(1/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/20/2026 4:12 AM America/Puerto_Rico.
Valid through 8/20/2026 5:15 PM America/Puerto_Rico.
fzca52 tjsj 200812
cwfsju
expires:202608202115;;038963
coastal waters forecast
national weather service san juan pr
412 am ast thu aug 20 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.
amz712-202115-
coastal waters of northern puerto rico out 10 nm-
412 am ast thu aug 20 2026
...small craft should exercise caution...
.today...east winds 10 to 15 knots with gusts up to 20 knots,
increasing to 15 to 20 knots with gusts up to 30 knots this
afternoon. seas 3 to 4 feet, occasionally to 5 feet. wave detail:
east 4 feet at 5 seconds and northeast 3 feet at 8 seconds. isolated
showers until late afternoon.
.tonight...east winds 15 to 20 knots with gusts up to 30 knots,
diminishing to 10 to 15 knots with gusts up to 20 knots after
midnight. seas 3 to 5 feet, occasionally to 6 feet. wave detail:
northeast 4 feet at 7 seconds.
.friday...east winds 10 to 15 knots with gusts up to 20 knots,
increasing to 15 to 20 knots with gusts up to 30 knots in the
afternoon. seas 3 to 4 feet, occasionally to 5 feet. wave detail:
northeast 4 feet at 7 seconds.
.friday night...east winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. seas 4 to 5 feet, occasionally to 6 feet.
wave detail: east 4 feet at 5 seconds and northeast 4 feet at
8 seconds.
.saturday...east winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. seas around 4 feet, occasionally to 5 feet. wave
detail: northeast 4 feet at 7 seconds.
.saturday night...east winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. seas 3 to 4 feet, occasionally to 5 feet.
wave detail: northeast 4 feet at 7 seconds. scattered showers.
.sunday...east winds 10 to 15 knots, increasing to 15 to 20 knots in
the afternoon. seas 3 to 4 feet, occasionally to 5 feet. scattered
showers in the morning.
.sunday night...east winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. seas 3 to 5 feet, occasionally to 6 feet.
scattered showers.
.monday...east winds 10 to 15 knots, increasing to 15 to 20 knots in
the afternoon. seas 3 to 4 feet, occasionally to 5 feet. scattered
showers in the morning.
.monday night...east winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. seas 4 to 5 feet, occasionally to 6 feet.
$$
(2/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/20/2026 4:12 AM America/Puerto_Rico.
Valid through 8/20/2026 5:15 PM America/Puerto_Rico.
fzca52 tjsj 200812
cwfsju
expires:202608202115;;038968
coastal waters forecast
national weather service san juan pr
412 am ast thu aug 20 2026
puerto rico and the u.s. virgin islands waters
seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the average
highest 10 percent of the waves.
amz735-202115-
coastal waters of southern puerto rico out 10 nm-
412 am ast thu aug 20 2026
...small craft should exercise caution...
.today...east winds 15 to 20 knots with gusts up to 25 knots. seas
3 to 4 feet, occasionally to 5 feet. wave detail: east 4 feet at
6 seconds. isolated showers early this morning.
.tonight...east winds 15 to 20 knots, diminishing to 10 to 15 knots
after midnight. gusts up to 30 knots. seas 3 to 4 feet, occasionally
to 5 feet. wave detail: east 4 feet at 6 seconds.
.friday...east winds 10 to 15 knots with gusts up to 25 knots. seas
3 to 4 feet, occasionally to 5 feet. wave detail: east 4 feet at
6 seconds.
.friday night...east winds 10 to 15 knots with gusts up to 25 knots.
seas 3 to 4 feet, occasionally to 5 feet. wave detail: east 4 feet
at 7 seconds.
.saturday...east winds 10 to 15 knots with gusts up to 25 knots.
seas 3 to 4 feet, occasionally to 5 feet. wave detail: east 4 feet
at 7 seconds.
.saturday night...east winds 10 to 15 knots with gusts up to
25 knots. seas 3 to 4 feet, occasionally to 5 feet. wave detail:
east 4 feet at 6 seconds.
.sunday...east winds 10 to 15 knots. seas 3 to 4 feet, occasionally
to 5 feet.
.sunday night...east winds 10 to 15 knots. seas 3 to 4 feet,
occasionally to 5 feet.
.monday...east winds 10 to 15 knots, increasing to 15 to 20 knots in
the afternoon. seas 3 to 4 feet, occasionally to 5 feet.
.monday night...east winds 10 to 15 knots. seas 3 to 5 feet,
occasionally to 6 feet.
$$
(3/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/20/2026 4:12 AM America/Puerto_Rico.
Valid through 8/20/2026 5:15 PM America/Puerto_Rico.
fzca52 tjsj 200812
cwfsju
expires:202608202115;;038969
coastal waters forecast
national weather service san juan pr
412 am ast thu aug 20 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.
amz741-202115-
mona passage southward to 17n-
412 am ast thu aug 20 2026
...small craft should exercise caution...
.today...east winds 15 to 20 knots with gusts up to 25 knots. seas
3 to 5 feet, occasionally to 6 feet. wave detail: east 5 feet at
5 seconds and northeast 1 foot at 8 seconds. isolated showers early
this morning. scattered showers with isolated thunderstorms late.
.tonight...east winds 15 to 20 knots with gusts up to 25 knots. seas
4 to 6 feet, occasionally to 8 feet. wave detail: northeast 5 feet
at 7 seconds.
.friday...east winds 15 to 20 knots with gusts up to 30 knots. seas
4 to 6 feet, occasionally to 8 feet. wave detail: east 6 feet at
7 seconds.
.friday night...east winds 15 to 20 knots with gusts up to 25 knots.
seas 4 to 5 feet, occasionally to 6 feet. wave detail: east 5 feet
at 7 seconds.
.saturday...east winds 15 to 20 knots, diminishing to 10 to 15 knots
in the afternoon. seas 3 to 5 feet, occasionally to 6 feet. wave
detail: east 5 feet at 7 seconds. scattered showers in the
afternoon.
.saturday night...east winds 10 to 15 knots with gusts up to
25 knots. seas 3 to 5 feet, occasionally to 6 feet. wave detail:
east 5 feet at 7 seconds. scattered showers in the evening.
.sunday...east winds 15 to 20 knots, diminishing to 10 to 15 knots
in the afternoon. seas 3 to 5 feet, occasionally to 6 feet.
.sunday night...east winds 15 to 20 knots. seas 3 to 5 feet,
occasionally to 6 feet.
.monday...east winds 15 to 20 knots, diminishing to 10 to 15 knots
in the afternoon. seas 3 to 5 feet, occasionally to 6 feet.
scattered showers in the afternoon.
.monday night...east winds 15 to 20 knots. seas 3 to 5 feet,
occasionally to 6 feet. scattered showers.
winds and seas higher in and near thunderstorms.
$$
(4/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/20/2026 4:12 AM America/Puerto_Rico.
Valid through 8/20/2026 5:15 PM America/Puerto_Rico.
fzca52 tjsj 200812
cwfsju
expires:202608202115;;038970
coastal waters forecast
national weather service san juan pr
412 am ast thu aug 20 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.
amz742-202115-
coastal waters of northwestern puerto rico out 10 nm-
412 am ast thu aug 20 2026
.today...northeast winds 5 to 10 knots with gusts up to 20 knots,
increasing to 10 to 15 knots with gusts up to 25 knots late. seas
2 to 3 feet. wave detail: southeast 2 feet at 5 seconds and north
1 foot at 8 seconds. isolated showers and thunderstorms early this
afternoon. scattered showers with isolated thunderstorms late.
.tonight...east 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 3 feet at 6 seconds.
.friday...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 3 feet at 7 seconds and southeast
2 feet at 6 seconds. scattered showers in the afternoon.
.friday night...east winds 10 to 15 knots with gusts up to 25 knots.
seas 2 to 4 feet, occasionally to 5 feet. wave detail: northeast
3 feet at 7 seconds.
.saturday...northeast winds 5 to 10 knots. seas 2 to 3 feet. wave
detail: southeast 2 feet at 5 seconds and northeast 2 feet at
6 seconds. numerous showers in the afternoon.
.saturday night...east 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 2 feet at 6 seconds.
.sunday...east winds 5 to 10 knots. seas 2 to 3 feet. scattered
showers in the afternoon.
.sunday night...east winds 5 to 10 knots. seas 2 to 3 feet.
.monday...northeast winds 5 to 10 knots. seas 2 to 3 feet. numerous
showers in the afternoon.
.monday night...east winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. seas 2 to 3 feet. scattered showers.
winds and seas higher in and near thunderstorms.
$$
(5/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/20/2026 4:12 AM America/Puerto_Rico.
Valid through 8/20/2026 5:15 PM America/Puerto_Rico.
fzca52 tjsj 200812
cwfsju
expires:202608202115;;038971
coastal waters forecast
national weather service san juan pr
412 am ast thu aug 20 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.
amz745-202115-
coastal waters of southwestern puerto rico out 10 nm-
412 am ast thu aug 20 2026
.today...southeast winds 10 to 15 knots with gusts up to 25 knots.
seas 2 to 3 feet. wave detail: east 2 feet at 4 seconds and north
1 foot at 6 seconds. isolated showers until late afternoon. isolated
thunderstorms this afternoon. scattered showers late.
.tonight...east winds 10 to 15 knots with gusts up to 25 knots. seas
2 to 3 feet. wave detail: southeast 2 feet at 5 seconds and north
1 foot at 7 seconds.
.friday...east winds 10 to 15 knots, becoming southeast in the
afternoon. seas 2 to 3 feet. wave detail: southeast 2 feet at
6 seconds and north 1 foot at 6 seconds. scattered showers in the
afternoon.
.friday night...east winds 5 to 10 knots. seas 2 to 3 feet. wave
detail: southeast 2 feet at 6 seconds.
.saturday...east winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. seas 2 to 3 feet. wave detail: southeast
2 feet at 5 seconds. scattered showers in the afternoon.
.saturday night...east winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. seas 2 to 3 feet. wave detail: southeast
2 feet at 5 seconds.
.sunday...east winds 10 to 15 knots. seas 2 to 3 feet.
.sunday night...east winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. seas 2 to 3 feet.
.monday...east winds 5 to 10 knots, increasing to 10 to 15 knots in
the afternoon. seas around 2 feet.
.monday night...east winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. seas around 2 feet.
winds and seas higher in and near thunderstorms.
$$
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