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.

In January, Ferrugem offers surfable conditions with an average swell height of 1.5m and a period of 8.6s, providing decent energy for intermediate to advanced surfers. The swell predominantly arrives from the E to SSE directions, with the highest frequency in the 1-1.5m range (11.59% from the E), occasionally reaching 2.5m+. The ENE to ESE quadrants contribute most to quality waves, while southern swells (S to SSE) bring larger sets but are less frequent. Wind conditions are only ideal 18% of the time, often blowing from NNE to NE at 10-30kph, which can cause chop. However, lighter ENE or SE winds occasionally clean up the lineup. Expect the best sessions when swells align with lighter offshore or cross-shore winds, typically in the morning. The spot handles the average swell well, but bigger days (2m+) from the S/SSE may offer hollow, powerful waves for experienced surfers. Overall, January is moderately consistent but requires patience for optimal conditions.