Mid-November Marine Outlook: Cold Fronts, Wind, and Boating Conditions

South Florida's dry season brings the first regular cold fronts of the fall. Here is what the post-frontal wind pattern means for boaters in Broward and Palm Beach.

The dry season starts now

November marks the start of South Florida's dry season, which runs roughly through April. With it come the first regular cold fronts of the fall, arriving every few days to about a week apart.

The National Weather Service's South Florida office tracks this seasonal shift in its dry season outlook, and the pattern is consistent from year to year: a day or two of building wind ahead of each front, then a shift, then a blustery day behind it.

The cold front cycle

The classic cycle starts with a day or two of building south and southeast winds ahead of the front. At passage, the wind shifts quickly. Behind the front, a blustery north to northeast wind day follows, with gusts along the coast that can reach 30 to 35 mph.

That post-frontal day is when the ocean side and the Gulf Stream are roughest, and it is the day most boaters plan around.

Post-frontal northeast winds

Behind each front, northeast winds are the dominant pattern, typically 10 to 15 knots, with periods of 15 to 19 knots that trigger small craft exercise caution conditions. Nearshore seas run 2 to 4 feet, occasionally 5 feet, and the Gulf Stream builds with post-frontal northerly swells that can reach 7 to 9 feet.

Bay and intracoastal waters turn choppy rather than rough, which is why inshore boating stays workable on most post-frontal days.

NWS Miami: marine forecasts and warnings

Water temperatures are cooling

November water temperatures in the region average about 76 to 80 degrees, trending toward the low to mid 70s by late in the month. Cooler water changes how fast you should respond to an overboard situation, and it matters for anyone planning extended time on the water.

It also marks the start of manatee season, when manatees move into warmer canals and marinas, and slow speed zones take effect in Broward and Palm Beach waters on November 15.

Planning around the wind

Check the marine forecast before every trip, not just the day before. Post-frontal wind events usually settle within a day or two, so a rough ocean forecast on Monday can be a calm one by Wednesday.

For fixed bridge crossings, pair the wind forecast with the tide table: lower water at low tide reduces clearance, and wind adds its own challenges to docking.

Getting help with your project

To request free resources about dredging, call (561) 299-1323 or email slselleck@gmail.com. Tell us about your dock, slip, or waterway and we will help you understand what it needs.

This content was created with AI assistance and reviewed for fair housing compliance.

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