Conditions at Haleiwa in January
January: The Apex of North Shore Power
January is prime Haleiwa. The North Pacific storm track is firing on all cylinders and the average swell height checks in at a heavy 9ft (2.7m) with an average period of 12.8s. The energy is concentrated in the NNW direction at 16.2%, with NW adding another 9.5% and N another 3.2%, meaning the beach is fully exposed to the good stuff. Long-period groundswell in the 10-14s and 15-19s ranges is common, and when the 2-2.5m category fills the charts, Haleiwa's reefs show their true teeth.
Wind is the main variable. The ideal S/SW offshore flow associated with Kona lows blows around 38% of the time, which is exactly when the big NNW lines groom themselves into clean, workable barrels. The rest of the time, ENE and E trade winds roll in from the east, adding cross-shore chop to the surface. Air temperatures sit at 22.8°C, water temperature is a warm 24.4°C, and January's rainy-season showers keep the sky dramatic. Bring your biggest board and your patience; when it comes together, this is world-class.
Average Spot conditions at Haleiwa in January
Swell history for January
Wind history for January
Swell quality
Analyze the groundswell consistency at Haleiwa during January. 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 January.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Haleiwa for January. 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.