Still Bay seasonal overview
Best Surf Season (May - August)
The Southern Hemisphere winter unleashes its full fury upon Still Bay during these months, with the roaring forties pumping relentless SW and SSW swell directly into the SSE-facing beach. Average wave heights climb to a solid 2.0-2.2m, period lengthens to 12-12.4s, and the wind clock flips in our favor: high pressure cells over the interior trigger frequent light to moderate offshore breezes from NW and NNE, delivering ideal conditions over 47-58% of the time. This is the prime window for pumping, firing surf with long, clean walls that peel down the sandbanks.
Fair Surf Season (April & September)
Transition months offer a mixed bag. April and September still see strong SSW and SW swell averaging 2.0-2.2m and periods around 11.5-11.7s, but the offshore wind window narrows to roughly 35% ideal time. The wind patterns are more fickle: cold fronts brushing the coast bring intermittent onshore pulses, yet when the interior high settles in, the setup can produce rippable to solid waves with occasional long-period gems.
Low Surf Season (October - March)
Summer and early autumn are tough for consistent quality. Average swell height drops to 1.9-2.1m and period shortens to 10.6-11.2s, with the dominant swell from SSW still present but often accompanied by strong onshore winds from the ESE to S quadrant. The percentage of ideal offshore wind plummets to 13-22%, and the majority of days are marred by choppy, crumbly conditions. A few cold-front passages or cut-off lows can deliver brief windows of fun-sized waves, but overall expect a lot of groveling and wind-affected surf.
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Conditions at Still Bay in May
May: Winter Gains Momentum – Prime Season Kicks In
May is where Still Bay hits its stride. Average swell height reaches 2.1m, period lengthens to 12.1s, and ideal wind jumps to 52%. The swell mix shifts: SSW (29.7%) and SW (25%) dominate, with significant WSW (1.8%). Offshore winds from N, NW, and NNW are frequent (N 7.3%, NW 7.4%, NNW 7.1%), creating clean, firing conditions. Expect powerful, long-period waves in the 1.5-2.5m range, with occasional overhead sets. This is the beginning of the prime window.
Average Spot conditions at Still Bay in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Still Bay during May. 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 Still Bay for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Still Bay for May. 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 Still Bay.
