Twelve Mile Beach 48 hour detailed Surf Forecast

Lat Long: 33.95° S 120.32° E

Issued: 7 am 13 Sep 2026 (local time)

Forecast update in hr min

Today's Twelve Mile Beach sea temperature is

16.7°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 (13 Sep):

Morning surf: Morning surf (13 Sep, local time) - 3.5ft (1.1m), 9s period with SW swell.
Afternoon surf: Afternoon surf (13 Sep, local time) - 3.5ft (1.0m), 12s period with SSW swell.
Evening surf: Evening surf (13 Sep, local time) - 3.5ft (1.1m), 12s period with SW swell.

The current surf forecast for Twelve Mile Beach at 10AM is: 1.2m 14s primary swell from a Southwest direction and 0.2m 19s secondary swell from a South-southwest direction (forecast issued at 07:00am September 13). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (AWST) & Date	Wave Height	Wave Period
Morning (13 Sep)	3.5ft (1.1m)	9s
Afternoon (13 Sep)	3.5ft (1.0m)	12s
Evening (13 Sep)	3.5ft (1.1m)	12s

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

	Short Range Forecast Mostly dry. Very mild (max 18°C on Sun afternoon, min 11°C on Tue night). Winds increasing (light winds from the WNW on Sun night, fresh winds from the ESE by Tue afternoon).
	Sunday 13							Monday 14								Tuesday 15
	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)	1	1	1	0	0	3	4	3	3	0	0	0	0	0	1	1	2	2	2	1	0	1	2
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SSW 10	SW 9	SW 14	SSW 12	SSW 12	SW 12	SSW 17	SSW 15	SSW 15	SSW 13	SSW 16	SSW 15	SSW 15	SSW 14	SSW 14	SSW 14	SSW 14	SSW 14	SSW 15	SSW 15	SSW 14	SSW 14	SSW 14
Wave Graph
kJ	278	182	589	289	243	386	1094	1209	1309	824	1507	1689	1666	1600	1728	1240	1240	1130	1145	1091	1130	668	767
Wind (km/h)	WNW	WNW	WSW	SSW	SSE	WNW	WNW	W	SSW	SSE	SSE	SE	SE	ESE	E	E	ENE	ENE	ENE	E	ESE	E	ENE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-off	cross-off	cross	on	on	cross-off	cross-off	cross	on	on	cross-on	cross-on	cross-on	cross-on	cross	cross	cross-off	cross-off	cross-off	cross	cross	cross	cross-off
High Tide				11:24AM0.55m				11:36PM0.71m				11:23AM0.47m				11:50PM0.75m				11:13AM0.42m
Low Tide		5:43AM0.17m				5:12PM0.18m				6:12AM0.20m				5:02PM0.16m				6:39AM0.25m			4:55PM0.13m


	6:01	—	—	—	—	—	—	—	6:00	—	—	—	—	—	—	—	5:58	—	—	—	—	—	—
	—	—	—	—	5:47	—	—	—	—	—	—	—	5:47	—	—	—	—	—	—	—	5:49	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	11	12	16	18	17	17	16	16	16	15	14	14	14	14	13	13	12	12	14	16	16	16	14
Feels °C	7	8	12	15	14	15	14	14	14	11	10	9	9	9	7	7	6	6	8	10	9	10	8
Swell 1 Height (m) Direction Period (s)	SSW 10	SW 9	SW 14	SSW 12	SSW 12	SW 12	SSW 17	SSW 15	SSW 15	SSW 13	SSW 16	SSW 15	SSW 15	SSW 14	SSW 14	SSW 14	SSW 14	SSW 14	SSW 15	SSW 15	SSW 14	SSW 14	SSW 14
kJ	278	182	589	289	243	386	1094	1209	1309	824	1507	1689	1666	1600	1728	1240	1240	1130	1145	1091	1130	668	767
Swell 2 Height (m) Direction Period (s)	SSW 14	SSW 14	SSW 19	SSW 14	SW 14	SSW 18	—	—	SSW 16	SSW 16	—	—	—	—	—	SW 21	SSW 21	—	SSW 19	SW 19	SSW 15	SSW 17	SSW 18
kJ	180	180	37	78	50	121	—	—	447	402	—	—	—	—	—	18	45	—	143	183	869	464	270
Swell 3 Height (m) Direction Period (s)	SE 7	SW 20	E 7	SW 19	SW 18	E 6	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	SW 18	—
kJ	2	15	1	88	81	1	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	316	—
Wind waves Height (m) Direction Period (s)	—	WNW 3	SW 9	—	—	—	NW 2	—	—	—	—	—	SE 3	SE 4	ESE 5	ESE 5	E 5	ESE 5	ESE 5	ESE 5	ESE 6	ESE 6	ESE 6
kJ	—	3	307	—	—	—	1	—	—	—	—	—	6	26	33	39	51	58	74	97	177	213	156
Nearest Offshore or Glassy	Crazies WA - Far South	Mylies Beach WA - Far South	Mylies Beach WA - Far South	Bremer Bay WA - Far South	Bremer Bay WA - Far South	Bremer Bay WA - Far South	Bremer Bay WA - Far South	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	Bunbury Bay WA - Perth South	Bay Left Wall WA - Perth South	Bunbury Bay WA - Perth South	Bunbury Bay WA - Perth South	Bay Left Wall WA - Perth South	Cable Station Reef WA - Perth City	Bay Left Wall WA - Perth South	Bay Left Wall WA - Perth South	Bay Left Wall WA - Perth South	Bay Left Wall WA - Perth South	Bunbury Bay WA - Perth South
Rating (10 max)	3	2	2	2	2	1	2	2	4	4	4	4	4	4	4	4	4	4	4	4	4	3	3
Distance (km)	20	34	34	97	97	97	97	0	0	0	0	137	440	439	440	440	439	479	439	439	439	439	440
Best forecast wave conditions in Far South of Western Australia	Rocky Head	Lowlands Beach	Rocky Head	Ocean Beach	Cheynes Point	Cheynes Point	Cheynes Point	Cheynes Point	Cyclops	Wylie Bay	Cape Arid	Bandy Creek groyne
Rating (10 max)	4	6	4	3	2	2	2	3	4	4	4	4
Best forecast wave conditions in Australia	Remarkable Caves TAS - East Coast	Lowlands Beach WA - Far South	Remarkable Caves TAS - East Coast	Remarkable Caves TAS - East Coast	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	Conto Springs WA - Margaret River	The Spot WA - Perth City	Conto Springs WA - Margaret River	Noises WA - Margaret River	Noises WA - Margaret River	Pea Break WA - Margaret River	Surfers Point WA - Margaret River	Surfers Point WA - Margaret River	Surfers Point WA - Margaret River	Surfers Point WA - Margaret River	Surfers Point WA - Margaret River	Surfers Point WA - Margaret River	Bunker Bay Bommie WA - Margaret River	Surfers Point WA - Margaret River
Rating (10 max)	4	6	4	4	4	4	4	4	4	6	5	6	6	6	5	6	6	5	5	5	5	4	5
Header Global	Asu Indonesia	Asu Indonesia	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Mangahume New Zealand	Papatowai New Zealand	Frigates Fiji	Fish Boma South Africa	Fish Boma South Africa	Papatowai New Zealand	Cobblestones Australia	Noises Australia	Restaurants Fiji	Frigates Fiji	Gas Bay Australia	Cintsa West South Africa	Hole-in-the-Wall South Africa	Cobblestones Australia	Cobblestones Australia	Supertubes Australia	Gas Bay Australia
Rating (10 max)	5	5	9	9	9	8	7	6	5	5	5	5	6	6	5	6	6	6	8	5	5	5	5

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

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Twelve Mile Beach 48 hour detailed Surf Forecast

How big are the waves at Twelve Mile Beach today (13 Sep):

Short Range Forecast

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