667
FZCA52 TJSJ 082017
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
417 PM AST Mon Dec 8 2025

Puerto Rico and the U.S. Virgin Islands Waters

AMZ700-090930-
417 PM AST Mon Dec 8 2025

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
A broad surface high pressure over the Central Atlantic will promote
east to southeast moderate to locally fresh winds today, weakening
and becoming moderate tonight. By midweek, strengthening surface
high pressure north of the region will tighten the pressure gradient
and increase winds, allowing seas to build across the Atlantic waters
and exposed passages. Additionally, a long-period northerly swell
arriving late Thursday night will further worsen conditions. Choppy
to rough seas are expected, with Small Craft Advisories likely by the
end of the workweek. A gradual improvement remains possible by the
weekend as winds and swell ease.

$$

AMZ711-090930-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
417 PM AST Mon Dec 8 2025

.TONIGHT...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave
Detail: East 5 feet at 9 seconds and north 2 feet at 9 seconds.
Isolated showers.
.TUESDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas around 4 feet. Wave Detail: East 4 feet at 9 seconds and north
2 feet at 13 seconds. Scattered showers in the morning.
.TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas around 4 feet. Wave Detail: East 4 feet at 9 seconds
and north 2 feet at 15 seconds. Scattered showers after midnight.
.WEDNESDAY...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 and north
2 feet at 14 seconds.
.WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to
25 knots. Seas 4 to 6 feet. Wave Detail: East 5 feet at 8 seconds
and southeast 4 feet at 5 seconds.
.THURSDAY...East winds 15 to 20 knots, diminishing to 10 to 15 knots
in the afternoon. Seas 5 to 6 feet. Wave Detail: East 5 feet at
8 seconds and east 4 feet at 6 seconds.
.THURSDAY NIGHT...East winds 10 to 15 knots with gusts up to
25 knots. Seas 6 to 7 feet.
.FRIDAY...East winds 15 to 20 knots. Seas 6 to 7 feet.
.FRIDAY NIGHT...East winds 15 to 20 knots. Seas 6 to 7 feet.
.SATURDAY...East winds 15 to 20 knots. Seas 6 to 7 feet. Scattered
showers in the morning.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 6 to 7 feet.
Scattered showers.

$$

AMZ712-090930-
Coastal Waters of Northern Puerto Rico out 10 NM-
417 PM AST Mon Dec 8 2025

.TONIGHT...Southeast winds 5 to 10 knots, diminishing to around
5 knots late. Seas 4 to 5 feet. Wave Detail: Northeast 4 feet at
9 seconds and north 2 feet at 9 seconds. Isolated showers until
early morning, then scattered showers late.
.TUESDAY...Southeast winds 5 to 10 knots, becoming east 10 to
15 knots with gusts up to 20 knots in the afternoon. Seas 3 to
4 feet. Wave Detail: East 3 feet at 9 seconds and north 1 foot at
9 seconds. Scattered showers in the morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 3 to 4 feet.
Wave Detail: East 3 feet at 9 seconds and north 1 foot at 8 seconds.
.WEDNESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots
with gusts up to 25 knots in the afternoon. Seas 3 to 4 feet. Wave
Detail: East 3 feet at 9 seconds and north 2 feet at 14 seconds.
.WEDNESDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 4 to 5 feet. Wave Detail: East 3 feet
at 5 seconds and east 3 feet at 8 seconds.
.THURSDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 4 to 5 feet. Wave Detail: East 4 feet at 6 seconds and north
3 feet at 13 seconds. Scattered showers in the afternoon.
.THURSDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 5 to 6 feet.
.FRIDAY...East winds 10 to 15 knots. Seas around 6 feet.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 5 to 6 feet.
.SATURDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. Seas 5 to 6 feet.
.SATURDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 5 to 6 feet. Scattered showers.

$$

AMZ716-090930-
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM-
417 PM AST Mon Dec 8 2025

.TONIGHT...East 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 east
3 feet at 9 seconds. Isolated showers until early morning, then
scattered showers late.
.TUESDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 4 seconds and
east 3 feet at 9 seconds. Scattered showers in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet. Wave
Detail: Southeast 3 feet at 5 seconds and east 2 feet at 8 seconds.
Scattered showers after midnight.
.WEDNESDAY...East winds 10 to 15 knots with gusts up to 25 knots.
Seas 2 to 4 feet. Wave Detail: East 3 feet at 4 seconds and east
2 feet at 8 seconds. Scattered showers.
.WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to
25 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 5 seconds
and northeast 2 feet at 13 seconds.
.THURSDAY...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 3 to 5 feet. Wave Detail: East 4 feet at 5 seconds and north
2 feet at 13 seconds. Scattered showers.
.THURSDAY NIGHT...East winds around 15 knots with gusts up to
25 knots. Seas 4 to 6 feet.
.FRIDAY...East winds around 15 knots. Seas 5 to 7 feet.
.FRIDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet.
.SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered
showers.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet.
Scattered showers.

$$

AMZ723-090930-
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N-
417 PM AST Mon Dec 8 2025

.TONIGHT...East winds around 15 knots with gusts up to 25 knots.
Seas 4 to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds and
east 3 feet at 9 seconds. Isolated showers early this evening, then
scattered showers late this evening and overnight.
.TUESDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas
4 to 5 feet. Wave Detail: East 4 feet at 7 seconds and north 2 feet
at 13 seconds.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas around 4 feet. Wave
Detail: East 4 feet at 7 seconds and north 1 foot at 13 seconds.
Scattered showers after midnight.
.WEDNESDAY...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 3 to 5 feet. Wave Detail: East 5 feet at 7 seconds and north
2 feet at 14 seconds. Scattered showers.
.WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to
25 knots. Seas 5 to 6 feet. Wave Detail: East 5 feet at 7 seconds
and north 2 feet at 13 seconds.
.THURSDAY...East winds 15 to 20 knots with gusts up to 25 knots.
Seas around 5 feet. Wave Detail: East 5 feet at 6 seconds and north
2 feet at 13 seconds.
.THURSDAY NIGHT...East winds 15 to 20 knots with gusts up to
25 knots. Seas 5 to 6 feet.
.FRIDAY...East winds 15 to 20 knots. Seas 6 to 7 feet.
.FRIDAY NIGHT...East winds 15 to 20 knots. Seas 6 to 7 feet.
.SATURDAY...East winds around 20 knots. Seas 6 to 7 feet. Scattered
showers in the afternoon.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas around 6 feet.
Scattered showers.

$$

AMZ726-090930-
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John-
417 PM AST Mon Dec 8 2025

.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas
3 to 4 feet. Wave Detail: Southeast 4 feet at 6 seconds. Isolated
showers early this evening, then scattered showers late this evening
and overnight.
.TUESDAY...Southeast 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 in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet. Wave
Detail: East 3 feet at 7 seconds. Scattered showers after midnight.
.WEDNESDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. Seas 3 to 4 feet. Wave Detail: East 3 feet at
7 seconds. Scattered showers.
.WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to
25 knots. Seas 3 to 5 feet. Wave Detail: East 4 feet at 5 seconds
and east 2 feet at 8 seconds. Scattered showers.
.THURSDAY...East winds 15 to 20 knots, diminishing to 10 to 15 knots
in the afternoon. Seas around 4 feet. Wave Detail: East 4 feet at
6 seconds. Scattered showers.
.THURSDAY NIGHT...East winds around 15 knots with gusts up to
25 knots. Seas 4 to 5 feet.
.FRIDAY...East winds 15 to 20 knots. Seas 4 to 6 feet.
.FRIDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet.
.SATURDAY...East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered
showers.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet.
Scattered showers.

$$

AMZ733-090930-
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix-
417 PM AST Mon Dec 8 2025

.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 4 feet. Wave Detail: East 4 feet at 7 seconds and east 2 feet
at 9 seconds. Scattered showers.
.TUESDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas
around 4 feet. Wave Detail: Southeast 4 feet at 6 seconds and east
3 feet at 9 seconds. Numerous showers in the morning.
.TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas around 4 feet. Wave Detail: Southeast 4 feet at
6 seconds and east 2 feet at 9 seconds.
.WEDNESDAY...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.
.WEDNESDAY NIGHT...East winds 15 to 20 knots with gusts up to
25 knots. Seas 4 to 5 feet. Wave Detail: East 4 feet at 7 seconds.
.THURSDAY...East winds 15 to 20 knots with gusts up to 25 knots.
Seas 4 to 5 feet. Wave Detail: East 4 feet at 7 seconds.
.THURSDAY NIGHT...East winds 15 to 20 knots with gusts up to
25 knots. Seas 4 to 5 feet.
.FRIDAY...East winds 15 to 20 knots. Seas 5 to 6 feet.
.FRIDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 6 feet.
.SATURDAY...East winds 15 to 20 knots. Seas 5 to 6 feet.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 6 feet.
Scattered showers.

$$

AMZ735-090930-
Coastal Waters of Southern Puerto Rico out 10 NM-
417 PM AST Mon Dec 8 2025

.TONIGHT...East winds 5 to 10 knots. Seas 3 to 4 feet. Wave Detail:
Southeast 4 feet at 7 seconds. Isolated showers until early morning,
then scattered showers late.
.TUESDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
3 to 4 feet. Wave Detail: Southeast 3 feet at 7 seconds. Scattered
showers in the morning.
.TUESDAY NIGHT...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.
.WEDNESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots
with gusts up to 20 knots in the afternoon. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 7 seconds.
.WEDNESDAY NIGHT...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.
.THURSDAY...East winds 15 to 20 knots, diminishing to 10 to 15 knots
in the afternoon. Seas 3 to 4 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.
.FRIDAY...East winds 15 to 20 knots. Seas 3 to 5 feet.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet.
.SATURDAY...East winds 15 to 20 knots. Seas 3 to 5 feet.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet.

$$

AMZ741-090930-
Mona Passage Southward to 17N-
417 PM AST Mon Dec 8 2025

.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots late. Seas 4 to 5 feet. Wave Detail:
East 4 feet at 7 seconds and north 2 feet at 11 seconds. Isolated
showers after midnight. Scattered showers late.
.TUESDAY...East winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail:
Southeast 4 feet at 7 seconds and northeast 2 feet at 9 seconds.
Numerous showers in the afternoon.
.TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 5 feet. Wave Detail: Southeast 4 feet at
7 seconds and northeast 2 feet at 9 seconds.
.WEDNESDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 5 feet. Wave Detail: East 4 feet at 7 seconds and north
1 foot at 8 seconds.
.WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to
25 knots. Seas 3 to 5 feet. Wave Detail: East 5 feet at 7 seconds
and north 2 feet at 13 seconds. Scattered showers.
.THURSDAY...East winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. Seas 4 to 5 feet. Wave Detail: East 5 feet at
6 seconds and north 2 feet at 13 seconds.
.THURSDAY NIGHT...East winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 5 to 6 feet.
.FRIDAY...East winds 15 to 20 knots. Seas 5 to 6 feet.
.FRIDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 7 feet.
.SATURDAY...East winds 15 to 20 knots. Seas 5 to 7 feet.
.SATURDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 6 feet.

$$

AMZ742-090930-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
417 PM AST Mon Dec 8 2025

.TONIGHT...East winds around 5 knots. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 5 seconds and north 2 feet at 10 seconds.
.TUESDAY...East winds around 5 knots. Seas 2 to 3 feet. Wave Detail:
North 2 feet at 12 seconds and south 1 foot at 7 seconds. Scattered
showers in the afternoon.
.TUESDAY NIGHT...East winds around 5 knots, increasing to 5 to
10 knots after midnight. Seas 2 to 3 feet. Wave Detail: South 1 foot
at 7 seconds and northeast 1 foot at 8 seconds.
.WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 5 seconds and north 1 foot at 8 seconds.
Scattered showers in the afternoon.
.WEDNESDAY NIGHT...East winds around 5 knots, increasing to 5 to
10 knots after midnight. Seas 2 to 3 feet. Wave Detail: Northeast
2 feet at 7 seconds and north 2 feet at 13 seconds.
.THURSDAY...East winds 5 to 10 knots. Seas 2 to 4 feet. Wave Detail:
East 2 feet at 6 seconds and north 2 feet at 13 seconds. Scattered
showers in the afternoon.
.THURSDAY NIGHT...East winds around 5 knots, increasing to 5 to
10 knots with gusts up to 20 knots after midnight. Seas 3 to 5 feet.
.FRIDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in
the afternoon. Seas 3 to 5 feet. Scattered showers in the afternoon.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 5 feet.
.SATURDAY...East winds 10 to 15 knots, diminishing to 5 to 10 knots
in the afternoon. Seas 3 to 5 feet. Scattered showers in the
afternoon.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet.

$$

AMZ745-090930-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
417 PM AST Mon Dec 8 2025

.TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 6 seconds and northwest 2 feet at 12 seconds.
.TUESDAY...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 7 seconds and northwest
1 foot at 10 seconds.
.TUESDAY NIGHT...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 and northwest 1 foot at 10 seconds.
.WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 5 seconds and north 1 foot at 10 seconds.
Scattered showers in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 7 seconds and north 1 foot at 9 seconds.
.THURSDAY...East winds 10 to 15 knots with gusts up to 25 knots.
Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds and
northwest 1 foot at 10 seconds. Scattered showers in the afternoon.
.THURSDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to
4 feet.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 4 feet. Scattered
showers in the afternoon.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet.
.SATURDAY...East winds 5 to 10 knots, becoming southeast 15 to
20 knots in the afternoon. Seas 2 to 4 feet. Scattered showers in
the afternoon.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet.

$$