568
FZCA52 TJSJ 202009
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
409 PM AST Thu Nov 20 2025

Puerto Rico and the U.S. Virgin Islands Waters

AMZ700-210915-
409 PM AST Thu Nov 20 2025

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

A fading long period north-northeasterly swell will continue to move
across the local waters through this evening. Afternoon thunderstorms
may move over the regional waters across the Mona Passage and
Caribbean waters at least through Friday. The remnants of the
frontal boundary will slowly dissipate across the western Atlantic
through Friday, when a surface high is expected to build over the
region. This high pressure will promote moderate to fresh trade
winds from the upcoming weekend into early next week.

$$

AMZ711-210915-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
409 PM AST Thu Nov 20 2025

.TONIGHT...Northeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 4 to 5 feet. Wave Detail: East 3 feet at 5 seconds and north
3 feet at 10 seconds. Scattered showers.
.FRIDAY...Northeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 4 to 5 feet. Wave Detail: Northeast 3 feet at 5 seconds and
north 3 feet at 9 seconds. Scattered showers in the morning.
.FRIDAY NIGHT...Northeast 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 2 feet at 9 seconds.
.SATURDAY...Northeast 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 north 2 feet at 8 seconds.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
20 knots. Seas around 3 feet. Wave Detail: East 3 feet at 5 seconds
and north 2 feet at 8 seconds. Scattered showers after midnight.
.SUNDAY...East winds around 10 knots. Seas around 3 feet. Wave
Detail: Northeast 3 feet at 6 seconds and northeast 1 foot at
11 seconds. Scattered showers in the morning.
.SUNDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Seas around 3 feet. Scattered showers.
.MONDAY...East winds 10 to 15 knots. Seas around 3 feet. Scattered
showers in the morning.
.MONDAY NIGHT...East winds around 15 knots. Seas 3 to 4 feet.
.TUESDAY...East winds 15 to 20 knots. Seas 4 to 5 feet. Scattered
showers in the afternoon.
.TUESDAY NIGHT...East winds 15 to 20 knots. Seas 5 to 6 feet.

$$

AMZ712-210915-
Coastal Waters of Northern Puerto Rico out 10 NM-
409 PM AST Thu Nov 20 2025

.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas
4 to 5 feet. Wave Detail: Northeast 3 feet at 5 seconds and north
3 feet at 11 seconds. Scattered showers.
.FRIDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 4 feet. Wave Detail: Northeast 3 feet at 5 seconds and north
2 feet at 10 seconds. Scattered showers in the afternoon.
.FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Seas around 4 feet. Wave Detail: Northeast 3 feet at 5 seconds and
north 2 feet at 9 seconds. Scattered showers.
.SATURDAY...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at 5 seconds and
north 2 feet at 8 seconds.
.SATURDAY NIGHT...East winds 5 to 10 knots. Seas around 3 feet. Wave
Detail: Northeast 2 feet at 5 seconds and north 2 feet at 8 seconds.
Scattered showers after midnight.
.SUNDAY...East winds 5 to 10 knots, becoming northeast 10 to
15 knots with gusts up to 20 knots in the afternoon. Seas 2 to
3 feet. Wave Detail: Northeast 2 feet at 6 seconds and northeast
1 foot at 11 seconds.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet.
Scattered showers.
.MONDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in
the afternoon. Seas 2 to 3 feet.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet.
Scattered showers.
.TUESDAY...East winds 10 to 15 knots. Seas 3 to 4 feet. Scattered
showers in the afternoon.
.TUESDAY NIGHT...East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 4 to 5 feet. Scattered showers.

$$

AMZ716-210915-
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM-
409 PM AST Thu Nov 20 2025

.TONIGHT...Northeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 4 to 5 feet. Wave Detail: Northeast 3 feet at 4 seconds and
north 3 feet at 11 seconds. Isolated showers this evening, then
scattered showers after midnight.
.FRIDAY...Northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Northeast 3 feet at 4 seconds and north 3 feet at
10 seconds.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at
4 seconds and north 2 feet at 9 seconds. Scattered showers.
.SATURDAY...Northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Northeast 3 feet at 5 seconds and north 2 feet at 9 seconds.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Northeast 2 feet at 4 seconds and north 2 feet at
8 seconds.
.SUNDAY...East winds around 10 knots. Seas 2 to 3 feet. Wave Detail:
East 2 feet at 4 seconds and north 2 feet at 7 seconds. Scattered
showers in the morning.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.MONDAY NIGHT...East winds around 15 knots. Seas around 3 feet.
.TUESDAY...East winds around 15 knots. Seas 3 to 4 feet. Scattered
showers.
.TUESDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet.
Scattered showers.

$$

AMZ723-210915-
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N-
409 PM AST Thu Nov 20 2025

.TONIGHT...Northeast winds 10 to 15 knots with gusts up to 20 knots.
Seas around 4 feet. Wave Detail: Northeast 3 feet at 5 seconds and
northeast 2 feet at 13 seconds. Isolated showers.
.FRIDAY...Northeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at 5 seconds and
northeast 2 feet at 12 seconds.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at
5 seconds and northeast 2 feet at 12 seconds. Scattered showers
after midnight.
.SATURDAY...Northeast winds 10 to 15 knots with gusts up to
20 knots. Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at
5 seconds and northeast 1 foot at 11 seconds.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
20 knots. Seas around 3 feet. Wave Detail: Northeast 3 feet at
5 seconds and northeast 1 foot at 11 seconds.
.SUNDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 3 feet. Wave Detail: Northeast 3 feet at 5 seconds and
northeast 1 foot at 11 seconds.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
20 knots. Seas around 3 feet.
.MONDAY...East winds 10 to 15 knots. Seas around 3 feet.
.MONDAY NIGHT...East winds around 15 knots. Seas 3 to 4 feet.
Scattered showers.
.TUESDAY...East winds 15 to 20 knots. Seas around 4 feet. Scattered
showers in the morning.
.TUESDAY NIGHT...East winds 15 to 20 knots. Seas around 5 feet.

$$

AMZ726-210915-
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John-
409 PM AST Thu Nov 20 2025

.TONIGHT...Northeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at 5 seconds.
Isolated showers this evening, then scattered showers after
midnight.
.FRIDAY...Northeast 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 afternoon.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at
5 seconds.
.SATURDAY...Northeast winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at
5 seconds.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to
3 feet. Wave Detail: Northeast 2 feet at 5 seconds.
.SUNDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 5 seconds.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots. Seas around 2 feet.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.MONDAY NIGHT...East winds around 15 knots. Seas 2 to 3 feet.
.TUESDAY...East winds 15 to 20 knots. Seas 3 to 4 feet.
.TUESDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet.

$$

AMZ733-210915-
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix-
409 PM AST Thu Nov 20 2025

.TONIGHT...Northeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at 5 seconds and
northeast 1 foot at 12 seconds. Scattered showers early this
evening, then isolated showers late this evening. Scattered showers
after midnight.
.FRIDAY...Northeast 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 12 seconds.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 3 to 4 feet. Wave Detail: East 4 feet
at 5 seconds and northeast 1 foot at 11 seconds. Scattered showers
in the evening.
.SATURDAY...Northeast winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. Seas 3 to 4 feet. Wave Detail: East
4 feet at 5 seconds.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
25 knots. Seas around 3 feet. Wave Detail: East 3 feet at 5 seconds.
Scattered showers in the evening.
.SUNDAY...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.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 4 feet.
.TUESDAY...East winds 15 to 20 knots. Seas 3 to 4 feet.
.TUESDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 5 feet.

$$

AMZ735-210915-
Coastal Waters of Southern Puerto Rico out 10 NM-
409 PM AST Thu Nov 20 2025

.TONIGHT...Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 6 seconds. Scattered showers early this
evening, then isolated showers late this evening and overnight.
.FRIDAY...Northeast winds 5 to 10 knots, becoming east 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East
3 feet at 6 seconds. Scattered showers in the afternoon.
.FRIDAY NIGHT...Northeast 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 evening.
.SATURDAY...Northeast winds 5 to 10 knots, becoming east 10 to
15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: East
3 feet at 5 seconds. Scattered showers in the afternoon.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to
3 feet. Wave Detail: East 3 feet at 5 seconds. Scattered showers in
the evening.
.SUNDAY...Northeast winds 5 to 10 knots, becoming east 10 to
15 knots with gusts up to 20 knots in the afternoon. Seas around
2 feet. Wave Detail: East 2 feet at 5 seconds.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots after midnight. Seas around
2 feet.
.MONDAY...Northeast winds 5 to 10 knots, becoming east 10 to
15 knots in the afternoon. Seas around 2 feet. Scattered showers in
the morning.
.MONDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet. Scattered
showers.
.TUESDAY NIGHT...Northeast winds 10 to 15 knots. Seas 3 to 4 feet.

$$

AMZ741-210915-
Mona Passage Southward to 17N-
409 PM AST Thu Nov 20 2025

.TONIGHT...Northeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 4 to 5 feet. Wave Detail: East 3 feet at 6 seconds and north
2 feet at 11 seconds. Isolated showers.
.FRIDAY...Northeast 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.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 3 to 4 feet. Wave Detail: Northeast
4 feet at 5 seconds and north 2 feet at 10 seconds. Scattered
showers in the evening.
.SATURDAY...East winds 15 to 20 knots, becoming northeast 10 to
15 knots in the afternoon. Seas 3 to 4 feet. Wave Detail: East
4 feet at 6 seconds and north 2 feet at 9 seconds.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
25 knots. Seas 3 to 4 feet. Wave Detail: Northeast 3 feet at
7 seconds and northeast 1 foot at 11 seconds. Scattered showers in
the evening.
.SUNDAY...Northeast winds 10 to 15 knots. Seas around 3 feet. Wave
Detail: East 3 feet at 6 seconds and northeast 1 foot at 11 seconds.
Scattered showers in the afternoon.
.SUNDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
25 knots. Seas around 3 feet. Scattered showers.
.MONDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.MONDAY NIGHT...East winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 3 to 4 feet.
.TUESDAY...East winds 15 to 20 knots. Seas 3 to 5 feet.
.TUESDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet.

$$

AMZ742-210915-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
409 PM AST Thu Nov 20 2025

.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas
3 to 5 feet. Wave Detail: Northeast 3 feet at 5 seconds and north
3 feet at 11 seconds. Isolated showers.
.FRIDAY...Northeast winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 4 feet. Wave Detail: Northeast 3 feet at 4 seconds and
north 2 feet at 10 seconds. Scattered showers in the afternoon.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
25 knots. Seas 2 to 4 feet. Wave Detail: Northeast 3 feet at
5 seconds and north 2 feet at 9 seconds.
.SATURDAY...Northeast winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 4 feet. Wave Detail: Northeast 3 feet at
5 seconds and north 2 feet at 9 seconds.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet.
Wave Detail: Northeast 3 feet at 5 seconds and north 2 feet at
8 seconds.
.SUNDAY...East winds 5 to 10 knots, becoming northeast 10 to
15 knots with gusts up to 20 knots in the afternoon. Seas 2 to
3 feet. Wave Detail: Northeast 2 feet at 6 seconds and northeast
1 foot at 11 seconds. Scattered showers in the afternoon.
.SUNDAY NIGHT...East winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 3 feet.
.MONDAY...East winds 5 to 10 knots, becoming northeast 10 to
15 knots in the afternoon. Seas 2 to 3 feet.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Scattered showers.
.TUESDAY...East winds 10 to 15 knots, becoming northeast 15 to
20 knots in the afternoon. Seas 2 to 4 feet.
.TUESDAY NIGHT...East winds 15 to 20 knots. Seas 2 to 4 feet.

$$

AMZ745-210915-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
409 PM AST Thu Nov 20 2025

.TONIGHT...Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Northwest 3 feet at 9 seconds and southeast 1 foot at
6 seconds. Scattered showers early this evening.
.FRIDAY...Northeast winds 5 to 10 knots, diminishing to around
5 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: Northwest
2 feet at 9 seconds and southeast 1 foot at 6 seconds. Scattered
showers in the afternoon.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
6 seconds and north 2 feet at 8 seconds. Scattered showers in the
evening.
.SATURDAY...Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 2 feet at 5 seconds and north 2 feet at 9 seconds.
Scattered showers in the afternoon.
.SATURDAY NIGHT...Northeast winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to
3 feet. Wave Detail: Southeast 2 feet at 6 seconds and north 2 feet
at 8 seconds.
.SUNDAY...East winds around 5 knots. Seas around 2 feet. Wave
Detail: North 1 foot at 6 seconds and southeast 1 foot at 6 seconds.
Scattered showers in the afternoon.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.MONDAY...East winds around 5 knots. Seas around 2 feet.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Seas around 2 feet.
.TUESDAY...East winds 5 to 10 knots. Seas around 2 feet.
.TUESDAY NIGHT...Northeast winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 2 to 3 feet.

$$