000
FZPN28 KNHC 180925
OFFPZ8

Offshore Waters Forecast
NWS National Hurricane Center Miami, FL
225 AM PDT Fri Sep 18 2026

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.

PMZ101-182130-
Synopsis for the E Pacific within 250 nm of Central America,
Colombia, and within 750 nm of Ecuador
225 AM PDT Fri Sep 18 2026

.SYNOPSIS...The pressure gradient between a ridge north of the 
area and the eastern Pacific monsoon will support pulsing fresh 
to occasionally strong easterly winds and moderate to rough seas 
across the Papagayo region into Fri, then pulsing to moderate to 
fresh thereafter. Moderate winds and seas will prevail elsewhere.

$$

PMZ111-182130-
Guatemala and El Salvador to 250 nm offshore-
225 AM PDT Fri Sep 18 2026

.TODAY...E to SE winds 10 to 15 kt. Seas 4 to 6 ft. Period
19 seconds. Scattered showers and isolated tstms through the
day. 
.TONIGHT...NE winds 10 kt. Seas 4 to 6 ft in SW swell. Period
19 seconds. Scattered showers and isolated tstms through the
night. 
.SAT...NE winds 10 kt, shifting to SE to S in the afternoon.
Seas 3 to 5 ft. Period 19 seconds. Scattered showers and
isolated tstms through the day. 
.SAT NIGHT...S to SW winds 10 kt, shifting to W late.
Seas 3 to 5 ft. Period 18 seconds. Scattered showers and
isolated tstms through the night. 
.SUN...W to NW winds 10 kt. Seas 3 to 5 ft. Period 18 seconds. 
.SUN NIGHT...W to NW winds 10 kt. Seas 3 to 5 ft. Period
17 seconds. 
.MON...NW winds 10 kt. Seas 3 to 5 ft. Period 17 seconds. 
.MON NIGHT...W winds 10 kt. Seas 3 to 5 ft. Period 16 seconds. 
.TUE...W winds 10 kt. Seas 4 to 6 ft in SW swell. Period
16 seconds. 
.TUE NIGHT...W winds 10 kt. Seas 4 to 6 ft in SW swell. Period
15 seconds. 

$$

PMZ113-182130-
El Salvador to North Costa Rica including the Gulfs of Fonseca
and Papagayo-
225 AM PDT Fri Sep 18 2026

.TODAY...E winds 15 to 20 kt. Seas 6 to 8 ft in S to SW swell.
Period 16 seconds. Scattered showers and isolated tstms through
the day. 
.TONIGHT...Offshore Gulf of Papagayo, E winds 15 to 20 kt.
Elsewhere, S winds 10 kt, shifting to NW late. Seas
4 to 6 ft in S to SW swell. Period 19 seconds. Scattered showers
and isolated tstms through the night. 
.SAT...NW to N winds 10 to 15 kt. Seas 3 to 5 ft. Period
19 seconds. Scattered showers and isolated tstms through the
day. 
.SAT NIGHT...W to NW winds 10 kt. Seas 3 to 5 ft. Period
18 seconds. Scattered showers and isolated tstms through the
night. 
.SUN...NW to N winds 10 kt. Seas 3 to 5 ft. Period 18 seconds. 
.SUN NIGHT...W to NW winds 10 kt. Seas 3 to 5 ft. Period
17 seconds. 
.MON...NW to N winds 10 kt. Seas 3 to 5 ft. Period 17 seconds. 
.MON NIGHT...SW winds 10 kt. Seas 3 to 5 ft. Period 16 seconds. 
.TUE...SW winds 10 to 15 kt. Seas 5 to 7 ft in SW swell. Period
16 seconds. 
.TUE NIGHT...SW winds 10 to 15 kt. Seas 5 to 7 ft in SW swell.
Period 15 seconds. 

$$

PMZ115-182130-
North Costa Rica to West Panama to 250 nm offshore-
225 AM PDT Fri Sep 18 2026

.TODAY...SW to W winds 10 kt. Seas 3 to 5 ft. Period 13 seconds.
Scattered showers and isolated tstms through the day. 
.TONIGHT...SW to W winds 10 kt. Seas 3 to 5 ft. Period
19 seconds. Scattered showers and isolated tstms through the
night. 
.SAT...SW to W winds 10 kt. Seas 3 to 5 ft. Period 18 seconds.
Scattered showers and isolated tstms through the day. 
.SAT NIGHT...W winds 10 kt. Seas 3 to 5 ft. Period 18 seconds.
Scattered showers and isolated tstms. 
.SUN...SW to W winds 10 to 15 kt. Seas 3 to 5 ft. Period
16 seconds. 
.SUN NIGHT...SW to W winds 10 to 15 kt. Seas 3 to 5 ft. Period
18 seconds. 
.MON...SW winds 10 to 15 kt. Seas 3 to 5 ft. Period 17 seconds. 
.MON NIGHT...SW to W winds 10 to 15 kt. Seas 3 to 5 ft. Period
16 seconds. 
.TUE...SW to W winds 10 to 15 kt. Seas 5 to 7 ft in SW swell.
Period 16 seconds. 
.TUE NIGHT...SW to W winds 10 to 15 kt. Seas 5 to 7 ft in SW
swell. Period 15 seconds. 

$$

PMZ117-182130-
East Panama and Colombia including the Gulf of Panama-
225 AM PDT Fri Sep 18 2026

.TODAY...SW to W winds 10 to 15 kt. Seas 3 to 5 ft. Period
13 seconds. Scattered showers and isolated tstms through the
day. 
.TONIGHT...SW to W winds 10 kt. Seas 3 to 5 ft. Period
13 seconds. Scattered showers and isolated tstms.
.SAT...Gulf of Panama, variable winds less than 5 kt, becoming
SW 10 kt in the afternoon. Elsewhere, SW winds 10 kt. Seas 3 to
5 ft. Period 13 seconds. Scattered showers and isolated tstms
through the day. 
.SAT NIGHT...SW to W winds 10 to 15 kt. Seas 3 to 5 ft. Period
15 seconds. Scattered tstms. 
.SUN...SW winds 10 kt. Seas 3 to 5 ft. Period 15 seconds. 
.SUN NIGHT...SW winds 10 kt. Seas 3 to 5 ft. Period 18 seconds. 
.MON...SW winds 10 kt. Seas 3 to 5 ft. Period 17 seconds. 
.MON NIGHT...SW to W winds 10 kt. Seas 3 to 5 ft. Period
16 seconds. 
.TUE...SW winds 10 kt. Seas 2 to 4 ft. Period 16 seconds. 
.TUE NIGHT...SW to W winds 10 kt. Seas 3 to 5 ft. Period
15 seconds. 

$$

PMZ119-182130-
Ecuador including the Gulf of Guayaquil to 250 nm offshore-
225 AM PDT Fri Sep 18 2026

.TODAY...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
13 seconds. 
.TONIGHT...Gulf of Guayaquil, SW winds 10 kt in the evening,
becoming variable winds less than 5 kt. Elsewhere, S to SW winds
10 kt. Seas 4 to 6 ft in SW swell. Period 13 seconds. 
.SAT...Gulf of Guayaquil, variable winds less than 5 kt,
becoming W 10 kt in the afternoon. Elsewhere, S to SW winds
10 kt. Seas 3 to 5 ft. Period 12 seconds. 
.SAT NIGHT...SW winds 10 kt. Seas 3 to 5 ft. Period 19 seconds. 
.SUN...S to SW winds 10 kt. Seas 3 to 5 ft. Period 18 seconds. 
.SUN NIGHT...S to SW winds 10 kt. Seas 3 to 5 ft. Period
17 seconds. 
.MON...S to SW winds 10 kt. Seas 3 to 5 ft. Period 16 seconds. 
.MON NIGHT...SW winds 10 kt. Seas 3 to 5 ft. Period 16 seconds. 
.TUE...S to SW winds 10 to 15 kt. Seas 2 to 4 ft. Period
15 seconds. 
.TUE NIGHT...S to SW winds 10 to 15 kt. Seas 2 to 4 ft. Period
14 seconds. 

$$

PMZ121-182130-
Ecuador between 250 and 500 nm offshore-
225 AM PDT Fri Sep 18 2026

.TODAY...S winds 10 to 15 kt. Seas 4 to 6 ft. Period 13 seconds.
.TONIGHT...S winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 12 seconds. 
.SAT...S winds 10 kt. Seas 4 to 6 ft in S to SW swell. Period
19 seconds. 
.SAT NIGHT...S winds 10 kt. Seas 3 to 5 ft. Period 19 seconds. 
.SUN...S winds 10 to 15 kt. Seas 3 to 5 ft. Period 17 seconds. 
.SUN NIGHT...S winds 10 kt. Seas 3 to 5 ft. Period 17 seconds. 
.MON...S winds 10 kt. Seas 3 to 5 ft. Period 16 seconds. 
.MON NIGHT...S to SW winds 10 kt. Seas 3 to 5 ft. Period
15 seconds. 
.TUE...S to SW winds 10 to 15 kt. Seas 2 to 4 ft. Period
15 seconds. 
.TUE NIGHT...S to SW winds 10 to 15 kt. Seas 2 to 4 ft. Period
14 seconds. 

$$

PMZ123-182130-
Offshore Galapagos Islands-
225 AM PDT Fri Sep 18 2026

.TODAY...SE to S winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.TONIGHT...SE to S winds 10 to 15 kt. Seas 4 to 6 ft in S to SW
swell. Period 18 seconds. 
.SAT...SE to S winds 10 to 15 kt. Seas 4 to 6 ft. Period
19 seconds. 
.SAT NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft in S to SW
swell. Period 19 seconds. 
.SUN...SE to S winds 10 to 15 kt. Seas 4 to 6 ft. Period
13 seconds. 
.SUN NIGHT...S winds 10 kt. Seas 3 to 5 ft. Period 13 seconds. 
.MON...S winds 10 kt. Seas 3 to 5 ft. Period 13 seconds. 
.MON NIGHT...S to SW winds 10 kt. Seas 3 to 5 ft. Period
13 seconds. 
.TUE...S to SW winds 10 to 15 kt. Seas 3 to 5 ft. Period
12 seconds. 
.TUE NIGHT...S to SW winds 10 to 15 kt. Seas 3 to 5 ft. Period
12 seconds. 

$$

Forecaster Ramos