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 September, Waikiki Beach offers generally favorable surfing conditions with an average swell height of 1.3m and a solid period of 12.3s, ensuring well-formed, rideable waves. The predominant swell directions are from the ENE, SSE, and SSW, with the largest waves (1-2.5m) coming mainly from ENE (10.95-6.76%) and SSW (19.28-3.98%), providing a mix of manageable and occasionally punchy waves. However, wind conditions are less ideal—only 16% of the time are they truly optimal for surfing, as ENE winds frequently dominate, blowing at 10-30kph (11.66-26.91%), which can create choppy surface conditions. Expect lighter winds from the ESE to SSW directions (0.65-1.08% at 10-20kph) to offer cleaner sessions. Overall, September delivers consistent, mid-sized waves, but surfers should monitor wind forecasts closely for the smoothest rides.