Big Rock 48 hour detailed Surf Forecast

Lat Long: 33.87° S 114.98° E

Issued: 7 am 21 Jul 2026 (local time)

Forecast update in hr min

Today's Big Rock sea temperature is

19.3° C

Big Rock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Surf Forecasts:

How big are the waves at Big Rock today (21 Jul):

Morning surf: Morning surf (21 Jul, local time) - 8ft (2.5m), 12s period with SW swell.
Afternoon surf: Afternoon surf (21 Jul, local time) - 8ft (2.5m), 13s period with SW swell.
Evening surf: Evening surf (21 Jul, local time) - 8ft (2.5m), 13s period with SW swell.

The current surf forecast for Big Rock at 10AM is: 2.5m 12s primary swell from a Southwest direction and 0.8m 15s secondary swell from a West-southwest direction (forecast issued at 07:00am July 21). The wind direction is predicted to be cross-shore.

Time (AWST) & Date	Wave Height	Wave Period
Morning (21 Jul)	8ft (2.5m)	12s
Afternoon (21 Jul)	8ft (2.5m)	13s
Evening (21 Jul)	8ft (2.5m)	13s

Table - waves today at Big Rock. (Swell directed towards the surf break)

	Short Range Forecast Mostly dry. Very mild (max 15°C on Tue morning, min 12°C on Wed night). Wind will be generally light.
	Tuesday 21							Wednesday 22								Thursday 23
	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM
Rating (10 max)	0	2	2	2	3	4	4	4	4	5	5	4	4	4	5	5	5	4	3	4	3	4	4
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SW 11	SW 12	SW 12	SW 13	SW 13	SW 13	SW 12	SW 13	SW 13	SW 16	SW 14	SW 14	SW 14	SW 14	SW 14	SW 14	SW 14	SW 14	SW 14	SW 14	SW 14	SW 13	SW 13
Wave Graph
kJ	1840	1525	1848	2187	2121	1805	1878	2147	2600	1771	3901	4370	4310	3944	3594	3594	3261	2944	2570	2125	1744	1568	1346
Wind (km/h)	SSW	SSW	S	S	S	SSE	SSE	SSE	SE	ESE	ESE	S	SSE	ESE	E	ENE	ENE	ENE	NE	NNE	N	ESE	E
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-on	cross	cross	cross	cross	cross-off	cross-off	cross-off	cross-off	cross-off	off	cross	cross-off	cross-off	off	off	off	off	cross-off	cross-off	cross	off	off
High Tide	3:33AM0.72m								4:03AM0.78m								4:52AM0.84m
Low Tide					4:28PM0.44m								4:18PM0.38m								4:25PM0.34m


	7:20	—	—	—	—	—	—	—	7:18	—	—	—	—	—	—	—	7:18	—	—	—	—	—	—
	—	—	—	—	5:31	—	—	—	—	—	—	—	5:32	—	—	—	—	—	—	—	5:34	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	14	15	14	14	14	14	14	14	14	13	14	15	15	14	14	13	12	12	12	14	15	14	14
Feels °C	9	10	10	9	10	10	10	11	11	10	11	12	11	9	10	9	8	8	8	11	13	11	11
Swell 1 Height (m) Direction Period (s)	SW 11	SW 12	SW 12	SW 13	SW 13	SW 13	SW 12	SW 13	SW 13	SW 12	SW 14	SW 14	SW 14	SW 14	SW 14	SW 14	SW 14	SW 14	SW 14	SW 14	SW 14	SW 13	SW 13
kJ	1840	1525	1848	2187	2121	1805	1878	2147	2600	1771	3901	4370	4310	3944	3594	3594	3261	2944	2570	2125	1744	1568	1346
Swell 2 Height (m) Direction Period (s)	—	SW 14	WSW 15	—	—	SW 18	—	—	—	SW 16	—	—	—	—	—	—	—	—	—	—	NNE 4	NNE 5	NE 5
kJ	—	412	272	—	—	12	—	—	—	1738	—	—	—	—	—	—	—	—	—	—	8	4	6
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	W 18	W 18	W 18
kJ	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	25	25	55
Wind waves Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	NE 4	—	—	—
kJ	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	8	—	—	—
Nearest Offshore or Glassy	Hussas WA - Margaret River	Injidup Point WA - Margaret River	Injidup Point WA - Margaret River	Injidup Point WA - Margaret River	Huzzawouie (Huzzas) WA - Margaret River	Big Rock WA - Margaret River	Big Rock WA - Margaret River	Big Rock WA - Margaret River	Big Rock WA - Margaret River	Big Rock WA - Margaret River	Big Rock WA - Margaret River	Huzzawouie (Huzzas) WA - Margaret River	Injidup Carpark WA - Margaret River	Huzzawouie (Huzzas) WA - Margaret River	Big Rock WA - Margaret River	Big Rock WA - Margaret River	Big Rock WA - Margaret River	Big Rock WA - Margaret River	Cobblestones WA - Margaret River	Big Rock WA - Margaret River	Cobblestones WA - Margaret River	Big Rock WA - Margaret River	Big Rock WA - Margaret River
Rating (10 max)	4	4	4	4	4	4	4	4	4	5	5	5	5	5	5	5	5	4	4	4	4	4	4
Distance (km)	2	20	20	20	1	0	0	0	0	0	0	1	20	1	0	0	0	0	0	0	0	0	0
Best forecast wave conditions in Margaret River	Injidup Point	Injidup Point	Conto Springs	Injidup Point	Conto Springs	Margaret River Bommie	Margaret River Bommie	Margaret River Bommie	Margaret River Bommie	Margaret River Bommie	Margaret River Bommie	Gas Bay	Injidup Carpark	Gas Bay	Margaret River Bommie	Margaret River Bommie	Margaret River Bommie	Gas Bay	Margaret River Bommie	Supertubes	Supertubes	Margaret River Bommie	Margaret River Bommie
Rating (10 max)	4	4	4	4	4	4	4	4	5	5	6	6	5	5	5	5	5	5	4	4	4	4	4
Best forecast wave conditions in Australia	Luna Park VIC - Far West	Luna Park VIC - Far West	Luna Park VIC - Far West	Luna Park VIC - Far West	Luna Park VIC - Far West	Luna Park VIC - Far West	Margaret River Bommie WA - Margaret River	Margaret River Bommie WA - Margaret River	Margaret River Bommie WA - Margaret River	Margaret River Bommie WA - Margaret River	Margaret River Bommie WA - Margaret River	Gas Bay WA - Margaret River	Injidup Carpark WA - Margaret River	Gas Bay WA - Margaret River	Margaret River Bommie WA - Margaret River	Margaret River Bommie WA - Margaret River	Margaret River Bommie WA - Margaret River	Point Roadnight VIC - Torquay	Margaret River Bommie WA - Margaret River	Cyclops WA - Far South	Cyclops WA - Far South	Cyclops WA - Far South	Cyclops WA - Far South
Rating (10 max)	4	4	4	4	4	4	4	4	5	5	6	6	5	5	5	5	5	6	4	4	4	4	4
Header Global	Diners Beach New Zealand	Purakaunui Bay New Zealand	Purakaunui Bay New Zealand	Asu Indonesia	Asu Indonesia	Aganoa Beach Samoa	Chameau Mauritius	Sea Vista South Africa	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Gas Bay Australia	Injidup Carpark Australia	Gas Bay Australia	Viri Inga O Tuki Chile	Cathedral Rock Australia	Viri Inga O Tuki Chile	Point Roadnight Australia	Boulders Samoa	Cobblestones Australia	Brak River South Africa	Benkunqut Indonesia	Barbel Point South Africa
Rating (10 max)	5	5	5	4	4	4	4	5	5	5	6	6	5	5	8	9	6	6	4	4	4	4	4

Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

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Big Rock 48 hour detailed Surf Forecast

How big are the waves at Big Rock today (21 Jul):

Short Range Forecast

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