SWELLRADAR
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Updating conditions · Calibrated break

Maresias

São Sebastião · São Paulo, Brazil · Beach break

Local time — · Sunrise 05:13 · Sunset 18:21

Verified data gate

Reading the ocean.

SWELLRADAR is requesting a verified marine run for Maresias.

Marine sourceChecking
Synthetic valuesBlocked
RefreshAutomatic
Spot calibratedSpot-calibrated profile

Spot intelligence.

Maresias now has its own exposed beachbreak calibration. South groundswell and north wind receive the strongest fit; tide remains adaptive because peak quality is controlled more by the active bank than one fixed water level.

Profile source · Surf-Forecast Maresias guide
NS

Profile geometry

Swell axis S · 180°

Offshore wind from N · Advanced profile

Wave

Powerful left and right beach peaks with a south-end wedge

Shifting sand banks

Swell window

S groundswell

0.8–3.2 m offshore ranking band

Clean wind

N offshore

Applied to wind scoring

Tide window

All tides · sandbank dependent

Qualitative timing guidance

Field guide

Read the break.

Character

01

Maresias is defined by powerful left and right beach peaks with a south-end wedge over shifting sand banks. The shape can change with swell angle, period and the active section, so the live score should always be paired with a visual check from shore.

Best setup

02

S groundswell swell, n offshore and all tides · sandbank dependent form the profile baseline. SWELLRADAR treats 0.8–3.2 m as a working range, not a guarantee of breaking-wave size.

Lineup read

03

This is an advanced profile: positioning, entry and exit should be assessed before committing. Pay particular attention to heavy shorebreak, strong rip currents, dense crowd. Local signs and advice always take priority.

Know before you paddle

Live conditions and local advice always override this profile.

Heavy shorebreakStrong rip currentsDense crowdPowerful hollow sections
Optional community layerRecent surfer reportsVoluntary and potentially incomplete. Not used for the forecast or Surf Score.

The break

Beach break

Advanced. Works best with S groundswell swell.

Timing

N offshore

All tides · sandbank dependent. Re-check local observations and the lineup before you paddle out.

Data note

Model data unavailable

SWELLRADAR withholds numerical conditions, scores and surf windows until a quality-checked marine forecast is available.