National Weather Service Marine Forecast FZCA52 TJSJ
FZCA52 TJSJ 160831
CWFSJU
Coastal Waters Forecast
National Weather Service San Juan PR
431 AM AST Fri Jan 16 2026
Puerto Rico and the U.S. Virgin Islands Waters
AMZ700-162115
431 AM AST Fri Jan 16 2026
SYNOPSIS FOR PUERTO RICO AND THE U.S. VIRGIN ISLANDS WATERS
The surface high pressure across the central Atlantic will maintain gentle to moderate east to southeast winds through the end of the workweek. By Saturday, strengthening east to northeast winds, and the arrival of a long-period northerly swell will likely result in choppy to rough seas, leading to hazardous marine conditions during the weekend.
AMZ711-162115
Atlantic Waters of Puerto Rico and USVI from 10 NM to 19.5N
431 AM AST Fri Jan 16 2026
SMALL CRAFT ADVISORY IN EFFECT FROM SATURDAY AFTERNOON THROUGH MONDAY AFTERNOON
TODAY
East winds 10 to 15 knots with gusts up to 25 knots. Seas
4 to 5 feet. Wave Detail: East 4 feet at 9 seconds and north 2 feet
at 8 seconds. Isolated showers this morning.
TONIGHT
East winds 15 to 20 knots with gusts up to 25 knots. Seas
around 5 feet. Wave Detail: East 5 feet at 9 seconds and north
1 foot at 8 seconds.
SATURDAY
East winds 15 to 20 knots with gusts up to 30 knots.
Seas 5 to 6 feet. Wave Detail: East 6 feet at 6 seconds and east
6 feet at 9 seconds. Scattered showers in the morning.
SATURDAY NIGHT
East winds around 20 knots with gusts up to
30 knots. Seas 7 to 8 feet. Wave Detail: East 7 feet at 7 seconds
and northwest 4 feet at 12 seconds. Scattered showers after
midnight.
SUNDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas
7 to 8 feet. Wave Detail: East 7 feet at 8 seconds and northwest
3 feet at 10 seconds. Scattered showers in the morning.
SUNDAY NIGHT
East winds 15 to 20 knots with gusts up to 30 knots.
Seas around 7 feet. Wave Detail: East 7 feet at 9 seconds and
northwest 2 feet at 10 seconds.
MONDAY
East winds around 15 knots. Seas 6 to 7 feet.
MONDAY NIGHT
East winds 15 to 20 knots. Seas 6 to 8 feet.
Scattered showers.
TUESDAY
East winds 15 to 20 knots. Seas around 7 feet.
TUESDAY NIGHT
East winds 15 to 20 knots. Seas 6 to 7 feet.
Scattered showers.
AMZ712-162115
Coastal Waters of Northern Puerto Rico out 10 NM
431 AM AST Fri Jan 16 2026
TODAY
Southeast winds 5 to 10 knots, becoming east 10 to 15 knots
with gusts up to 25 knots late this morning and afternoon. Seas
around 4 feet. Wave Detail: East 4 feet at 9 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 25 knots. Seas
4 to 5 feet. Wave Detail: East 4 feet at 9 seconds and north 1 foot
at 8 seconds.
SATURDAY
East winds 15 to 20 knots with gusts up to 30 knots.
Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds and
northeast 4 feet at 9 seconds. Numerous showers in the morning.
SATURDAY NIGHT
East winds 15 to 20 knots with gusts up to
30 knots. Seas 5 to 7 feet. Wave Detail: Northeast 6 feet at
7 seconds and northwest 4 feet at 12 seconds. Scattered showers.
SUNDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas
6 to 7 feet. Wave Detail: Northeast 6 feet at 8 seconds and
northwest 3 feet at 11 seconds. Scattered showers.
SUNDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Gusts up to 30 knots. Seas 5 to 7 feet.
Wave Detail: Northeast 6 feet at 8 seconds and northwest 2 feet at
10 seconds. Scattered showers in the evening.
MONDAY
East winds 10 to 15 knots, increasing to 15 to 20 knots in
the afternoon. Seas 5 to 6 feet. Scattered showers in the afternoon.
MONDAY NIGHT
East winds 10 to 15 knots. Seas 5 to 6 feet.
TUESDAY
East winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. Seas 5 to 6 feet. Scattered showers in the
morning.
TUESDAY NIGHT
East winds 10 to 15 knots. Seas 5 to 6 feet.
Scattered showers.
AMZ716-162115
Coastal Waters from Cabo San Juan to the waters between Anegada
Island and Virgin Gorda and North 10 NM
431 AM AST Fri Jan 16 2026
TODAY
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 east 3 feet
at 9 seconds. Isolated showers.
TONIGHT
East 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 east 3 feet at 8 seconds.
SATURDAY
East winds 15 to 20 knots with gusts up to 30 knots.
Seas 3 to 5 feet. Wave Detail: East 5 feet at 7 seconds and north
1 foot at 8 seconds. Numerous showers in the morning.
SATURDAY NIGHT
East winds around 20 knots with gusts up to
30 knots. Seas 4 to 6 feet. Wave Detail: East 6 feet at 6 seconds
and northwest 2 feet at 13 seconds. Scattered showers after
midnight.
SUNDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas
5 to 7 feet. Wave Detail: East 6 feet at 6 seconds and northwest
3 feet at 12 seconds. Scattered showers in the morning.
SUNDAY NIGHT
East winds 15 to 20 knots with gusts up to 25 knots.
Seas 4 to 6 feet. Wave Detail: East 5 feet at 6 seconds and
northeast 5 feet at 9 seconds.
MONDAY
East winds around 15 knots. Seas 4 to 6 feet. Scattered
showers in the afternoon.
MONDAY NIGHT
East winds 15 to 20 knots. Seas 4 to 6 feet.
TUESDAY
East winds around 15 knots. Seas 4 to 6 feet.
TUESDAY NIGHT
East winds around 15 knots. Seas 4 to 5 feet.
Scattered showers.
AMZ723-162115
Anegada Passage east of Virgin Gorda and Saint Croix south to 17N
431 AM AST Fri Jan 16 2026
SMALL CRAFT SHOULD EXERCISE CAUTION
TODAY
East winds 15 to 20 knots with gusts up to 25 knots. Seas
around 5 feet. Wave Detail: Southeast 5 feet at 6 seconds and east
3 feet at 9 seconds. Isolated showers this morning.
TONIGHT
East winds 15 to 20 knots with gusts up to 25 knots. Seas
4 to 5 feet. Wave Detail: East 4 feet at 6 seconds and east 3 feet
at 9 seconds. Scattered showers after midnight.
SATURDAY
East winds 15 to 20 knots with gusts up to 30 knots.
Seas 5 to 6 feet. Wave Detail: East 6 feet at 6 seconds and east
2 feet at 9 seconds. Numerous showers in the morning.
SATURDAY NIGHT
East winds around 20 knots with gusts up to
30 knots. Seas around 7 feet. Wave Detail: East 7 feet at 7 seconds
and northeast 1 foot at 14 seconds.
SUNDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas
6 to 7 feet. Wave Detail: East 7 feet at 7 seconds and northeast
1 foot at 13 seconds.
SUNDAY NIGHT
East winds 15 to 20 knots with gusts up to 25 knots.
Seas 6 to 7 feet. Wave Detail: East 6 feet at 8 seconds and
northwest 1 foot at 10 seconds.
MONDAY
East winds 15 to 20 knots. Seas 5 to 6 feet.
MONDAY NIGHT
East winds 15 to 20 knots. Seas 5 to 7 feet.
TUESDAY
East winds 15 to 20 knots. Seas 5 to 7 feet.
TUESDAY NIGHT
East winds around 15 knots. Seas 5 to 6 feet.
AMZ726-162115
Coastal waters east of Puerto Rico, around Vieques, and around and
just north of Culebra and Saint John
431 AM AST Fri Jan 16 2026
TODAY
East winds 10 to 15 knots with gusts up to 25 knots. Seas
3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds and east
3 feet at 9 seconds. Isolated showers.
TONIGHT
East winds 15 to 20 knots with gusts up to 25 knots. Seas
3 to 5 feet. Wave Detail: East 4 feet at 7 seconds.
SATURDAY
East winds 15 to 20 knots with gusts up to 30 knots.
Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds and east
2 feet at 9 seconds. Scattered showers in the morning.
SATURDAY NIGHT
East winds 20 to 25 knots with gusts up to
30 knots. Seas 5 to 7 feet. Wave Detail: East 6 feet at 6 seconds.
Scattered showers after midnight.
SUNDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas
5 to 6 feet. Wave Detail: East 6 feet at 7 seconds. Scattered
showers in the morning.
SUNDAY NIGHT
East winds 15 to 20 knots with gusts up to 25 knots.
Seas 4 to 6 feet. Wave Detail: East 5 feet at 7 seconds and
northwest 1 foot at 8 seconds. Scattered showers in the evening.
MONDAY
East winds 15 to 20 knots. Seas 4 to 6 feet. Scattered
showers in the afternoon.
MONDAY NIGHT
East winds 15 to 20 knots. Seas 4 to 6 feet.
Scattered showers.
TUESDAY
East winds 15 to 20 knots. Seas 4 to 6 feet.
TUESDAY NIGHT
East winds around 15 knots. Seas 4 to 5 feet.
Scattered showers.
AMZ733-162115
Caribbean waters of Puerto Rico from 10 NM to 17N, including the
coastal waters of Saint Croix
431 AM AST Fri Jan 16 2026
TODAY
East winds around 15 knots with gusts up to 25 knots. Seas
4 to 5 feet. Wave Detail: East 4 feet at 6 seconds and east 2 feet
at 9 seconds. Isolated showers.
TONIGHT
East winds 15 to 20 knots with gusts up to 30 knots. Seas
4 to 5 feet. Wave Detail: East 5 feet at 7 seconds and northeast
3 feet at 9 seconds.
SATURDAY
East winds 15 to 20 knots with gusts up to 30 knots.
Seas 5 to 6 feet. Wave Detail: East 6 feet at 6 seconds and east
1 foot at 9 seconds. Scattered showers in the morning.
SATURDAY NIGHT
East winds around 20 knots with gusts up to
30 knots. Seas 6 to 7 feet. Wave Detail: East 7 feet at 7 seconds.
Scattered showers after midnight.
SUNDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas
6 to 7 feet. Wave Detail: East 7 feet at 7 seconds. Scattered
showers in the morning.
SUNDAY NIGHT
East winds 15 to 20 knots with gusts up to 25 knots.
Seas around 6 feet. Wave Detail: East 6 feet at 7 seconds.
MONDAY
East winds 15 to 20 knots. Seas 5 to 6 feet.
MONDAY NIGHT
East winds 15 to 20 knots. Seas around 5 feet.
TUESDAY
East winds 15 to 20 knots. Seas 5 to 6 feet.
TUESDAY NIGHT
East winds around 15 knots. Seas around 5 feet.
AMZ735-162115
Coastal Waters of Southern Puerto Rico out 10 NM
431 AM AST Fri Jan 16 2026
TODAY
East winds 10 to 15 knots with gusts up to 20 knots. Seas
2 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds. Isolated
showers.
TONIGHT
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.
SATURDAY
East winds 15 to 20 knots with gusts up to 30 knots.
Seas 3 to 5 feet. Wave Detail: East 5 feet at 7 seconds. Scattered
showers in the morning.
SATURDAY NIGHT
East winds 15 to 20 knots with gusts up to
25 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 7 seconds.
SUNDAY
East winds 15 to 20 knots with gusts up to 25 knots. Seas
4 to 6 feet. Wave Detail: East 5 feet at 7 seconds.
SUNDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 4 to 5 feet. Wave Detail: East 5 feet
at 7 seconds.
MONDAY
East winds 10 to 15 knots. Seas 3 to 5 feet.
MONDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 5 feet.
TUESDAY
East winds 10 to 15 knots. Seas 3 to 5 feet. Scattered
showers in the afternoon.
TUESDAY NIGHT
East winds 10 to 15 knots. Seas 3 to 4 feet.
AMZ741-162115
Mona Passage Southward to 17N
431 AM AST Fri Jan 16 2026
TODAY
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 and north
2 feet at 9 seconds. Scattered showers early this morning. Isolated
showers early this afternoon, then scattered showers late.
TONIGHT
East winds 10 to 15 knots, increasing to 15 to 20 knots
after midnight. Gusts up to 30 knots. Seas 3 to 5 feet. Wave Detail:
Northeast 5 feet at 7 seconds and north 1 foot at 8 seconds.
SATURDAY
East winds 15 to 20 knots with gusts up to 30 knots.
Seas 4 to 6 feet. Wave Detail: East 6 feet at 7 seconds and
northeast 1 foot at 8 seconds. Scattered showers in the afternoon.
SATURDAY NIGHT
East winds 20 to 25 knots, diminishing to 15 to
20 knots after midnight. Seas 5 to 7 feet. Wave Detail: East 7 feet
at 7 seconds and northwest 2 feet at 12 seconds. Scattered showers
in the evening.
SUNDAY
East winds 15 to 20 knots with gusts up to 30 knots. Seas
5 to 7 feet. Wave Detail: East 7 feet at 7 seconds and north 2 feet
at 11 seconds. Scattered showers.
SUNDAY NIGHT
East winds 15 to 20 knots with gusts up to 25 knots.
Seas 5 to 6 feet. Wave Detail: East 6 feet at 7 seconds and north
2 feet at 10 seconds.
MONDAY
East winds 15 to 20 knots, diminishing to 10 to 15 knots
in the afternoon. Seas 4 to 6 feet.
MONDAY NIGHT
East winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. Seas 4 to 5 feet. Scattered showers.
TUESDAY
East winds 15 to 20 knots. Seas 4 to 5 feet. Scattered
showers in the morning.
TUESDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 4 to 5 feet. Scattered showers.
AMZ742-162115
Coastal Waters of Northwestern Puerto Rico out 10 NM
431 AM AST Fri Jan 16 2026
TODAY
East winds around 5 knots, becoming northeast late. Seas
2 to 3 feet. Wave Detail: Southeast 2 feet at 6 seconds and north
2 feet at 9 seconds. Scattered showers early this afternoon.
Numerous showers with isolated thunderstorms late.
TONIGHT
East winds 10 to 15 knots with gusts up to 25 knots. Seas
2 to 4 feet. Wave Detail: Northeast 3 feet at 4 seconds and north
2 feet at 8 seconds.
SATURDAY
East winds 10 to 15 knots with gusts up to 30 knots.
Seas 2 to 4 feet. Wave Detail: East 3 feet at 5 seconds and north
1 foot at 8 seconds. Numerous showers in the afternoon.
SATURDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Gusts up to 30 knots. Seas 4 to 6 feet.
Wave Detail: Northeast 4 feet at 6 seconds and northwest 3 feet at
12 seconds.
SUNDAY
East winds 10 to 15 knots with gusts up to 20 knots. Seas
4 to 6 feet. Wave Detail: Northeast 4 feet at 7 seconds and
northwest 3 feet at 11 seconds. Scattered showers in the afternoon.
SUNDAY NIGHT
East winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. Gusts up to 25 knots. Seas 3 to 5 feet.
Wave Detail: Northeast 4 feet at 7 seconds and northwest 2 feet at
10 seconds.
MONDAY
East winds 5 to 10 knots, increasing to 10 to 15 knots in
the afternoon. Seas 2 to 4 feet. Scattered showers in the afternoon.
MONDAY NIGHT
East winds 10 to 15 knots. Seas 2 to 4 feet.
TUESDAY
East winds 10 to 15 knots. Seas 3 to 5 feet. Scattered
showers in the afternoon.
TUESDAY NIGHT
East winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. Seas 3 to 5 feet.
Winds and seas higher in and near thunderstorms.
AMZ745-162115
Coastal Waters of Southwestern Puerto Rico out 10 NM
431 AM AST Fri Jan 16 2026
TODAY
East winds 5 to 10 knots, becoming southeast 10 to 15 knots
with gusts up to 20 knots early this afternoon, then becoming east
5 to 10 knots with gusts up to 20 knots late. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 5 seconds and northwest 2 feet at
9 seconds. Scattered showers early this afternoon. Numerous showers
with isolated thunderstorms late.
TONIGHT
East winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 6 seconds and north 1 foot at 8 seconds.
Scattered showers in the evening.
SATURDAY
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: Northeast 2 feet at 5 seconds and north 1 foot at 8 seconds.
Scattered showers in the afternoon.
SATURDAY NIGHT
East winds 10 to 15 knots with gusts up to
25 knots, diminishing to 5 to 10 knots after midnight. Seas 2 to
4 feet. Wave Detail: East 3 feet at 5 seconds and northwest 3 feet
at 12 seconds.
SUNDAY
East winds 5 to 10 knots, increasing to 15 to 20 knots
with gusts up to 25 knots in the afternoon. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 6 seconds and northwest 3 feet at
12 seconds.
SUNDAY 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. Wave
Detail: Southeast 3 feet at 6 seconds and northwest 2 feet at
10 seconds.
MONDAY
East winds 5 to 10 knots. Seas 2 to 3 feet. Scattered
showers in the afternoon.
MONDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 3 feet.
TUESDAY
East winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 2 to 3 feet. Scattered showers in the afternoon.
TUESDAY NIGHT
East winds 5 to 10 knots. Seas 2 to 3 feet.
Winds and seas higher in and near thunderstorms.
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