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.

January in Vanimo offers surfers consistent, mid-sized swells with an average height of 1.3m and a solid 10.7s period, providing clean, well-spaced waves. The swell is predominantly from the north to northeast (N, NNE, NE), with the most common wave heights in the 1-1.5m range (34% NNE, 12% NE). Larger sets up to 2.5m+ occasionally roll through, particularly from the NNE and NNW directions, though they remain rare. Wind conditions are favorable 39% of the time, with lighter breezes below 20kph from the N-NW quadrant. However, stronger WNW winds (10-30kph) occur frequently, potentially creating choppy conditions. The spot handles the dominant NNE swell well, offering punchy, rippable walls when winds cooperate. It’s best suited for intermediate to advanced surfers, especially during dawn patrol or late afternoon when winds tend to ease. Keep an eye out for rising WNW winds mid-morning. Overall, January delivers reliable surf with a mix of playful and powerful days.