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Conditions at Cardiff Reef in April
April: Long-Period Southwest Swell and Scarcer Clean Windows
April sees the first true shift toward the SW groundswell regime, with SW (21.5%), WSW (40.6%) and W (33.2%) all contributing to a 1.1m average swell height. The average wave period jumps to 13.3s, one of the highest of the year, giving the waves a long, building push. Even though the heights are similar to winter, an increasing percentage of the swell is in the 3-5ft (1-1.5m) category, particularly from WSW and W. The ocean has excellent raw material.
However, the wind turns increasingly unfriendly. Ideal conditions drop to 16 percent, and W (24.1%), WSW (16.5%), WNW (13.8%) and SW (9.8%) dominate the wind rose. This spot's west-southwest exposure leaves it open to these exact onshore directions. Early mornings remain the play, with light easterly breezes and long-period WSW groundswell. Air temperatures warm to 15.6°C, precipitation dries up to 0.69 mm/day, and the water remains cool at 14.7°C.
Average Spot conditions at Cardiff Reef in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Cardiff Reef 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 Cardiff Reef for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cardiff Reef 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 Cardiff Reef.