Praia do Silveira - surf spot statistics

Praia do Silveira, Brazil, offers surfable waves year-round, but the conditions vary significantly by season. The best months for surfing here are generally from May to September, when ground swells become more dominant, providing cleaner, more consistent waves. May and June stand out with ground swell probabilities at 42% and wind swells dropping to 57-58%, resulting in better-quality waves. During this period, mean swell sizes range between 1.6m and 1.7m, offering solid overhead conditions on good days. Wind conditions, however, remain somewhat challenging, with favorable winds only around 25-26% of the time in May and June, though this is still better than other months. July and August see a slight dip in ground swells (34% and 31%) but maintain decent swell sizes (1.7m). September has the largest average swell (1.9m), but wind conditions worsen, with bad winds occurring 86% of the time. The worst months for surfing are from October to February, when wind swells dominate (81-84%), leading to choppier, less predictable waves, and good wind conditions become rare (13-21%). Swell size in these months averages around 1.4-1.7m, but the high frequency of poor wind conditions makes sessions less ideal. For surfers seeking quality waves, mid-year (May to August) is the prime window, despite the persistent wind challenges. Early morning sessions or sheltered spots nearby may help mitigate the often onshore winds.

February at Praia do Silveira offers decent surf conditions with an average swell height of 1.4m and a solid period of 8.8s, indicating well-formed, rideable waves. The swell predominantly comes from the east-southeast (ESE to SSE), with the highest frequency in the 1-1.5m range (10.2% ENE, 10.09% E) and a notable chance of larger waves (1.5-2.5m) from the E to SSE directions, which can provide more powerful, clean surf when conditions align. Cross-shore or light onshore winds (ideal for surfing 21% of the time) are most likely from the NE to ENE, though stronger NNE winds can occasionally create choppier conditions. Watch for ENE or E winds under 20kph, which tend to groom the swell best. The spot handles southerly swells (S to SSE) well, with a decent spread of 1.5-2.5m waves (peaking at 7.33% S for 1.5-2m), but avoid days with strong NNE/NE winds over 20kph, as they may blow it out. Overall, expect a mix of waist-to-head-high waves with occasional larger sets, best on lighter wind days when the ENE-E flow aligns with the swell direction.