Cement Factory (Sumbawa)

Conflicting break descriptions exist across sources: one reports a heavy, shallow right-hand reef break producing powerful hollow waves over sharp reef; another reports a long left-hand reef that needs a significant southwest swell to wrap into a bay and work. Both agree it’s a reef break and swell-exposure dependent.

Wave Direction

Both

Optimal Swell

SW, WSW

Swell Height

1.5–3 m

Optimal Tide

Low, Mid — Sources conflict: one reports low tide as best/needed; another reports mid tide. Always check for enough water over the reef.

Shelter

Semi-sheltered — Reef break in a more enclosed/bayed context is suggested by the need for swell to wrap into a bay (but it is still exposed as a reef break).

Wind Effect

offshore with SE trade winds (reported as offshore-wind-best)

Bigger Swell

Holds size well and becomes more consistent with more power (reported for the long left-hand reef).

Wave Quality

Excellent — Wave quality described as excellent in one source; good in another.

Wave Power

Powerful — Reported heavy/powerful with hollow waves in at least one description.

Wave Shape

Hollow — Hollow waves reported for the heavy shallow reef version.

Peel Speed

Fast — Reported fast peel for the (right-hand) heavy reef version.

Ride Length

Medium

Ride Length Details

Can offer long rides with multiple sections when the swell is large enough (for the left-hand version); heavy reef rides can be very fast when it’s working.