Prainha - surf spot statistics

Prainha, Brazil, offers consistent surf year-round, though the best conditions typically occur between May and August. During these months, ground swell makes up a larger portion of the swell mix (38% in May and June, decreasing slightly towards August), leading to cleaner, more organized waves. The mean swell size hovers around 1.5–1.6m, providing solid, rideable waves without being overly heavy. Wind conditions are also more favorable in these months, with May, June, and July seeing the highest percentage of good winds (28%, 28%, and 25%, respectively), reducing the chances of onshore chop. The rest of the year is dominated by wind swell (peaking at 87% in December and January), which can create less predictable and sometimes messier waves. September through December sees a steep drop in favorable wind conditions, with bad winds peaking at 86% in September and October, making these months less reliable. Swell size remains decent in the shoulder seasons, but the increased wind interference lowers overall quality. For surfers seeking the most consistent and clean conditions, the May-to-August window is ideal, offering a balance of ground swell and manageable winds.

March at Prainha offers decent surf conditions with an average swell height of 1.4m and a solid 9.0s period, providing consistent, well-shaped waves. The primary swell directions are from the ESE to SSE, contributing to the majority of waves in the 1-2.5m range, which is ideal for intermediate to advanced surfers. Smaller waves (0.5-1.5m) are frequent, making it suitable for less experienced riders too. However, onshore winds from the NE to NNE are present around 23% of the time, which is favorable, while stronger cross-onshore or side-shore winds from other directions may occasionally disrupt conditions. Wind speeds stay mostly below 30kph, but gusts up to 40kph are possible, particularly from NNE to ENE. Overall, March delivers a mix of rideable days with clean conditions when winds align, though surfers should watch for windier sessions that could create choppier surf. The spot works best when the swell is steady and winds are light ENE or variable.