Fence seasonal overview
Best Surf Season (October - March)
The South African summer months from October through March offer the highest chance of combining favorable east-northeast swell with clean offshore winds. While the dominant swell direction at Fence is from the south-southwest (a direction that wraps poorly into this northeast-facing beach), the slight uptick in east-northeast pulses during this period provides the most surfable conditions. The synoptic pattern is driven by a semi-permanent South Atlantic high that pumps southeasterly trade winds, but cold fronts tracking west to east often bring a welcome shift to southwest-west winds that blow directly offshore. When these fronts align with a remnant east swell or a local sea breeze, the setup can produce punchy, rippable waves in the 1-1.5m range. However, with only about a quarter of the time offering ideal wind and swell alignment, patience is required.
Fair Surf Season (April & September)
April and September are transitional months where the swell spectrum begins to shift. In April, the last of the east-northeast swells can still deliver fun waves, especially if southerly winds remain light. September sees a resurgence of south swells as winter wanes, but occasional east pulses creep back in. Wind patterns are more variable, with a higher frequency of onshore easterlies that spoil the conditions. Still, the decreasing wind speeds and improving swell periods make these months a gamble worth taking for the dedicated surfer.
Low Surf Season (May - August)
The southern hemisphere winter from May to August is the most challenging time at Fence. The swell window is dominated by powerful, long-period south to southwest swells generated by intense mid-latitude storms, but these waves arrive from angles that are nearly opposite to the beach's northeast exposure. As a result, most days are flat — the beach is effectively shadowed from the most energetic swell. When any wave energy does wrap in, it is often accompanied by strong onshore easterlies that accompany the high-pressure cells. The few surfable days come from rare east-northeast swells that manage to sneak in, or from a sudden wind shift to offshore with a passing front. The average wave height statistics of 2.2-2.4m are misleading because they include significant south swell that never reaches the shore. In reality, surfable waves are small and infrequent.
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Conditions at Fence in December
December: Summer Stoke
December closes the year with an average swell height of 2.0m and period of 10.7s. East swell is 3.6%, slightly up from November. Dominant swell directions remain SSW (29.1%) and SW (18.1%). Wind patterns show onshore easterlies (ENE 9.2%, E 16.6%) at 25.8% and offshore westerlies (WSW 15.6%, W 6.8%, SW 12.6%) at 35%. Ideal wind is back up to 25%. December’s synoptic setup often features a strong South Atlantic high that pumps southeasterly trade winds, but the frequent frontal passages still deliver offshore windows. This month delivers the most consistent combination of east swell and favorable wind, producing clean, rippable waves in the 1-1.5m range. It’s the peak of the summer surf season at Fence, and while it still requires a keen eye on the forecast, the rewards are well worth the wait.
Average Spot conditions at Fence in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Fence during December. 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 Fence for your next trip in December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Fence for December. 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 Fence.
