635
FZCA52 TJSJ 190755
CWFSJU

Coastal Waters Forecast
National Weather Service San Juan PR
355 AM AST Sat Sep 19 2026

Puerto Rico and the U.S. Virgin Islands Waters

Seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the average
highest 10 percent of the waves.

AMZ700-192200-
355 AM AST Sat Sep 19 2026

.Synopsis for Puerto Rico and the U.S. Virgin Islands Waters...

A surface high pressure extending across the Atlantic north of the
region will maintain gentle to moderate easterly winds across the
local waters through the weekend. The surface high will strengthen
northeast of the area early next week, leading to a slight
increase in winds and locally choppy seas across the offshore
waters. Passing showers will remain possible across the regional
waters each day, while afternoon thunderstorms may linger into the
evening hours across the western waters of Puerto Rico.

$$

AMZ711-192200-
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N-
355 AM AST Sat Sep 19 2026

.TODAY...East winds 5 to 10 knots. Seas 3 to 4 feet, occasionally to
5 feet. Wave Detail: East 3 feet at 7 seconds and north 2 feet at
8 seconds. Scattered showers early this morning, then isolated
showers late this morning and afternoon.
.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 3 feet. Wave Detail: East 3 feet at 7 seconds and north
2 feet at 8 seconds.
.SUNDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
around 3 feet. Wave Detail: East 3 feet at 7 seconds.
.SUNDAY NIGHT...East winds 10 to 15 knots, becoming southeast 5 to
10 knots after midnight. Seas around 3 feet. Wave Detail: East
3 feet at 6 seconds. Scattered showers.
.MONDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas around 3 feet. Wave Detail: East 3 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 3 feet. Wave Detail: East 3 feet at 6 seconds.
.TUESDAY...East winds 10 to 15 knots. Seas around 3 feet.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
.WEDNESDAY...East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet. Scattered showers.

$$

AMZ712-192200-
Coastal Waters of Northern Puerto Rico out 10 NM-
355 AM AST Sat Sep 19 2026

.TODAY...East winds 5 to 10 knots, increasing to 10 to 15 knots with
gusts up to 20 knots this afternoon. Seas around 3 feet. Wave
Detail: East 3 feet at 7 seconds and north 2 feet at 8 seconds.
Scattered showers early this morning. Isolated showers this
afternoon.
.TONIGHT...East winds 5 to 10 knots. Seas around 3 feet. Wave
Detail: East 3 feet at 7 seconds.
.SUNDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots
with gusts up to 20 knots in the afternoon. Seas around 3 feet. Wave
Detail: East 3 feet at 7 seconds and northeast 1 foot at 11 seconds.
Scattered showers.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 3 feet.
Wave Detail: East 3 feet at 6 seconds. Scattered showers in the
evening.
.MONDAY...Southeast winds 5 to 10 knots, becoming east 10 to
15 knots with gusts up to 20 knots in the afternoon. Seas around
3 feet. Wave Detail: East 3 feet at 6 seconds. Scattered showers in
the afternoon.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: East 3 feet at 6 seconds. Scattered showers in the
evening.
.TUESDAY...East winds 5 to 10 knots, increasing to 10 to 15 knots in
the afternoon. Seas 2 to 3 feet.
.TUESDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas around 3 feet.
.WEDNESDAY...East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 3 to 4 feet, occasionally to 5 feet.

$$

AMZ716-192200-
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM-
355 AM AST Sat Sep 19 2026

.TODAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
East 2 feet at 6 seconds and north 2 feet at 8 seconds. Scattered
showers early this morning, then isolated showers late this morning
and afternoon.
.TONIGHT...East winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 6 seconds and north 2 feet at 8 seconds.
Scattered showers.
.SUNDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
East 2 feet at 5 seconds and north 2 feet at 8 seconds. Scattered
showers.
.SUNDAY NIGHT...East winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 5 seconds and north 1 foot at 7 seconds.
Scattered showers.
.MONDAY...Southeast winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 5 seconds and north 1 foot at 7 seconds.
Scattered showers in the afternoon.
.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 and north
1 foot at 7 seconds.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Scattered showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Scattered showers.

$$

AMZ723-192200-
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N-
355 AM AST Sat Sep 19 2026

.TODAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
East 3 feet at 5 seconds and northeast 1 foot at 11 seconds.
Isolated showers until late afternoon, then scattered showers late.
.TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 5 seconds and northeast 1 foot at 11 seconds.
Scattered showers.
.SUNDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds and northeast 1 foot at
10 seconds. Scattered showers.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds. Scattered showers after
midnight.
.MONDAY...East winds around 10 knots. Seas around 3 feet. Wave
Detail: Southeast 3 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 3 feet. Wave Detail: Southeast 3 feet at 6 seconds.
Scattered showers after midnight.
.TUESDAY...East winds 10 to 15 knots. Seas 3 to 4 feet, occasionally
to 5 feet.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
.WEDNESDAY...East winds 10 to 15 knots. Seas 3 to 4 feet,
occasionally to 5 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet.
Scattered showers.

$$

AMZ726-192200-
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John-
355 AM AST Sat Sep 19 2026

.TODAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
East 2 feet at 6 seconds. Isolated showers.
.TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 6 seconds. Scattered showers.
.SUNDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail:
East 2 feet at 5 seconds. Scattered showers.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 5 seconds. Scattered showers in the evening.
.MONDAY...Southeast winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 5 seconds. Scattered showers in the
afternoon.
.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 in the evening.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Scattered
showers in the morning.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Scattered showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Scattered showers.

$$

AMZ733-192200-
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix-
355 AM AST Sat Sep 19 2026

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

$$

AMZ735-192200-
Coastal Waters of Southern Puerto Rico out 10 NM-
355 AM AST Sat Sep 19 2026

.TODAY...East winds 5 to 10 knots, increasing to 10 to 15 knots with
gusts up to 20 knots this afternoon. Seas 2 to 3 feet. Wave Detail:
East 3 feet at 6 seconds. Isolated showers this morning. Isolated
showers late.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
East 3 feet at 6 seconds. Scattered showers after midnight.
.SUNDAY...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. Scattered
showers in the morning.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.MONDAY...East winds 10 to 15 knots with gusts up to 20 knots. Seas
2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds. Scattered showers in the
evening.
.TUESDAY...East winds 10 to 15 knots. Seas around 3 feet.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas around 3 feet.
Scattered showers.
.WEDNESDAY...East winds 10 to 15 knots. Seas around 3 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Seas 2 to 3 feet.

$$

AMZ741-192200-
Mona Passage Southward to 17N-
355 AM AST Sat Sep 19 2026

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

$$

AMZ742-192200-
Coastal Waters of Northwestern Puerto Rico out 10 NM-
355 AM AST Sat Sep 19 2026

.TODAY...East winds around 5 knots, becoming northeast this
afternoon. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at
7 seconds. Scattered showers with isolated thunderstorms early this
afternoon. Numerous showers with isolated thunderstorms late.
.TONIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
Northeast 3 feet at 7 seconds. Numerous showers in the evening.
.SUNDAY...East winds 5 to 10 knots, becoming northeast in the
afternoon. Seas 2 to 3 feet. Wave Detail: North 3 feet at 7 seconds.
Numerous showers in the afternoon.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 2 feet at 7 seconds. Numerous showers in the
evening.
.MONDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave Detail:
Northeast 2 feet at 7 seconds. Numerous showers in the afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 6 seconds. Numerous showers in the evening.
.TUESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered
showers in the afternoon.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet.
.WEDNESDAY...East winds 5 to 10 knots, becoming north in the
afternoon. Seas 2 to 3 feet. Scattered showers in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

AMZ745-192200-
Coastal Waters of Southwestern Puerto Rico out 10 NM-
355 AM AST Sat Sep 19 2026

.TODAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
South 2 feet at 6 seconds and north 2 feet at 8 seconds. Scattered
showers with isolated thunderstorms this afternoon.
.TONIGHT...East winds 5 to 10 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.
.SUNDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots.
Seas around 2 feet. Wave Detail: Southeast 2 feet at 5 seconds and
north 1 foot at 8 seconds. Scattered showers in the afternoon.
.SUNDAY 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.
Scattered showers in the evening.
.MONDAY...Southeast 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
north 1 foot at 7 seconds. Scattered showers in the afternoon.
.MONDAY 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.
Scattered showers in the evening.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas 2 to 3 feet.
.WEDNESDAY...East winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. Seas around 2 feet.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$