Tehuantepec Forecast

December 12, 2025, 3:01 pm (UTC: -05:00)
Subject: Tehuantepec Forecast

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This forecast has not been reviewed. It was generated from an automatic model.

WARNINGS
.NONE.

.WITHIN 16N94W TO 16N96W TO 13N96W TO 12N96W TO 14N94W TO
16N94W...INCLUDING THE GULF OF TEHUANTEPEC... N WINDS 20 TO 25
KT. SEAS TO 2.5 M.
.30 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO
15N94W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC... N WINDS
20 TO 25 KT. SEAS LESS THAN 2.5 M.
.48 HOUR FORECAST WITHIN 16N94W TO 16N96W TO 14N96W TO 14N95W TO
14N94W TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC... N TO NE
WINDS 20 TO 30 KT. SEAS LESS THAN 2.5 M.

FRESH TO STRONG GAP WINDS ARE OVER AND DOWNSTREAM THE GULF OF
TEHUANTEPEC, WITH ROUGH SEAS. ELSEWHERE, A SURFACE RIDGE EXTENDS
ACROSS THE OFFSHORE FORECAST WATERS OF BAJA CALIFORNIA. THE
PRESSURE GRADIENT BETWEEN THIS RIDGE AND A TROUGH OVER WESTERN
MEXICO IS SUPPORTING MODERATE WINDS IN THE CENTRAL AND SOUTHERN
GULF OF CALIFORNIA. LIGHT TO GENTLE WINDS AND MODERATE SEAS IN
LONG PERIOD MIXED SWELLS ARE NOTED ACROSS THE REMAINDER OF THE
MEXICAN OFFSHORE WATERS, WITH SLIGHT TO MODERATE SEAS IN THE GULF
OF CALIFORNIA AND NEARSHORE SW MEXICO.
FOR THE FORECAST, FRESH TO STRONG NORTHERLY GAP WINDS IN THE
GULF OF TEHUANTEPEC WILL DIMINISH TO MODERATE TO FRESH THROUGH
SAT. WINDS OVER THE TEHUANTEPEC REGION WILL STRENGTHEN AGAIN ON
SAT, POSSIBLY REACHING GALE-FORCE SUN NIGHT AND PREVAILING
THROUGH EARLY TUE. MAINLY GENTLE TO MODERATE WINDS AND MODERATE
SEAS WILL PREVAIL ELSEWHERE.

FOR THE FORECAST, GENTLE WINDS WILL PREVAIL N OF THE MONSOON
TROUGH OVER THE NEXT SEVERAL DAYS, EXCEPT PULSING FRESH TO STRONG
IN THE GULF OF PAPAGAYO. MODERATE N WINDS WILL PULSE IN THE GULF
OF PANAMA THROUGH EARLY NEXT WEEK. GENTLE TO MODERATE WINDS WILL
PREVAIL S OF MONSOON TROUGH. MODERATE SEAS IN MIXED SW AND NW
SWELL ARE EXPECTED OVER THE REGIONAL WATERS THROUGH THE WEEKEND
AND INTO EARLY NEXT WEEK. SEAS MAY BUILD OFFSHORE GUATEMALA BY
EARLY NEXT WEEK DUE TO A POSSIBLE GULF OF TEHUANTEPEC GAP WIND
EVENT.

SHORT-TERM TEHUANTEPEC
TODAY - NNW 9-11, Seas SSW 2.7-3.7 ft @ 12sec
TONITE - NNW 13-16, Seas SSW 1.3-2.9 ft @ 12sec
SATURDAY - NNW 17-21, Seas SW 1.1-3 ft @ 17sec
SATURDAY NIGHT - NNW 9-11, Seas SSW 2.7-3.7 ft @ 12sec

LONG-TERM TEHUANTEPEC
SUNDAY - N 20-25, Seas NNW 3.9-4.8 ft @ 5sec
MONDAY - N 25-31, Seas NNW 12-12.2 ft @ 8sec
TUESDAY - N 25-31, Seas NNW 10.8-11 ft @ 8sec
WEDNESDAY - NNW 18-23, Seas NNW 5.7-6.1 ft @ 6sec
THURSDAY - NNW 14-18, Seas N/A ?-? ft @ ?