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.

July: Deep Winter Consistency

July continues the winter onslaught with near-identical statistics to June. The average swell height remains 1.4m, and the period is 10.8s – still powerful and long. Swell directions are steady: S at 29.2%, SSE at 21.1%, SE at 18.1%, and SSW at 11.1%. The distribution of wave heights mirrors June as well, with 1-1.5m at 35.7% and 1.5-2m at 22.2%. The wind remains favorable: ideal offshore from N/NE/ENE makes up 49.1% of the time (N 8.4%, NNE 9.2%, NE 10.3%, ENE 14.2%). Onshore south winds (S/SSW/SW) account for 14.5% but are often light. The total ideal wind percentage is 61%. Consistency is key: day after day, Ipanema sees solid south swell and morning offshore breezes. This is the month to plan a trip if you want reliable, head-high to slightly overhead waves. The only downside is that the water gets cooler, but a 3/2 wetsuit is all you need.