Conditions at Cap Sim in April
April: Shoulder Season Transition
April marks a noticeable step down in quality. Average wave height eases to 6.6ft (2.0m) and the period drops to 10.8 seconds, indicating a mix of longer-period groundswell and shorter-period windswell. The directional spread becomes even more concentrated in the NNW, with 47 percent of all waves arriving from that direction and another 21 percent from NW. With Cap Sim oriented to the west-southwest, much of this energy is not optimally aligned, so wave quality depends heavily on the amount of W/SW component in the water. Ideal wind prospects drop to 31 percent as the northeast trade flow strengthens; NNE and NE winds combine for over 50 percent of the observations, often blowing in the 20-40kph range and making the surface lumpy.
Water temperature climbs slowly to 17.7°C with air temperatures averaging 17.3°C. April is for flexible surfer expectations: a big NNW swell can still produce chunky waves, but you will need to work the tides and winds for the best returns.
Average Spot conditions at Cap Sim in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Cap Sim 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 Cap Sim for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Cap Sim 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 Cap Sim.