Derde Steen 48 hour detailed Surf Forecast

Lat Long: 33.76° S 18.44° E

Issued: 7 am 18 Sep 2026 (local time)

Forecast update in hr min

Today's Derde Steen sea temperature is

11.7°C

Derde Steen 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 Derde Steen today (18 Sep):

Morning surf: Morning surf (18 Sep, local time) - 5ft (1.6m), 11s period with SW swell.
Afternoon surf: Afternoon surf (18 Sep, local time) - 5ft (1.6m), 12s period with SW swell.
Evening surf: Evening surf (18 Sep, local time) - 5ft (1.6m), 13s period with SW swell.

The current surf forecast for Derde Steen at 1PM is: 1.6m 11s primary swell from a Southwest direction and 0.1m 20s secondary swell from a West direction, 1.4m 7s secondary swell from a South-southeast direction (forecast issued at 07:00am September 18). The wind direction is predicted to be cross-offshore.

Time (SAST) & Date	Wave Height	Wave Period
Morning (18 Sep)	5ft (1.6m)	11s
Afternoon (18 Sep)	5ft (1.6m)	12s
Evening (18 Sep)	5ft (1.6m)	13s

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

	Short Range Forecast Mostly dry. Warm (max 27°C on Sun afternoon, min 11°C on Fri morning). Wind will be generally light.
	Friday 18							Saturday 19								Sunday 20
	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)	3	3	2	2	3	1	3	3	3	3	2	1	1	2	3	3	4	4	3	1	1	3	3
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SW 11	SW 11	SW 11	SW 11	SW 13	SW 13	SW 13	SW 12	SW 12	SW 12	SW 12	SW 12	SW 14	SW 14	SW 14	SW 13	SW 13	SW 13	SW 13	WSW 13	WSW 13	WSW 13	WSW 12
Wave Graph
kJ	652	640	640	600	796	796	784	748	657	646	514	355	978	1130	1324	1387	1452	1288	1110	1030	848	822	657
Wind (km/h)	ESE	ESE	SE	SE	ESE	SSE	SE	SE	ESE	E	SSE	S	S	SSE	SE	ESE	ESE	ESE	SE	S	S	SE	ESE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-off	cross-off	cross-off	cross-off	cross-off	cross	cross-off	cross-off	cross-off	cross-off	cross	cross	cross	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-on	cross	cross-off	cross-off
High Tide		7:10AM1.01m				7:30PM1.00m					8:48AM0.92m				9:37PM0.93m					11:20AM0.96m
Low Tide				1:03PM0.63m					2:02AM0.64m				2:56PM0.73m				4:47AM0.65m					5:47PM0.67m


	6:41	—	—	—	—	—	—	—	6:39	—	—	—	—	—	—	—	6:39	—	—	—	—	—	—
	—	—	—	—	6:38	—	—	—	—	—	—	—	6:39	—	—	—	—	—	—	—	6:39	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	11	11	15	20	21	17	15	13	13	13	18	21	21	19	17	17	17	17	23	27	26	23	20
Feels °C	8	8	10	15	17	13	12	10	11	11	15	18	19	17	14	15	15	15	22	25	24	22	19
Swell 1 Height (m) Direction Period (s)	SW 11	SW 11	SW 11	SW 11	SW 13	SW 13	SW 13	SW 12	SW 12	SW 12	SW 12	SW 12	SW 14	SW 14	SW 14	SW 13	SW 13	SW 13	SW 13	WSW 13	WSW 13	WSW 13	WSW 12
kJ	652	640	640	600	796	796	784	748	657	646	514	355	978	1130	1324	1387	1452	1288	1110	1030	848	822	657
Swell 2 Height (m) Direction Period (s)	—	—	W 20	W 20	SW 18	SW 18	WSW 18	SSE 8	SSE 8	SSE 8	SSE 6	SW 14	—	—	—	—	SSE 7	SSE 6	S 6	—	—	—	—
kJ	—	—	7	7	12	49	31	85	65	77	55	305	—	—	—	—	73	56	38	—	—	—	—
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	—	SW 16	SW 16	—	SW 15	—	—	—	—	—	—	—	—	—	—	—	—
kJ	—	—	—	—	—	—	—	41	127	—	217	—	—	—	—	—	—	—	—	—	—	—	—
Wind waves Height (m) Direction Period (s)	SSE 7	SSE 7	SSE 7	SSE 7	SSE 7	SSE 7	SSE 8	SSE 7	SSE 7	SSE 7	SSE 7	SSE 6	SSE 6	SSE 7	SSE 7	SSE 6	SSE 6	SSE 6	SSE 6	S 6	SSE 6	SSE 6	SSE 6
kJ	102	89	141	195	255	238	133	147	120	138	116	50	104	181	137	82	118	118	91	34	74	160	104
Nearest Offshore or Glassy	Derde Steen Cape Town	Derde Steen Cape Town	Beach Road Cape Town	Haakgat Cape Town	Derde Steen Cape Town	Beach Road Cape Town	Derde Steen Cape Town	Derde Steen Cape Town	Derde Steen Cape Town	Derde Steen Cape Town	Haakgat Cape Town	Koeel Bay Overberg	Haakgat Cape Town	Beach Road Cape Town	Beach Road Cape Town	Eerste Steen Cape Town	Derde Steen Cape Town	Derde Steen Cape Town	Derde Steen Cape Town	Beach Road Cape Town	Dumps Cape Town	Derde Steen Cape Town	Derde Steen Cape Town
Rating (10 max)	3	3	3	3	3	4	3	3	3	3	3	2	3	4	4	4	4	4	3	4	3	3	3
Distance (km)	0	0	3	1	0	3	0	0	0	0	1	61	1	3	3	1	0	0	0	3	14	0	0
Best forecast wave conditions in Cape Town	Kreefte Reef	Kreefte Reef	Kamer Van	Kamer Van	Van Riebeek	Beach Road	Captains	Captains	The Hoek	The Hoek	The Hoek		Beach Road	Captains	Kamer Van	Kamer Van	The Hoek	The Hoek	The Hoek	The Hoek	Dumps	Captains	Kreefte Reef
Rating (10 max)	3	3	3	3	4	4	3	4	3	3	3		3	4	4	4	4	4	4	4	3	3	3
Best forecast wave conditions in South Africa	Gerickes Point Garden Route	Gerickes Point Garden Route	Doring Bay West Coast	Pastures West Coast	Gerickes Point Garden Route	Gerickes Point Garden Route	Goukamma River Mouth Garden Route	Goukamma River Mouth Garden Route	Goukamma River Mouth Garden Route	Goukamma River Mouth Garden Route	Goukamma River Mouth Garden Route	Queensberry Bay Eastern Cape - Wild Coast	Queensberry Bay Eastern Cape - Wild Coast	Haga-Haga Eastern Cape - Wild Coast	Periwinkles Eastern Cape - Wild Coast	Goukamma River Mouth Garden Route	Goukamma River Mouth Garden Route	Haga-Haga Eastern Cape - Wild Coast	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Haga-Haga Eastern Cape - Wild Coast	Goukamma River Mouth Garden Route
Rating (10 max)	4	4	3	3	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4
Header Global	Otago Peninsula - Papanui Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Sandfly Bay New Zealand	Otago Peninsula - Allans Beach New Zealand	Weld Road New Zealand	El Huerto Spain	El Huerto Spain	Cathedral Rock Australia	Shingles New Zealand	Fairhaven Australia	Kaifu Rivermouth Japan	Trial Harbour Australia	Trial Harbour Australia	Easter Reef Australia	Asu Indonesia	Asu Indonesia	Gas Bay Australia	Easky Left Ireland	Papatowai New Zealand	Papatowai New Zealand	Cobblestones Australia	Shipwrecks Bay-Peaks New Zealand	Shipwrecks Bay-Peaks New Zealand
Rating (10 max)	5	5	5	4	6	5	5	5	5	5	5	8	8	5	4	4	5	5	9	9	6	8	8

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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Derde Steen 48 hour detailed Surf Forecast

How big are the waves at Derde Steen today (18 Sep):

Short Range Forecast

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