scattered showers, mainly this morning.
.TONIGHT...Southeast winds 10 to 15 knots with gusts up to 25 knots.
Seas 3 to 4 feet. Wave Detail: East 4 feet at 6 seconds and north
2 feet at 10 seconds. Scattered showers after midnight.
.WEDNESDAY...Southeast winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. Seas 3 to 4 feet. Wave Detail: Southeast
3 feet at 6 seconds and north 2 feet at 10 seconds. Scattered
showers.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 6 seconds and north 1 foot at
9 seconds. Scattered showers in the evening.
.THURSDAY...South winds around 5 knots. Seas 2 to 3 feet. Wave
Detail: Northwest 3 feet at 11 seconds and east 2 feet at 8 seconds.
.THURSDAY NIGHT...Northeast winds around 5 knots. Seas 3 to 5 feet.
Wave Detail: Northwest 5 feet at 14 seconds and east 2 feet at
8 seconds. Scattered showers.
.FRIDAY...Northeast winds around 5 knots. Seas 5 to 7 feet, building
to 7 to 9 feet in the afternoon.
.FRIDAY NIGHT...Northeast winds around 5 knots. Seas 8 to 10 feet.
.SATURDAY...East winds 5 to 10 knots. Seas 8 to 9 feet.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 8 to 10 feet.
Scattered showers.

$$

AMZ712-302030-
Coastal Waters of Northern Puerto Rico out 10 NM-
403 AM AST Tue Sep 30 2025

.TODAY...Southeast winds 5 to 10 knots, becoming east 10 to 15 knots
with gusts up to 20 knots late this morning and afternoon. Seas 3 to
4 feet. Wave Detail: East 3 feet at 6 seconds and north 3 feet at
10 seconds. Isolated showers early this morning. Isolated showers
this afternoon.
.TONIGHT...Southeast 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: East 3 feet at 5 seconds and north 2 feet at 10 seconds.
Scattered showers.
.WEDNESDAY...Southeast winds 5 to 10 knots, becoming east in the
afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at 6 seconds
and north 2 feet at 10 seconds. Scattered showers in the morning.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
after midnight. Seas around 2 feet. Wave Detail: East 2 feet at
6 seconds and north 1 foot at 9 seconds.
.THURSDAY...Southeast winds around 5 knots, becoming northeast in
the afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at
6 seconds and northwest 2 feet at 11 seconds.
.THURSDAY NIGHT...Northeast winds around 5 knots. Seas 3 to 4 feet.
Wave Detail: Northwest 4 feet at 11 seconds and east 2 feet at
7 seconds. Scattered showers.
.FRIDAY...East winds around 5 knots, becoming northeast in the
afternoon. Seas 5 to 7 feet. Scattered showers.
.FRIDAY NIGHT...East winds around 5 knots. Seas 7 to 9 feet.
.SATURDAY...East winds around 5 knots, becoming northeast in the
afternoon. Seas 8 to 9 feet. Scattered showers.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 8 to 9 feet.

$$

AMZ716-302030-
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM-
403 AM AST Tue Sep 30 2025

.TODAY...Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. Wave Detail: East 3 feet at 4 seconds and north
3 feet at 10 seconds. Isolated showers.
.TONIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 5 seconds and
north 3 feet at 10 seconds. Scattered showers in the evening, then
numerous showers after midnight.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 5 seconds and northwest 2 feet at
10 seconds. Numerous showers, mainly in the morning.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds and northeast
1 foot at 9 seconds.
.THURSDAY...Southeast winds around 5 knots. Seas around 2 feet. Wave
Detail: Northeast 2 feet at 8 seconds and northwest 1 foot at
9 seconds. Scattered showers in the afternoon.
.THURSDAY NIGHT...Northeast winds around 5 knots. Seas 2 to 3 feet.
Wave Detail: Northwest 2 feet at 12 seconds and northeast 1 foot at
7 seconds. Scattered showers.
.FRIDAY...East winds around 5 knots. Seas 2 to 3 feet, building to
3 to 5 feet in the afternoon. Scattered showers in the morning.
.FRIDAY NIGHT...East winds around 5 knots. Seas 6 to 9 feet.
Scattered showers.
.SATURDAY...East winds 5 to 10 knots. Seas 6 to 9 feet. Scattered
showers.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 6 to 8 feet.
Scattered showers.

$$

AMZ723-302030-
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N-
403 AM AST Tue Sep 30 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 6 seconds and north 1 foot
at 10 seconds. Scattered showers, mainly this morning.
.TONIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas around 3 feet. Wave Detail: Southeast 3 feet at 5 seconds and
north 1 foot at 10 seconds. Scattered showers.
.WEDNESDAY...Southeast winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots in the afternoon. Seas around
3 feet. Wave Detail: Southeast 3 feet at 5 seconds and northeast
1 foot at 10 seconds. Scattered showers in the morning.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 6 seconds and northeast 1 foot at
9 seconds. Scattered showers.
.THURSDAY...Southeast winds around 5 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 6 seconds and northeast 1 foot at 9 seconds.
Scattered showers in the morning.
.THURSDAY NIGHT...East winds around 5 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 6 seconds and northeast 1 foot at
9 seconds.
.FRIDAY...East winds around 5 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 5 feet.
.SATURDAY...East winds 5 to 10 knots. Seas 4 to 6 feet. Scattered
showers.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 5 to 8 feet.
Scattered showers.

$$

AMZ726-302030-
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John-
403 AM AST Tue Sep 30 2025

.TODAY...Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. Wave Detail: East 3 feet at 6 seconds. Isolated
showers until late afternoon, then scattered showers late.
.TONIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas around 3 feet. Wave Detail: Southeast 3 feet at 5 seconds.
Scattered showers in the evening, then numerous showers after
midnight.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds. Numerous showers, mainly in
the morning.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots, diminishing to
around 5 knots after midnight. Seas around 2 feet. Wave Detail: East
2 feet at 6 seconds.
.THURSDAY...Southeast winds around 5 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 6 seconds. Scattered showers in the
afternoon.
.THURSDAY NIGHT...Northeast winds around 5 knots. Seas around
2 feet. Wave Detail: East 2 feet at 6 seconds. Scattered showers.
.FRIDAY...East winds around 5 knots. Seas around 2 feet. Scattered
showers in the morning.
.FRIDAY NIGHT...East winds around 5 knots. Seas 3 to 5 feet.
Scattered showers.
.SATURDAY...East winds 5 to 10 knots. Seas 3 to 5 feet. Scattered
showers.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 5 feet.
Scattered showers.

$$

AMZ733-302030-
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix-
403 AM AST Tue Sep 30 2025

.TODAY...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 10 seconds. Scattered showers early this
morning, then isolated showers late this morning and afternoon.
.TONIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas around 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds.
.WEDNESDAY NIGHT...East winds around 5 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds. Scattered showers.
.THURSDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds. Scattered showers in the
morning.
.THURSDAY NIGHT...Northeast winds around 5 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 6 seconds.
.FRIDAY...East winds around 5 knots. Seas around 2 feet.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.SATURDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered
showers in the morning.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet.

$$

AMZ735-302030-
Coastal Waters of Southern Puerto Rico out 10 NM-
403 AM AST Tue Sep 30 2025

.TODAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. Isolated
showers early this morning. Isolated showers this afternoon.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 6 seconds. Scattered showers.
.WEDNESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds.
.WEDNESDAY NIGHT...East winds around 5 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 6 seconds.
.THURSDAY...East winds around 5 knots, becoming south in the
afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at
5 seconds.
.THURSDAY NIGHT...Northeast winds around 5 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds. Scattered
showers.
.FRIDAY...East winds 5 to 10 knots. Seas around 2 feet.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas around 2 feet.
.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.

$$

AMZ741-302030-
Mona Passage Southward to 17N-
403 AM AST Tue Sep 30 2025

.TODAY...Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 4 to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds and
north 4 feet at 11 seconds. Isolated showers early this morning.
Scattered showers late this morning, then isolated showers this
afternoon.
.TONIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 4 feet at 6 seconds and north 2 feet at
10 seconds.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 6 seconds and north 2 feet at
10 seconds.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
3 feet. Wave Detail: Southeast 3 feet at 6 seconds and north 1 foot
at 10 seconds.
.THURSDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds and north 2 feet at
11 seconds. Scattered showers in the morning.
.THURSDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: North 3 feet at 12 seconds and southeast 2 feet at
6 seconds.
.FRIDAY...Northeast winds 5 to 10 knots. Seas 4 to 6 feet.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas 5 to 7 feet.
Scattered showers.
.SATURDAY...East winds 5 to 10 knots. Seas 5 to 7 feet.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 5 to 8 feet.

$$

AMZ742-302030-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
403 AM AST Tue Sep 30 2025

.TODAY...East winds 5 to 10 knots, becoming southeast late this
morning, then becoming east this afternoon. Seas 2 to 4 feet. Wave
Detail: North 4 feet at 11 seconds and south 2 feet at 6 seconds.
Numerous showers with isolated thunderstorms early this afternoon.
Scattered showers with isolated thunderstorms late.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 6 seconds and north 2 feet at 10 seconds.
.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
3 feet. Wave Detail: South 3 feet at 6 seconds and north 2 feet at
10 seconds.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: South 2 feet at 5 seconds and north 1 foot at
10 seconds.
.THURSDAY...Southeast winds around 5 knots, becoming west in the
afternoon. Seas around 2 feet. Wave Detail: Northwest 2 feet at
11 seconds and south 1 foot at 6 seconds.
.THURSDAY NIGHT...Northeast winds around 5 knots. Seas 2 to 3 feet.
Wave Detail: Northwest 3 feet at 11 seconds and south 1 foot at
5 seconds.
.FRIDAY...Northeast winds 5 to 10 knots, becoming north in the
afternoon. Seas 3 to 4 feet, building to 4 to 6 feet in the
afternoon.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas 5 to 7 feet.
.SATURDAY...Northeast winds around 5 knots. Seas 5 to 7 feet.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas 5 to 7 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ745-302030-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
403 AM AST Tue Sep 30 2025

.TODAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Wave
Detail: Southeast 3 feet at 6 seconds and northwest 2 feet at
11 seconds. Isolated showers.
.TONIGHT...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Wave
Detail: Southeast 3 feet at 6 seconds and northwest 2 feet at
11 seconds.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds and northwest 2 feet at
10 seconds.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 6 seconds and northwest 1 foot at
10 seconds.
.THURSDAY...Southeast winds around 5 knots, becoming south around
5 knots in the afternoon. Seas around 2 feet. Wave Detail: South
2 feet at 6 seconds and northwest 1 foot at 9 seconds.
.THURSDAY NIGHT...Northeast winds around 5 knots. Seas 2 to 3 feet.
Wave Detail: Northwest 2 feet at 11 seconds and south 1 foot at
5 seconds.
.FRIDAY...Northeast winds around 5 knots, becoming west in the
afternoon. Seas 2 to 4 feet.
.FRIDAY NIGHT...Northeast winds 5 to 10 knots. Seas 4 to 6 feet.
.SATURDAY...Southeast winds around 5 knots. Seas 5 to 7 feet.
.SATURDAY NIGHT...East winds around 5 knots. Seas 4 to 6 feet.

$$