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 September, Ral Island offers small to mid-sized surf conditions with an average swell height of 0.5m and a decent period of 8.8s, indicating generally weak but somewhat organized waves. The majority of swells come from the north to northeast quadrant, with NNE (17.5%) and N (5.97%) dominating the 0-0.5m range, while NNE (13.89%) and E (6.14%) contribute slightly larger waves in the 0.5-1m range. Stronger swells (1-1.5m) are rare, mostly from E (0.96%) and ESE (0.25%), making clean, rideable waves inconsistent. Wind conditions are mixed, with only 19% being ideal for surfing—typically light offshore or sideshore winds from the west or northwest. However, prevailing easterly winds (ESE, E, and SE directions) often blow at 10-30kph, creating choppy or crossed-up conditions. Surfers should target days when weaker ENE or variable winds coincide with the occasional NNE swell for the best sessions, though larger, clean waves remain uncommon this time of year. Expect mostly small, playful surf with occasional mid-sized days when conditions align.