Ipanema - surf spot statistics

Best Surf Season (May - August)

During the austral winter, the South Atlantic roars to life as deep low-pressure systems track from the Roaring Forties toward the Brazilian coast. This is when Ipanema truly delivers. Swell from the S, SSW, and SW floods the beach with consistent, powerful groundswell averaging 1.4m and period of 11s. The dominant high-pressure cell over the continent funnels offshore winds from the N to NNW, keeping the surface glassy. Over 61% of days in June and July feature ideal conditions, making this the prime window for punchy, rippable waves that often reach the pumping 1.5-2.5m range.

Fair Surf Season (March - April & September - October)

The shoulder months see a transition in the atmospheric engine. While the South Atlantic still churns out plenty of south-angled swell, the fetch is less organized and average wave heights drop to 1.2-1.4m with periods slipping to 10-10.6s. The wind regime becomes more variable; the percentage of ideal offshore winds drops to around 48-52%. You'll still find fun, solid waves, but expect more days with onshore breezes from S and SW that can chop up the face. April and September offer the best combo of size and reliability, while March and October are more hit-or-miss but can deliver epic sessions when the synoptic setup aligns.

Low Surf Season (November - February)

The austral summer is dominated by a semi-permanent high-pressure ridge over the South Atlantic that weakens storm activity. Swell becomes less frequent and smaller, averaging just 1.1-1.3m with periods around 9.5-9.8s. Most waves arrive as weaker S to SE swell, often too small or mushy for a good ride. Though the wind is still favorable around 50-59% of the time (thanks to persistent land-breezes from N/NE), the lack of swell energy means many days are just groveling on micro waves. December and January are particularly slow, but February can see a slight uptick in period as early autumn storms begin to stir.

April: Autumn Gold

April is where the winter swell machine begins to kick into gear. The average wave height jumps to 1.4m, and the period hits 10.6s – good solid groundswell. Swell from S dominates at 30.5%, with a deep 1.5-2m component (9.7%) and 3.8% in the 2-2.5m range. SSE follows at 31.3%, while SE contributes 22.7%. The SSW direction is still low (4.9%), but the strong S swell often refracts beautifully into the bay. The wind regime remains transitional: ideal offshore winds from N/NE/ENE make up 33.8% of the time, but the trade wind belt is still active (E at 14.1%, ESE at 9.4%). The onshore component from SW (7.3%) and WSW (6.8%) increases, but these are often light. The 52% ideal wind statistic holds steady. Wave quality is clearly improving: 1-1.5m is the most common height class (46.2%), but you'll see more 1.5-2m+ sets, especially from S and SSW. April offers some of the most consistent, rippable waves of the year, with long period power and clean morning windows.