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Conditions at Stone Harbor in April
April: Spring Flip to Small Swell
April marks the spring flip. Average swell height slips to 0.6m (2ft) and the period holds at 6.6s, but surf quality gets harder to find as the wind pattern shifts onshore. E, ESE, SE and SSE combined account for a dominant 50% of swell observations, though most of that energy is in the 0-0.5m and 0.5-1m classes. S and SSW winds grow stronger, with SW, SSW and S making up over 28% of the wind distribution, and ideal surfing wind drops to just 5%. Occasional east coast lows can still string together a 1-1.5m (3-5ft) day, especially when a lingering NW offshore breeze meets an ESE groundswell. Water temp climbs to 10.2°C and air averages 10.6°C, so spring suit sessions are comfortable, but Stone Harbor becomes increasingly reliant on those transitional low pressure systems that form just off the Mid-Atlantic coast.
Average Spot conditions at Stone Harbor in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Stone Harbor 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 Stone Harbor for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Stone Harbor 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 Stone Harbor.