Ferrugem - surf spot statistics

Ferrugem in Brazil offers consistent surf year-round, but the best conditions typically occur between May and September. During these months, the swell is predominantly groundswell (peaking at 42% in May and June), which provides cleaner, more powerful waves compared to the windswell-dominated conditions in other months. Mean swell size also increases slightly, averaging around 1.6-1.7m, with May to August delivering the most reliable wave heights. Wind conditions, however, remain challenging throughout the year, with bad winds (onshore or cross-shore) dominating over 70% of the time. The least unfavorable winds occur from May to July (25-26% good wind days), though even then, clean conditions are relatively rare. September stands out with the largest average swell size (1.9m) but suffers from the worst wind conditions (only 14% good wind days). From October to April, the surf is smaller and more windswell-driven, with January, February, and December showing the weakest groundswell influence (16-19%) and the highest frequency of poor winds (79-87%). Overall, mid-year (May-August) provides the best compromise between swell quality and size, though surfers should be prepared for frequent onshore winds. Early mornings or sessions following wind shifts may offer brief clean conditions, but consistent offshore breezes are rare at this spot.

June at Ferrugem offers decent surf conditions, though with some variability. The average swell height is 1.6m, paired with a solid 10.0s period, which should provide well-formed, rideable waves, especially in the 1-2.5m range. The swell direction is primarily from the S, SSE, and SE, delivering the majority of the surfable energy, with S swells being the most dominant (often producing 1.5m+ waves). ENE and E swells also contribute but are generally smaller. Wind conditions are a mixed bag—only 26% of the time is it ideal for surfing (typically lighter offshore or cross-shore winds from NE to E). Unfortunately, stronger onshore winds from the N, NNE, and SSW are common, which can degrade wave quality. Overall, June presents a fair mix of surfable days, with the best sessions likely when S swells coincide with lighter NE or E winds, offering clean, mid-sized waves for intermediate to advanced surfers.