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 May, Ral Island experiences generally small but clean conditions, with an average swell height of 0.6m and a decent period of 9.2s, indicating well-spaced, organized waves. The dominant swell direction is from the northeast (NE), contributing 55.83% of waves between 0-1.5m, making it the most consistent source of rideable surf. Waves from the NNE are also notable, adding another 28.08%. Most waves are in the 0.5-1.5m range, with very few exceeding 2m, meaning conditions are typically mellow—ideal for longboarding or intermediate surfers. Wind quality is slightly variable, with only 28% of winds being favorable (light offshore or sideshore), while the rest tend to be onshore, predominantly from the east (E and ESE), which can create choppier conditions. Stronger winds (20-40kph) from the east and southeast occur about 15-20% of the time, potentially disrupting swell quality. Overall, May offers mostly small, playful waves with periods of clean conditions, best suited for relaxed surfing when winds cooperate. Larger, more powerful sessions are rare but possible when NE energy aligns with lighter winds.