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Conditions at Avalanche in April
April: The Shoulder Begins to Swing
April marks the true transition into the winter storm season. The average swell height rises to 6.9ft (2.1m) and the period stretches to 11.7s, but ideal offshore wind drops to 25 percent. SSW swell still leads the pack at 27.8%, with S at 16.2% and SW at 11.6%. The wind rose becomes more energetic: WSW is the biggest single direction at 18.8%, W adds 11.7% and E/ENE combine for 24.2%. The increasing W component reflects strengthening frontal systems moving across the South Atlantic. While those fronts pump bigger, longer-period energy toward South Africa, they also make the local wind more variable. Look for the brief post-frontal WSW to SW windows, because when those line up with a 6-7ft (2.1m) SSW-SW groundswell, Avalanche can be very hollow. Air temps drop to 19.8°C and water to 18.8°C.
Average Spot conditions at Avalanche in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Avalanche during April. 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 Avalanche for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Avalanche for April. 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 Avalanche.