Conditions at Haleiwa in June
June: Summer Flatline
June is the start of Haleiwa's true off-season. The average swell height falls to 5.5ft (1.7m) and the period drops to 8.2s, which is exactly the kind of short-period, low-energy spectrum that struggles here. ENE swell balloons to 54.7% of all wave activity, while E adds 28.0% and NE another 10.1%. The north-northwest window is almost nonexistent: NNW only manages 1.3%, NW and WNW produce nothing, and N contributes just 0.8%. For Haleiwa's exposure, this is about as bad as it gets.
Wind is almost entirely from the trades. ENE blows 69.3% of the time and E another 21.6%, creating persistent cross-shore conditions. Even on the 43% of days deemed ideal wind, it is mostly a small, groveling day at a spot known for heavy barrels. Air temperatures climb to 25.2°C, water temperature is 25.8°C, and rainfall drops to 0.96mm/day. If you are chasing quality waves on Oahu, the North Shore is not where the energy is.
Average Spot conditions at Haleiwa in June
Swell history for June
Wind history for June
Swell quality
Analyze the groundswell consistency at Haleiwa during June. 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 June.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Haleiwa for June. 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.