951
FZCA52 TJSJ 100817
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
417 AM AST Sun Aug 10 2025

Puerto Rico and the U.S. Virgin Islands Waters

AMZ700-102130-
417 AM AST Sun Aug 10 2025

.SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS...

Moderate to locally fresh easterly winds are expected over the next
few days, resulting in seas of around 2 to 4 feet. Afternoon
convection is expected to develop each day across the coastal waters
of western Puerto Rico and into the Mona Passage. Early next week,
the Invest 96L is forecast to move well northeast of the the region,
but trailing tropical moisture will bring periods of shower activity
across the regional waters. By Tuesday into mid week, a Saharan Air
Layer is expected to arrive, leading to reduced visibilities.
Additionally, the Invest 97L, monitored by the National Hurricane
Center, is forecast to also move well northeast of the region, but it
could trigger some marine hazards by the upcoming weekend.

$$

AMZ711-102130-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
417 AM AST Sun Aug 10 2025

.TODAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 4 feet. Wave Detail: East 4 feet at 8 seconds. Scattered
showers, mainly this morning.
.TONIGHT...East winds 10 to 15 knots with gusts up to 25 knots. Seas
4 to 5 feet. Wave Detail: East 4 feet at 5 seconds and northeast
4 feet at 10 seconds.
.MONDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas
around 4 feet. Wave Detail: Northeast 4 feet at 10 seconds and east
3 feet at 5 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 5 seconds and
northeast 3 feet at 9 seconds. Scattered showers after midnight.
.TUESDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas
around 4 feet. Wave Detail: East 3 feet at 6 seconds and northeast
3 feet at 9 seconds. Scattered showers.
.TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Seas around 4 feet. Wave Detail: Northeast 4 feet at
9 seconds and east 3 feet at 5 seconds. Scattered showers.
.WEDNESDAY...East winds around 10 knots. Seas 3 to 4 feet. Scattered
showers in the morning.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet.
.THURSDAY...East winds 10 to 15 knots. Seas 3 to 5 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 4 to 5 feet.

$$

AMZ712-102130-
Coastal Waters of Northern Puerto Rico out 10 NM-
417 AM AST Sun Aug 10 2025

.TODAY...East winds 5 to 10 knots, increasing to 10 to 15 knots with
gusts up to 25 knots this afternoon. Seas around 3 feet. Wave
Detail: Northeast 3 feet at 9 seconds. Scattered showers. Isolated
thunderstorms this afternoon.
.TONIGHT...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
5 seconds and northeast 3 feet at 9 seconds.
.MONDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas
around 4 feet. Wave Detail: Northeast 3 feet at 5 seconds and north
3 feet at 10 seconds. Scattered showers in the afternoon.
.MONDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Gusts up to 25 knots. Seas around 4 feet.
Wave Detail: East 4 feet at 5 seconds and north 3 feet at
10 seconds.
.TUESDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas
3 to 4 feet. Wave Detail: East 3 feet at 5 seconds and northeast
2 feet at 9 seconds. Scattered showers in the afternoon.
.TUESDAY NIGHT...East winds 10 to 15 knots with gusts up to
25 knots, diminishing to 5 to 10 knots after midnight. Seas 3 to
4 feet. Wave Detail: East 3 feet at 5 seconds and northeast 3 feet
at 9 seconds. Scattered showers after midnight.
.WEDNESDAY...East winds 5 to 10 knots, becoming northeast 10 to
15 knots in the afternoon. Seas 3 to 4 feet. Scattered showers in
the morning.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet.
.THURSDAY...East winds 10 to 15 knots. Seas 3 to 4 feet. Scattered
showers.
.THURSDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 3 to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ716-102130-
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM-
417 AM AST Sun Aug 10 2025

.TODAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail:
Northeast 3 feet at 9 seconds and southeast 2 feet at 4 seconds.
Scattered showers, mainly this morning.
.TONIGHT...East 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 northeast
3 feet at 9 seconds. Scattered showers after midnight.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
3 to 4 feet. Wave Detail: East 3 feet at 5 seconds and northeast
2 feet at 10 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 5 seconds and
northeast 2 feet at 10 seconds. Scattered showers after midnight.
.TUESDAY...East winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail:
East 3 feet at 5 seconds and northeast 2 feet at 9 seconds. Numerous
showers, mainly in the morning.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 3 feet at 9 seconds and east 2 feet at 5 seconds.
Scattered showers after midnight.
.WEDNESDAY...East winds around 10 knots. Seas 2 to 3 feet. Scattered
showers in the morning.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Scattered showers.
.THURSDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered
showers in the afternoon.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet.

$$

AMZ723-102130-
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N-
417 AM AST Sun Aug 10 2025

.TODAY...East winds around 10 knots, increasing to around 15 knots
with gusts up to 20 knots late. Seas around 3 feet. Wave Detail:
Southeast 3 feet at 5 seconds and northeast 2 feet at 9 seconds.
Scattered showers.
.TONIGHT...East 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 northeast
2 feet at 10 seconds. Scattered showers after midnight.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 4 feet. Wave Detail: East 3 feet at 5 seconds and northeast
2 feet at 10 seconds. Scattered showers in the afternoon.
.MONDAY NIGHT...East winds around 15 knots with gusts up to
20 knots. Seas around 4 feet. Wave Detail: East 3 feet at 5 seconds
and northeast 2 feet at 10 seconds. Scattered showers.
.TUESDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 4 feet. Wave Detail: East 3 feet at 5 seconds and northeast
3 feet at 9 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 3 feet at 5 seconds
and northeast 3 feet at 9 seconds.
.WEDNESDAY...East winds 10 to 15 knots. Seas 3 to 4 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet.
.THURSDAY...East winds around 15 knots. Seas around 4 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas around 4 feet.

$$

AMZ726-102130-
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John-
417 AM AST Sun Aug 10 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.
.TONIGHT...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 and northeast
2 feet at 8 seconds. Scattered showers after midnight.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 3 feet. Wave Detail: East 3 feet at 5 seconds and northeast
1 foot at 8 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 5 seconds and
northeast 1 foot at 8 seconds. Scattered showers after midnight.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail:
East 3 feet at 5 seconds and northeast 1 foot at 9 seconds. Numerous
showers, mainly in the morning.
.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
and northeast 2 feet at 9 seconds. Scattered showers after midnight.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered
showers in the morning.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Scattered showers.
.THURSDAY...East winds 10 to 15 knots. Seas 2 to 4 feet. Scattered
showers.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet.

$$

AMZ733-102130-
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix-
417 AM AST Sun Aug 10 2025

.TODAY...East winds 10 to 15 knots. Seas around 3 feet. Wave Detail:
East 2 feet at 7 seconds. Scattered showers until late afternoon,
then isolated showers late.
.TONIGHT...East winds around 15 knots with gusts up to 20 knots.
Seas around 3 feet. Wave Detail: East 3 feet at 5 seconds and east
2 feet at 8 seconds. Scattered showers after midnight.
.MONDAY...East winds 10 to 15 knots with gusts up to 25 knots. Seas
around 3 feet. Wave Detail: East 3 feet at 5 seconds and northeast
1 foot at 8 seconds. Scattered showers in the morning.
.MONDAY NIGHT...East winds around 15 knots with gusts up to
25 knots. Seas 3 to 4 feet. Wave Detail: East 3 feet at 5 seconds
and northeast 1 foot at 8 seconds. Scattered showers.
.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 and northeast
1 foot at 9 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 5 seconds
and northeast 1 foot at 9 seconds. Scattered showers after midnight.
.WEDNESDAY...East winds 10 to 15 knots. Seas around 3 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet.
.THURSDAY...East winds around 15 knots. Seas around 3 feet.
Scattered showers in the morning.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet.

$$

AMZ735-102130-
Coastal Waters of Southern Puerto Rico out 10 NM-
417 AM AST Sun Aug 10 2025

.TODAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 6 seconds. Isolated showers early this morning,
then scattered showers late this morning. Isolated showers this
afternoon.
.TONIGHT...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...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.
.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. Scattered
showers in the morning.
.TUESDAY NIGHT...East winds 10 to 15 knots, becoming northeast 5 to
10 knots after midnight. Seas 2 to 3 feet. Wave Detail: East 3 feet
at 5 seconds. Scattered showers after midnight.
.WEDNESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered
showers in the morning.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet.
.THURSDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered
showers in the afternoon.
.THURSDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 2 to 3 feet.

$$

AMZ741-102130-
Mona Passage Southward to 17N-
417 AM AST Sun Aug 10 2025

.TODAY...East winds 5 to 10 knots. Seas around 3 feet. Wave Detail:
Southeast 3 feet at 6 seconds and northeast 2 feet at 9 seconds.
Scattered showers, mainly this morning.
.TONIGHT...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 2 feet at 9 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: East 4 feet at 6 seconds and northeast
2 feet at 9 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 4 feet at 6 seconds and north
2 feet at 10 seconds.
.TUESDAY...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 2 feet
at 10 seconds.
.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
and north 2 feet at 10 seconds.
.WEDNESDAY...East winds 10 to 15 knots. Seas around 3 feet.
Scattered showers in the morning.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 knots, becoming east
10 to 15 knots after midnight. Seas around 3 feet.
.THURSDAY...East winds 10 to 15 knots. Seas around 3 feet. Scattered
showers in the morning.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet.
Scattered showers.

$$

AMZ742-102130-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
417 AM AST Sun Aug 10 2025

.TODAY...East winds around 5 knots, becoming northeast this
afternoon. Seas 2 to 3 feet. Wave Detail: Northeast 2 feet at
9 seconds and south 1 foot at 5 seconds. Isolated showers late this
morning. Scattered showers with isolated thunderstorms this
afternoon.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
North 2 feet at 9 seconds and south 1 foot at 4 seconds.
.MONDAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 5 seconds and north 2 feet at 10 seconds.
Numerous showers in the afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 4 feet. Wave
Detail: East 2 feet at 6 seconds and north 2 feet at 10 seconds.
Scattered showers in the evening.
.TUESDAY...East winds 5 to 10 knots, diminishing to around 5 knots
in the afternoon. Seas 2 to 3 feet. Wave Detail: East 2 feet at
6 seconds and north 2 feet at 10 seconds. Numerous showers in the
afternoon.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 6 seconds and northeast 2 feet at 9 seconds.
.WEDNESDAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet.
Scattered showers in the afternoon.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 2 to 3 feet.
.THURSDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Numerous
showers in the afternoon.
.THURSDAY 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.

$$

AMZ745-102130-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
417 AM AST Sun Aug 10 2025

.TODAY...East winds 5 to 10 knots, becoming southeast this
afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at
5 seconds and north 1 foot at 7 seconds. Scattered showers this
afternoon.
.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds and
northwest 1 foot at 9 seconds.
.MONDAY...East winds around 5 knots, increasing to 5 to 10 knots in
the afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at
5 seconds and north 1 foot at 9 seconds. Scattered showers in the
afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds and northwest 1 foot at
8 seconds. Scattered showers in the evening.
.TUESDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds and north 1 foot at 7 seconds.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds and north 1 foot at 7 seconds.
.WEDNESDAY...East winds 5 to 10 knots. Seas around 2 feet. Scattered
showers.
.WEDNESDAY NIGHT...East winds around 5 knots. Seas around 2 feet.
.THURSDAY...East winds 5 to 10 knots. Seas around 2 feet. Scattered
showers in the afternoon.
.THURSDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.

$$