Surf spot

Cement Factory

Forecast conditions and map view for Cement Factory in Indonesia, Sumbawa. Open the interactive surf map to inspect wind, waves, and nearby spots.

Country: Indonesia, Sumbawa
Coordinates: -8.7272, 116.7657

Metric
Metric	18:00	21:00	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00	00:00	03:00	06:00	09:00	12:00	15:00	18:00	21:00	00:00	03:00	06:00	09:00	12:00	15:00
Wave height (m)	0.7	0.7	0.6	0.6	0.6	0.5	0.6	0.6	0.6	0.6	0.6	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.6	0.5	0.6	0.6	0.6	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.7	0.6	0.6	0.6	0.6	0.5	0.5
Wave direction	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SW	SSW	SW	SW	SW	SW	SSW	SSW	SSW	SSW	SSW	S	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW	SSW
Wave period (s)	11.7	12.1	11.8	11.4	11.4	11.1	11.4	12.7	12.3	14	14.8	13.6	13.5	13.3	13.2	12.9	12.6	12.3	12.2	12	11.8	8.8	11.7	11.6	11.6	11.5	11.4	11.4	11.3	11.4	11.4	11.7	11.7	11.6	11.8	11.8	11.6	11.4	11.5	11.9	11.9	11.8	11.7	11.6	11.4	11.1	11	10.9	10.8	10.8	10.9	10.8	10.7	10.7	10.2	9.8
Wave energy (kJ)	119	128	107	87	82	66	87	101	96	132	148	161	159	165	160	155	146	133	130	118	108	60	104	97	96	102	94	94	93	94	100	92	99	96	106	81	103	101	108	132	140	146	142	138	136	127	125	116	115	107	97	95	87	76	60	52
Wind speed (km/h)	3.6	1.9	4.7	7.2	10.8	16.1	8	0.8	2.9	1.6	3.3	7.2	10.4	7.5	8.2	7.2	2.1	1.1	1.5	8.3	10.7	19.6	7.6	5.3	3.1	1.6	4	10.7	9.2	8.7	1.5	1.1	3.3	1.8	2.6	6.6	9.4	11.3	4.4	2.9	3	5.1	0.8	6.4	14.4	19.6	12.1	4.6	4.4	3.4	3.5	11.8	11.1	5.5	6.1	3.1
Wind direction	NWGlassy	WSWGlassy	ESEGlassy	ESECross-off	SEOffshore	NNECross-on	ENECross-off	ESEGlassy	WGlassy	WSWGlassy	SWGlassy	SEOffshore	SEOffshore	NECross	NECross	SCross-off	SSWGlassy	WSWGlassy	ESEGlassy	SCross-off	SSEOffshore	NECross	ECross-off	SSWCross-off	SWGlassy	NNWGlassy	EGlassy	SSEOffshore	SEOffshore	SCross-off	NNEGlassy	NNWGlassy	WSWGlassy	WGlassy	SEGlassy	ESECross-off	SEOffshore	SSWCross-off	WGlassy	SGlassy	WSWGlassy	WCross-on	WNWGlassy	SSEOffshore	SSEOffshore	SSWCross-off	NNECross-on	SEGlassy	WGlassy	WNWGlassy	SSWGlassy	SSEOffshore	SSEOffshore	SSEOffshore	SCross-off	SEGlassy

Cement Factory, Sumbawa, Indonesia is a well-known reef break on the southwest side of Sumbawa, often surfed by more experienced surfers because it can get fast, powerful, and hollow.

Overview

Wave type: Reef break
Wave character: Fast lefts and rights, often with barreling sections
Best for: Intermediate to advanced surfers
Bottom: Sharp reef
Crowds: Can be crowded when conditions are good, but usually less hectic than world-famous Indonesian lineups
Access: Typically reached by boat or by staying nearby and driving; conditions and logistics can vary

What it’s like

Cement Factory is known for its clean, punchy waves when a solid swell lines up with the right tide and wind. It can produce long, wrapping walls with sections that pitch over into barrels, making it a favorite for surfers looking for powerful tropical reef waves. On smaller days it may be more manageable, but when it gets bigger, the takeoff can be critical and the reef unforgiving.

Best conditions

Swell: South or southwest swells
Wind: Light offshore or calm
Tide: Often works best at mid to lower tides, though this depends on swell size
Season: The dry season in Indonesia generally brings the most consistent surf, especially from April to October

Hazards

Sharp reef
Strong currents
Heavy waves on bigger swells
Potential for shallow takeoffs and wipeout consequences

Vibe

Compared with some of Bali’s more famous breaks, Cement Factory can feel a bit more remote and raw, with a proper Indonesian reef-break feel—beautiful, intense, and best surfed with respect for the conditions.