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.

July: The Wild Card

July sees the average swell height peaking at 2.9m with the longest average period of the year at 12.6s, indicating massive, long-period groundswells from the deep South Atlantic. The swell direction is heavily weighted towards the SW and WSW (28.2% combined), but we also see more W and even WNW components, which are the most favorable for this NW-facing stretch. The wind is ideal 19% of the time, similar to June. However, July also features the highest frequency of northwest wind (NW and NNW combined over 24%), which is the worst possible wind direction, often blowing strong and ruining the surf. This month is a classic 'make or break' scenario. When the offshore flow lines up with a big SW groundswell, the waves can be epic – thick, powerful, and capable of producing heavy barrels. But the onshore NW winds can just as easily destroy the surf for days. Patience and good forecasting are essential. It's a month for dedicated chargers who are willing to wait for the 20% window of perfection.