10-day surf forecast with Strike Scores for Maresias, São Sebastião, SP, Brazil
Maresias is Gabriel Medina's home break and arguably the most high-performance beach break in Brazil. The wave breaks over shifting sandbars that produce world-class barrels when autumn and winter swells push up from the south. The "Canto do Moreira" section at the south end is the most famous peak, where Medina grew up learning the airs and tubes that would make him a two-time world champion. The nightlife here is legendary, making it a complete surf trip destination.
Best day in the forecast: 2026-08-08 with a score of 69/100 (Good)
Fair recommendation: Maresias has 4 Good days but no Firing days. Decent for a local session.
Poor alignment: Swell from 136° is 44° off optimal 180°, barely within workable range 157°-225°.
Too small: 0.7m is below minimum 1.2m. Waves will be weak/mushy.
Moderate period: 12s meets minimum 10s but below ideal 14s. Some groundswell energy present.
Onshore/cross-shore: 7 km/h from 65° (ENE). Destroying wave quality. Offshore range: 315°-45°.
Groundswell-dominant conditions (clean, long-period waves).
Poor conditions at Maresias. Either swell direction (136°), size (0.7m), or wind (7 km/h from 65°) is unfavorable. Consider other spots or wait for better conditions.
0.7m (2.3ft) swell from 136° (SE) at 12s period
Moderate alignment: Swell from 164° is 16° off optimal 180°, workable but not ideal.
Too small: 1.1m is below minimum 1.2m. Waves will be weak/mushy.
Onshore/cross-shore: 5 km/h from 49° (NE). Destroying wave quality. Offshore range: 315°-45°.
Surfable but not special at Maresias. The 1.1m swell from 164° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
1.1m (3.6ft) swell from 164° (SSE) at 12s period
No alignment: Swell from 95° is outside workable range 157°-225°. Wrong swell direction for this spot.
Too small: 1.0m is below minimum 1.2m. Waves will be weak/mushy.
Short period: 9s is below minimum 10s. Windswell-dominated (choppy, weak waves).
Onshore/cross-shore: 9 km/h from 54° (NE). Destroying wave quality. Offshore range: 315°-45°.
Poor conditions at Maresias. Either swell direction (95°), size (1.0m), or wind (9 km/h from 54°) is unfavorable. Consider other spots or wait for better conditions.
1.0m (3.3ft) swell from 95° (E) at 9s period
No alignment: Swell from 91° is outside workable range 157°-225°. Wrong swell direction for this spot.
Too small: 0.8m is below minimum 1.2m. Waves will be weak/mushy.
Short period: 8s is below minimum 10s. Windswell-dominated (choppy, weak waves).
Onshore/cross-shore: 8 km/h from 77° (ENE). Destroying wave quality. Offshore range: 315°-45°.
Poor conditions at Maresias. Either swell direction (91°), size (0.8m), or wind (8 km/h from 77°) is unfavorable. Consider other spots or wait for better conditions.
0.8m (2.6ft) swell from 91° (E) at 8s period
Good alignment: Swell from 183° is 3° off optimal 180°, still within prime range.
Marginal size: 2.1m is 0.3m from ideal 2.4m.
Perfect period: 14s is at or above ideal 14s. Long-period groundswell with maximum power.
Onshore/cross-shore: 11 km/h from 47° (NE). Destroying wave quality. Offshore range: 315°-45°.
Good surfable conditions at Maresias. 2.1m swell from 183° with manageable wind. Solid session guaranteed.
2.1m (6.9ft) swell from 183° (S) at 14s period
Perfect alignment: Swell from 179° is within 5° of optimal 180°.
Marginal size: 1.8m is 0.6m from ideal 2.4m.
Onshore/cross-shore: 11 km/h from 249° (WSW). Destroying wave quality. Offshore range: 315°-45°.
Good surfable conditions at Maresias. 1.8m swell from 179° with manageable wind. Solid session guaranteed.
1.8m (5.9ft) swell from 179° (S) at 14s period
Good alignment: Swell from 177° is 3° off optimal 180°, still within prime range.
Marginal size: 2.0m is 0.4m from ideal 2.4m.
Onshore/cross-shore: 9 km/h from 157° (SSE). Destroying wave quality. Offshore range: 315°-45°.
Surfable but not special at Maresias. The 2.0m swell from 177° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
2.0m (6.6ft) swell from 177° (S) at 12s period
Local wind-generated waves (choppy, short-period)
Good alignment: Swell from 187° is 7° off optimal 180°, still within prime range.
Good size: 3.0m is within 15% of ideal 2.4m.
Onshore/cross-shore: 12 km/h from 181° (S). Destroying wave quality. Offshore range: 315°-45°.
Good surfable conditions at Maresias. 3.0m swell from 187° with manageable wind. Solid session guaranteed.
3.0m (9.8ft) swell from 187° (S) at 14s period
Very low confidence (8-10 day forecast, conditions may change)
Moderate alignment: Swell from 189° is 9° off optimal 180°, workable but not ideal.
Moderate period: 11s meets minimum 10s but below ideal 14s. Some groundswell energy present.
Onshore/cross-shore: 4 km/h from 58° (ENE). Destroying wave quality. Offshore range: 315°-45°.
Good surfable conditions at Maresias. 2.0m swell from 189° with manageable wind. Solid session guaranteed.
2.0m (6.6ft) swell from 189° (S) at 11s period
Perfect alignment: Swell from 181° is within 5° of optimal 180°.
Good period: 13s is 93% of ideal 14s. Clean, powerful groundswell.
Onshore/cross-shore: 14 km/h from 51° (NE). Destroying wave quality. Offshore range: 315°-45°.
Surfable but not special at Maresias. The 2.1m swell from 181° is workable, but conditions aren't ideal. Fine if you're local, but not worth a dedicated trip.
2.1m (6.9ft) swell from 181° (S) at 13s period
Open-Meteo Weather API (wind/weather data)