000
FZPN28 KNHC 200710
OFFPZ8

Offshore Waters Forecast
NWS National Hurricane Center Miami, FL
1210 AM PDT Thu Aug 20 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.

PMZ101-201915-
Synopsis for the E Pacific within 250 nm of Central America,
Colombia, and within 750 nm of Ecuador
1210 AM PDT Thu Aug 20 2026

.SYNOPSIS...The pressure gradient between high pressure over the
northwestern Caribbean and relatively lower pressure over
Central America will lead to fresh NE to E gap winds pulsing to
strong winds over the Papagayo region each evening and night
through the early next week, resulting in rough seas at times.
Moderate to fresh winds extending well downwind of Papagayo will
impact the outer waters offshore of El Salvador and Guatemala
through at least early next week. Any lingering moderate to
locally fresh southerly winds south of the monsoon trough and
across the Galapagos waters will gradually diminish today.
Mainly moderate seas will prevail away from the Gulf of Papagayo
area through the next several days, dominated by long period
southerly swells. Seas may be locally rough south of the Equator
today. 

$$

PMZ111-201915-
Guatemala and El Salvador to 250 nm offshore-
1210 AM PDT Thu Aug 20 2026

.TODAY...E to SE winds 15 to 20 kt. Seas 6 to 8 ft in SE swell.
Period 14 seconds. 
.TONIGHT...SE winds 10 to 15 kt, shifting to NE to E late. Seas
5 to 7 ft in S swell. Period 13 seconds.
Scattered showers and isolated tstms through the night. 
.FRI...NE to E winds 10 to 15 kt. Seas 5 to 7 ft in S swell.
Period 12 seconds. Scattered showers and isolated tstms through
the day. 
.FRI NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft in S swell.
Period 12 seconds. Scattered showers and isolated tstms through
the night. 
.SAT...E winds 10 to 15 kt. Seas 5 to 7 ft in S swell. Period
12 seconds. 
.SAT NIGHT...NE winds 10 kt. Seas 4 to 6 ft in S swell. Period
13 seconds. 
.SUN...NE to E winds 10 kt. Seas 4 to 6 ft in S swell. Period
13 seconds. 
.SUN NIGHT...NE to E winds 10 to 15 kt. Seas 4 to 6 ft. Period
15 seconds. 
.MON...E winds 10 to 15 kt. Seas 4 to 6 ft. Period 17 seconds. 
.MON NIGHT...NE to E winds 10 to 15 kt. Seas 4 to 6 ft. Period
16 seconds. 

$$

PMZ113-201915-
El Salvador to North Costa Rica including the Gulfs of Fonseca
and Papagayo-
1210 AM PDT Thu Aug 20 2026

.TODAY...NE to E winds 20 to 25 kt Offshore Gulf of Papagayo,
and E 15 to 20 kt Elsewhere. Seas 6 to 8 ft in SE to S swell.
Period 14 seconds. Scattered showers and isolated tstms through
the day. 
.TONIGHT...E winds 15 to 20 kt, except 20 to 25 kt Offshore Gulf
of Papagayo. Seas 5 to 7 ft. Period 13 seconds. Scattered 
showers and isolated tstms through the night. 
.FRI...NE to E winds 20 to 25 kt Offshore Gulf of Papagayo, and
NE to E 15 to 20 kt Elsewhere. Seas 6 to 8 ft in S swell. Period
12 seconds. Scattered showers and isolated tstms through the
day. 
.FRI NIGHT...E to SE winds 15 to 20 kt, except NE to E 20 to 25
kt Offshore Gulf of Papagayo. Seas 5 to 7 ft. Period 11 seconds.
Scattered showers and isolated tstms through the night. 
.SAT...NE to E winds 15 to 20 kt. Seas 5 to 7 ft. Period
12 seconds. 
.SAT NIGHT...E winds 10 to 15 kt, except NE to E 20 to 25 kt 
Offshore Gulf of Papagayo. Seas 4 to 6 ft. Period 12 seconds. 
.SUN...NE to E winds 15 to 20 kt. Seas 5 to 7 ft. Period
11 seconds. 
.SUN NIGHT...NE to E winds 15 to 20 kt. Seas 4 to 6 ft, except
NE to E 20 to 25 kt Offshore Gulf of Papagayo. Period 14 
seconds. 
.MON...NE to E winds 15 to 20 kt. Seas 5 to 7 ft. Period
14 seconds. 
.MON NIGHT...E winds 15 to 20 kt, except NE to E 20 to 25 kt 
Offshore Gulf of Papagayo. Seas 4 to 6 ft. Period 13 seconds. 

$$

PMZ115-201915-
North Costa Rica to West Panama to 250 nm offshore-
1210 AM PDT Thu Aug 20 2026

.TODAY...Variable winds less than 5 kt, becoming SW 10 kt in the
afternoon. Seas 5 to 7 ft in S to SW swell. Period 13 seconds.
Scattered showers and isolated tstms through the day. 
.TONIGHT...Variable winds less than 5 kt. Seas 5 to 7 ft in S to
SW swell. Period 12 seconds. Scattered showers and isolated
tstms through the night. 
.FRI...Variable winds less than 5 kt. Seas 4 to 6 ft in S swell.
Period 11 seconds. Scattered showers and isolated tstms through
the day. 
.FRI NIGHT...Near the Azuero Peninsula, variable winds less than
5 kt. Elsewhere, variable winds less than 5 kt, becoming SW to W
10 kt late. Seas 4 to 6 ft in S swell. Period
11 seconds. Scattered showers and isolated tstms through the
night. 
.SAT...Variable winds less than 5 kt Near the Azuero Peninsula,
and SW 10 kt Elsewhere. Seas 3 to 5 ft. Period 10 seconds. 
.SAT NIGHT...Variable winds less than 5 kt Near the Azuero
Peninsula, and SW to W 10 kt Elsewhere. Seas 3 to 5 ft. Period
11 seconds. 
.SUN...Variable winds less than 5 kt. Seas 3 to 5 ft in S swell.
Period 11 seconds. 
.SUN NIGHT...Variable winds less than 5 kt. Seas 3 to 5 ft in S
swell. Period 14 seconds. 
.MON...Variable winds less than 5 kt. Seas 3 to 5 ft in S swell.
Period 13 seconds. 
.MON 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. 

$$

PMZ117-201915-
East Panama and Colombia including the Gulf of Panama-
1210 AM PDT Thu Aug 20 2026

.TODAY...SW to W winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 14 seconds. Scattered tstms through the day. 
.TONIGHT...SW to W winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 13 seconds. Scattered showers and isolated tstms through
the night. 
.FRI...Variable winds less than 5 kt Gulf of Panama, and SW to W
10 kt Elsewhere. Seas 4 to 6 ft in S to SW swell. Period
12 seconds. 
.FRI NIGHT...SW to W winds 10 kt. Seas 3 to 5 ft. Period
15 seconds. Scattered showers and isolated tstms through the
night. 
.SAT...Variable winds less than 5 kt Gulf of Panama, and SW
10 to 15 kt Elsewhere. Seas 3 to 5 ft. Period 12 seconds. 
.SAT NIGHT...SW to W winds 10 kt. Seas 3 to 5 ft. Period
13 seconds. 
.SUN...Variable winds less than 5 kt Gulf of Panama, and SW
10 kt Elsewhere. Seas 3 to 5 ft. Period 13 seconds.
.SUN NIGHT...W winds 10 kt. Seas 2 to 4 ft. Period 15 seconds. 
.MON...Variable winds less than 5 kt Gulf of Panama, and SW
10 kt Elsewhere. Seas 2 to 4 ft. Period 17 seconds.
.MON NIGHT...Variable winds less than 5 kt Gulf of Panama, and
SW 10 kt Elsewhere. Seas 3 to 5 ft. Period 16 seconds. 

$$

PMZ119-201915-
Ecuador including the Gulf of Guayaquil to 250 nm offshore-
1210 AM PDT Thu Aug 20 2026

.TODAY...S to SW winds 10 to 15 kt. Seas 6 to 8 ft in S to SW
swell. Period 12 seconds. 
.TONIGHT...S to SW winds 10 kt. Seas 5 to 7 ft in S to SW swell.
Period 11 seconds. 
.FRI...Gulf of Guayaquil, variable winds less than 5 kt,
becoming W 10 to 15 kt in the afternoon. Elsewhere, S to SW
winds 10 kt. Seas 4 to 6 ft in S swell. Period 13 seconds. 
.FRI NIGHT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft in S
swell. Period 14 seconds. 
.SAT...S to SW winds 10 to 15 kt. Seas 4 to 6 ft. Period
12 seconds. 
.SAT NIGHT...S to SW winds 10 kt. Seas 3 to 5 ft. Period
11 seconds. 
.SUN...S to SW winds 10 kt. Seas 3 to 5 ft. Period 14 seconds. 
.SUN NIGHT...S to SW winds 10 to 15 kt. Seas 3 to 5 ft. Period
17 seconds. 
.MON...S to SW winds 10 to 15 kt. Seas 3 to 5 ft. Period
16 seconds. 
.MON NIGHT...S to SW winds 10 to 15 kt. Seas 3 to 5 ft. Period
15 seconds. 

$$

PMZ121-201915-
Ecuador between 250 and 500 nm offshore-
1210 AM PDT Thu Aug 20 2026

.TODAY...SE to S winds 10 to 15 kt. Seas 6 to 8 ft in S swell.
Period 11 seconds. 
.TONIGHT...SE to S winds 10 kt. Seas 5 to 7 ft in S swell.
Period 11 seconds. 
.FRI...S winds 10 kt. Seas 4 to 6 ft in S swell. Period
10 seconds. 
.FRI NIGHT...S winds 10 to 15 kt. Seas 4 to 6 ft in S swell.
Period 10 seconds. 
.SAT...S winds 10 to 15 kt. Seas 4 to 6 ft. Period 10 seconds. 
.SAT NIGHT...S winds 10 kt. Seas 4 to 6 ft in SE to S swell.
Period 10 seconds. 
.SUN...S winds 10 kt. Seas 4 to 6 ft in SE to S swell. Period
13 seconds. 
.SUN NIGHT...S winds 10 kt. Seas 3 to 5 ft. Period 16 seconds. 
.MON...S winds 10 to 15 kt. Seas 3 to 5 ft. Period 16 seconds. 
.MON NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. Period
15 seconds. 

$$

PMZ123-201915-
Offshore Galapagos Islands-
1210 AM PDT Thu Aug 20 2026

.TODAY...SE winds 10 to 15 kt. Seas 6 to 8 ft in S swell. Period
11 seconds. 
.TONIGHT...SE to S winds 10 kt. Seas 6 to 8 ft in SE to S swell.
Period 11 seconds. 
.FRI...SE to S winds 10 kt. Seas 5 to 7 ft in SE to S swell.
Period 11 seconds. 
.FRI NIGHT...SE to S winds 10 kt. Seas 5 to 7 ft in SE to S
swell. Period 13 seconds. 
.SAT...SE to S winds 10 to 15 kt. Seas 5 to 7 ft in SE to S
swell. Period 11 seconds. 
.SAT NIGHT...SE to S winds 10 kt. Seas 4 to 6 ft in SE to S
swell. Period 13 seconds. 
.SUN...SE to S winds 10 kt. Seas 4 to 6 ft in SE to S swell.
Period 13 seconds. 
.SUN NIGHT...SE to S winds 10 kt. Seas 4 to 6 ft in SE to S
swell. Period 13 seconds. 
.MON...SE to S winds 10 to 15 kt. Seas 3 to 5 ft. Period
13 seconds. 
.MON NIGHT...S winds 10 to 15 kt. Seas 3 to 5 ft. Period
12 seconds. 

$$

Forecaster Lewitsky