Dias Beach 48 hour detailed Surf Forecast

Lat Long: 34.35° S 18.49° E

Issued: 7 am 20 Sep 2026 (local time)

Forecast update in hr min

Today's Dias Beach sea temperature is

13.6°C

Dias 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 Dias Beach today (20 Sep):

Morning surf: Morning surf (20 Sep, local time) - 7ft (2.2m), 13s period with SW swell.
Afternoon surf: Afternoon surf (20 Sep, local time) - 6.5ft (2.0m), 13s period with WSW swell.
Evening surf: Evening surf (20 Sep, local time) - 5.5ft (1.7m), 12s period with WSW swell.

The current surf forecast for Dias Beach at 1PM is: 2.0m 13s primary swell from a West-southwest direction and 1.5m 6s secondary swell from a Southeast direction (forecast issued at 07:00am September 20). The wind direction is predicted to be cross-onshore.

Time (SAST) & Date	Wave Height	Wave Period
Morning (20 Sep)	7ft (2.2m)	13s
Afternoon (20 Sep)	6.5ft (2.0m)	13s
Evening (20 Sep)	5.5ft (1.7m)	12s

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

	Short Range Forecast Mostly dry. Warm (max 25°C on Tue morning, min 16°C on Sun morning). Winds decreasing (strong winds from the SE on Sun night, calm by Tue morning).
	Sunday 20							Monday 21								Tuesday 22
	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	1	0	0	0	0	0	0	0	0	0	0	1	1	2	3	3	0	3	3	0
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SW 13	SW 13	WSW 13	WSW 13	WSW 13	WSW 13	WSW 12	WSW 12	WSW 12	WSW 12	WSW 12	WSW 12	SW 11	WSW 11	SW 11	SW 14	SW 11	SW 13	SW 13	SW 12	SW 12	SW 12	SW 11
Wave Graph
kJ	1804	1684	1401	1289	1100	953	857	759	616	536	536	456	373	329	314	280	303	394	424	379	494	486	384
Wind (km/h)	ESE	ESE	SE	SE	SE	SE	SE	SE	SE	ESE	ESE	SE	SE	ESE	ESE	ESE	E	ENE	NNE	SW	ENE	WNW	WNW
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross	cross	cross	cross	cross-on	cross-on	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross	cross-off	cross-off	glassy	on	cross-off	cross-off	cross
High Tide				11:22AM0.95m				11:39PM0.99m				12:27PM1.07m				00:35AM1.10m				1:03PM1.21m
Low Tide	4:46AM0.66m					5:46PM0.68m				6:12AM0.56m				6:42PM0.56m				6:53AM0.44m				7:17PM0.43m


	6:39	—	—	—	—	—	—	—	6:37	—	—	—	—	—	—	—	6:35	—	—	—	—	—	—
	—	—	—	—	6:39	—	—	—	—	—	—	—	6:40	—	—	—	—	—	—	—	6:42	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	16	16	18	21	19	18	17	16	16	16	18	22	23	23	21	19	20	23	25	21	20	21	19
Feels °C	11	11	13	16	14	11	11	11	10	10	13	18	19	20	19	17	19	22	26	20	20	20	17
Swell 1 Height (m) Direction Period (s)	SW 13	SW 13	WSW 13	WSW 13	WSW 13	WSW 13	WSW 12	WSW 12	WSW 12	WSW 12	WSW 12	WSW 12	SW 11	WSW 11	SW 11	SW 11	SW 11	SW 13	SW 13	SW 12	SW 12	SW 12	SW 11
kJ	1804	1684	1401	1289	1100	953	857	759	616	536	536	456	373	329	314	268	303	394	424	379	494	486	384
Swell 2 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	SSW 15	SW 15	SSW 15	SW 14	SW 14	SW 14	SW 13	ESE 6	ESE 6	WSW 11	ESE 7	ESE 8	ESE 8
kJ	—	—	—	—	—	—	—	—	—	—	45	57	146	214	211	280	215	67	51	88	36	39	40
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	WSW 11	WSW 11	WSW 11	ESE 6	S 6	SSE 6	S 14
kJ	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	173	135	117	28	7	7	14
Wind waves Height (m) Direction Period (s)	ESE 5	ESE 6	SE 5	SE 6	SE 6	SE 6	SE 6	ESE 6	SE 6	ESE 6	SE 6	SE 6	SE 6	ESE 6	ESE 6	ESE 6	SE 6	ESE 6	—	WNW 3	W 3	SW 3	SW 4
kJ	133	154	143	145	209	252	189	164	182	188	220	222	275	293	190	136	109	125	—	7	6	2	10
Nearest Offshore or Glassy	Inner Kom Cape Town	Inner Kom Cape Town	Noordhoek Cape Town	Noordhoek Cape Town	Noordhoek Cape Town	Koeel Bay Overberg	Koeel Bay Overberg	Noordhoek Cape Town	The Hoek Cape Town	Boneyards Cape Town	Inner Kom Cape Town	Inner Kom Cape Town	Inner Kom Cape Town	Olifants Bos Cape Town	Olifants Bos Cape Town	Underwater Point Cape Town	Underwater Point Cape Town	Dias Beach Cape Town	Dias Beach Cape Town	Buffels Bay Cape Town	Dias Beach Cape Town	Dias Beach Cape Town	Buffels Bay Cape Town
Rating (10 max)	4	4	4	4	4	2	1	3	3	3	2	2	2	2	3	3	3	3	3	1	3	3	1
Distance (km)	28	28	29	29	29	35	35	29	32	29	28	28	28	15	15	2	2	0	0	4	0	0	4
Best forecast wave conditions in Cape Town	Kreefte Reef	Kreefte Reef	Captains	Beach Road	Big Bay	Captains	Kreefte Reef	Kreefte Reef	Kreefte Reef	Van Riebeek	Captains	Beach Road	Noordhoek	The Hoek	The Hoek	The Hoek	The Hoek	Van Riebeek	Bali Bay (Glen Reef)	Glencairn	Sunset	Dias Beach	Hout Bay
Rating (10 max)	4	4	4	4	4	3	3	3	3	3	3	3	3	3	3	3	3	3	3	1	3	3	2
Best forecast wave conditions in South Africa	Goukamma River Mouth Garden Route	Haga-Haga Eastern Cape - Wild Coast	Yellow sands Point Eastern Cape - Wild Coast	Gerickes Point Garden Route	Gerickes Point Garden Route	Haga-Haga Eastern Cape - Wild Coast	Goukamma River Mouth Garden Route	Haga-Haga Eastern Cape - Wild Coast	Haga-Haga Eastern Cape - Wild Coast	Goukamma River Mouth Garden Route	Kleinemonde Eastern Cape (S)	Beach Road Cape Town	Strandfontein West Coast	Van Stadens Mouth Eastern Cape (S)	Haga-Haga Eastern Cape - Wild Coast	Goukamma River Mouth Garden Route	Goukamma River Mouth Garden Route	Goukamma River Mouth Garden Route	Fish Boma Garden Route	Goukamma River Mouth Garden Route	Fish Boma Garden Route	Goukamma River Mouth Garden Route	Vleesbaai Overberg
Rating (10 max)	4	4	4	4	4	4	4	3	3	3	3	3	3	3	3	3	3	3	3	3	3	3	2
Header Global	Gas Bay Australia	Nine Mile New Zealand	Papatowai New Zealand	Papatowai New Zealand	Shipwrecks Bay-Peaks New Zealand	Shipwrecks Bay-Peaks New Zealand	Shipwreck Bay-Supertubes New Zealand	Cyclops Australia	Cyclops Australia	Ahijedero Mexico	Shipwrecks Bay-Peaks New Zealand	Papatowai New Zealand	Ouano Lefts New Caledonia	Easter Reef Australia	Easter Reef Australia	Cobblestones Australia	Quarantine Australia	Dunedin - Cob Cottage New Zealand	Frigates Fiji	Trial Harbour Australia	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand
Rating (10 max)	5	8	9	9	7	8	8	5	5	4	5	5	6	8	9	5	6	5	5	9	9	9	8

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

Six Sun-Soaked Summer Surf Spots: Backed by 20 years of Swell and Wind Stats (and with our 20% Summer Subscription Sale)

Ben Mondy

Summer School: The Timeline of The Boardshort

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Dias Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

Dias Beach 48 hour detailed Surf Forecast

How big are the waves at Dias Beach today (20 Sep):

Short Range Forecast

Latest Updates

Road Testing the new Db Surf Roller Pro

Summer's Short. Life Is Long.

Roadsurfing in the Basque country

Six Sun-Soaked Summer Surf Spots: Backed by 20 years of Swell and Wind Stats (and with our 20% Summer Subscription Sale)

Summer School: The Timeline of The Boardshort

FREE! Surf-Forecast.com widget for your website