Kohala Lighthouse - surf spot statistics

Kohala Lighthouse is a surf spot that benefits most from consistent ground swells and favorable wind conditions, which are crucial for quality surf. The best months for surfing here are typically from November to February, when ground swell makes up around 44–60% of the swell mix, providing cleaner and more powerful waves. December stands out as the peak month, with the highest mean swell size of 2.0m and a balanced split between ground and wind swells (50/49%). January follows closely, with strong ground swell dominance (60%) and decent wind conditions (32% good). February also remains solid, though wind conditions deteriorate slightly. From March onward, wind swells become more prevalent, reducing wave quality, and unfavorable onshore winds dominate, peaking in summer (June–August) when good wind conditions drop below 20%. Autumn (October–November) offers a slight rebound in ground swell influence but still struggles with inconsistent winds. If you're looking for the most reliable surf, prioritize the winter months when ground swells are prominent and wind interference is relatively lower. Summer and early autumn are less ideal due to choppy wind swells and poor wind alignment.

May at Kohala Lighthouse offers surfable conditions with an average swell height of 1.5m and a decent 9.0s period, providing enough power for intermediate to advanced surfers. The majority of swells come from the east-northeast to east, with the most consistent wave heights in the 1-2.5m range (peaking around ENE and E directions). These swells are cleanest when paired with offshore winds, though ideal wind conditions (light and favorable) occur only 18% of the time. Wind is a limiting factor, as prevailing easterlies (10-30kph) are common, creating choppy or cross-shore conditions. Smaller, cleaner sessions are possible when winds shift west or northwest, but these are rare. Expect occasional shoulder-high+ waves (1.5-2.5m) with the best rides on easterly swells, but prepare for variable wind interference.