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.

August: Late Winter – Still Strong, Windier Trades

August maintains the same average swell height (1.4m) and period (10.8s) as July, but the character begins to shift. Swell directions are still south‑dominant: S (26.6%), SSE (23.2%), SE (17.5%), and SSW (7.6%). The S and SSW contributions are slightly lower than mid‑winter, but the SE component increases to 17.5%, bringing more easterly swell that can be less focused. Wave heights remain solid: 1–2m is the sweet spot, with nearly 7.3% of waves exceeding 2m from the S and SSW. Offshore wind frequency drops to 60% as the trade wind (ENE at 25.6%) strengthens and becomes more persistent. Still, north‑quadrant winds (N, NNE, NE, NNW total ~20%) blow often enough, especially in the early hours. August produces plenty of head‑high surf with occasional overhead sets. It’s a good month but you’ll need to be selective with the wind; the morning window remains your best bet for clean waves.