Rosa - surf spot statistics

Prainha, or Rosa, in Brazil is a consistent surf spot with year-round swell, primarily dominated by wind swell rather than ground swell. The best months for surfing here are generally from April to September, when ground swell percentages increase, offering better-quality waves. During this period, ground swell averages between 28% and 42%, peaking in May and June with 42%, which means more powerful and organized waves. Swell size remains relatively stable, averaging around 1.6m to 1.7m, with September seeing the largest mean swell at 1.9m. However, wind conditions are less favorable overall, with good wind days being relatively rare—typically under 26% throughout the year. The worst wind conditions occur from September to December, dropping below 15% favorable winds. Conversely, the slightly higher chance of good winds from May to June (24%–26%) makes these months more promising despite the persistent dominance of onshore winds. Outside the peak months, the high percentage of wind swell (often above 80%) creates choppier, less ideal conditions. If you prioritize wave consistency and size, target May through July; if you're willing to compromise on wind, September brings the biggest swells, though wind conditions are particularly poor. Overall, mid-year offers the best balance between swell size and quality, even though winds remain a challenge.

In February, Rosa in Brazil offers consistent but modest surf conditions with an average swell height of 1.4m and a decent period of 8.8s, suggesting well-formed waves with reasonable energy. The swell primarily arrives from the east to southeast, with the highest frequency in the 1-1.5m range (peaking from ENE to SE directions) and occasional sets up to 2.5m, particularly from the south. While larger waves (1.5m+) occur around 20% of the time, the majority of conditions are rideable for intermediate surfers. Wind conditions are less reliable, with only 21% of days offering ideal offshore or light cross-shore winds (typically NNE to ENE). However, stronger onshore winds from the north and northeast are frequent, potentially creating chop, especially when speeds exceed 20kph (~25% of the time). For the best sessions, watch for ENE swells paired with lighter ENE or E winds. Overall, February delivers surfable waves but requires patience for optimal wind alignment.