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Updating conditions · Calibrated break

Batu Bolong

South-Eastern Asia, Indonesia · Reef break

Local time — · Sunrise 05:50 · Sunset 18:20

Verified data gate

Reading the ocean.

SWELLRADAR is requesting a verified marine run for Batu Bolong.

Marine sourceChecking
Synthetic valuesBlocked
RefreshAutomatic
Spot calibratedSpot-calibrated profile

Spot intelligence.

Approachable when small, but crowd density is the defining hazard. Above the preferred size the lineup becomes much less forgiving.

Profile source · Indonesian Surf Guide
NS

Profile geometry

Swell axis SW · 215°

Offshore wind from NE · All levels profile

Wave

Mellow left + right peaks

Covered reef and sand

Swell window

S–SW

0.5–1.6 m offshore ranking band

Clean wind

N–NE offshore · dawn

Applied to wind scoring

Tide window

Mid to high

Qualitative timing guidance

Field guide

Read the break.

Character

01

Batu Bolong is defined by mellow left + right peaks over covered reef and sand. 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–SW swell, n–ne offshore · dawn and mid to high form the profile baseline. SWELLRADAR treats 0.5–1.6 m as a working range, not a guarantee of breaking-wave size.

Lineup read

03

Match the active peak to your ability and leave space for other surfers in the water. Pay particular attention to very dense crowd, learner and longboard traffic, loose boards. Local signs and advice always take priority.

Know before you paddle

Live conditions and local advice always override this profile.

Very dense crowdLearner and longboard trafficLoose boardsStronger currents with size
Optional community layerRecent surfer reportsVoluntary and potentially incomplete. Not used for the forecast or Surf Score.

The break

Reef break

All levels. Works best with S–SW swell.

Timing

N–NE offshore · dawn

Mid to high. 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.