356
FZPN28 KNHC 160136
OFFPZ8

Offshore Waters Forecast
NWS National Hurricane Center Miami, FL
636 PM PDT Mon Sep 15 2025

Offshore Waters Forecast for the E Pacific within 250 nm of
Central America, Colombia, and within 750 nm of Ecuador

Seas given as significant wave height, which is the average
height of the highest 1/3 of the waves. Individual waves may be
more than twice the significant wave height.

PMZ101-161345-
Synopsis for the E Pacific within 250 nm of Central America,
Colombia, and within 750 nm of Ecuador
636 PM PDT Mon Sep 15 2025

.SYNOPSIS...Rough seas will prevail over the regional waters
through Tue morning before diminishing from south to north Tue
afternoon into Wed. Locally rough seas may persist offshore
offshore of Colombia through Costa Rica into early Thu. Moderate
to fresh NE gap winds will pulse in the Gulf of Papagayo through
midweek. Moderate to fresh S to SW winds are expected south of
the monsoon trough this week.

$$

PMZ111-161345-
Guatemala and El Salvador to 250 nm offshore-
636 PM PDT Mon Sep 15 2025

.TONIGHT...SE to S winds 10 kt. Seas 6 to 8 ft in S to SW swell.
Period 16 seconds. Scattered showers and isolated tstms through
the night.
.TUE...S winds 10 kt, shifting to SW to W in the afternoon.
Seas 6 to 8 ft in S to SW swell. Period 16 seconds. Scattered
showers and isolated tstms through the day.
.TUE NIGHT...W to NW winds 10 kt. Seas 6 to 8 ft in S to SW
swell. Period 15 seconds. Scattered showers and isolated tstms
through the night.
.WED...NW to N winds 10 kt, shifting to W to NW in the
afternoon. Seas 6 to 8 ft in S to SW swell. Period 14 seconds.
Scattered showers and isolated tstms through the day.
.WED NIGHT...W to NW winds 10 to 15 kt. Seas 5 to 7 ft in S to
SW swell. Period 14 seconds.
.THU...N to NE winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 13 seconds.
.THU NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
13 seconds.
.FRI...N winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period
13 seconds.
.FRI NIGHT...SE to S winds 10 to 15 kt. Seas 4 to 6 ft. Period
12 seconds.
.SAT...SE to S winds 10 to 15 kt. Seas 4 to 6 ft. Period
12 seconds.
.SAT NIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
13 seconds.

$$

PMZ113-161345-
El Salvador to North Costa Rica including the Gulfs of Fonseca
and Papagayo-
636 PM PDT Mon Sep 15 2025

.TONIGHT...Offshore Gulf of Papagayo, NE to E winds 15 to 20 kt.
Elsewhere, SW to W winds 10 kt, shifting to W to NW late. Seas
6 to 8 ft in S to SW swell. Period 16 seconds.
Scattered showers and isolated tstms through the night.
.TUE...NE to E winds 15 to 20 kt Offshore Gulf of Papagayo, and
NW to N 10 to 15 kt Elsewhere. Seas 6 to 8 ft in S to SW swell.
Period 16 seconds. Scattered showers and isolated tstms through
the day.
.TUE NIGHT...NW to N winds 10 to 15 kt. Seas 6 to 8 ft in S to
SW swell. Period 15 seconds. Scattered showers and isolated
tstms through the night.
.WED...NW to N winds 10 to 15 kt. Seas 5 to 7 ft in S to SW
swell. Period 14 seconds. Scattered showers and isolated tstms
through the day.
.WED NIGHT...S to SW winds 10 to 15 kt. Seas 5 to 7 ft in S to
SW swell. Period 14 seconds.
.THU...SE winds 10 kt Offshore Gulf of Papagayo, and S to SW
15 to 20 kt Elsewhere. Seas 4 to 6 ft. Period 13 seconds.
.THU NIGHT...SW winds 15 to 20 kt. Seas 5 to 7 ft. Period
13 seconds.
.FRI...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
13 seconds.
.FRI NIGHT...S to SW winds 10 to 15 kt. Seas 3 to 5 ft. Period
12 seconds.
.SAT...S to SW winds 10 to 15 kt. Seas 3 to 5 ft. Period
12 seconds.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. Period
13 seconds.

$$

PMZ115-161345-
North Costa Rica to West Panama to 250 nm offshore-
636 PM PDT Mon Sep 15 2025

.TONIGHT...W winds 10 to 15 kt. Seas 6 to 9 ft in S to SW swell.
Period 16 seconds. Scattered showers and isolated tstms through
the night.
.TUE...SW to W winds 10 to 15 kt. Seas 6 to 9 ft in S to SW
swell. Period 16 seconds. Scattered showers and isolated tstms
through the day.
.TUE NIGHT...SW to W winds 10 to 15 kt. Seas 6 to 9 ft in S to
SW swell. Period 15 seconds. Scattered tstms.
.WED...SW winds 15 to 20 kt. Seas 6 to 8 ft in S to SW swell.
Period 15 seconds. Scattered tstms.
.WED NIGHT...SW winds 10 to 15 kt. Seas 6 to 8 ft in S to SW
swell. Period 14 seconds.
.THU...SW winds 15 to 20 kt. Seas 6 to 8 ft in S to SW swell.
Period 13 seconds.
.THU NIGHT...SW to W winds 10 to 15 kt. Seas 5 to 7 ft in S to
SW swell. Period 13 seconds.
.FRI...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period
13 seconds.
.FRI NIGHT...SW winds 10 kt. Seas 3 to 5 ft. Period 12 seconds.
.SAT...SW winds 10 kt. Seas 3 to 5 ft. Period 12 seconds.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. Period
12 seconds.

$$

PMZ117-161345-
East Panama and Colombia including the Gulf of Panama-
636 PM PDT Mon Sep 15 2025

.TONIGHT...SW to W winds 10 to 15 kt. Seas 6 to 9 ft in SW
swell. Period 16 seconds. Numerous showers and scattered tstms
through the night.
.TUE...SW winds 10 to 15 kt. Seas 6 to 9 ft in SW swell. Period
16 seconds. Numerous showers and scattered tstms through the
day.
.TUE NIGHT...SW winds 10 to 15 kt. Seas 6 to 9 ft in SW swell.
Period 15 seconds. Scattered tstms through the night.
.WED...SW winds 10 to 15 kt. Seas 6 to 8 ft in SW swell. Period
15 seconds. Scattered tstms through the day.
.WED NIGHT...SW winds 10 to 15 kt. Seas 6 to 8 ft in SW swell.
Period 14 seconds.
.THU...SW winds 10 to 15 kt. Seas 6 to 8 ft in SW swell. Period
13 seconds.
.THU NIGHT...SW winds 10 kt. Seas 5 to 7 ft in SW swell. Period
13 seconds.
.FRI...SW winds 10 kt. Seas 4 to 6 ft in SW swell. Period
12 seconds.
.FRI NIGHT...SW to W winds 10 kt. Seas 3 to 5 ft. Period
12 seconds.
.SAT...S to SW winds 10 kt. Seas 3 to 5 ft. Period 12 seconds.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 3 to 5 ft. Period
12 seconds.

$$

PMZ119-161345-
Ecuador including the Gulf of Guayaquil to 250 nm offshore-
636 PM PDT Mon Sep 15 2025

.TONIGHT...S to SW winds 10 to 15 kt. Seas 6 to 9 ft in SW
swell. Period 16 seconds.
.TUE...S to SW winds 10 to 15 kt. Seas 6 to 9 ft in SW swell.
Period 15 seconds.
.TUE NIGHT...S to SW winds 10 to 15 kt. Seas 6 to 8 ft in S to
SW swell. Period 15 seconds.
.WED...S to SW winds 10 to 15 kt. Seas 6 to 8 ft in S to SW
swell. Period 14 seconds.
.WED NIGHT...S to SW winds 10 to 15 kt. Seas 5 to 7 ft in S to
SW swell. Period 13 seconds.
.THU...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
13 seconds.
.THU NIGHT...SW winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 12 seconds.
.FRI...S to SW winds 10 kt. Seas 3 to 5 ft. Period 12 seconds.
.FRI NIGHT...S to SW winds 10 kt. Seas 3 to 5 ft. Period
11 seconds.
.SAT...S to SW winds 10 kt. Seas 3 to 5 ft. Period 12 seconds.
.SAT NIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
12 seconds.

$$

PMZ121-161345-
Ecuador between 250 and 500 nm offshore-
636 PM PDT Mon Sep 15 2025

.TONIGHT...S to SW winds 10 kt. Seas 6 to 9 ft in S to SW swell.
Period 15 seconds.
.TUE...S winds 10 to 15 kt. Seas 6 to 9 ft in S to SW swell.
Period 15 seconds.
.TUE NIGHT...S winds 10 kt. Seas 6 to 8 ft in S to SW swell.
Period 15 seconds.
.WED...S winds 10 to 15 kt. Seas 6 to 8 ft in S to SW swell.
Period 14 seconds.
.WED NIGHT...S winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 13 seconds.
.THU...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
12 seconds.
.THU NIGHT...S to SW winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 12 seconds.
.FRI...S winds 10 kt. Seas 3 to 5 ft. Period 12 seconds.
.FRI NIGHT...S winds 10 kt. Seas 3 to 5 ft. Period 11 seconds.
.SAT...S winds 10 kt. Seas 3 to 5 ft. Period 12 seconds.
.SAT NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. Period
13 seconds.

$$

PMZ123-161345-
Offshore Galapagos Islands-
636 PM PDT Mon Sep 15 2025

.TONIGHT...S winds 10 kt. Seas 6 to 8 ft in S to SW swell.
Period 15 seconds.
.TUE...SE to S winds 10 to 15 kt. Seas 6 to 8 ft in S to SW
swell. Period 15 seconds.
.TUE NIGHT...S winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 15 seconds.
.WED...S winds 10 kt. Seas 5 to 7 ft in S to SW swell. Period
14 seconds.
.WED NIGHT...S winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 13 seconds.
.THU...S winds 10 to 15 kt. Seas 3 to 5 ft. Period 13 seconds.
.THU NIGHT...S winds 10 kt. Seas 3 to 5 ft. Period 13 seconds.
.FRI...SE to S winds 10 kt. Seas 3 to 5 ft. Period 12 seconds.
.FRI NIGHT...SE to S winds 10 kt. Seas 3 to 5 ft. Period
12 seconds.
.SAT...SE to S winds 10 kt. Seas 3 to 5 ft. Period 13 seconds.
.SAT NIGHT...SE to S winds 10 to 15 kt. Seas 3 to 5 ft. Period
12 seconds.

$$

Forecaster AL