(1/5)
Latest Coastal Waters Forecast by TJSJ
Issued 9/18/2026 3:43 AM America/Puerto_Rico.
Valid through 9/18/2026 6:00 PM America/Puerto_Rico.
fzca52 tjsj 180743
cwfsju
expires:202609182200;;644271
coastal waters forecast
national weather service san juan pr
343 am ast fri sep 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.
amz712-182200-
coastal waters of northern puerto rico out 10 nm-
343 am ast fri sep 18 2026
.today...east winds 5 to 10 knots with gusts up to 20 knots,
increasing to 10 to 15 knots with gusts up to 25 knots this
afternoon. seas 3 to 4 feet, occasionally to 5 feet. wave detail:
east 4 feet at 6 seconds and northeast 1 foot at 12 seconds.
isolated showers early this morning. scattered showers late this
morning, then isolated showers this afternoon.
.tonight...east winds 10 to 15 knots with gusts up to 25 knots,
diminishing to 5 to 10 knots after midnight. seas 3 to 4 feet,
occasionally to 5 feet. wave detail: east 4 feet at 6 seconds and
north 2 feet at 9 seconds. scattered showers after midnight.
.saturday...east winds 5 to 10 knots, increasing to 10 to 15 knots
with gusts up to 25 knots in the afternoon. seas 3 to 4 feet,
occasionally to 5 feet. wave detail: east 3 feet at 7 seconds and
north 2 feet at 8 seconds.
.saturday night...east winds 10 to 15 knots with gusts up to
20 knots, diminishing to 5 to 10 knots after midnight. seas 3 to
4 feet, occasionally to 5 feet. wave detail: northeast 3 feet at
7 seconds and northeast 1 foot at 11 seconds. scattered showers
after midnight.
.sunday...east winds 5 to 10 knots, increasing to 10 to 15 knots
with gusts up to 25 knots in the afternoon. seas around 3 feet. wave
detail: east 3 feet at 7 seconds and northeast 1 foot at 11 seconds.
scattered showers in the afternoon.
.sunday night...east winds 5 to 10 knots. seas around 3 feet. wave
detail: east 3 feet at 6 seconds. scattered showers.
.monday...east winds 10 to 15 knots. seas around 3 feet.
.monday night...east winds 10 to 15 knots, becoming southeast 5 to
10 knots after midnight. seas around 3 feet.
.tuesday...east winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. seas 2 to 3 feet.
.tuesday night...east winds 10 to 15 knots. seas around 3 feet.
$$
(2/5)
Latest Coastal Waters Forecast by TJSJ
Issued 9/18/2026 3:43 AM America/Puerto_Rico.
Valid through 9/18/2026 6:00 PM America/Puerto_Rico.
fzca52 tjsj 180743
cwfsju
expires:202609182200;;644276
coastal waters forecast
national weather service san juan pr
343 am ast fri sep 18 2026
puerto rico and the u.s. virgin islands waters
seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the average
highest 10 percent of the waves.
amz735-182200-
coastal waters of southern puerto rico out 10 nm-
343 am ast fri sep 18 2026
.today...east winds 10 to 15 knots with gusts up to 20 knots. seas
3 to 4 feet, occasionally to 5 feet. wave detail: east 4 feet at
7 seconds. isolated showers.
.tonight...east winds 10 to 15 knots with gusts up to 20 knots. seas
3 to 4 feet, occasionally to 5 feet. wave detail: east 4 feet at
6 seconds.
.saturday...east winds 5 to 10 knots, increasing to 10 to 15 knots
in the afternoon. seas around 3 feet. wave detail: east 3 feet at
6 seconds.
.saturday night...east winds 5 to 10 knots. seas 2 to 3 feet. wave
detail: east 3 feet at 6 seconds. scattered showers.
.sunday...east winds 10 to 15 knots with gusts up to 20 knots. seas
2 to 3 feet. wave detail: east 3 feet at 6 seconds.
.sunday night...east winds 5 to 10 knots. seas 2 to 3 feet. wave
detail: southeast 2 feet at 5 seconds. scattered showers after
midnight.
.monday...east winds 10 to 15 knots. seas 2 to 3 feet. scattered
showers in the morning.
.monday night...east winds 10 to 15 knots. seas 2 to 3 feet.
.tuesday...east winds 10 to 15 knots. seas around 3 feet.
.tuesday night...east winds 10 to 15 knots. seas around 3 feet.
scattered showers.
$$
(3/5)
Latest Coastal Waters Forecast by TJSJ
Issued 9/18/2026 3:43 AM America/Puerto_Rico.
Valid through 9/18/2026 6:00 PM America/Puerto_Rico.
fzca52 tjsj 180743
cwfsju
expires:202609182200;;644277
coastal waters forecast
national weather service san juan pr
343 am ast fri sep 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.
amz741-182200-
mona passage southward to 17n-
343 am ast fri sep 18 2026
.today...east winds 10 to 15 knots with gusts up to 25 knots. seas
4 to 5 feet, occasionally to 6 feet. wave detail: east 4 feet at
7 seconds. scattered showers early this morning. isolated showers
early this afternoon, then scattered showers late.
.tonight...east winds 10 to 15 knots with gusts up to 20 knots. seas
around 4 feet, occasionally to 5 feet. wave detail: east 4 feet at
7 seconds and north 2 feet at 9 seconds. scattered showers in the
evening.
.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 7 seconds and north 2 feet at 8 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 in the evening.
.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 20 knots.
seas around 3 feet. wave detail: southeast 3 feet at 6 seconds.
.monday...southeast winds 10 to 15 knots. seas around 3 feet.
scattered showers in the afternoon.
.monday night...east winds 10 to 15 knots. seas 3 to 4 feet,
occasionally to 5 feet.
.tuesday...east winds 10 to 15 knots. seas 3 to 4 feet, occasionally
to 5 feet.
.tuesday night...east winds 10 to 15 knots. seas 3 to 4 feet,
occasionally to 5 feet.
$$
(4/5)
Latest Coastal Waters Forecast by TJSJ
Issued 9/18/2026 3:43 AM America/Puerto_Rico.
Valid through 9/18/2026 6:00 PM America/Puerto_Rico.
fzca52 tjsj 180743
cwfsju
expires:202609182200;;644278
coastal waters forecast
national weather service san juan pr
343 am ast fri sep 18 2026
puerto rico and the u.s. virgin islands waters
seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the average
highest 10 percent of the waves.
amz742-182200-
coastal waters of northwestern puerto rico out 10 nm-
343 am ast fri sep 18 2026
.today...east winds around 5 knots, becoming northeast late. seas
2 to 3 feet. wave detail: east 2 feet at 6 seconds and north 1 foot
at 9 seconds. scattered showers early this afternoon. numerous
showers with isolated thunderstorms late.
.tonight...east winds 5 to 10 knots. seas 2 to 3 feet. wave detail:
east 2 feet at 6 seconds and north 2 feet at 9 seconds.
.saturday...northeast winds around 5 knots. seas 2 to 3 feet. wave
detail: northeast 3 feet at 7 seconds. scattered showers in the
afternoon.
.saturday night...east winds 5 to 10 knots. seas 2 to 3 feet. wave
detail: northeast 3 feet at 7 seconds. scattered showers in the
evening.
.sunday...east winds around 5 knots. seas 2 to 3 feet. wave detail:
northeast 3 feet at 7 seconds. scattered showers in the afternoon.
.sunday night...east winds around 5 knots. seas 2 to 3 feet. wave
detail: northeast 3 feet at 7 seconds. scattered showers in the
evening.
.monday...east winds 5 to 10 knots. seas around 2 feet. scattered
showers in the afternoon.
.monday night...east winds 5 to 10 knots. seas around 2 feet.
.tuesday...east winds 5 to 10 knots. seas 2 to 3 feet. scattered
showers in the afternoon.
.tuesday night...east winds 5 to 10 knots. seas 2 to 3 feet.
winds and seas higher in and near thunderstorms.
$$
(5/5)
Latest Coastal Waters Forecast by TJSJ
Issued 9/18/2026 3:43 AM America/Puerto_Rico.
Valid through 9/18/2026 6:00 PM America/Puerto_Rico.
fzca52 tjsj 180743
cwfsju
expires:202609182200;;644279
coastal waters forecast
national weather service san juan pr
343 am ast fri sep 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.
amz745-182200-
coastal waters of southwestern puerto rico out 10 nm-
343 am ast fri sep 18 2026
.today...southeast winds 10 to 15 knots, becoming east 5 to 10 knots
late. seas 2 to 3 feet. wave detail: east 3 feet at 6 seconds.
isolated showers early this afternoon. scattered showers late.
.tonight...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
6 seconds and north 1 foot at 9 seconds. scattered showers in the
evening.
.saturday...southeast winds 5 to 10 knots. seas 2 to 3 feet. wave
detail: southeast 2 feet at 6 seconds and north 2 feet at 8 seconds.
scattered showers in the afternoon.
.saturday night...east winds 5 to 10 knots. seas 2 to 3 feet. wave
detail: southeast 2 feet at 6 seconds and north 2 feet at 8 seconds.
scattered showers in the evening.
.sunday...east winds 10 to 15 knots, becoming southeast 5 to
10 knots in the afternoon. seas 2 to 3 feet. wave detail: southeast
2 feet at 6 seconds and north 1 foot at 8 seconds.
.sunday night...east winds 5 to 10 knots. seas 2 to 3 feet. wave
detail: southeast 2 feet at 5 seconds and north 1 foot at 7 seconds.
.monday...southeast winds 10 to 15 knots. seas around 2 feet.
scattered showers in the afternoon.
.monday night...east winds 5 to 10 knots. seas 2 to 3 feet.
.tuesday...southeast winds 10 to 15 knots. seas 2 to 3 feet.
.tuesday night...east winds 5 to 10 knots. seas 2 to 3 feet.
$$
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