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.

March: The Autumn Shift Begins

March marks the start of the autumn transition: average swell height increases to 1.2m and period lengthens to 10.4s, signaling the return of longer‑period southern energy. Swell direction shifts more south‑dominant: SSE (32.6%), S (25.7%), and SE (27.1%) combine for the bulk of the waves, with heights now often hitting 1–2m. The percentage of offshore wind drops slightly to 57% as the trade wind regime strengthens – ENE and E winds combine for nearly 38% of observations, blowing side‑shore or slightly onshore. Still, mornings frequently offer clean conditions with light north‑quadrant breezes (N, NNE, NE, NNW sum ~17%). Expect fun chest‑to‑head‑high surf on better days, especially when a solid S groundswell pushes through. March is a bridging month – not yet winter peak, but a noticeable step up in size and power from summer.