fzca52 tjsj 182003
cwfsju
expires:202512191000;;815834

coastal waters forecast
national weather service san juan pr
403 pm ast thu dec 18 2025

puerto rico and the u.s. virgin islands waters


amz712-191000-
coastal waters of northern puerto rico out 10 nm-
403 pm ast thu dec 18 2025

...small craft advisory in effect until midnight ast tonight...
...small craft should exercise caution after midnight ast tonight...

.tonight...east winds 10 to 15 knots with gusts up to 25 knots. seas
5 to 6 feet. wave detail: northeast 5 feet at 10 seconds and north
4 feet at 10 seconds. scattered showers early this evening, then
numerous showers late this evening and overnight. 
.friday...east winds 10 to 15 knots with gusts up to 20 knots. seas
5 to 6 feet. wave detail: north 5 feet at 10 seconds and east 3 feet
at 5 seconds. 
.friday night...east winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. seas around 5 feet. wave detail: northeast
5 feet at 9 seconds and east 3 feet at 5 seconds. 
.saturday...east winds 10 to 15 knots with gusts up to 20 knots.
seas 4 to 5 feet. wave detail: northeast 5 feet at 9 seconds and
northeast 1 foot at 15 seconds. scattered showers in the morning. 
.saturday night...east winds 10 to 15 knots with gusts up to
20 knots. seas 5 to 6 feet. wave detail: east 5 feet at 10 seconds
and northeast 5 feet at 13 seconds. scattered showers. 
.sunday...east winds 10 to 15 knots with gusts up to 20 knots. seas
6 to 7 feet. wave detail: east 6 feet at 11 seconds and northeast
6 feet at 12 seconds. 
.sunday night...east winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. seas 5 to 6 feet. scattered showers. 
.monday...east winds 5 to 10 knots, becoming northeast 10 to
15 knots in the afternoon. seas around 5 feet. scattered showers in
the afternoon. 
.monday night...northeast winds 10 to 15 knots. seas around 5 feet.
scattered showers. 
.tuesday...northeast winds 10 to 15 knots. seas around 5 feet.
scattered showers. 
.tuesday night...northeast winds 10 to 15 knots. seas 5 to 6 feet.
scattered showers. 

$$

fzca52 tjsj 182003
cwfsju
expires:202512191000;;815839

coastal waters forecast
national weather service san juan pr
403 pm ast thu dec 18 2025

puerto rico and the u.s. virgin islands waters


amz735-191000-
coastal waters of southern puerto rico out 10 nm-
403 pm ast thu dec 18 2025

.tonight...east winds 10 to 15 knots with gusts up to 25 knots. seas
3 to 4 feet. wave detail: east 4 feet at 6 seconds. scattered
showers until early morning, then isolated showers late. 
.friday...east winds 10 to 15 knots with gusts up to 25 knots. seas
3 to 4 feet. wave detail: east 4 feet at 6 seconds and east 1 foot
at 10 seconds. 
.friday night...east winds 10 to 15 knots with gusts up to 25 knots,
becoming northeast 5 to 10 knots after midnight. seas 3 to 4 feet.
wave detail: east 4 feet at 6 seconds. 
.saturday...northeast winds 5 to 10 knots, becoming east 10 to
15 knots in the afternoon. seas 2 to 4 feet. wave detail: east
3 feet at 6 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
4 feet. wave detail: east 3 feet at 6 seconds. scattered showers in
the evening. 
.sunday...east winds 5 to 10 knots, increasing to 10 to 15 knots in
the afternoon. gusts up to 25 knots. seas 2 to 4 feet. wave detail:
east 3 feet at 6 seconds and east 1 foot at 9 seconds. scattered
showers in the afternoon. 
.sunday night...east winds 10 to 15 knots, becoming northeast 5 to
10 knots after midnight. gusts up to 25 knots. seas 2 to 4 feet. 
.monday...northeast winds 5 to 10 knots, becoming east 10 to
15 knots in the afternoon. seas 2 to 3 feet. scattered showers in
the afternoon. 
.monday night...northeast winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. seas 2 to 3 feet. 
.tuesday...northeast winds 5 to 10 knots, becoming east 10 to
15 knots in the afternoon. seas 2 to 3 feet. scattered showers in
the afternoon. 
.tuesday night...northeast winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. seas 2 to 3 feet. 

$$

fzca52 tjsj 182003
cwfsju
expires:202512191000;;815840

coastal waters forecast
national weather service san juan pr
403 pm ast thu dec 18 2025

puerto rico and the u.s. virgin islands waters


amz741-191000-
mona passage southward to 17n-
403 pm ast thu dec 18 2025

...small craft advisory in effect until midnight ast tonight...
...small craft should exercise caution after midnight ast tonight...

.tonight...east winds 15 to 20 knots, diminishing to 10 to 15 knots
late. gusts up to 30 knots. seas 5 to 6 feet. wave detail: east
5 feet at 6 seconds and north 3 feet at 10 seconds. isolated showers
early this evening, then scattered showers late this evening and
overnight. 
.friday...east winds 10 to 15 knots with gusts up to 25 knots. seas
5 to 6 feet. wave detail: east 5 feet at 7 seconds and north 3 feet
at 10 seconds. scattered showers in the morning. 
.friday night...east winds 10 to 15 knots with gusts up to 20 knots.
seas 4 to 5 feet. wave detail: southeast 4 feet at 7 seconds and
north 3 feet at 9 seconds. 
.saturday...northeast winds 10 to 15 knots with gusts up to
25 knots. seas 4 to 5 feet. wave detail: east 4 feet at 7 seconds
and northeast 3 feet at 9 seconds. 
.saturday night...northeast winds 10 to 15 knots with gusts up to
25 knots. seas 4 to 5 feet. wave detail: northeast 4 feet at
8 seconds and east 3 feet at 7 seconds. scattered showers in the
evening. 
.sunday...east winds 10 to 15 knots with gusts up to 20 knots. seas
4 to 6 feet. wave detail: east 3 feet at 7 seconds and northeast
3 feet at 12 seconds. scattered showers in the afternoon. 
.sunday night...east winds 10 to 15 knots with gusts up to 20 knots.
seas 4 to 6 feet. 
.monday...east winds 10 to 15 knots. seas 4 to 6 feet. 
.monday night...northeast winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. seas 4 to 6 feet. 
.tuesday...northeast winds 15 to 20 knots, diminishing to 10 to
15 knots in the afternoon. seas 4 to 6 feet. scattered showers in
the afternoon. 
.tuesday night...northeast winds 10 to 15 knots. seas 4 to 5 feet.
scattered showers. 

$$

fzca52 tjsj 182003
cwfsju
expires:202512191000;;815841

coastal waters forecast
national weather service san juan pr
403 pm ast thu dec 18 2025

puerto rico and the u.s. virgin islands waters


amz742-191000-
coastal waters of northwestern puerto rico out 10 nm-
403 pm ast thu dec 18 2025

...small craft should exercise caution...

.tonight...northeast winds 15 to 20 knots, becoming east 5 to
10 knots. seas 4 to 6 feet. wave detail: northeast 4 feet at
5 seconds and north 4 feet at 11 seconds. isolated showers. 
.friday...east winds 10 to 15 knots, diminishing to 5 to 10 knots in
the afternoon. seas 3 to 5 feet. wave detail: north 4 feet at
9 seconds and east 3 feet at 6 seconds. scattered showers in the
afternoon. 
.friday night...east winds 10 to 15 knots with gusts up to 20 knots.
seas 3 to 5 feet. wave detail: north 4 feet at 9 seconds and south
1 foot at 7 seconds. 
.saturday...northeast winds 10 to 15 knots with gusts up to
20 knots. seas 2 to 4 feet. wave detail: north 4 feet at 8 seconds
and southeast 1 foot at 6 seconds. scattered showers in the
afternoon. 
.saturday night...northeast winds 10 to 15 knots with gusts up to
20 knots. seas 3 to 5 feet. wave detail: northeast 4 feet at
8 seconds and northeast 2 feet at 14 seconds. 
.sunday...east winds 10 to 15 knots, becoming northeast 5 to
10 knots in the afternoon. seas 3 to 5 feet. wave detail: northeast
5 feet at 12 seconds and southeast 1 foot at 3 seconds. scattered
showers in the afternoon. 
.sunday night...northeast winds 10 to 15 knots with gusts up to
20 knots. seas 3 to 5 feet. 
.monday...northeast winds 10 to 15 knots. seas 3 to 5 feet. 
.monday night...northeast winds 10 to 15 knots. seas 3 to 5 feet. 
.tuesday...northeast winds 15 to 20 knots. seas 3 to 5 feet.
scattered showers in the afternoon. 
.tuesday night...northeast winds 15 to 20 knots, diminishing to
10 to 15 knots after midnight. seas 3 to 5 feet. 

$$

fzca52 tjsj 182003
cwfsju
expires:202512191000;;815842

coastal waters forecast
national weather service san juan pr
403 pm ast thu dec 18 2025

puerto rico and the u.s. virgin islands waters


amz745-191000-
coastal waters of southwestern puerto rico out 10 nm-
403 pm ast thu dec 18 2025

.tonight...northeast winds 5 to 10 knots. seas 2 to 4 feet. wave
detail: northwest 3 feet at 10 seconds and southeast 2 feet at
6 seconds. isolated showers early this evening. 
.friday...east winds around 5 knots. seas 2 to 4 feet. wave detail:
northwest 3 feet at 10 seconds and southeast 2 feet at 6 seconds.
scattered showers in the afternoon. 
.friday night...east winds around 5 knots. seas 2 to 3 feet. wave
detail: south 2 feet at 7 seconds and northwest 2 feet at 9 seconds.
.saturday...east winds 5 to 10 knots. seas 2 to 3 feet. wave detail:
north 2 feet at 9 seconds and south 1 foot at 7 seconds. scattered
showers in the afternoon. 
.saturday night...northeast winds 5 to 10 knots. seas 2 to 3 feet.
wave detail: northwest 2 feet at 8 seconds and southeast 1 foot at
6 seconds. scattered showers in the evening. 
.sunday...east winds around 5 knots. seas 2 to 3 feet. wave detail:
north 2 feet at 8 seconds and south 1 foot at 6 seconds. numerous
showers in the afternoon. 
.sunday night...northeast winds 5 to 10 knots. seas 2 to 3 feet. 
.monday...east winds around 5 knots. seas 2 to 3 feet. numerous
showers in the afternoon. 
.monday night...northeast winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. seas 2 to 3 feet. 
.tuesday...northeast winds 10 to 15 knots, diminishing to 5 to
10 knots in the afternoon. seas 2 to 3 feet. numerous showers in the
afternoon. 
.tuesday night...northeast winds 5 to 10 knots. seas 2 to 3 feet. 

$$