Itapeva - surf spot statistics

Best Surf Season (May - July)

The heart of the austral autumn and early winter brings the most reliable offshore wind window to Itapeva. With ideal wind percentages climbing to 37-40% and average swell heights hovering around 1.6-1.7m, these months offer the highest probability of clean, lined-up waves. The South Atlantic cranks up its storm activity, sending long-period groundswells from the S to SSE quadrant that wrap nicely into the coast. When the wind aligns from the W, WNW, or NW, the conditions are truly firing and the lineup pulses with punchy, rideable waves.

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

Shoulder months provide a mixed bag – decent swell potential but with a higher chance of onshore trades spoiling the surface. March and April still see average swell heights of 1.5 and 1.6m and periods rising from 8.8 to 9.1s, but ideal wind drops to 28-31%. August and September boast the largest average swell of the year (1.7-1.8m), yet the offshore wind window narrows to 30 and 20% respectively. You’ll find good days when the synoptic pattern sets up a west-flowing land breeze, but be ready to sift through more bumpy days.

Low Surf Season (October - February)

The austral spring and summer months see the trade wind regime dominate, with persistent NE to E winds blowing onshore across the beach. Ideal wind percentages plummet to 16-29% and the swell energy, though still present (average 1.4-1.7m), is predominantly from the E to ESE – often short-period and bumpy under the fetching breezes. Occasional cold fronts can deliver brief windows of offshore flow and longer-period S/SSW swells, but consistency is low. The best chance for a glassy session comes during early-morning land breezes or strong high-pressure setups. For the committed surfer, patience is key.

August: Late Winter Surge

August sees the average swell height push back up to 1.7m with a period of 9.2s. The ideal wind percentage drops to 30%, but the quality of the swell is excellent, with ENE (18.7%) and E (14.8%) swells mixing with solid S (13.3%) and SE (12.8%) contributions. The wind pattern becomes more variable as spring approaches, so you'll need to pick your windows carefully. The best days happen when a high-pressure system parks over the continent, generating a light offshore from the W/NW that polishes the incoming groundswell. Waves can reach the heavy, pumping category (1.5-2.5m) on the strongest pulses. August is a month of powerful surf that rewards those who read the weather and catch the good conditions before the trades return.