Conditions at Kapu Beach in April
April: Longer Periods, More Southerly Swell
April is a month of changing seasons. The average swell height ticks up to 3ft (0.9m), and the average wave period jumps sharply to 10.8s - a sign that the swell sources are becoming more distant and powerful. Direction-wise, the energy now comes predominantly from the SSW/SW quadrant: SSW contributes 15.3 percent, SW 25.5, WSW 23.2, with W at 17.6 and WNW 13.6. There are still plenty of 2-3ft (0.5-1m) waves, but the 3-5ft (1-1.5m) class is becoming more common, especially from W and WNW.
The drawback is wind. Ideal offshore flow falls to 22 percent, and the NW/WNW flow becomes more noticeable during the day, creating cross/onshore texture. Water temps climb to 30.6°C, air temps are hot, and rain starts to increase to 1.38 mm/day. If you can find a dawn patrol window with offshore easterly flow, the long period makes April a sneaky-good month - but you will have to work for it.
Average Spot conditions at Kapu Beach in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Kapu Beach 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 Kapu Beach for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Kapu Beach 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 Kapu Beach.