201 
FZPN28 KNHC 190159
OFFPZ8

Offshore Waters Forecast
NWS National Hurricane Center Miami, FL
659 PM PDT Mon May 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.

PMZ101-191400-
Synopsis for the E Pacific within 250 nm of Central America,
Colombia, and within 750 nm of Ecuador
659 PM PDT Mon May 18 2026

.SYNOPSIS...Fresh to occasionally strong winds will pulse across
the Gulf of Papagayo mainly in overnight and early morning hours
through Thu morning. Elsewhere, gentle to moderate winds along 
with moderate seas in southerly swell are expected through 
the end of the week. 

$$

PMZ111-191400-
Guatemala and El Salvador to 250 nm offshore-
659 PM PDT Mon May 18 2026

.TONIGHT...E winds 10 to 15 kt. Seas 5 to 7 ft in S to SW swell.
Period 13 seconds. 
.TUE...E to SE winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.TUE NIGHT...E winds 10 to 15 kt. Seas 4 to 6 ft in S to SW
swell. Period 17 seconds. Scattered showers and isolated tstms
through the night. 
.WED...E winds 10 to 15 kt. Seas 4 to 6 ft. Period 16 seconds. 
.WED NIGHT...E to SE winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.THU...NE winds 10 kt. Seas 3 to 5 ft. Period 14 seconds. 
.THU NIGHT...N winds 10 kt. Seas 3 to 5 ft. Period 14 seconds. 
.FRI...NE to E winds 10 kt. Seas 3 to 5 ft. Period 14 seconds. 
.FRI NIGHT...E winds 10 kt. Seas 3 to 5 ft. Period 14 seconds. 
.SAT...E winds 10 to 15 kt. Seas 3 to 5 ft. Period 14 seconds. 
.SAT NIGHT...E to SE winds 10 kt. Seas 3 to 5 ft. Period
15 seconds. 

$$

PMZ113-191400-
El Salvador to North Costa Rica including the Gulfs of Fonseca
and Papagayo-
659 PM PDT Mon May 18 2026

.TONIGHT...NE to E winds 20 to 25 kt Offshore Gulf of Papagayo,
and E to SE 15 to 20 kt Elsewhere. Seas 5 to 7 ft. Period
13 seconds. 
.TUE...E winds 15 to 20 kt. Seas 6 to 8 ft in S swell. Period
17 seconds. 
.TUE NIGHT...NE to E winds 20 to 25 kt Offshore Gulf of
Papagayo, and SE 15 to 20 kt Elsewhere. Seas 6 to 8 ft. Period
17 seconds. 
.WED...NE winds 15 to 20 kt. Seas 6 to 8 ft in S swell. Period
16 seconds. 
.WED NIGHT...E winds 20 to 25 kt Offshore Gulf of Papagayo, and
E 10 to 15 kt Elsewhere. Seas 4 to 6 ft. Period 15 seconds. 
.THU...NE to E winds 15 to 20 kt. Seas 5 to 7 ft. Period
14 seconds. 
.THU NIGHT...E to SE winds 10 kt. Seas 4 to 6 ft in S to SW
swell. Period 14 seconds. 
.FRI...E to SE winds 10 to 15 kt. Seas 3 to 5 ft. Period
14 seconds. 
.FRI NIGHT...SE to S winds 10 kt. Seas 3 to 5 ft. Period
14 seconds. 
.SAT...NE to E winds 15 to 20 kt Offshore Gulf of Papagayo, and
E 10 kt Elsewhere. Seas 3 to 5 ft. Period 14 seconds. 
.SAT NIGHT...E winds 15 to 20 kt Offshore Gulf of Papagayo, and
E to SE 10 kt Elsewhere. Seas 3 to 5 ft. Period 15 seconds. 

$$

PMZ115-191400-
North Costa Rica to West Panama to 250 nm offshore-
659 PM PDT Mon May 18 2026

.TONIGHT...Variable winds less than 5 kt. Seas 2 to 4 ft. Period
17 seconds. 
.TUE...Variable winds less than 5 kt. Seas 2 to 4 ft. Period
17 seconds. 
.TUE NIGHT...Near the Azuero Peninsula, variable winds less than
5 kt, becoming NE 10 kt late. Elsewhere, variable
winds less than 5 kt. Seas 2 to 4 ft. Period 17 seconds.
Scattered showers and isolated tstms through the night. 
.WED...Variable winds less than 5 kt, becoming SW to W 10 kt in
the afternoon. Seas 2 to 4 ft. Period 16 seconds. Scattered
showers and isolated tstms through the day. 
.WED NIGHT...Variable winds less than 5 kt Near the Azuero
Peninsula, and SW to W 10 kt Elsewhere. Seas 2 to 4 ft. Period
15 seconds. 
.THU...Variable winds less than 5 kt Near the Azuero Peninsula,
and S to SW 10 kt Elsewhere. Seas 2 to 4 ft. Period 14 seconds. 
.THU NIGHT...Variable winds less than 5 kt. Seas 3 to 5 ft in S
to SW swell. Period 14 seconds. 
.FRI...Variable winds less than 5 kt. Seas 3 to 5 ft in S to SW
swell. Period 14 seconds. 
.FRI NIGHT...Variable winds less than 5 kt. Seas 3 to 5 ft in S
swell. Period 13 seconds. 
.SAT...Variable winds less than 5 kt. Seas 3 to 5 ft in S swell.
Period 14 seconds. 
.SAT NIGHT...Variable winds less than 5 kt. Seas 3 to 5 ft in S
to SW swell. Period 14 seconds. 

$$

PMZ117-191400-
East Panama and Colombia including the Gulf of Panama-
659 PM PDT Mon May 18 2026

.TONIGHT...Gulf of Panama, E winds 10 kt, shifting to NW to N
late. Elsewhere, variable winds less than 5 kt. Seas
2 to 4 ft. Period 17 seconds. Scattered showers and isolated
tstms through the night. 
.TUE...S winds 10 kt, shifting to W in the afternoon. Seas 2 to
4 ft. Period 17 seconds. 
.TUE NIGHT...SW winds 10 kt. Seas 2 to 4 ft. Period 17 seconds.
Scattered showers and isolated tstms through the night. 
.WED...SW to W winds 10 kt. Seas 3 to 5 ft. Period 15 seconds. 
.WED NIGHT...SW to W winds 10 kt. Seas 3 to 5 ft. Period
15 seconds. 
.THU...SW winds 10 kt. Seas 3 to 5 ft. Period 14 seconds. 
.THU NIGHT...Variable winds less than 5 kt Gulf of Panama, and S
to SW 10 kt Elsewhere. Seas 3 to 5 ft. Period 14 seconds. 
.FRI...Variable winds less than 5 kt Gulf of Panama, and SW
10 kt Elsewhere. Seas 2 to 4 ft. Period 14 seconds.
.FRI NIGHT...W winds 10 kt. Seas 2 to 4 ft. Period 14 seconds. 
.SAT...SW to W winds 10 kt. Seas 2 to 4 ft. Period 13 seconds. 
.SAT NIGHT...SW winds 10 kt. Seas 2 to 4 ft. Period 15 seconds. 

$$

PMZ119-191400-
Ecuador including the Gulf of Guayaquil to 250 nm offshore-
659 PM PDT Mon May 18 2026

.TONIGHT...S winds 10 kt. Seas 3 to 5 ft. Period 17 seconds. 
.TUE...Gulf of Guayaquil, variable winds less than 5 kt,
becoming SW to W 10 kt in the afternoon. Elsewhere, S to SW
winds 10 to 15 kt. Seas 4 to 6 ft. Period 17 seconds. 
.TUE NIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft in SW
swell. Period 15 seconds. 
.WED...Gulf of Guayaquil, variable winds less than 5 kt,
becoming SW to W 10 kt in the afternoon. Elsewhere, S to SW
winds 10 kt. Seas 4 to 6 ft in SW swell. Period 15 seconds. 
.WED NIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
14 seconds. 
.THU...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
14 seconds. 
.THU NIGHT...S winds 10 kt. Seas 4 to 6 ft in S swell. Period
14 seconds. 
.FRI...S to SW winds 10 kt. Seas 3 to 5 ft. Period 14 seconds. 
.FRI NIGHT...S to SW winds 10 kt. Seas 3 to 5 ft. Period
13 seconds. 
.SAT...S winds 10 kt. Seas 3 to 5 ft. Period 14 seconds. 
.SAT NIGHT...S winds 10 kt. Seas 4 to 6 ft in SW swell. Period
16 seconds. 

$$

PMZ121-191400-
Ecuador between 250 and 500 nm offshore-
659 PM PDT Mon May 18 2026

.TONIGHT...SE to S winds 10 to 15 kt. Seas 3 to 5 ft. Period
17 seconds. 
.TUE...SE to S winds 10 to 15 kt. Seas 4 to 6 ft. Period
16 seconds. 
.TUE NIGHT...SE to S winds 10 to 15 kt. Seas 4 to 6 ft. Period
16 seconds. 
.WED...SE to S winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 15 seconds. 
.WED NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft. Period
14 seconds. 
.THU...SE to S winds 10 to 15 kt. Seas 4 to 6 ft. Period
14 seconds. 
.THU NIGHT...SE to S winds 10 kt. Seas 4 to 6 ft in SE to S
swell. Period 14 seconds. 
.FRI...SE to S winds 10 kt. Seas 4 to 6 ft in S swell. Period
14 seconds. 
.FRI NIGHT...SE to S winds 10 kt. Seas 3 to 5 ft. Period
14 seconds. 
.SAT...SE to S winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.SAT NIGHT...SE to S winds 10 kt. Seas 4 to 6 ft in SW swell.
Period 16 seconds. 

$$

PMZ123-191400-
Offshore Galapagos Islands-
659 PM PDT Mon May 18 2026

.TONIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. Period
17 seconds. 
.TUE...SE winds 10 to 15 kt. Seas 5 to 7 ft in SW to W swell.
Period 16 seconds. 
.TUE NIGHT...SE to S winds 10 to 15 kt. Seas 5 to 7 ft in SW to
W swell. Period 15 seconds. 
.WED...SE to S winds 10 to 15 kt. Seas 5 to 7 ft in SW to W
swell. Period 15 seconds. 
.WED NIGHT...SE to S winds 10 to 15 kt. Seas 5 to 7 ft in S to
SW swell. Period 13 seconds. 
.THU...SE to S winds 10 to 15 kt. Seas 5 to 7 ft in SE to S
swell. Period 13 seconds. 
.THU NIGHT...SE to S winds 10 kt. Seas 5 to 7 ft in SE to S
swell. Period 14 seconds. 
.FRI...SE to S winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 13 seconds. 
.FRI NIGHT...SE winds 10 to 15 kt. Seas 4 to 6 ft. Period
14 seconds. 
.SAT...SE winds 10 to 15 kt. Seas 5 to 7 ft in W to NW swell.
Period 15 seconds. 
.SAT NIGHT...SE winds 10 to 15 kt. Seas 5 to 7 ft in SW to W
swell. Period 14 seconds. 

$$

Forecaster Christensen