Vanimo - surf spot statistics

Vanimo, Papua New Guinea, offers consistent surf year-round, but the best conditions for surfers depend on swell quality, wind conditions, and wave size. The optimal months are typically from October to March, when ground swell dominates—especially in October, November, December, and January—with percentages between 44% and 52%. These months also provide the largest mean swell sizes, ranging from 0.9m to 1.3m, making them ideal for powerful, clean waves. Wind conditions improve slightly during these months, with good wind percentages peaking around 44-45% in November and December. The worst wind conditions are from June to September, when onshore winds prevail 63-71% of the time, often ruining wave quality. Swell consistency drops significantly from May to September, with higher wind swell dominance and occasional flat spells (up to 30% no swell in July). For surfers seeking quality waves, the dry season (October-March) is the prime window, combining reliable ground swells, manageable winds, and better wave heights, while the wet season (April-September) sees smaller, wind-affected swells and less favorable conditions.

March at Vanimo offers decent surf conditions with an average swell height of 1.2m and a solid period of 10.2s, ensuring consistent, well-formed waves. The primary swell direction is NNE (25.35% of waves in the 1-1.5m range), followed by NE and N, providing clean, rideable energy. Larger swells (1.5-2.5m) are less frequent but present, mostly from NNE and NW, offering occasional punchy sets. Wind conditions are a mixed bag—38% of the time, winds are favorable (light to moderate offshore or cross-shore), predominantly from the W to NW, but stronger onshore winds (20-30+ kph) from the W/WNW occur around 10-15% of the time, potentially chopping up conditions. Overall, March is reliable for intermediates to advanced surfers, with the best sessions occurring when winds stay below 20kph and swells hold in the NNE-NE sector. Expect a mix of waist-high to overhead waves, with cleaner mornings before afternoon winds pick up.