Itacoatiara - surf spot statistics

Best Surf Season (May - August)

The South Atlantic winter roars to life during these months, driven by a climatological strengthening of the polar front and a steady procession of extratropical cyclones spinning up between 40°S and 50°S. At Itacoatiara, this translates into a consistent diet of mid-period to long-period S and SSW groundswells that march right into our SSW-facing beach. Average wave heights hover between 1.4m and 1.5m, with periods often pushing into the 10–11s range – powerful, punchy, and full of potential. Light to moderate offshore winds from the north quadrant (N, NNE, NE, NNW) blow over 60% of the time, grooming the waves into clean, rippable walls. This is the sweet spot: solid winter swell combined with reliable morning offshores. The most consistent and best-quality surf of the year arrives now.

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

Shoulder months in the South Atlantic bring a transition in both swell and wind regimes. March and April still benefit from the tail end of the winter storm track, delivering average swell heights of 1.2–1.4m and periods of 10.4–10.6s. However, the wind window shifts: ENE and E trades become stronger and more frequent, reducing the percentage of ideal offshore conditions to around 57%. You’ll find fun-sized waves in the morning before the seabreeze kicks in. September and October mark the spring transition; average swell remains decent at 1.3–1.5m with periods around 10s, but the wind becomes less cooperative – ideal offshore frequency drops to 47–49%. Swell directions also shift eastward more often (ESE, SE), which don’t quite line up with the beach as well as pure S or SSW pulses. You can still score, but you’ll need to pick your windows carefully, especially early or late in the day.

Low Surf Season (November - February)

Summer settles over Itacoatiara from November through February, and the surf takes a noticeable chill pill. The South Atlantic storm track retreats poleward, leaving the region in a high-pressure‑dominated pattern. Average wave heights drop to 1.1–1.3m and periods retreat to the 9.5–9.8s range – average, rideable, but lacking power. The swell spectrum is dominated by short‑ to mid‑period ESE and SE pulses that are often too small or too weak to really light up the sandbank. On the bright side, offshore wind frequencies are actually quite good (55–64%), thanks to a persistent land breeze regime that kicks in during the night and early morning. This means you can often find clean waist‑high waves, but the lack of size and punch makes it a groveling season. For those days when a southern hemi groundswell sneaks through, Itacoatiara can still turn on, but such events are the exception, not the rule.

April: Building Southern Groundswells

April sees a further uptick in swell size and quality. Average height climbs to 1.4m and period reaches 10.6s – squarely in the powerful, long‑period range. Swell directions become heavily S‑dominated: S (30.5%), SSE (31.3%), and SSW (4.9%) provide the best angles for Itacoatiara. Wave heights in the 1–2.5m range are common, with a good chunk (3.8%) even exceeding 2m from the S. Offshore wind frequency remains at 57%, but the winds are often lighter in the morning. The dominant wind direction is ENE (19.5%) followed by E (16.4%), meaning cross‑shore conditions prevail. However, north‑quadrant offshore flows (N, NNE, NE, NNW total ~18%) are still frequent enough to provide clean windows. April is a solid surf month: consistent chest‑ to head‑high waves with occasional overhead sets, all groomed by occasional offshores. This is when the winter season truly begins to fire.