513
FZCA52 TJSJ 312005
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
405 PM AST Sun Aug 31 2025

Puerto Rico and the U.S. Virgin Islands Waters

AMZ700-010915-
405 PM AST Sun Aug 31 2025

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...
A tropical wave moving away into the central Caribbean, a surface
high pressure across the Central Atlantic, and a frontal boundary
across the western Atlantic will promote an east-southeast moderate
wind flow across the islands through at least the middle of the week.
Afternoon thunderstorms will develop each day across the western
coastal waters of Puerto Rico and downwind from the US Virgin
Islands.

$$

AMZ711-010915-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
405 PM AST Sun Aug 31 2025

.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas
2 to 3 feet. Wave Detail: East 3 feet at 7 seconds. Scattered
showers.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 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 2 to 3 feet. Wave Detail: East 3 feet at 6 seconds. Scattered
showers.
.TUESDAY...East winds 10 to 15 knots with gusts up to 25 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
25 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 6 seconds.
.WEDNESDAY...East winds 10 to 15 knots with gusts up to 25 knots.
Seas 3 to 4 feet. Wave Detail: East 3 feet at 7 seconds and north
1 foot at 9 seconds.
.WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to
25 knots. Seas 3 to 4 feet.
.THURSDAY...East winds 10 to 15 knots. Seas around 3 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet.
.FRIDAY...East winds 10 to 15 knots. Seas 3 to 4 feet.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet.

$$

AMZ712-010915-
Coastal Waters of Northern Puerto Rico out 10 NM-
405 PM AST Sun Aug 31 2025

.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots late this evening and overnight. Seas
2 to 3 feet. Wave Detail: East 3 feet at 5 seconds. Scattered
showers with isolated thunderstorms early this evening, then
isolated showers late this evening and early morning. Scattered
showers late.
.MONDAY...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: East 2 feet at 6 seconds.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 5 seconds. Scattered showers after
midnight.
.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 5 seconds. Scattered showers in the
afternoon.
.TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots, becoming southeast 5 to 10 knots after midnight. Seas 2 to
3 feet. Wave Detail: East 3 feet at 6 seconds.
.WEDNESDAY...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 7 seconds and north 1 foot at 9 seconds.
Scattered showers.
.WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots after midnight. Seas around
3 feet.
.THURSDAY...East winds 10 to 15 knots. Seas 3 to 4 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 3 to 4 feet.
.FRIDAY...East winds 10 to 15 knots. Seas around 3 feet. Scattered
showers in the afternoon.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ716-010915-
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM-
405 PM AST Sun Aug 31 2025

.TONIGHT...East winds around 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 6 seconds. Scattered showers.
.MONDAY...East winds around 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 6 seconds. Scattered showers in the morning.
.MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Seas around 2 feet. Wave Detail: East 2 feet at 4 seconds. Scattered
showers.
.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. Wave Detail: East 3 feet at 5 seconds.
.WEDNESDAY...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.
.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.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered
showers in the afternoon.
.FRIDAY NIGHT...East winds around 15 knots. Seas 2 to 3 feet.
Scattered showers.

$$

AMZ723-010915-
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N-
405 PM AST Sun Aug 31 2025

.TONIGHT...East winds around 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 5 seconds. Isolated showers this evening,
then scattered showers after midnight. Isolated showers late.
.MONDAY...East winds around 10 knots. Seas around 2 feet. Wave
Detail: East 2 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. Scattered
showers after midnight.
.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. Scattered
showers in the morning.
.TUESDAY 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.
.WEDNESDAY...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.
.WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 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.
.FRIDAY...East winds around 15 knots. Seas around 3 feet. Scattered
showers in the afternoon.
.FRIDAY NIGHT...East winds around 15 knots. Seas 3 to 4 feet.
Scattered showers.

$$

AMZ726-010915-
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John-
405 PM AST Sun Aug 31 2025

.TONIGHT...East winds around 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 5 seconds. Scattered showers.
.MONDAY...East winds around 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 5 seconds. Scattered showers in the morning.
.MONDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds. Scattered
showers after midnight.
.TUESDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
2 to 3 feet. Wave Detail: East 3 feet at 4 seconds.
.TUESDAY 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.
.WEDNESDAY...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.
.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.
Scattered showers.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered
showers in the afternoon.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Scattered showers.

$$

AMZ733-010915-
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix-
405 PM AST Sun Aug 31 2025

.TONIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail:
East 3 feet at 6 seconds. Isolated showers this evening, then
scattered showers after midnight.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail:
East 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 2 feet at 5 seconds. Scattered
showers after midnight.
.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. Wave Detail: East 3 feet at 5 seconds.
Scattered showers.
.WEDNESDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas around 3 feet. Wave Detail: East 3 feet at 6 seconds.
.WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 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.
.FRIDAY...East winds around 15 knots. Seas around 3 feet. Scattered
showers in the afternoon.
.FRIDAY NIGHT...East winds around 15 knots. Seas around 3 feet.
Scattered showers.

$$

AMZ735-010915-
Coastal Waters of Southern Puerto Rico out 10 NM-
405 PM AST Sun Aug 31 2025

.TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 5 seconds. Isolated showers this evening,
then scattered showers after midnight.
.MONDAY...East winds 5 to 10 knots with gusts up to 20 knots. Seas
around 2 feet. Wave Detail: East 2 feet at 5 seconds.
.MONDAY NIGHT...East winds around 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
around 2 feet. Wave Detail: East 2 feet at 5 seconds.
.TUESDAY NIGHT...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.
.WEDNESDAY...East winds 10 to 15 knots with gusts up to 25 knots.
Seas 2 to 3 feet. Wave Detail: East 3 feet at 5 seconds. Scattered
showers in the morning.
.WEDNESDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. 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.
.FRIDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.

$$

AMZ741-010915-
Mona Passage Southward to 17N-
405 PM AST Sun Aug 31 2025

.TONIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail:
East 3 feet at 6 seconds. Isolated showers this evening, then
scattered showers after midnight. Numerous showers late.
.MONDAY...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.
.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 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. Wave Detail: Southeast 3 feet at
6 seconds.
.WEDNESDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds and
north 1 foot at 9 seconds.
.WEDNESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 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.
.FRIDAY...East winds 10 to 15 knots. Seas 3 to 4 feet.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet.

$$

AMZ742-010915-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
405 PM AST Sun Aug 31 2025

.TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Northeast 2 feet at 6 seconds. Scattered showers with
isolated thunderstorms early this evening, then scattered showers
late this evening.
.MONDAY...East winds 5 to 10 knots, becoming northeast in the
afternoon. Seas around 2 feet. Wave Detail: Northeast 2 feet at
5 seconds. Numerous showers in the afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Northeast 1 foot at 5 seconds. Scattered showers in the
evening.
.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 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 6 seconds.
.WEDNESDAY...East winds around 5 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 6 seconds and north 1 foot at 9 seconds.
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.
.FRIDAY...East winds 5 to 10 knots, diminishing to around 5 knots in
the afternoon. Seas 2 to 3 feet. Scattered showers in the afternoon.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ745-010915-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
405 PM AST Sun Aug 31 2025

.TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 1 foot at 4 seconds. Scattered showers with
isolated thunderstorms early this evening, then isolated showers
late this evening.
.MONDAY...East winds 5 to 10 knots, becoming southeast 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.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 1 foot at 4 seconds.
.TUESDAY...East winds 5 to 10 knots, becoming southeast 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.
.TUESDAY NIGHT...East winds 5 to 10 knots with gusts up to 20 knots.
Seas around 2 feet. Wave Detail: Southeast 2 feet at 4 seconds.
.WEDNESDAY...East winds 5 to 10 knots, becoming southeast 10 to
15 knots with gusts up to 25 knots in the afternoon. Seas around
2 feet. Wave Detail: East 2 feet at 5 seconds. Scattered showers in
the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.THURSDAY...East winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. Seas around 2 feet. Scattered showers in
the afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.FRIDAY...East winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. Seas around 2 feet. Scattered showers in
the afternoon.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$