(1/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/18/2026 4:29 PM America/Puerto_Rico.
Valid through 8/19/2026 5:15 AM America/Puerto_Rico.
fzca52 tjsj 182029
cwfsju
expires:202608190915;;954264
coastal waters forecast
national weather service san juan pr
429 pm ast tue aug 18 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.
amz712-190915-
coastal waters of northern puerto rico out 10 nm-
429 pm ast tue aug 18 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 this evening. scattered showers with
isolated thunderstorms after midnight.
.wednesday...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 8 seconds. scattered showers.
.wednesday night...southeast 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 5 seconds and east 3 feet at 8 seconds. scattered
showers.
.thursday...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 5 feet, occasionally to 6 feet. wave detail:
east 4 feet at 7 seconds.
.thursday 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 4 to 5 feet, occasionally to 6 feet. wave
detail: northeast 5 feet at 7 seconds.
.friday...east winds 10 to 15 knots, increasing to 15 to 20 knots in
the afternoon. gusts up to 30 knots. seas 4 to 5 feet, occasionally
to 6 feet. wave detail: northeast 5 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.
scattered showers.
.saturday...east winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. seas around 4 feet, occasionally to 5 feet.
scattered showers in the afternoon.
.saturday 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.
.sunday...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.
.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.
winds and seas higher in and near thunderstorms.
$$
(2/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/18/2026 4:29 PM America/Puerto_Rico.
Valid through 8/19/2026 5:15 AM America/Puerto_Rico.
fzca52 tjsj 182029
cwfsju
expires:202608190915;;954269
coastal waters forecast
national weather service san juan pr
429 pm ast tue aug 18 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.
amz735-190915-
coastal waters of southern puerto rico out 10 nm-
429 pm ast tue aug 18 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: east 3 feet at
5 seconds. isolated showers this evening, then scattered showers
with isolated thunderstorms after midnight.
.wednesday...southeast winds 10 to 15 knots with gusts up to
20 knots. seas 2 to 3 feet. wave detail: east 3 feet at 5 seconds
and east 1 foot at 8 seconds. scattered showers.
.wednesday night...east winds 10 to 15 knots with gusts up to
25 knots. seas 2 to 3 feet. wave detail: east 3 feet at 5 seconds
and east 1 foot at 8 seconds. scattered showers after midnight.
.thursday...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 5 seconds.
.thursday 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: east 4 feet at 6 seconds.
.friday...east winds 15 to 20 knots with gusts up to 25 knots. seas
3 to 5 feet, occasionally to 6 feet. wave detail: east 4 feet at
6 seconds.
.friday night...east winds 15 to 20 knots, diminishing to 10 to
15 knots after midnight. seas 3 to 5 feet, occasionally to 6 feet.
.saturday...east winds 10 to 15 knots. seas 3 to 4 feet,
occasionally to 5 feet.
.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.
scattered showers.
.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.
winds and seas higher in and near thunderstorms.
$$
(3/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/18/2026 4:29 PM America/Puerto_Rico.
Valid through 8/19/2026 5:15 AM America/Puerto_Rico.
fzca52 tjsj 182029
cwfsju
expires:202608190915;;954270
coastal waters forecast
national weather service san juan pr
429 pm ast tue aug 18 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.
amz741-190915-
mona passage southward to 17n-
429 pm ast tue aug 18 2026
.tonight...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 and northeast 1 foot at 9 seconds. isolated showers this
evening, then scattered showers with isolated thunderstorms after
midnight.
.wednesday...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. scattered showers in the morning.
.wednesday 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 4 feet at 5 seconds and northeast 1 foot at 8 seconds.
scattered showers after midnight.
.thursday...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. scattered showers in
the afternoon.
.thursday 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. scattered showers in the evening.
.friday...east winds 15 to 20 knots with gusts up to 25 knots. seas
4 to 5 feet, occasionally to 6 feet. wave detail: northeast 5 feet
at 7 seconds. scattered showers in the afternoon.
.friday night...east winds 15 to 20 knots with gusts up to 25 knots.
seas 4 to 6 feet, occasionally to 8 feet.
.saturday...east winds 15 to 20 knots. seas 4 to 6 feet,
occasionally to 8 feet. scattered showers in the afternoon.
.saturday night...east winds 10 to 15 knots, increasing to 15 to
20 knots after midnight. seas 4 to 5 feet, occasionally to 6 feet.
scattered showers.
.sunday...east winds 15 to 20 knots. 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.
winds and seas higher in and near thunderstorms.
$$
(4/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/18/2026 4:29 PM America/Puerto_Rico.
Valid through 8/19/2026 5:15 AM America/Puerto_Rico.
fzca52 tjsj 182029
cwfsju
expires:202608190915;;954271
coastal waters forecast
national weather service san juan pr
429 pm ast tue aug 18 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.
amz742-190915-
coastal waters of northwestern puerto rico out 10 nm-
429 pm ast tue aug 18 2026
.tonight...east winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots late. seas 2 to 3 feet. wave detail:
northeast 2 feet at 4 seconds and northeast 1 foot at 9 seconds.
.wednesday...east winds around 5 knots. seas around 2 feet. wave
detail: northeast 2 feet at 4 seconds and northeast 1 foot at
8 seconds. numerous showers in the afternoon.
.wednesday night...east winds around 5 knots, increasing to 5 to
10 knots after midnight. seas around 2 feet. wave detail: southeast
1 foot at 4 seconds and northeast 1 foot at 8 seconds. scattered
showers.
.thursday...east winds around 5 knots, becoming northeast with gusts
up to 20 knots in the afternoon. seas 2 to 3 feet. wave detail:
southeast 2 feet at 5 seconds and north 1 foot at 8 seconds.
scattered showers in the afternoon.
.thursday night...east winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. seas 2 to 4 feet, occasionally to 5 feet.
wave detail: northeast 3 feet at 7 seconds. scattered showers in the
evening.
.friday...northeast 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: southeast 3 feet at 7 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.
.saturday...east winds 5 to 10 knots, increasing to 10 to 15 knots
in the afternoon. seas 2 to 3 feet. numerous 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. scattered showers.
.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.
$$
(5/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/18/2026 4:29 PM America/Puerto_Rico.
Valid through 8/19/2026 5:15 AM America/Puerto_Rico.
fzca52 tjsj 182029
cwfsju
expires:202608190915;;954272
coastal waters forecast
national weather service san juan pr
429 pm ast tue aug 18 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.
amz745-190915-
coastal waters of southwestern puerto rico out 10 nm-
429 pm ast tue aug 18 2026
.tonight...east winds 5 to 10 knots. seas around 2 feet. wave
detail: north 1 foot at 4 seconds and south 1 foot at 5 seconds.
.wednesday...southeast winds 10 to 15 knots with gusts up to
20 knots. seas around 2 feet. wave detail: southeast 2 feet at
4 seconds and north 1 foot at 4 seconds. scattered showers in the
afternoon.
.wednesday night...east winds 10 to 15 knots with gusts up to
20 knots. seas around 2 feet. wave detail: southeast 2 feet at
4 seconds.
.thursday...east 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. scattered showers in the afternoon.
.thursday night...east winds 10 to 15 knots with gusts up to
25 knots. seas 2 to 3 feet. wave detail: southeast 2 feet at
6 seconds and north 1 foot at 7 seconds.
.friday...east winds 5 to 10 knots, becoming southeast in the
afternoon. seas 2 to 3 feet. wave detail: southeast 2 feet at
6 seconds.
.friday night...east winds 5 to 10 knots. seas 2 to 3 feet.
.saturday...east winds 10 to 15 knots, becoming southeast in the
afternoon. seas 2 to 3 feet. scattered showers in the afternoon.
.saturday night...east winds 10 to 15 knots. seas 2 to 3 feet.
.sunday...east winds 10 to 15 knots, becoming southeast 15 to
20 knots in the afternoon. 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.
$$
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