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Conditions at Hermanus in April
April: The Window Begins to Open
April is the first month where Hermanus begins to feel like a proper winter surf spot. The average period clicks past 12 seconds (12.0s), average height is 2.3m (7.5ft), and the ideal-wind percentage doubles from January to 26%. The wind rose shows a genuine battle between the last of the summer E/ESE trades (E 17.9%, ESE 14.0%) and an increasingly regular NW/WNW flow (NW 8.9%, WNW 10.5%). Stronger NW pulses are more frequent, and post-frontal NW winds set up glassy, offshore conditions. Swell direction is still led by SW (25.0%) and SSW (19.4%), but WSW (7.5%) and W (1.9%) add variety, while S/SSE/SE sources provide roughly 15% of the total. Water temps drop to 16.9°C and the air cools to a pleasant 17.4°C. April can serve up some of the best waves of the year before winter's bigger storms arrive.
Average Spot conditions at Hermanus in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Hermanus 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 Hermanus for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Hermanus 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 Hermanus.