Ral Island - surf spot statistics

Ral Island in Papua New Guinea offers surfable conditions year-round, though the best months for quality waves are from November to March. During this period, ground swell dominates (48-56% of the time), providing more consistent and powerful waves with mean swell sizes ranging from 0.7 to 1.0 meters. December and January are particularly good, with ground swell peaking at 55-56% and decent swell sizes. Wind conditions, however, are less favorable, with bad winds occurring 64-83% of the time, making offshore winds rarer but still possible. April and October are transitional months with a mix of ground and wind swell, but wind conditions improve slightly (29-35% good winds). Swell size drops to 0.6-0.7 meters, making them decent but not ideal for advanced surfers. From May to September, conditions deteriorate significantly, with low ground swell (2-20%), frequent flat spells (34-48% no swell), and small waves (0.5-0.6 meters). Wind conditions remain mostly poor, further reducing surf quality. For the best experience, target late November through early March when ground swell is strongest, despite challenging winds. If you prioritize cleaner conditions over wave power, April and October offer a compromise with slightly better winds and manageable swell. Avoid mid-year (May-September) when weak swells and onshore winds prevail.

In August, Ral Island experiences relatively small swells with an average height of 0.6m and a moderate period of 7.2s, indicating generally weak but somewhat organized waves. The swell direction is predominantly from the NE to E, with smaller contributions from the ENE and ESE, suggesting a mix of trade wind swells. Most waves (around 80%) fall below 1.5m, with only marginal chances of larger swells (1.5m+ mostly coming from E and ESE directions). Wind conditions are less favorable for surfing, with onshore E to SE winds blowing at 10-30kph for roughly 45% of the time, creating choppy or blown-out conditions. Cleaner sessions are likely when lighter winds coincide with swell, but this only happens around 18% of the time. Overall, August offers mostly small, inconsistent surf with occasional rideable days when ENE/ESE swells meet lighter winds—best suited for beginners or relaxed sessions rather than high-performance surfing. Advanced surfers will need patience for the rare cleaner, slightly bigger days.