501
FZPN28 KNHC 281556
OFFPZ8

Offshore Waters Forecast
NWS National Hurricane Center Miami, FL
856 AM PDT Sun Sep 28 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.

PMZ101-290400-
Synopsis for the E Pacific within 250 nm of Central America,
Colombia, and within 750 nm of Ecuador
856 AM PDT Sun Sep 28 2025

.SYNOPSIS...Mostly light to gentle winds will continue N of the
monsoon trough, with gentle to moderate SW to W winds S of the
monsoon trough, except locally fresh near active convection.
Southerly swell supporting locally rough seas SSE of the
Galapagos Islands will gradually decay tonight into Mon.
Moderate seas will prevail elsewhere through at least Thu. A
tropical wave will move across Central America into the early
part of the week, with scattered showers and gusty winds
accompanying it.

$$

PMZ111-290400-
Guatemala and El Salvador to 250 nm offshore-
856 AM PDT Sun Sep 28 2025

.TODAY...W to NW winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 16 seconds. Scattered showers and isolated tstms through
the day.
.TONIGHT...SW to W winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 16 seconds. Scattered showers and isolated tstms through
the night.
.MON...W to NW winds 10 kt, shifting to SW in the afternoon.
Seas 4 to 6 ft in S to SW swell. Period 15 seconds. Scattered
showers and isolated tstms through the day.
.MON NIGHT...SW winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 14 seconds. Scattered showers and isolated tstms through
the night.
.TUE...SW winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period
13 seconds.
.TUE NIGHT...SW winds 10 kt. Seas 3 to 5 ft. Period 12 seconds.
.WED...SE to S winds 10 kt. Seas 3 to 5 ft. Period 12 seconds.
.WED NIGHT...S winds 10 kt. Seas 3 to 5 ft. Period 11 seconds.
.THU...S winds 10 kt. Seas 3 to 5 ft. Period 11 seconds.
.THU NIGHT...S to SW winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 11 seconds.

$$

PMZ113-290400-
El Salvador to North Costa Rica including the Gulfs of Fonseca
and Papagayo-
856 AM PDT Sun Sep 28 2025

.TODAY...Offshore Gulf of Papagayo, variable winds less than
5 kt, becoming SW to W 10 kt in the afternoon. Elsewhere, W
winds 10 kt. Seas 4 to 6 ft in SW swell. Period 16 seconds.
Scattered showers and isolated tstms through the day.
.TONIGHT...SW to W winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 16 seconds. Scattered showers and isolated tstms.
.MON...SW winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period
15 seconds. Scattered showers and isolated tstms through the
day.
.MON NIGHT...SW to W winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 14 seconds. Scattered showers and isolated tstms
through the night.
.TUE...Variable winds less than 5 kt Offshore Gulf of Papagayo,
and SW to W 10 kt Elsewhere. Seas 4 to 6 ft in S to SW swell.
Period 13 seconds.
.TUE NIGHT...SW to W winds 10 kt. Seas 3 to 5 ft. Period
12 seconds.
.WED...Variable winds less than 5 kt Offshore Gulf of Papagayo,
and W 10 kt Elsewhere. Seas 3 to 5 ft. Period 12 seconds.
.WED NIGHT...SW winds 10 kt. Seas 3 to 5 ft. Period 11 seconds.
.THU...Variable winds less than 5 kt Offshore Gulf of Papagayo,
and SW 10 kt Elsewhere. Seas 3 to 5 ft. Period 11 seconds.
.THU NIGHT...SW winds 10 kt. Seas 4 to 6 ft in SW to W swell.
Period 12 seconds.

$$

PMZ115-290400-
North Costa Rica to West Panama to 250 nm offshore-
856 AM PDT Sun Sep 28 2025

.TODAY...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period
17 seconds. Scattered showers and isolated tstms through the
day.
.TONIGHT...W winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 16 seconds. Scattered showers and isolated tstms through
the night.
.MON...SW winds 10 kt. Seas 5 to 7 ft in S to SW swell. Period
15 seconds. Scattered showers and isolated tstms through the
day.
.MON NIGHT...SW to W winds 10 kt. Seas 5 to 7 ft in S to SW
swell. Period 14 seconds. Scattered showers and isolated tstms
through the night.
.TUE...SW to W winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 12 seconds.
.TUE NIGHT...W winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 12 seconds.
.WED...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period
11 seconds.
.WED NIGHT...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period
12 seconds.
.THU...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period
12 seconds.
.THU NIGHT...SW to W winds 10 to 15 kt. Seas 4 to 6 ft. Period
11 seconds.

$$

PMZ117-290400-
East Panama and Colombia including the Gulf of Panama-
856 AM PDT Sun Sep 28 2025

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

$$

PMZ119-290400-
Ecuador including the Gulf of Guayaquil to 250 nm offshore-
856 AM PDT Sun Sep 28 2025

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

$$

PMZ121-290400-
Ecuador between 250 and 500 nm offshore-
856 AM PDT Sun Sep 28 2025

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

$$

PMZ123-290400-
Offshore Galapagos Islands-
856 AM PDT Sun Sep 28 2025

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

$$

Forecaster Stripling