Praia dos Molhes - surf spot statistics

Best Surf Season (May - July)

The deep southern winter locks in over the South Atlantic, and Praia dos Molhes reaps the rewards. May through July is the sweet spot, with average swell heights sitting in the 1.6–1.7m range and periods stretching to 9.4–9.8 seconds – a solid combination of power and shape. More importantly, offshore winds from the west and southwest blow over 50% of the time, grooming the waves into clean, rippable lines. This is when the seasonal high-pressure systems dominate, setting up prolonged windows of light land breezes and consistent groundswell from the South Atlantic storm track.

Fair Surf Season (April & August - September)

April and August mark the transitions. In April, the swell picks up to 1.6m with a period of 9.1s, and offshore wind frequencies reach 41% – a promising blend, though still a bit rougher around the edges. August sees similar swell heights (1.7m) but a dip in offshore consistency to 42%, while September brings the biggest average swell of the year at 1.8m, but ideal wind plummets to only 28%. You'll find more windy, mixed-up days, but the occasional clean, powerful swell sneaks through, especially when a strong cold front pushes through and leaves behind crisp westerly winds.

Low Surf Season (October - March)

From October through March, the South Atlantic high-pressure ridge settles closer to the coast, generating persistent easterly to northeasterly winds that blow directly onshore at Praia dos Molhes. Ideal offshore wind percentages hover around 20–34%, and the average wave period drops to 8.2–8.6s, indicating shorter, less organized swell. Swell heights still average a respectable 1.4–1.7m, but the onshore flow chops up the surface and closes out many waves. It's not a total write-off – a southward shift of the wind or a distant storm can still deliver the goods – but consistency suffers, and you'll need to pick your windows carefully.

April: Solid Groundswell Arrives

April is where Praia dos Molhes starts to fire with real authority. The average swell height hits 1.6m and the period stretches to 9.1s. The swell direction spread widens further: S (12.7%) and SSE (15.9%) now contribute significantly, alongside the persistent E-ESE energy. This is classic groundswell from storms tracking east of the Andes and across the South Atlantic. Offshore ideal wind jumps to 41% – the best yet. Winds from the west quadrants (WNW through SSW) total over 30% combined, with many readings in the 10–20kph range, perfect for grooming the peaks. Expect clean, rippable waves in the 1–1.5m range with occasional pumpy 1.5–2m sets. This is prime time.