Betty's Bay - surf spot statistics

Best Surf Season (May - August)

Winter roars in across the South Atlantic, firing long-period, powerful SW-to-SSW groundswells directly into Betty's Bay with relentless consistency. Average wave heights climb to a solid 2.5-2.8m and periods average 12.3-12.5s, delivering pumping, firing surf. The dominant high-pressure systems track north, allowing cold fronts to sweep the Cape, and the wind regime shifts favorably: offshore flow from the N, NW, and NNW quadrants picks up dramatically, clocking in over 40% ideal wind frequency. When a strong cold front passes, expect epic, heavy conditions under bluebird skies – this is the window for XL, charging sessions.

Fair Surf Season (March - April & September - October)

The transitional shoulder months offer a mix of solid swell and fickle wind. In autumn (March-April), the ocean still pulses with 2.2-2.3m averages and long periods (11.6-12.0s), but the offshore wind frequency improves from 22% to 31% as the seasonal shift begins. Spring (September-October) sees declining swell heights (2.3-2.6m) but still decent periods; ideal wind percentages drop from 32% to 24% as the SE trades strengthen. You can still score clean, fun, solid waves, but you'll need to pick your windows carefully – early mornings often deliver that glassy rippable groom.

Low Surf Season (November - February)

Summer settles in, and the wave energy wanes. Average swell heights hover around 2.1-2.3m with periods sitting at 11.1-11.3s – still punchy, rideable surf, but the real challenge is the wind. The thermal low over the interior drives persistent SE to ESE winds (onshore) that blow over 60% of the time, trashing wave faces with choppy, messy conditions. Ideal offshore wind drops to only 18-22%. While occasional SW groundswells arrive, they are often accompanied by the same onshore flow. For the dedicated surfer, a winter pattern break or early morning NW breeze can salvage a session, but overall this is a low-season grind.

August: Late-Winter Consistency – Still Pumping, Wind Shifts

August keeps the swell solid at 2.8m average and 12.3s period – still very powerful. SW and SW-dominated swells (combined 27.4% from SW+WSW) are the main players. The wind begins to shift slightly: NW and NNW still dominate (28.8%), but ideal frequency drops to 39% as the SE trades start to rebuild. You can still score pumping sessions, especially early in the month. Cold fronts continue to deliver, but the window of offshore flow may narrow compared to June/July. Get after it.