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Conditions at Waikiki Beach in April
April: Trade Wind Swell and the Building Summer Breeze
April marks the definitive turn toward the trade-wind season. The average swell height eases to 5ft (1.6m) with an average period of 11.2 seconds. The waverose is now dominated by ENE and E swell, at 28.2% and 22.2% respectively; ESE adds 8.4% and NE 7.7%. Swells from the optimal N/NW quadrant have faded to almost nothing, with NNW at 3.0% and NW at 2.6%. The energy that does arrive is mostly 3.3-6.5ft (1-2m) trade-wind swell, with occasional 6.5-8ft (2-2.5m) pulses.
The wind story is even more one-sided: ENE winds blow 60.3% of the time, with 31.6% of all observations in the 30-40kph range. This relentless trade flow leaves only 12% of the time in the ideal offshore S/SSW/SW window. Expect bumpy, sideshore texture on most days and save your energy for a Kona low or a trade-wind lull. Air temperatures rise to 23.5°C, water to 24.5°C, and precipitation falls to 1.39mm/day as the wet season begins to dry out.
Average Spot conditions at Waikiki Beach in April
Swell history for April
Wind history for April
Swell quality
Analyze the groundswell consistency at Waikiki 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 Waikiki Beach for your next trip in April.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Waikiki 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 Waikiki Beach.