fzca52 tjsj 182005
cwfsju
expires:202604190915;;598289

coastal waters forecast
national weather service san juan pr
405 pm ast sat apr 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-
405 pm ast sat apr 18 2026

.tonight...east winds 10 to 15 knots with gusts up to 25 knots. seas
4 to 5 feet, occasionally to 6 feet. wave detail: northeast 5 feet
at 8 seconds and northeast 2 feet at 13 seconds. isolated
thunderstorms. 
.sunday...east winds 10 to 15 knots with gusts up to 25 knots. seas
4 to 5 feet, occasionally to 6 feet. wave detail: northeast 4 feet
at 8 seconds and northeast 2 feet at 12 seconds. scattered showers. 
.sunday night...east winds 10 to 15 knots with gusts up to 25 knots.
seas 4 to 5 feet, occasionally to 6 feet. wave detail: east 5 feet
at 8 seconds and northeast 2 feet at 12 seconds. numerous showers,
mainly in the evening. 
.monday...east winds 10 to 15 knots with gusts up to 25 knots. seas
4 to 5 feet, occasionally to 6 feet. wave detail: northeast 4 feet
at 8 seconds and northeast 2 feet at 12 seconds. scattered showers. 
.monday night...east winds 10 to 15 knots with gusts up to 20 knots.
seas 4 to 5 feet, occasionally to 6 feet. wave detail: east 4 feet
at 8 seconds and northeast 2 feet at 11 seconds. scattered showers. 
.tuesday...east winds 5 to 10 knots. seas 3 to 4 feet, occasionally
to 5 feet. wave detail: east 4 feet at 8 seconds and northeast
2 feet at 11 seconds. scattered showers in the morning. 
.tuesday night...east winds 5 to 10 knots. seas 3 to 4 feet,
occasionally to 5 feet. 
.wednesday...east winds 5 to 10 knots. seas around 3 feet. 
.wednesday night...east winds 5 to 10 knots. seas 3 to 5 feet,
occasionally to 6 feet. 
.thursday...east winds 5 to 10 knots, becoming northeast 10 to
15 knots in the afternoon. seas 4 to 6 feet, occasionally to 8 feet.
scattered showers in the afternoon. 
.thursday night...east winds 10 to 15 knots, diminishing to 5 to
10 knots after midnight. seas around 5 feet, occasionally to 6 feet.
scattered showers. 

winds and seas higher in and near thunderstorms.

$$

fzca52 tjsj 182005
cwfsju
expires:202604190915;;598294

coastal waters forecast
national weather service san juan pr
405 pm ast sat apr 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-
405 pm ast sat apr 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. scattered showers this evening. isolated thunderstorms
late this evening and overnight. 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 4 feet at
6 seconds. numerous showers in the morning. 
.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 4 feet
at 6 seconds. scattered showers. 
.monday...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. 
.monday night...east winds 10 to 15 knots with gusts up to 20 knots.
seas 2 to 4 feet, occasionally to 5 feet. wave detail: east 4 feet
at 6 seconds. scattered showers. 
.tuesday...east winds 5 to 10 knots. seas 2 to 3 feet. wave detail:
east 3 feet at 6 seconds. 
.tuesday night...east winds 5 to 10 knots. seas 2 to 3 feet.
scattered showers. 
.wednesday...east winds 5 to 10 knots. seas 2 to 3 feet. 
.wednesday night...northeast winds 5 to 10 knots. seas around
2 feet. 
.thursday...east winds 5 to 10 knots. seas around 2 feet. 
.thursday night...east winds 5 to 10 knots. seas around 2 feet. 

winds and seas higher in and near thunderstorms.

$$

fzca52 tjsj 182005
cwfsju
expires:202604190915;;598296

coastal waters forecast
national weather service san juan pr
405 pm ast sat apr 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-
405 pm ast sat apr 18 2026

...small craft should exercise caution...

.tonight...east winds 15 to 20 knots, diminishing to 5 to 10 knots.
seas 2 to 4 feet, occasionally to 5 feet. wave detail: northeast
3 feet at 7 seconds and northeast 1 foot at 12 seconds. numerous
showers with isolated thunderstorms early this evening, then
isolated showers late this evening and overnight. 
.sunday...east winds 5 to 10 knots. seas 2 to 4 feet, occasionally
to 5 feet. wave detail: northeast 3 feet at 7 seconds and northeast
1 foot at 12 seconds. showers in the afternoon. 
.sunday night...east winds 10 to 15 knots with gusts up to 20 knots.
seas 2 to 4 feet, occasionally to 5 feet. wave detail: northeast
3 feet at 7 seconds and northeast 2 feet at 12 seconds. scattered
showers in the evening. 
.monday...east winds 5 to 10 knots. seas 2 to 4 feet, occasionally
to 5 feet. wave detail: northeast 3 feet at 6 seconds and northeast
2 feet at 12 seconds. scattered showers in the morning, then showers
in the afternoon. 
.monday night...east winds 5 to 10 knots. seas 2 to 3 feet. wave
detail: northeast 2 feet at 6 seconds and northeast 2 feet at
11 seconds. scattered showers. 
.tuesday...east winds 5 to 10 knots, becoming north in the
afternoon. seas 2 to 3 feet. wave detail: northeast 2 feet at
6 seconds and northeast 1 foot at 11 seconds. scattered showers in
the afternoon. 
.tuesday night...northeast winds 10 to 15 knots with gusts up to
20 knots. seas 2 to 3 feet. scattered showers. 
.wednesday...east winds around 10 knots, becoming northeast in the
afternoon. seas 2 to 3 feet. scattered showers in the afternoon. 
.wednesday night...east winds 10 to 15 knots. seas 2 to 4 feet,
occasionally to 5 feet. 
.thursday...northeast winds 5 to 10 knots. seas 3 to 5 feet,
occasionally to 6 feet. scattered showers in the afternoon. 
.thursday night...east winds 5 to 10 knots. seas 3 to 5 feet,
occasionally to 6 feet. scattered showers. 

winds and seas higher in and near thunderstorms.

$$

fzca52 tjsj 182005
cwfsju
expires:202604190915;;598297

coastal waters forecast
national weather service san juan pr
405 pm ast sat apr 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-
405 pm ast sat apr 18 2026

.tonight...east winds 5 to 10 knots. seas around 2 feet. wave
detail: southeast 2 feet at 6 seconds and north 1 foot at 7 seconds.
numerous showers with isolated thunderstorms early this evening,
then isolated showers late this evening and overnight. 
.sunday...east winds 5 to 10 knots. seas around 2 feet. wave detail:
southeast 2 feet at 6 seconds and north 1 foot at 7 seconds.
scattered showers in the afternoon. 
.sunday night...east winds 5 to 10 knots. seas around 2 feet. wave
detail: southeast 2 feet at 6 seconds and north 1 foot at 7 seconds.
numerous showers in the evening. 
.monday...east winds around 5 knots, becoming southeast in the
afternoon. seas around 2 feet. wave detail: southeast 2 feet at
6 seconds and north 1 foot at 7 seconds. scattered showers. 
.monday night...east winds 5 to 10 knots. seas around 2 feet. wave
detail: southeast 2 feet at 6 seconds and north 1 foot at 7 seconds.
numerous showers. 
.tuesday...east winds around 5 knots, becoming southeast in the
afternoon. seas around 2 feet. wave detail: southeast 1 foot at
6 seconds and north 1 foot at 6 seconds. scattered showers in the
afternoon. 
.tuesday night...northeast winds 10 to 15 knots with gusts up to
20 knots, becoming east 5 to 10 knots after midnight. seas around
2 feet. scattered showers. 
.wednesday...east winds 5 to 10 knots, becoming south in the
afternoon. seas around 2 feet. scattered showers in the afternoon. 
.wednesday night...east winds 5 to 10 knots. seas around 2 feet. 
.thursday...southeast winds around 5 knots. seas 2 to 3 feet. 
.thursday night...east winds 5 to 10 knots. seas 2 to 4 feet,
occasionally to 5 feet. 

winds and seas higher in and near thunderstorms.

$$