Conditions at Kapu Beach in December
December: A Long, Clean Finish
December closes the year with more of the same northeast-monsoon magic. Ideal offshore wind is 53 percent, average wave period is 10.6s, and average swell height is 2-3ft (0.7m). The swell direction becomes a little more distributed than November: SSW leads at 23.9 percent, SW adds 20.9, WSW 14.1, W 12.8 and WNW 12.1. This is a nice mix of south and west energy that keeps Kapu's sandbars producing both lefts and rights.
The wind regime is consistently light and offshore out of the ENE/E/NE, especially in the mornings. Rain is scarce at 0.44 mm/day, water temps sit near 29.0°C, and air temps are warm. It may not be a big-wave month, but December delivers some of the most user-friendly, small-to-fun surf of the year - perfect for getting your score.
Average Spot conditions at Kapu Beach in December
Swell history for December
Wind history for December
Swell quality
Analyze the groundswell consistency at Kapu Beach during December. 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 December.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Kapu Beach for December. 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.