Conditions at Haleiwa in March
March: Winter Power with a Trade-Wind Twist
March still has real muscle. Average swell height is 8ft (2.5m) and the average period sits at 11.7s, so the long-period character is hanging on. NNW is the heavyweight again at 16.9%, with N at 5.3% and NW at 4.9%. However, ENE swell begins to creep up to 10.9% and NE to 9.4% as the Pacific storm track starts to weaken. You will still see solid winter waves, but a growing mix of shorter-period trade swell can make the overall energy less organized.
Wind becomes a little less cooperative, with ideal S/SW flow dropping to 35%. The trades strengthen in March, with ENE contributing 36.7% of the wind distribution and E another 18.1%, so finding a clean Haleiwa session usually comes down to catching a dawn window or a quick push of Kona wind. Air temperatures stay at 22.8°C, water temperature is 24.1°C, and precipitation bumps to 2.39mm/day. It remains a good month, but the end of the pure winter season is approaching.
Average Spot conditions at Haleiwa in March
Swell history for March
Wind history for March
Swell quality
Analyze the groundswell consistency at Haleiwa during March. 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 Haleiwa for your next trip in March.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Haleiwa for March. 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 Haleiwa.