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Conditions at Honolua Bay in May
May: Shrinking Swell and Transition to Summer
May is a definite step down. The average swell height is 1.4m (about 4-5ft) and the mean period is 10.0s. The wave rose shows ENE at 36.8%, E at 20.2%, and NE at 17.9%, with NNW down to 4.6% and N at 4.1%. Only about 9% of the total swell energy is coming from the ideal N/NW/NNW directions. Most of what reaches the bay is short-period easterly trade-wind swell, which struggles to produce the clean, down-the-line waves Honolua is known for.
Winds are still very trade-heavy, with ENE at 57.5% and NE at 19.1%. Ideal southwest wind only appears in a few percent of observations, although the overall ideal wind index measures 25% thanks to some lighter wind periods. Morning calm spells can still make the most of a small NW groundswell, but consistency is low. Water temperature warms to 24.9°C, air temperature averages 24.5°C, and rainfall is 1.27 mm/day.
Average Spot conditions at Honolua Bay in May
Swell history for May
Wind history for May
Swell quality
Analyze the groundswell consistency at Honolua Bay during May. 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 Honolua Bay for your next trip in May.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Honolua Bay for May. 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 Honolua Bay.