Conditions at Yerbabuena in April
April: Spring Lull With Punchy Windows
April marks a clear step down in size as the North Atlantic storm track retreats. Average swell height falls to 3.9ft (1.2m) and the period shortens to 9.4s, the first sub-10-second average in several months. The wave rose still favors WNW at 43.3% and W at 23.4%, while E windswell closes in at 10.6%. With S/SW swell almost nonexistent, most of Yerbabuena's surf will be wind-driven W/NW swell breaking on sandbars, clean, rippable and fun rather than big and powerful.
The wind is ideal only 28% of the time, making April a pick-your-window month. W and WNW winds are common at 13.8% and 11.1%, respectively, while strong E/ESE patterns continue in the afternoons at over 30% combined. Water temperature begins to climb to 16.9°C, the air warms to 16.3°C, and rainfall drops to 1.83mm/day. Expect waist-to-chest-high waves with the occasional bigger day if a stalled low pressures the Bay of Biscay.
Average Spot conditions at Yerbabuena in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Yerbabuena 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 Yerbabuena for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Yerbabuena 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 Yerbabuena.