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.

March: Transitional Pulses Begin

As autumn approaches, March shows the first real signs of change. The average swell height rises to 1.5m, with period increasing to 8.8s – a noticeable jump in power. The dominant swell directions shift slightly: ESE (22.3%) and E (20.7%) still lead, but southerly components (SE through S) now make up 42.4% of the total, suggesting more frontal activity. Offshore wind frequency climbs to 34%, with the WSW through NW quadrant contributing a combined 11.3% – still light but more consistent. The trade winds (NE) weaken a bit to 15%. The result: more punchy, organized swell with a growing number of windows of clean, offshore conditions. It's the beginning of the good stuff.