(1/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/21/2026 4:11 PM America/Puerto_Rico.
Valid through 8/22/2026 5:15 AM America/Puerto_Rico.
fzca52 tjsj 212011
cwfsju
expires:202608220915;;127158
coastal waters forecast
national weather service san juan pr
411 pm ast fri aug 21 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.
amz712-220915-
coastal waters of northern puerto rico out 10 nm-
411 pm ast fri aug 21 2026
.tonight...east winds 10 to 15 knots with gusts up to 20 knots. seas
3 to 4 feet, occasionally to 5 feet. wave detail: east 4 feet at
8 seconds. isolated showers.
.saturday...east winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. seas 3 to 4 feet, occasionally to 5 feet. wave
detail: east 4 feet at 8 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 7 seconds.
.sunday...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:
east 4 feet at 7 seconds. scattered showers in the morning.
.sunday night...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 4 feet, occasionally to 5 feet. wave detail:
east 4 feet at 6 seconds. scattered showers.
.monday...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:
east 4 feet at 6 seconds.
.monday night...east winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. seas 3 to 4 feet, occasionally to 5 feet.
.tuesday...east winds 10 to 15 knots. seas around 3 feet. scattered
showers.
.tuesday night...east winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. seas 3 to 4 feet, occasionally to 5 feet.
scattered showers.
.wednesday...east winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. seas 3 to 5 feet, occasionally to 6 feet.
scattered showers in the morning.
.wednesday night...east winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. seas 4 to 6 feet, occasionally to 8 feet.
scattered showers.
$$
(2/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/21/2026 4:11 PM America/Puerto_Rico.
Valid through 8/22/2026 5:15 AM America/Puerto_Rico.
fzca52 tjsj 212011
cwfsju
expires:202608220915;;127163
coastal waters forecast
national weather service san juan pr
411 pm ast fri aug 21 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.
amz735-220915-
coastal waters of southern puerto rico out 10 nm-
411 pm ast fri aug 21 2026
...small craft should exercise caution...
.tonight...east winds 15 to 20 knots, diminishing to 10 to 15 knots
late this evening and overnight. seas 3 to 4 feet, occasionally to
5 feet. wave detail: east 4 feet at 7 seconds. isolated showers.
.saturday...east winds 10 to 15 knots with gusts up to 20 knots.
seas 3 to 4 feet, occasionally to 5 feet. wave detail: east 4 feet
at 6 seconds.
.saturday night...east winds 10 to 15 knots with gusts up to
20 knots. seas 3 to 4 feet, occasionally to 5 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
3 to 4 feet, occasionally to 5 feet. wave detail: east 3 feet at
6 seconds.
.sunday 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 3 feet
at 6 seconds.
.monday...east winds 10 to 15 knots with gusts up to 25 knots. seas
3 to 4 feet, occasionally to 5 feet. wave detail: east 3 feet at
6 seconds.
.monday night...east winds 10 to 15 knots with gusts up to 20 knots.
seas around 3 feet.
.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. seas 2 to 3 feet.
scattered showers.
.wednesday...east winds 10 to 15 knots. seas 2 to 4 feet,
occasionally to 5 feet. scattered showers in the morning.
.wednesday night...east winds 10 to 15 knots. seas 3 to 4 feet,
occasionally to 5 feet.
$$
(3/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/21/2026 4:11 PM America/Puerto_Rico.
Valid through 8/22/2026 5:15 AM America/Puerto_Rico.
fzca52 tjsj 212011
cwfsju
expires:202608220915;;127164
coastal waters forecast
national weather service san juan pr
411 pm ast fri aug 21 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.
amz741-220915-
mona passage southward to 17n-
411 pm ast fri aug 21 2026
...small craft should exercise caution...
.tonight...east winds 10 to 15 knots, increasing to 15 to 20 knots
late this evening and overnight. seas 4 to 6 feet, occasionally to
8 feet. wave detail: east 5 feet at 7 seconds. isolated showers
early this evening.
.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.
.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 7 seconds.
.sunday...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 night...east winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. seas 3 to 4 feet, occasionally to 5 feet.
wave detail: east 4 feet at 6 seconds.
.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. wave
detail: east 5 feet at 6 seconds. scattered showers in the
afternoon.
.monday night...east winds 10 to 15 knots with gusts up to 25 knots.
seas 3 to 4 feet, occasionally to 5 feet. scattered showers.
.tuesday...east winds 10 to 15 knots. seas 3 to 4 feet, occasionally
to 5 feet. scattered showers in the afternoon.
.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, increasing to 15 to 20 knots
in the afternoon. seas 3 to 4 feet, occasionally to 5 feet.
.wednesday night...east winds 15 to 20 knots. seas 3 to 5 feet,
occasionally to 6 feet.
$$
(4/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/21/2026 4:11 PM America/Puerto_Rico.
Valid through 8/22/2026 5:15 AM America/Puerto_Rico.
fzca52 tjsj 212011
cwfsju
expires:202608220915;;127165
coastal waters forecast
national weather service san juan pr
411 pm ast fri aug 21 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.
amz742-220915-
coastal waters of northwestern puerto rico out 10 nm-
411 pm ast fri aug 21 2026
.tonight...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 5 seconds and south 1 foot at 6 seconds.
.saturday...east winds 10 to 15 knots with gusts up to 20 knots,
becoming northeast 5 to 10 knots in the afternoon. seas 2 to 3 feet.
wave detail: northeast 3 feet at 6 seconds and south 1 foot 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: northeast
2 feet at 6 seconds and south 1 foot at 5 seconds.
.sunday...east winds 5 to 10 knots. seas 2 to 3 feet. wave detail:
northeast 2 feet at 6 seconds and south 1 foot at 5 seconds.
scattered showers in the afternoon.
.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 3 feet. wave
detail: northeast 2 feet at 7 seconds and south 1 foot at 5 seconds.
.monday...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 south 1 foot
at 5 seconds. numerous showers in the afternoon.
.monday night...east winds 10 to 15 knots with gusts up to 25 knots.
seas 2 to 3 feet. scattered showers.
.tuesday...east winds 5 to 10 knots, diminishing to around 5 knots
in the afternoon. seas 2 to 3 feet. numerous showers in the
afternoon.
.tuesday night...east winds around 5 knots. seas around 2 feet.
scattered showers.
.wednesday...northeast winds 5 to 10 knots. seas around 2 feet.
numerous showers in the afternoon.
.wednesday night...east winds 5 to 10 knots, increasing to 10 to
15 knots after midnight. seas 2 to 4 feet, occasionally to 5 feet.
$$
(5/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/21/2026 4:11 PM America/Puerto_Rico.
Valid through 8/22/2026 5:15 AM America/Puerto_Rico.
fzca52 tjsj 212011
cwfsju
expires:202608220915;;127166
coastal waters forecast
national weather service san juan pr
411 pm ast fri aug 21 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.
amz745-220915-
coastal waters of southwestern puerto rico out 10 nm-
411 pm ast fri aug 21 2026
.tonight...east winds 5 to 10 knots. seas around 2 feet. wave
detail: east 1 foot at 2 seconds and south 1 foot at 5 seconds.
.saturday...east winds 5 to 10 knots. seas around 2 feet. wave
detail: east 1 foot at 4 seconds and south 1 foot at 4 seconds.
scattered showers in the afternoon.
.saturday night...east winds 5 to 10 knots. seas around 2 feet. wave
detail: east 2 feet at 2 seconds and south 1 foot at 5 seconds.
.sunday...east winds 5 to 10 knots, becoming southeast 10 to
15 knots with gusts up to 20 knots in the afternoon. seas around
2 feet. wave detail: south 1 foot at 5 seconds.
.sunday night...east winds 10 to 15 knots with gusts up to 20 knots.
seas around 2 feet. wave detail: east 2 feet at 2 seconds and south
1 foot at 5 seconds.
.monday...east winds 5 to 10 knots, increasing to 10 to 15 knots
with gusts up to 20 knots in the afternoon. seas around 2 feet. wave
detail: southeast 1 foot at 3 seconds. numerous showers in the
afternoon.
.monday night...east winds 5 to 10 knots. seas around 2 feet.
.tuesday...east winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. seas around 2 feet. scattered showers in
the afternoon.
.tuesday night...east winds 5 to 10 knots. seas around 2 feet.
.wednesday...east winds 10 to 15 knots. seas around 2 feet.
scattered showers in the afternoon.
.wednesday night...east winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. seas 2 to 3 feet.
$$
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