Twelve Mile Beach 48 hour detailed Surf Forecast

Lat Long: 33.95° S 120.32° E

Issued: 1 am 20 Jul 2026 (local time)

Forecast update in hr min

Today's Twelve Mile Beach sea temperature is

17.4° C

Twelve Mile Beach 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 Twelve Mile Beach today (20 Jul):

Morning surf: Morning surf (20 Jul, local time) - 5.5ft (1.7m), 13s period with SSW swell.
Afternoon surf: Afternoon surf (20 Jul, local time) - 4.5ft (1.4m), 12s period with SSW swell.
Evening surf: Evening surf (20 Jul, local time) - 4.5ft (1.4m), 13s period with SSW swell.

The current surf forecast for Twelve Mile Beach at 8AM is: 1.7m 13s primary swell from a South-southwest direction and 0.1m 18s secondary swell from a Southeast direction (forecast issued at 01:00am July 20). The wind direction is predicted to be cross-offshore and the swell rating is 3.

Time (AWST) & Date	Wave Height	Wave Period
Morning (20 Jul)	5.5ft (1.7m)	13s
Afternoon (20 Jul)	4.5ft (1.4m)	12s
Evening (20 Jul)	4.5ft (1.4m)	13s

Table - waves today at Twelve Mile Beach. (Swell directed towards the surf break)

	Short Range Forecast Light rain (total 2mm), mostly falling on Wed morning. Very mild (max 16°C on Mon night, min 12°C on Mon morning). Wind will be generally light.
	Monday 20								Tuesday 21								Wednesday 22
	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	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM
Rating (10 max)	4	4	3	3	1	1	1	1	2	1	2	0	0	0	0	0	0	1	2	!	0	0	!	3
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SSW 14	SSW 13	SSW 13	SSW 12	SSW 13	SSW 14	SSW 13	SSW 13	SSW 12	SSW 14	SW 13	SSW 13	SSW 13	SSW 14	SSW 13	SSW 13	SSW 13	SSW 14	SSW 15	SSW 15	SSW 15	SSW 16	SSW 15	SSW 15
Wave Graph
kJ	1161	1026	867	839	894	347	769	659	481	752	1457	943	914	1068	965	878	968	1517	2478	3164	3706	3905	3609	3156
Wind (km/h)	N	N	NW	WNW	SW	SSW	W	W	W	W	W	WSW	SW	SSW	SSW	SSW	S	SSW	SSW	S	S	S	SSE	SSE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	off	off	cross-off	cross-off	cross-on	cross-on	cross	cross	cross-off	cross	cross	cross-on	cross-on	cross-on	cross-on	cross-on	on	on	on	on	on	on	on	cross-on
High Tide	1:41AM0.48m				11:55AM0.51m					2:15AM0.53m			11:04AM0.48m					3:12AM0.56m
Low Tide			6:47AM0.39m				7:00PM0.21m				7:42AM0.46m				6:40PM0.17m								6:26PM0.14m


	—	6:58	—	—	—	—	—	—	—	6:58	—	—	—	—	—	—	—	6:58	—	—	—	—	—	—
	—	—	—	—	—	5:09	—	—	—	—	—	—	—	5:10	—	—	—	—	—	—	—	5:10	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	1	1	—	—	—
Temp °C	13	13	12	14	15	15	16	14	13	12	12	14	15	14	14	14	13	14	14	14	14	13	13	13
Feels °C	9	9	9	10	11	12	11	9	8	7	8	9	9	8	9	9	9	9	10	10	9	8	8	8
Swell 1 Height (m) Direction Period (s)	SSW 14	SSW 13	SSW 13	SSW 12	SSW 13	SSW 11	SSW 13	SSW 13	SSW 12	SSW 14	SSW 13	SSW 13	SSW 13	SSW 14	SSW 13	SSW 13	SSW 13	SSW 14	SSW 15	SSW 15	SSW 15	SSW 16	SSW 15	SSW 15
kJ	1161	1026	867	839	894	340	769	659	481	752	756	943	914	1068	965	878	968	1517	2478	3164	3706	3905	3609	3156
Swell 2 Height (m) Direction Period (s)	SE 18	SE 18	SE 18	SE 18	SE 18	SSW 14	S 17	S 17	SSW 15	SE 17	SE 17	SE 16	SE 16	SE 16	SSE 16	SE 16	S 15	SSE 15	SE 15	SE 15	SE 15	SE 15	SE 14	SE 14
kJ	13	13	12	12	12	347	6	6	125	12	11	10	10	10	25	10	5	23	9	9	8	8	8	8
Swell 3 Height (m) Direction Period (s)	—	—	—	—	SE 18	SE 18	SE 18	SSE 17	SE 17	SE 18	—	—	—	SSE 16	—	—	—	—	—	—	—	—	—	—
kJ	—	—	—	—	12	12	12	30	12	12	—	—	—	25	—	—	—	—	—	—	—	—	—	—
Wind waves Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	SW 13	—	—	—	—	—	—	—	—	—	—	—	—	—
kJ	—	—	—	—	—	—	—	—	—	—	1457	—	—	—	—	—	—	—	—	—	—	—	—	—
Nearest Offshore or Glassy	Twelve Mile Beach WA - Far South	Twelve Mile Beach WA - Far South	Twelve Mile Beach WA - Far South	Twelve Mile Beach WA - Far South	NIne Mile Beach WA - Far South	Bremer Bay WA - Far South	Bremer Bay WA - Far South	Bremer Bay WA - Far South	Bremer Bay WA - Far South	Cheynes Point WA - Far South	Cheynes Point WA - Far South	Bunbury The Wall WA - Perth South	Bunbury The Wall WA - Perth South	Cheynes Point WA - Far South	Cheynes Point WA - Far South	Cheynes Point WA - Far South	Cheynes Point WA - Far South	Cheynes Point WA - Far South	Cheynes Point WA - Far South	Bay Left Wall WA - Perth South	Bay Left Wall WA - Perth South	Bunbury Bay WA - Perth South	Conspicuous Beach WA - Far South	Lowlands Beach WA - Far South
Rating (10 max)	4	4	3	3	3	3	2	2	2	4	4	2	2	3	3	3	3	4	4	3	3	3	5	5
Distance (km)	0	0	0	0	137	97	97	97	97	153	153	439	439	153	153	153	153	153	153	439	439	440	340	288
Best forecast wave conditions in Far South of Western Australia	Cyclops	Cyclops	Cyclops	Cyclops	Cyclops	Cyclops	Cyclops	Cyclops	Ocean Beach	Cheynes Point	Cheynes Point			Cheynes Point	Cheynes Point	Cheynes Point	Cheynes Point	Cheynes Point	Cheynes Point				Conspicuous Beach	Hush Hush Beach
Rating (10 max)	4	4	4	4	4	4	4	3	4	4	4			3	3	3	3	4	4				5	5
Best forecast wave conditions in Australia	Crackneck NSW - Newcastle	Luna Park VIC - Far West	JD Reef NSW - Newcastle	Cyclops WA - Far South	Cyclops WA - Far South	Ulladulla Bommie NSW - South Coast	Luna Park VIC - Far West	Snapper Rocks QLD - Gold Coast	Snapper Rocks QLD - Gold Coast	Douglas Point SA - East Coast	Luna Park VIC - Far West	Noosa - Tea Tree Bay QLD - Sunshine Coast	Easter Reef VIC - Far West	Luna Park VIC - Far West	Luna Park VIC - Far West	Surfers Point WA - Margaret River	Surfers Point WA - Margaret River	Surfers Point WA - Margaret River	Redgate WA - Margaret River	Surfers Point WA - Margaret River	Surfers Point WA - Margaret River	Conto Springs WA - Margaret River	Bancoora VIC - Torquay	Surfers Point WA - Margaret River
Rating (10 max)	4	4	4	4	4	4	4	4	4	5	4	4	4	4	4	4	4	5	6	7	6	6	5	5
Header Global	Papatowai New Zealand	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	Ning Nong Point and Reef New Zealand	Ning Nong Point and Reef New Zealand	Ning Nong Point and Reef New Zealand	Last Chance New Zealand	Seconds (White Rock) New Zealand	Diners Beach New Zealand	Asu Indonesia	Papatowai New Zealand	Asu Indonesia	Aganoa Beach Samoa	Aganoa Beach Samoa	Bruces Beauties South Africa	Van Stadens Mouth South Africa	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Cobblestones Australia	Injidup Carpark Australia	Bancoora Australia	Cathedral Rock Australia
Rating (10 max)	7	6	5	5	7	6	5	5	5	5	4	5	4	4	4	4	5	5	5	7	6	5	5	6

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

Latest Updates

Ben Mondy

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Twelve Mile Beach 48 hour detailed Surf Forecast

How big are the waves at Twelve Mile Beach today (20 Jul):

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