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.

December at Waikiki Beach offers generally manageable surf conditions, with an average swell height of 1.4m and a solid period of 11.1s, indicating consistent, well-spaced waves. The dominant swell directions are ENE and NE, contributing to 10.34% and 3.33% of waves in the 1-1.5m range, respectively, with ENE also producing the largest share of bigger waves (11.03% at 1.5-2m). This suggests a mix of intermediate-friendly rollers and occasional punchier peaks. Winds are a mixed bag—only 19% of the time do they align ideally for surfing, with ENE winds (10-20kph and 20-30kph ranges) being frequent but often too onshore for clean conditions. Lighter winds from E or NE can occasionally groom the swell, but expect some chop. Overall, December delivers rideable waves most days, best suited for longboarding or relaxed performance surfing when the ENE swell aligns with lighter winds. Bigger days (1.5m+) are less common but offer more power when they arrive.