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.

April at Vanimo offers decent surf conditions with some variability. The average swell height is 0.9m and the period a solid 10.0s, producing clean, well-spaced waves. The primary swell directions are NE and NNE, accounting for most waves in the 0.5-1.5m range, while NW and NNW swells occasionally bring slightly bigger sets (1.5-2.5m). Wind conditions are favorable 45% of the time, with light to moderate breezes predominantly from the NE to ESE, keeping waves clean. However, stronger winds from the W to NW can occasionally create choppier conditions. Overall, expect mostly rideable waves with good shape, though larger swells are rare. Mid-sized days (1-1.5m) with NE swells and lighter winds will provide the best sessions.