(1/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/31/2026 3:42 AM America/Puerto_Rico.
Valid through 8/31/2026 4:15 PM America/Puerto_Rico.
fzca52 tjsj 310742
cwfsju
expires:202608312015;;653201
coastal waters forecast
national weather service san juan pr
342 am ast mon aug 31 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.
amz712-312015-
coastal waters of northern puerto rico out 10 nm-
342 am ast mon aug 31 2026
...small craft advisory in effect until noon ast today...
...small craft should exercise caution after noon ast today...
.today...east winds 5 to 10 knots with gusts up to 20 knots. seas
5 to 7 feet, occasionally to 8 feet. wave detail: northeast 6 feet
at 10 seconds. isolated thunderstorms. scattered showers early this
morning, then showers late this morning and afternoon.
.tonight...east winds 5 to 10 knots. seas 4 to 5 feet, occasionally
to 6 feet. wave detail: east 5 feet at 10 seconds. scattered
showers.
.tuesday...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
8 seconds. scattered showers.
.tuesday 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: east 4 feet at
9 seconds. scattered showers.
.wednesday...east winds 10 to 15 knots with gusts up to 20 knots.
seas around 3 feet. wave detail: northeast 3 feet at 8 seconds.
scattered showers.
.wednesday 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 3 feet at 5 seconds and northeast 3 feet
at 8 seconds.
.thursday...east winds 5 to 10 knots, increasing to 10 to 15 knots
in the afternoon. seas 2 to 3 feet. scattered showers in the
afternoon.
.thursday night...east winds 10 to 15 knots. seas 2 to 3 feet.
.friday...east winds 10 to 15 knots. seas 2 to 3 feet. scattered
showers in the afternoon.
.friday night...east winds 10 to 15 knots. seas around 3 feet.
scattered showers.
winds and seas higher in and near thunderstorms.
$$
(2/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/31/2026 3:42 AM America/Puerto_Rico.
Valid through 8/31/2026 4:15 PM America/Puerto_Rico.
fzca52 tjsj 310742
cwfsju
expires:202608312015;;653206
coastal waters forecast
national weather service san juan pr
342 am ast mon aug 31 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.
amz735-312015-
coastal waters of southern puerto rico out 10 nm-
342 am ast mon aug 31 2026
...small craft should exercise caution...
.today...southeast winds 10 to 15 knots, becoming east 15 to
20 knots late this morning and early afternoon, then diminishing to
10 to 15 knots late. seas 3 to 5 feet, occasionally to 6 feet. wave
detail: southeast 4 feet at 5 seconds. isolated thunderstorms.
showers until late afternoon, then scattered showers late.
.tonight...east winds 10 to 15 knots with gusts up to 25 knots. seas
3 to 5 feet, occasionally to 6 feet. wave detail: southeast 4 feet
at 7 seconds and east 4 feet at 10 seconds. scattered showers.
.tuesday...east winds 10 to 15 knots with gusts up to 25 knots. seas
3 to 5 feet, occasionally to 6 feet. wave detail: southeast 3 feet
at 7 seconds and east 1 foot at 9 seconds.
.tuesday 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 3 feet at 7 seconds and east 3 feet at 8 seconds.
.wednesday...east winds 10 to 15 knots with gusts up to 20 knots.
seas around 3 feet. wave detail: east 3 feet at 7 seconds.
.wednesday night...east winds 10 to 15 knots with gusts up to
20 knots. seas 2 to 3 feet. wave detail: east 3 feet at 7 seconds.
.thursday...east winds 5 to 10 knots, increasing to 10 to 15 knots
in the afternoon. seas 2 to 3 feet.
.thursday night...east winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. seas 2 to 3 feet.
.friday...east winds 10 to 15 knots. seas 2 to 3 feet. scattered
showers in the afternoon.
.friday night...east winds 10 to 15 knots. seas 2 to 3 feet.
scattered showers.
winds and seas higher in and near thunderstorms.
$$
(3/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/31/2026 3:42 AM America/Puerto_Rico.
Valid through 8/31/2026 4:15 PM America/Puerto_Rico.
fzca52 tjsj 310742
cwfsju
expires:202608312015;;653207
coastal waters forecast
national weather service san juan pr
342 am ast mon aug 31 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.
amz741-312015-
mona passage southward to 17n-
342 am ast mon aug 31 2026
...small craft should exercise caution...
.today...southeast winds 15 to 20 knots with gusts up to 25 knots.
seas 4 to 5 feet, occasionally to 6 feet. wave detail: southeast
5 feet at 6 seconds and northeast 3 feet at 6 seconds. isolated
thunderstorms.
.tonight...east winds 15 to 20 knots, diminishing to 10 to 15 knots
after midnight. seas 5 to 6 feet, occasionally to 8 feet. wave
detail: southeast 5 feet at 6 seconds and northeast 2 feet at
9 seconds. scattered showers in the evening.
.tuesday...east winds 10 to 15 knots, increasing to 15 to 20 knots
in the afternoon. seas 4 to 6 feet, occasionally to 8 feet. wave
detail: southeast 5 feet at 6 seconds and northeast 2 feet at
10 seconds.
.tuesday night...east winds 10 to 15 knots with gusts up to
25 knots. seas 3 to 5 feet, occasionally to 6 feet. wave detail:
southeast 4 feet at 7 seconds and northeast 2 feet at 9 seconds.
scattered showers in the evening.
.wednesday...east winds 10 to 15 knots with gusts up to 20 knots.
seas 3 to 5 feet, occasionally to 6 feet. wave detail: east 4 feet
at 7 seconds.
.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:
east 4 feet at 6 seconds.
.thursday...east winds 10 to 15 knots. seas 3 to 4 feet,
occasionally to 5 feet. numerous showers in the afternoon.
.thursday night...east winds 10 to 15 knots. seas 3 to 4 feet,
occasionally to 5 feet.
.friday...east winds 10 to 15 knots. seas 2 to 4 feet, occasionally
to 5 feet.
.friday night...east winds 10 to 15 knots. seas 3 to 4 feet,
occasionally to 5 feet. scattered showers.
winds and seas higher in and near thunderstorms.
$$
(4/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/31/2026 3:42 AM America/Puerto_Rico.
Valid through 8/31/2026 4:15 PM America/Puerto_Rico.
fzca52 tjsj 310742
cwfsju
expires:202608312015;;653208
coastal waters forecast
national weather service san juan pr
342 am ast mon aug 31 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.
amz742-312015-
coastal waters of northwestern puerto rico out 10 nm-
342 am ast mon aug 31 2026
.today...southeast winds 10 to 15 knots with gusts up to 25 knots.
seas 3 to 5 feet, occasionally to 6 feet. wave detail: southeast
2 feet at 4 seconds. isolated showers early this morning, then
numerous showers with isolated thunderstorms late this morning and
afternoon.
.tonight...east winds 10 to 15 knots with gusts up to 20 knots,
diminishing to 5 to 10 knots after midnight. seas 2 to 4 feet,
occasionally to 5 feet. wave detail: northeast 4 feet at 9 seconds
and south 2 feet at 5 seconds.
.tuesday...east winds around 5 knots. seas 2 to 4 feet, occasionally
to 5 feet. wave detail: northeast 3 feet at 9 seconds and south
1 foot at 6 seconds. numerous showers in the afternoon.
.tuesday night...east winds 5 to 10 knots. seas 2 to 3 feet. wave
detail: northeast 2 feet at 9 seconds and south 1 foot at 6 seconds.
scattered showers in the evening.
.wednesday...east winds 5 to 10 knots, becoming northeast in the
afternoon. seas 2 to 3 feet. wave detail: northeast 2 feet at
6 seconds and south 1 foot at 6 seconds. numerous showers in the
afternoon.
.wednesday night...east winds 5 to 10 knots. seas around 2 feet.
wave detail: northeast 2 feet at 6 seconds and south 1 foot at
6 seconds.
.thursday...northeast winds 5 to 10 knots. seas around 2 feet.
numerous showers in the afternoon.
.thursday night...east winds 5 to 10 knots. seas around 2 feet.
.friday...east winds 5 to 10 knots. seas around 2 feet. numerous
showers in the afternoon.
.friday night...east winds 5 to 10 knots. seas around 2 feet.
scattered showers.
winds and seas higher in and near thunderstorms.
$$
(5/5)
Latest Coastal Waters Forecast by TJSJ
Issued 8/31/2026 3:42 AM America/Puerto_Rico.
Valid through 8/31/2026 4:15 PM America/Puerto_Rico.
fzca52 tjsj 310742
cwfsju
expires:202608312015;;653209
coastal waters forecast
national weather service san juan pr
342 am ast mon aug 31 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.
amz745-312015-
coastal waters of southwestern puerto rico out 10 nm-
342 am ast mon aug 31 2026
...small craft should exercise caution...
.today...southeast winds 15 to 20 knots with gusts up to 25 knots.
seas 2 to 3 feet. wave detail: southeast 3 feet at 4 seconds and
north 1 foot at 5 seconds. showers this morning. isolated
thunderstorms. scattered showers this afternoon.
.tonight...east winds 10 to 15 knots with gusts up to 25 knots. seas
2 to 3 feet. wave detail: southeast 3 feet at 5 seconds and north
1 foot at 6 seconds. scattered showers.
.tuesday...east winds 5 to 10 knots, increasing to 10 to 15 knots
with gusts up to 20 knots in the afternoon. seas 2 to 3 feet. wave
detail: east 2 feet at 6 seconds and north 1 foot at 5 seconds.
.tuesday night...east winds 5 to 10 knots. seas 2 to 3 feet. wave
detail: southeast 2 feet at 6 seconds and north 1 foot at 5 seconds.
.wednesday...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 2 feet at 6 seconds and north 1 foot at
5 seconds. scattered showers in the afternoon.
.wednesday night...east winds 5 to 10 knots. seas around 2 feet.
wave detail: southeast 2 feet at 6 seconds and north 1 foot at
4 seconds.
.thursday...east winds 5 to 10 knots. seas around 2 feet. scattered
showers in the afternoon.
.thursday night...east winds 5 to 10 knots. seas around 2 feet.
.friday...east winds 5 to 10 knots, becoming southeast 10 to
15 knots in the afternoon. seas around 2 feet.
.friday night...east winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. seas around 2 feet. scattered showers.
winds and seas higher in and near thunderstorms.
$$
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