Long Beach - surf spot statistics

Best Surf Season (March - July)

The peak of the surf season at Long Beach unfolds during the Southern Hemisphere autumn and early winter. As the South Atlantic storm track intensifies, we see a marked increase in the average swell height, climbing to over 2.8m by June and July. The dominant swell direction remains from the SW quadrant, which, while not the ideal NW direction for this northwest-facing stretch, delivers powerful, long-period groundswells that wrap into the bay with significant energy. The wind regime becomes more cooperative during this window, with the percentage of offshore flow (from S, SSW, SW, and WSW) reaching its annual peak around 21% in May. This is when the South Atlantic high pressure ridges build firmly to the south, funnelling clean, offshore breezes across the Cape Peninsula. The combination of solid, punchy swell and smooth, groomed faces makes this the prime window for quality sessions, though the swell often comes in on the higher end of the spectrum, so intermediate to advanced skill levels will be rewarded during the pumping winter swells.

Fair Surf Season (August - October)

As spring approaches, the swell heights begin to gradually subside, averaging 2.4-2.7m, but the consistency remains high. The dominant SW swell continues to roll in, though the average period starts to lengthen towards the end of the period, hinting at distant storm sources. Wind conditions become a little less reliable, with the ideal offshore percentage declining from 17% in August to 14% in October. The South Atlantic high pressure weakens, allowing more variable winds and the occasional intrusion of the morning SE wind, which can be cross-shore to onshore for this stretch. However, this is a transition season where the occasional cold front passage can still set up a classic 24-hour window of solid, clean swell before the wind swings. It's a solid season for the dedicated surfer willing to work the forecast windows, with fewer crowds and still plenty of power in the water.

Low Surf Season (November - February)

During the summer months, the surf at Long Beach enters a distinct lull. The average swell height drops back to around 2.3m, and the wave periods shorten, indicating a mix of smaller groundswells and local windswell. The dominant swell direction remains SW, but the energy is reduced. The main challenge is the wind; the notorious summer SE wind (the 'Cape Doctor') dominates the wind roses, blowing consistently from the SE and SSE quadrants. These winds are not offshore for Long Beach; instead, they blow cross-shore or onshore, chopping up the wave face. The ideal offshore wind percentage plummets to just 12-14%, making clean, glassy conditions rare. When a light southwesterly or southerly flows in the early morning, it can still produce fun, rippable waves in the 1-1.5m range, but the window is small. Overall, this is the low-energy season best suited for beginners on smaller days or those content with groveling on weak swell. The winter months are where this spot truly comes alive.

January: The Summer Slump

January at Long Beach is characteristically a month of smaller, less consistent surf. The average swell height sits at 2.3m with a period of 11.1s – still offering occasional punchy sets, but often mixed with weaker energy. The swell direction is overwhelmingly from the SW and SSW quadrant, accounting for over 45% of the total swell distribution, predominantly in the 1.5-2.5m range. While these are not the optimal NW swell directions, they still produce rideable waves thanks to refraction. The bigger issue is the wind: the SE trade wind dominates, blowing from the SE and SSE over 50% of the time, often at speeds of 20-40kph. These winds are not offshore for this NW-facing beach; they create choppy, cross-onshore conditions that spoil the wave shape. Only 13% of the time do the ideal offshore sectors (S, SSW, SW, WSW) occur, and even then they are often light. The best chance for a clean session is a rare early morning light S to SW wind before the SE kicks in. Expect fun-sized, grovelly waves for the most part, with occasional solid sets if a mid-period SW groundswell lines up under light offshore flow.