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.

July at Prainha offers decent surf conditions, though not the most consistent of the year. The average swell height is 1.5m with a solid period of 9.4s, providing good energy for intermediate to advanced surfers. Most swell energy comes from the SSE and S directions (peaking in the 1-2.5m range), offering well-shaped waves when paired with favorable winds. ENE and E swells also contribute, particularly in the 1-2m range, though less frequently. Wind conditions are mixed—only 25% of the time are they ideal (typically light ESE to SE breezes). However, NNE to NE winds (10-30kph) are common, which can create bumpy or onshore conditions. SSW to WSW winds are stronger (20-40+ kph) and tend to degrade wave quality. Overall, expect rideable surf with the best days arriving with SSE/S swells and lighter SE winds, but be prepared for variability in wind quality.