Waikiki Beach - surf spot statistics

Waikiki Beach is known for its relatively consistent surf, but the conditions vary throughout the year. The best months for surfing at Waikiki are generally from September through May, when ground swells dominate and swell size remains steady around 1.3-1.4m. Ground swells, which provide cleaner and more organized waves, are most prevalent from September (67%) to May (65%), peaking in September and May. Wind conditions, however, are less favorable overall, with only 9-21% of days offering good winds across the year—lowest in June (9%) and highest in January (21%). The worst wind conditions occur from April to August, when bad winds exceed 85% of the time. Swell consistency is excellent year-round, with no days registering as flat. December and November see a more balanced mix of ground and wind swells (50-51% ground swell), but winds remain predominantly onshore. For the best balance of swell quality and slightly better wind chances, target September, October, or May, when ground swell percentages are high (62-67%) and wind conditions are marginally better compared to summer months. Summer (June-August) tends to be the least favorable due to stronger onshore winds and a slight drop in ground swell dominance. While Waikiki is surfable year-round, the fall and early winter months offer the most reliable conditions for experienced surfers.

In August, Waikiki Beach typically offers manageable surf conditions with an average swell height of 1.4m and a solid 11.4s period, providing consistent, rideable waves. The dominant swell directions are from the ENE and SSW, contributing to the majority of waves in the 1-1.5m range, with ENE swells occasionally pushing into the 1.5-2m range—ideal for intermediate to advanced surfers. Wind conditions are generally less favorable, with ENE trade winds being prevalent at 10-30kph, contributing to choppy conditions. However, only 11% of the time are winds truly ideal for surfing, typically when lighter or offshore. The most consistent surf comes from ENE to SSW swells, while windswell from the S and SW can add variety. Overall, Waikiki in August delivers fun, user-friendly waves, but surfers should watch for wind-affected conditions and prioritize sessions during lighter wind periods for cleaner faces.