Ferrugem - surf spot statistics

Best Surf Season (May - August)

During the austral winter, the South Atlantic roars to life as mid-latitude storm tracks shift northward, sending consistent long-period swell trains toward the Brazilian coast. Ferrugem, with its east-southeast exposure, lights up as dominant ESE to S swells in the 1.3–1.5m range roll in with periods averaging 9–9.6 seconds — solid, punchy, and rippable. The real game-changer, however, is the wind regime: a high-pressure system anchored over Argentina funnels clean offshore breezes from the WSW through NW quadrant, pushing ideal wind percentages to 65–72%. Expect glassy morning sessions with wave heights often hitting the ‘fun’ to ‘pumping’ categories. This is the window where Ferrugem truly delivers.

Fair Surf Season (April & September - October)

The transition months bring a mix of lingering winter swell and building summer patterns. April still sees decent SSE and S swell contribution (over 25% combined) with an average period of 9.0s, and ideal wind ticks up to 55% as cold fronts pass. September and October see a rise in E and ENE swell (nearly 40% of total) pushing average heights to 1.4–1.5m, but the wind becomes more fickle — ideal percentages drop to 43–50% as the South Atlantic high weakens and northerly quadrant winds strengthen. Surf is rideable, often fun, but you'll need to pick your windows carefully to avoid onshore chop.

Low Surf Season (November - March)

Summer in the Southern Hemisphere brings a persistent high-pressure ridge over the South Atlantic, stabilising the atmosphere and suppressing storm activity. Swell heights average just 1.2–1.3m with periods dipping to 8.0–8.5s — small, grovelly, and often lacking punch. The dominant wind shifts strongly to N through NE directions, blowing directly onshore at Ferrugems east-facing beach. Ideal wind percentages hover around 39–47%, and even then, most offshore flows are light. Waves tend to be short-period windswell or weak groundswell, producing messy, choppy conditions. The occasional E/ENE swell can offer a micro-session, but don't expect the reef to fire. This is the time for a longboard or a trip to the coast of Peru.

January: Mid-Summer Lull

Mid-summer brings a dominant high-pressure ridge over the South Atlantic, suppressing storm activity and limiting swell generation. The average wave height sits at a modest 1.2m with a period of 8.0s — predominantly short-period, weak groundswell. Swell direction is heavily skewed toward the E-ESE quadrant (over 51% of all waves), which aligns with Ferrugem's east-southeast exposure but delivers mostly small, crumbly waves. The real issue is the wind: N through NNE flows account for over 43% of all observations, blowing directly onshore and adding texture to an already marginal swell. Ideal offshore wind (WSW-NW) occurs only about 6.6% of the time, and most of that is light. Best chance for a clean session is early morning before sea breezes kick in, when a rare drift from the west can polish a 1–1.5m E swell into something grovelly but fun.