Mazatlan to Banderas Bay Forecast
December 28, 2025, 3:02 am (UTC: -05:00)
Subject: Mazatlan to Banderas Bay Forecast
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This forecast has not been reviewed. It was generated from an automatic model.
WARNINGS
.NONE.
A 1032 MB HIGH PRESSURE SYSTEM CENTERED WELL NORTH OF THE
AREA NEAR 41N133W HAS AN ASSOCIATED RIDGE THAT EXTENDS
SOUTHWARD TO NEAR 20N AND WEST OF THE REVILLAGIGEDO ISLANDS.
ITS RELATED GRADIENT IS ALLOWING FOR FRESH NORTH TO NORTHEAST
WINDS TO EXIST ACROSS THE OFFSHORE WATERS OF BAJA CALIFORNIA. A
DECAYING NORTHWEST SWELL IS PROVIDING FOR SEAS OF 8 TO 12 FT
NORTH OF PUNTA EUGENIA AND 6 TO 9 FT IN NORTHWEST SWELL SOUTH OF
PUNTA EUGENIA. MODERATE TO LOCALLY FRESH NORTHWEST WINDS AND
SLIGHT TO MODERATE SEAS ARE FOUND IN THE GULF OF CALIFORNIA.
MEANWHILE, WINDS IN THE GULF OF TEHUANTEPEC HAVE DIMINISH BELOW
STRONG FORCE AND CURRENTLY, MODERATE TO FRESH NORTHERLY WINDS
PREVAIL. SEAS OVER THESE WATERS ARE 4 TO 6 FT. ELSEWHERE,
MODERATE OR WEAKER WINDS AND SLIGHT TO MODERATE SEAS PREVAIL.
FOR THE FORECAST, NORTHWEST SWELL PROPAGATING THROUGH THE
OFFSHORE WATERS OF THE BAJA CALIFORNIA PENINSULA WILL SLOWLY
SUBSIDE THROUGH EARLY MON. FRESH TO LOCALLY STRONG NORTHWEST
WINDS ARE LIKELY TO DEVELOP IN THE GULF OF CALIFORNIA SUN INTO
TUE AS HIGH PRESSURE STRENGTHENS ACROSS THE REGION. WEAK HIGH
PRESSURE WILL SUPPORT MODERATE TO FRESH N WINDS IN THE GULF OF
TEHUANTEPEC THROUGH SUN MORNING. LOOKING AHEAD, A STRONG COLD
FRONT WILL MOVE ACROSS THE GULF OF AMERICA MON INTO TUE. HIGH
PRESSURE BUILDING IN BEHIND THE FRONT WILL SUPPORT THE NEXT GAP
WIND EVENT IN THE GULF OF TEHUANTEPEC, REACHING GALE CONDITIONS
LATE MON NIGHT AND CONTINUING THROUGH WED NIGHT. WINDS MAY PEAK
AROUND 40 OR 45 KT LEADING ROUGH TO VERY ROUGH SEAS. CONDITIONS
WILL IMPROVE THU INTO FRI.
...SPECIAL FEATURES...CORRECTED
SIGNIFICANT SWELL AND DEVELOPING LOW PRESSURE: LARGE NORTHWEST
SWELL CONTINUES TO INDUCE ROUGH TO VERY ROUGH SEAS OVER THE
WATERS NORTH OF ABOUT 18N AND WEST OF ABOUT 116W, WITH SEAS
PEAKING TO AROUND 13 FT (4.M) FROM 21N TO 26N BETWEEN 120W AND
123W. WAVE PERIOD WITH THESE SEAS IS OF 12-14 SEC. ROUGH SEAS
EXTEND SOUTHWARD TO NEAR 10N AND EAST-NORTHEAST TO THE OFFSHORE
WATERS OF BAJA CALIFORNIA, INCLUDING SEBASTIAN VIZCAINO BAY. THE
SWELL WILL SLOWLY SUBSIDE THROUGH LATE SUN SOUTH OF 28N. ROUGH
SEAS OF 8 TO 12 FT ARE LIKELY TO PREVAIL INTO MON OVER THE WATERS
JUST WEST OF THE BAJA CALIFORNIA SUR OFFSHORE ZONES, ROUGHLY
FROM 15N TO 25N.
PLEASE READ THE SPECIAL FEATURES SECTION FOR DETAILS ON SIGNIFICANT
SWELL OVER THE WATERS WEST OF BAJA CALIFORNIA, AND FOR CONDITIONS
THAT WILL SOON BE ASSOCIATED WITH LOW PRESSURE IMPACTING MOST OF
THE NORTHERN WATERS AND A SECTION OF THE CENTRAL WATERS.
SHORT-TERM MAZATLAN TO BAHIA BANDERAS
TODAY - Not available yet
TONITE - Not available yet
MONDAY - Not available yet
MONDAY NIGHT - Not available yet
LONG-TERM MAZATLAN TO BAHIA BANDERAS
TUESDAY - NNW 5-6, Seas SSW 0.6-1.9 ft @ 12sec
WEDNESDAY - NNE 5-6, Seas SSW 0.6-1.9 ft @ 12sec
THURSDAY - NNW 13-16, Seas SW 1.8-2.5 ft @ 19sec
FRIDAY - NW 12-15, Seas N/A ?-? ft @ ?
SATURDAY - N 8-10, Seas N/A ?-? ft @ ?