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Conditions at Kohala Lighthouse in September
September: A Faint Pulse of Renewal
September is the first month that shows a pulse of life after summer. Average swell height is 1.5m (5ft) - the lowest of the year - but the period ticks back up to 9.6s, and the swell rose begins to show a few more specks of north energy: N, NNE, NE and NNW directions combine for about 4.6% of the total, still tiny but more than June through August. The northeast direction in particular improves to 3.5%, hinting that the North Pacific is starting to wake up. That said, the trade wind regime remains firmly in control. E swell is still 54.1% of everything, ENE another 36.9%, and ENE/E winds combine for 91.5% with ideal wind at just 2%. Water temp is at its annual peak of 26.7°C, air sits at 22.4°C. September is a tease: you can feel the season shifting, but the lighthouse is still waiting for its first proper north groundswell.
Average Spot conditions at Kohala Lighthouse in September
Swell history for September
Wind history for September
Swell quality
Analyze the groundswell consistency at Kohala Lighthouse during September. 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 Kohala Lighthouse for your next trip in September.
Ground swell
Ground swell by size
Wind conditions
Evaluate the wind and swell alignment at Kohala Lighthouse for September. 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 Kohala Lighthouse.