Surf forecastStatisticsHistorical report

Bathtub Beach seasonal overview

Best Surf Season (October - March)

The North Atlantic's winter fury delivers the goods to Bathtub Beach from October through March. Frequent extratropical cyclones rolling off the US East Coast generate consistent, medium-to-large groundswells from the NE to E quadrants, with average wave heights sitting around 1.2m and periods often reaching the 8-second mark. When a low-pressure system stalls off the Carolinas, we can see pumping 1.5-2.5m waves with enough power to turn this normally mellow sandbar into a proper reef-like wall. The key is a W to SW offshore wind, which cleans up the faces and allows for long, rippable waves. With ideal wind conditions occurring 22-26% of the time, these months offer the most reliable window for quality surf.

Fair Surf Season (April, May, September)

During the shoulder months of April, May, and September, the Atlantic's pulse eases but still manages to produce rewarding sessions. Average swell height dips to around 1.0m, and periods hover near 7.5-8.2s. The dominant swell direction remains NE to ENE, but the fetch is often shorter and less organized than in winter. Offshore wind frequency drops to 18-22%, meaning you'll have to pick your days more carefully. Tropical systems can occasionally throw in a late-summer or early-fall swell, bringing sudden bursts of clean energy. These months reward the patient surfer who is willing to check the forecast and wait for a good window.

Low Surf Season (June - August)

Summer heat turns Bathtub Beach into a classic Florida flat spell. Average swell height bottoms out at a meager 0.6m, and average periods drop below 7 seconds, often resulting in choppy, short-period windswell. The dominant swell direction shifts to the E and ESE, but these waves barely tickle the sandbar. Onshore easterly winds prevail, with ideal offshore conditions occurring only 12-17% of the time – and even then, the fetch is pitiful. If you're desperate, a passing thunderstorm can briefly flip the wind offshore, but the resulting waves are weak and gutless. This is the time to travel or pick up a different hobby. However, if a hurricane wanders close enough, all bets are off – but that's a rare gamble.

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Conditions at Bathtub Beach in September

September: Transition Begins

September marks the first real sign of autumn's return. Average swell height jumps to 1.0m, and period climbs to 8.2s – the same as March. The swell direction shifts dramatically back to NE (31.6%) and ENE (30.3%), with a notable portion of waves in the 1-1.5m and 1.5-2m range. The storm track starts to reawaken, and the first cold fronts of the season can deliver clean, powerful swell. Offshore wind frequency is still low at 18%, but increasing instability in the atmosphere can produce more favorable wind shifts. This is a month of potential: when a tropical system merges with a front, Bathtub Beach can suddenly go from flat to firing.

Average Spot conditions at Bathtub Beach in September

Swell history for September

0 - 0.5
0.5 - 1
1 - 1.5
1.5 - 2.0
2.0 - 2.5
> 2.5 m

Wind history for September

0 - 10
10 - 20
20 - 30
30 - 40
40 - 50
> 50 km/h

Swell quality

Analyze the groundswell consistency at Bathtub Beach during September. Based on historical data, there is a % probability of groundswell occurring this month. The chart below provides a detailed breakdown of the average wave height distribution, offering deep insights into the swell quality and surf potential you can expect at Bathtub Beach for your next trip in September.

Ground swell

Ground swell by size

Wind conditions

Evaluate the wind and swell alignment at Bathtub Beach for September. Our analysis shows that favorable offshore or side-shore winds coincide with surfable swell approximately % of the time. The accompanying graph illustrates the average size distribution of waves during these optimal wind windows at Bathtub Beach.

Swell with good wind

Swell with good wind by size