Arniston 48 hour detailed Surf Forecast

Lat Long: 34.69° S 20.23° E

Issued: 7 am 21 Oct 2026 (local time)

Forecast update in hr min

Today's Arniston sea temperature is

16.9°C

Arniston 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 Arniston today (21 Oct):

Morning surf: Morning surf (21 Oct, local time) - 6ft (1.9m), 12s period with SW swell.
Afternoon surf: Afternoon surf (21 Oct, local time) - 5ft (1.6m), 12s period with SW swell.
Evening surf: Evening surf (21 Oct, local time) - 5ft (1.5m), 12s period with SW swell.

The current surf forecast for Arniston at 3PM is: 1.6m 12s primary swell from a Southwest direction and 0.9m 13s secondary swell from a South-southwest direction, 0.3m 10s secondary swell from a East-southeast direction (forecast issued at 07:00am October 21). The wind direction is predicted to be cross-offshore.

Time (SAST) & Date	Wave Height	Wave Period
Morning (21 Oct)	6ft (1.9m)	12s
Afternoon (21 Oct)	5ft (1.6m)	12s
Evening (21 Oct)	5ft (1.5m)	12s

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

	Short Range Forecast Mostly dry. Very mild (max 18°C on Wed afternoon, min 13°C on Thu night). Winds decreasing (strong winds from the W on Wed afternoon, calm by Fri night).
	Wednesday 21							Thursday 22								Friday 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)	1	2	1	1	0	1	1	2	0	0	0	0	1	!	3	3	4	2	0	0	0	2	2
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SW 12	SW 12	SW 12	SW 12	SW 12	SW 12	SW 12	SW 12	SSW 12	SW 12	SW 12	SW 11	SW 11	SW 11	SSW 11	SSW 12	SSW 12	SSW 12	SSW 12	SSW 12	SSW 11	SSW 11	SSW 11
Wave Graph
kJ	878	1060	925	808	884	625	666	558	449	687	699	675	626	1151	698	857	1033	1090	953	805	603	503	415
Wind (km/h)	WNW	W	W	W	WSW	WSW	W	W	W	WSW	WSW	WSW	SW	SW	WSW	WNW	N	NE	ENE	E	E	E	NW
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	off	off	off	cross-off	cross-off	cross-off	cross-off	off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	off	cross-off	cross-on	cross-on	cross-on	cross-on	on	glassy
High Tide				12:16PM1.48m				00:34AM1.44m				12:49PM1.65m				1:09AM1.58m				1:21PM1.81m
Low Tide		5:58AM0.60m				6:36PM0.53m				6:35AM0.47m				7:07PM0.36m				7:09AM0.34m				7:39PM0.19m


	5:50	—	—	—	—	—	—	—	5:48	—	—	—	—	—	—	—	5:47	—	—	—	—	—	—
	—	—	—	—	6:57	—	—	—	—	—	—	—	6:58	—	—	—	—	—	—	—	6:59	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	17	17	16	18	17	15	15	16	15	15	16	17	16	15	14	14	13	13	15	17	16	16	16
Feels °C	10	10	9	11	10	9	10	11	9	8	8	9	9	10	11	13	12	10	11	13	12	15	16
Swell 1 Height (m) Direction Period (s)	SW 12	SW 12	SW 12	SSW 13	ESE 10	SW 12	ESE 9	SW 12	SSW 12	ESE 9	ESE 9	ESE 9	ESE 9	SSW 11	SSW 11	SSW 12	SSW 12	SSW 12	SSW 12	SSW 12	SSW 11	SSW 11	SSW 11
kJ	878	1060	925	303	19	625	17	558	449	17	8	8	9	651	698	857	1033	1090	953	805	603	503	415
Swell 2 Height (m) Direction Period (s)	ESE 8	E 8	ESE 11	ESE 10	E 10	ESE 9	E 9	ESE 9	ESE 9	E 9	E 9	E 8	E 9	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	E 4	E 4
kJ	13	12	22	20	2	17	2	17	17	2	2	1	1	9	9	11	10	10	10	9	9	7	8
Swell 3 Height (m) Direction Period (s)	—	SE 11	—	—	—	—	—	—	E 9	—	—	—	—	—	ESE 10	ESE 11	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10
kJ	—	5	—	—	—	—	—	—	2	—	—	—	—	—	10	11	11	10	10	10	19	9	9
Wind waves Height (m) Direction Period (s)	WNW 3	WNW 4	WSW 4	SW 12	SW 12	WSW 4	SW 12	W 4	W 4	SW 12	SW 12	SW 11	SW 11	SW 11	—	—	—	—	—	E 3	E 3	—	—
kJ	12	18	25	808	884	21	666	13	18	687	699	675	626	1151	—	—	—	—	—	2	6	—	—
Nearest Offshore or Glassy	Dolphin Point Overberg	Stillbaai Overberg	Muizenberg Cape Town	Muizenberg Cape Town	Buffels Bay Cape Town	Nine Mile Reef Cape Town	Monwabisi Strand Cape Town	Dolphin Point Overberg	Dolphin Point Overberg	Nine Mile Reef Cape Town	Buffels Bay Cape Town	Black Rocks Cape Town	Cemetery Cape Town	Pringle Bay Overberg	Arniston Overberg	Arniston Overberg	Arniston Overberg	De Kelders Overberg	De Kelders Overberg	Gansbaai Overberg	Pearly Beach Overberg	Onrus Overberg	Arniston Overberg
Rating (10 max)	4	4	4	4	3	3	3	4	4	3	2	3	3	3	3	3	4	4	4	4	3	3	2
Distance (km)	113	115	174	174	167	160	149	113	113	160	167	168	168	135	0	0	0	81	81	83	76	103	0
Best forecast wave conditions in Overberg	Dolphin Point	Vleesbaai						Dolphin Point	Kanon					Pringle Bay	Gourits Mouth	Dolphin Point	Vleesbaai	Vleesbaai	Onrus	Gansbaai	Kleinmond	Onrus	Bettys Bay
Rating (10 max)	4	4						4	4					3	4	4	4	4	4	4	4	3	3
Best forecast wave conditions in South Africa	Goukamma River Mouth Garden Route	Fish Boma Garden Route	Hout Bay Cape Town	Hout Bay Cape Town	Hout Bay Cape Town	Haga-Haga Eastern Cape - Wild Coast	Riet River Eastern Cape (S)	Haga-Haga Eastern Cape - Wild Coast	Whispering Waves Eastern Cape - Wild Coast	Whispering Waves Eastern Cape - Wild Coast	Hout Bay Cape Town	Hout Bay Cape Town	Stompneus West Coast	Cape St Martin West Coast	Cape St Martin West Coast	Super Tubes Eastern Cape (S)	Fish Boma Garden Route	Fish Boma Garden Route	Gerickes Point Garden Route	Gansbaai Overberg	Gerickes Point Garden Route	Goukamma River Mouth Garden Route	Goukamma River Mouth Garden Route
Rating (10 max)	4	4	4	4	4	9	8	7	5	4	3	3	3	4	4	4	4	4	4	4	4	4	4
Header Global	Virac Harbour Philippines	Virac Harbour Philippines	Super Tubes South Africa	Lucky Point Philippines	Lucky Point Philippines	Haga-Haga South Africa	Riet River South Africa	Haga-Haga South Africa	Baler - Lindy's Point Philippines	Easter Reef Australia	Trial Harbour Australia	Keusik Luhur Indonesia	Batu Hiu Indonesia	Benkunqut Indonesia	Bali Village Indonesia	Luna Park Australia	Boneyards South Africa	Papatowai New Zealand	Cavalos de Fao Portugal	Benkunqut Indonesia	Benkunqut Indonesia	Bali Village Indonesia	Asu Indonesia
Rating (10 max)	6	6	6	9	9	9	8	7	6	5	6	7	5	6	6	6	5	8	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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Arniston 48 hour detailed Surf Forecast

How big are the waves at Arniston today (21 Oct):

Short Range Forecast

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