Sea of Cortez ferry weather
Check waves, wind and tropical-weather influence across the Sea of Cortez today and tomorrow, with guidance for the long La Paz-Mazatlan and La Paz-Topolobampo ferry crossings.
The Gulf of California can have locally generated short seas inside the gulf while longer Pacific swell affects the southern entrance.
Sea of Cortez outlook
Waves to 1.6 m · 17 kt winds · gusts 22 kt
Normal ferry travel remains possible; some movement may be noticeable.Waves to 2.3 m · 15 kt winds · gusts 22 kt
Normal ferry travel remains possible; some movement may be noticeable.Currently looking calmer than today and tomorrow.
5-day trend · Lower confidenceSome movement may be noticeable, particularly on fast or smaller craft.
Sea of Cortez ferry weather changes from north to south
The Sea of Cortez, or Gulf of California, is a long narrow sea between the Baja California peninsula and mainland Mexico. The passenger ferry routes from La Paz cross the southern part of the gulf towards Topolobampo and Mazatlan.
The most useful local distinction is between wind-driven conditions inside the gulf and swell entering from the tropical eastern Pacific near the southern entrance. A forecast can therefore show short, locally generated waves in one section and longer-period swell in another.
Sea of Cortez wave forecast
Trace the entire route from La Paz across the gulf. These are long crossings, so the weather near Pichilingue can differ from the conditions several hours later closer to Sinaloa.
Short Gulf waves and long Pacific swell are not the same thing
NWS/NHC marine forecasts split the Gulf of California into northern, central and southern zones and also forecast the entrance separately. That matters for ferry passengers because those zones can carry different wind directions and wave periods at the same time.
Inside the gulf, fresh southerly or northerly winds can build relatively short-period seas. Near the entrance, longer south or southwest swell generated in the Pacific can become the dominant motion even when local winds are lighter.
Wind-driven Gulf sea
Shorter-period waves can feel sharper, particularly when the wind has been blowing along the length of the gulf for several hours.
Pacific swell
Longer-period swell from the south or southwest can enter the lower gulf and produce slower rolling or pitching.
Mixed conditions
A long La Paz crossing can encounter both patterns during the same sailing, so check more than one forecast point.
May 15 to November 30 deserves an extra tropical-weather check
The official Eastern Pacific hurricane season runs from May 15 through November 30. A tropical cyclone does not need to cross the ferry route directly to matter: systems south of Mexico can generate swell that reaches the entrance of the Gulf of California and can also change the regional wind pattern.
During this period, check the National Hurricane Center outlook in addition to the normal marine forecast, especially before an overnight crossing.
Tropical systems
Monitor Eastern Pacific tropical outlooks for storms and swell approaching the southern Gulf.
Southerly wind episodes
Fresh southerly flow can build short-period seas inside the Gulf of California.
Northerly episodes
Northerly winds can create a different sea direction and expose the crossing differently from summer southerlies.
Check the whole route
The La Paz routes are too long for one port forecast to represent the entire crossing.
La Paz ferry weather
Baja Ferries operates passenger and vehicle services across the Sea of Cortez from La Paz towards Topolobampo and Mazatlan. These are much longer sailings than a harbour or island shuttle, so route-wide weather matters more than the conditions at departure.
Wave period can explain why the ride feels different
A 1.5-metre short-period wind sea can feel busier than a longer-period swell of similar height, while a long Pacific swell may create slower rolling over many hours. On Sea of Cortez ferries, wave period is therefore especially useful alongside wave height.
Use the wave-height guide and the seasickness guide if the forecast is elevated.
Complete the Sea of Cortez weather check
Use FerryWeather for the passenger-facing outlook, then compare it with NHC/NWS offshore forecasts and Baja Ferries for the sailing itself.