272
FZPN28 KNHC 190223
OFFPZ8

Offshore Waters Forecast
NWS National Hurricane Center Miami, FL
723 PM PDT Tue Aug 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.

PMZ101-191430-
Synopsis for the E Pacific within 250 nm of Central America,
Colombia, and within 750 nm of Ecuador
723 PM PDT Tue Aug 18 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 rest of the week and into the weekend, resulting in
rough seas. Moderate to fresh winds extending well downwind of
Papagayo will impact the outer waters offshore of El Salvador and
Guatemala at times. Moderate to fresh southerly winds south of
the monsoon trough and across the Galapagos waters will gradually
diminish through Thu. Moderate cross-equatorial SW swell moving
into the regional waters will continue to merge with larger SE
swell dominating the southern Pacific waters well south of the
Galapagos to produce rough seas 8 ft and greater S of 01N, and
moderate seas elsewhere through Thu before subsiding.

$$

PMZ111-191430-
Guatemala and El Salvador to 250 nm offshore-
723 PM PDT Tue Aug 18 2026

.TONIGHT...NE winds 10 kt, shifting to NE to E 15 to 20 kt
late. Seas 5 to 7 ft in SW swell. Period 15 seconds.
Scattered showers and isolated tstms through the night.
.WED...E winds 15 to 20 kt. Seas 6 to 8 ft in S swell. Period
15 seconds. Scattered showers and isolated tstms through the
day.
.WED NIGHT...E winds 15 to 20 kt. Seas 6 to 8 ft in SE swell.
Period 14 seconds. Scattered showers and isolated tstms through
the night.
.THU...E to SE winds 15 to 20 kt. Seas 5 to 7 ft. Period
14 seconds. Scattered showers and isolated tstms through the
day.
.THU NIGHT...SE winds 15 to 20 kt. Seas 5 to 7 ft. Period
11 seconds.
.FRI...NE to E winds 10 to 15 kt. Seas 5 to 7 ft in S swell.
Period 11 seconds.
.FRI NIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft in S swell.
Period 11 seconds.
.SAT...E winds 10 to 15 kt. Seas 5 to 7 ft in S swell. Period
12 seconds.
.SAT NIGHT...NE to E winds 10 to 15 kt. Seas 4 to 6 ft. Period
13 seconds.
.SUN...NE to E winds 10 to 15 kt. Seas 4 to 6 ft. Period
13 seconds.
.SUN NIGHT...NE to E winds 10 kt. Seas 4 to 6 ft in S swell.
Period 15 seconds.

$$

PMZ113-191430-
El Salvador to North Costa Rica including the Gulfs of Fonseca
and Papagayo-
723 PM PDT Tue Aug 18 2026

.TONIGHT...E winds 20 to 25 kt. Seas 6 to 8 ft in S swell.
Period 15 seconds. Scattered showers and isolated tstms through
the night.
.WED...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 S swell. Period
15 seconds. Scattered showers and isolated tstms through the
day.
.WED NIGHT...E winds 15 to 20 kt, except 20 to 25 kt Offshore
Gulf of Papagayo. Seas 5 to 7 ft. Period 14 seconds. Scattered
showers and isolated tstms through the night.
.THU...E to SE winds 15 to 20 kt. Seas 5 to 7 ft in SE to S
swell. Period 14 seconds. Scattered showers and isolated tstms
through the day.
.THU NIGHT...SE to S 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.
.FRI...NE winds 15 to 20 kt. Seas 5 to 7 ft. Period 11 seconds.
.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 10 seconds.
.SAT...E winds 15 to 20 kt. Seas 5 to 7 ft. Period 12 seconds.
.SAT NIGHT...E to SE winds 15 to 20 kt, except NE to E 20 to 30
kt Offshore Gulf of Papagayo. Seas 4 to 6 ft. Period 11 seconds.
.SUN...NE to E winds 25 kt Offshore Gulf of Papagayo, and NE
15 to 20 kt Elsewhere. Seas 5 to 7 ft. Period 11 seconds.
.SUN NIGHT...NE to E winds 20 to 30 kt. Seas 4 to 6 ft. Period
13 seconds.

$$

PMZ115-191430-
North Costa Rica to West Panama to 250 nm offshore-
723 PM PDT Tue Aug 18 2026

.TONIGHT...Variable winds less than 5 kt Near the Azuero
Peninsula, and S to SW 10 kt Elsewhere. Seas 3 to 5 ft. Period
15 seconds. Scattered showers and isolated tstms through the
night.
.WED...Variable winds less than 5 kt Near the Azuero Peninsula,
and S to SW 10 kt Elsewhere. Seas 4 to 6 ft in S to SW swell.
Period 15 seconds. Scattered showers and isolated tstms through
the day.
.WED 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.
.THU...Near the Azuero Peninsula, variable winds less than 5 kt.
Elsewhere, S to SW winds 10 kt in the morning, becoming variable
winds less than 5 kt. Seas 4 to 6 ft in S to SW swell. Period
13 seconds. Scattered showers and isolated tstms through the
day.
.THU NIGHT...Variable winds less than 5 kt. Seas 4 to 6 ft in S
to SW swell. Period 11 seconds.
.FRI...Variable winds less than 5 kt. Seas 4 to 6 ft in S swell.
Period 11 seconds.
.FRI NIGHT...Variable winds less than 5 kt. Seas 4 to 6 ft in S
swell. Period 10 seconds.
.SAT...Variable winds less than 5 kt. Seas 4 to 6 ft in S swell.
Period 10 seconds.
.SAT NIGHT...Variable winds less than 5 kt. Seas 3 to 5 ft in S
swell. 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 13 seconds.

$$

PMZ117-191430-
East Panama and Colombia including the Gulf of Panama-
723 PM PDT Tue Aug 18 2026

.TONIGHT...W winds 10 kt. Seas 3 to 5 ft. Period 15 seconds.
Scattered showers and isolated tstms through the night.
.WED...SW to W winds 10 to 15 kt. Seas 4 to 6 ft in SW swell.
Period 15 seconds.
.WED 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.
.THU...Variable winds less than 5 kt Gulf of Panama, and SW
10 kt Elsewhere. Seas 5 to 7 ft in S to SW swell. Period
14 seconds. Scattered showers and isolated tstms through the
day.
.THU NIGHT...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...W to NW winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 11 seconds.
.FRI NIGHT...W winds 10 kt. Seas 4 to 6 ft in S to SW swell.
Period 12 seconds.
.SAT...Variable winds less than 5 kt Gulf of Panama, and SW
10 kt Elsewhere. Seas 4 to 6 ft in S to SW swell. Period
12 seconds.
.SAT NIGHT...SW to W winds 10 kt. Seas 3 to 5 ft. Period
13 seconds.
.SUN...SW to W winds 10 kt. Seas 2 to 4 ft. Period 13 seconds.
.SUN NIGHT...W winds 10 kt. Seas 2 to 4 ft. Period 15 seconds.

$$

PMZ119-191430-
Ecuador including the Gulf of Guayaquil to 250 nm offshore-
723 PM PDT Tue Aug 18 2026

.TONIGHT...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 9 ft in S to SW
swell. Period 14 seconds.
.WED NIGHT...S to SW winds 10 to 15 kt. Seas 6 to 9 ft in S to
SW swell. Period 13 seconds.
.THU...S to SW winds 10 to 15 kt. Seas 6 to 8 ft in S to SW
swell. Period 12 seconds.
.THU NIGHT...S to SW winds 10 kt. Seas 5 to 7 ft in S to SW
swell. Period 10 seconds.
.FRI...S to SW winds 10 kt. Seas 4 to 6 ft in S swell. Period
11 seconds.
.FRI NIGHT...S to SW winds 10 kt. Seas 4 to 6 ft in S swell.
Period 12 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 kt. Seas 2 to 4 ft. Period
17 seconds.

$$

PMZ121-191430-
Ecuador between 250 and 500 nm offshore-
723 PM PDT Tue Aug 18 2026

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

$$

PMZ123-191430-
Offshore Galapagos Islands-
723 PM PDT Tue Aug 18 2026

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

$$

Forecaster Lewitsky