Cape St Francis - surf spot statistics

Best Surf Season (May - September)

The Southern Hemisphere winter brings the most consistent, powerful swell to Cape St Francis. Deep lows in the South Indian Ocean churn out long-period SW groundswells, ensuring average wave heights above 3m and periods well into the 12-second range. The predominant wind during these months is from the west and southwest, blowing directly offshore at this NE-facing beach. This combination delivers clean, lined-up waves that break with authority on the points. However, winter also packs a punch: strong frontal winds can whip up chop and spoil the surface, so patience is key to catching the lulls. Expect firing conditions when a high-pressure system parks over the interior and the offshore breeze goes glassy.

Fair Surf Season (April & October)

Spring and autumn serve as transition windows, offering a mix of conditions. Swell energy is still substantial, averaging 2.7-2.8m with 11-12 second periods, but the wind patterns become more erratic. April sees an increase in westerly winds (offshore) but also more north-easterly onshore flow. October brings a similar tug-of-war between lingering winter lows and building summer ridge winds. These months require close attention to forecasts; when the stars align, you can score uncrowded, clean surf in the 1.5-2.5m range before the winds shift.

Low Surf Season (November - March)

Summer and early autumn deliver a drop in both average wave height and period. April-level averages of 2.4-2.6m mask a heavier reliance on inconsistent S-SW pulses, while the dominant wind regime shifts to easterly and ENE trade winds that blow directly onshore. This creates bumpy, wind-affected surf, especially during the afternoon sea-breeze cycle. The percentage of ideal wind days falls to around 25-30%, and even when the swell is solid, the quality can be compromised. Still, early morning sessions with a light offshore (S to WSW) and a long-period residual can turn the summer slop into glassy, rippable waves – just don't expect the dependable power of winter.

May: Winter Swells Arrive in Force

May marks the true beginning of the Cape St Francis peak season. Average wave height climbs to 2.9m with a period of 12.2s – a full step up in power. The predominant SW direction (17.9%) now features a significant chunk of waves over 2.5m, indicating the arrival of deep-lower storms. SSW (13.7%) and S (6.7%) also feed consistent energy. Wind patterns shift markedly: onshore easterlies (ENE 11.1%, E 4.9%) wane, while offshore winds from W (24.7%) and WSW (14.1%) become more dominant. Ideal wind days remain at 28%, but the swell is so much cleaner and more powerful that the overall quality rises. Look for days when a high pressure system sits over the interior, delivering a steady W wind and a long-period SW swell – that is prime time for the Cape.