Thermopylae 48 hour detailed Surf Forecast

Lat Long: 33.90° S 18.40° E

Issued: 7 am 19 Sep 2026 (local time)

Forecast update in hr min

Today's Thermopylae sea temperature is

12.2°C

Thermopylae 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 Thermopylae today (19 Sep):

Morning surf: Morning surf (19 Sep, local time) - 5ft (1.5m), 12s period with SW swell.
Afternoon surf: Afternoon surf (19 Sep, local time) - 4.5ft (1.3m), 12s period with SW swell.
Evening surf: Evening surf (19 Sep, local time) - 6ft (1.9m), 14s period with SW swell.

The current surf forecast for Thermopylae at 1PM is: 1.3m 12s primary swell from a Southwest direction and 0.9m 14s secondary swell from a Southwest direction, 1.1m 6s secondary swell from a South-southeast direction (forecast issued at 07:00am September 19). The wind direction is predicted to be cross-offshore and the swell rating is 3.

Time (SAST) & Date	Wave Height	Wave Period
Morning (19 Sep)	5ft (1.5m)	12s
Afternoon (19 Sep)	4.5ft (1.3m)	12s
Evening (19 Sep)	6ft (1.9m)	14s

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

	Short Range Forecast Mostly dry. Warm (max 27°C on Mon afternoon, min 14°C on Sat morning). Wind will be generally light.
	Saturday 19							Sunday 20								Monday 21
	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	3	3	3	3	3	4	4	4	4	3	3	3	3	3	3	2	2	1	1	3	3
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SW 12	SW 12	SW 12	SW 12	SW 14	SW 14	SW 14	SW 13	SW 13	SW 13	SW 13	SW 13	WSW 13	WSW 13	WSW 12	WSW 12	WSW 12	WSW 12	WSW 12	WSW 12	WSW 11	WSW 11	SW 11
Wave Graph
kJ	712	700	448	448	1063	1423	1527	1591	1452	1367	1288	1094	998	809	784	636	545	472	472	371	347	329	314
Wind (km/h)	SE	ESE	SSE	SSE	SSE	SSE	SE	SE	ESE	SE	SE	SSW	S	SSE	SE	SE	SE	SE	SSE	SSW	S	SSE	E
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-off	off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross	cross	cross-off	off
High Tide			8:50AM1.17m				9:28PM1.15m					11:21AM1.20m				11:45PM1.20m				12:29PM1.32m
Low Tide	2:06AM0.84m				3:12PM0.95m				4:29AM0.87m					5:44PM0.89m				6:01AM0.79m				6:43PM0.77m


	6:41	—	—	—	—	—	—	—	6:39	—	—	—	—	—	—	—	6:37	—	—	—	—	—	—
	—	—	—	—	6:39	—	—	—	—	—	—	—	6:39	—	—	—	—	—	—	—	6:40	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	14	14	18	20	19	20	18	17	17	18	23	25	24	22	20	19	19	19	24	27	27	26	24
Feels °C	12	12	16	17	16	18	16	15	15	16	22	23	23	21	19	18	18	18	24	26	26	25	24
Swell 1 Height (m) Direction Period (s)	SW 12	SW 12	SW 12	SW 12	SW 14	SW 14	SW 14	SW 13	SW 13	SW 13	SW 13	SW 13	WSW 13	WSW 13	WSW 12	WSW 12	WSW 12	WSW 12	WSW 12	WSW 12	WSW 11	WSW 11	SW 11
kJ	712	700	448	448	1063	1423	1527	1591	1452	1367	1288	1094	998	809	784	636	545	472	472	371	347	329	314
Swell 2 Height (m) Direction Period (s)	SW 16	—	SW 14	SW 14	—	—	—	—	—	—	SSE 6	—	—	—	—	—	—	—	—	SSE 6	SSW 15	SSE 6	SW 14
kJ	127	—	301	350	—	—	—	—	—	—	55	—	—	—	—	—	—	—	—	53	87	44	167
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	SW 15	—	SSW 14	SSE 6
kJ	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	57	—	140	35
Wind waves Height (m) Direction Period (s)	SSE 7	SSE 6	SSE 6	SSE 6	SSE 6	SSE 6	SSE 6	SSE 6	SSE 6	SSE 6	SE 6	SSE 6	SSE 5	SSE 6	SSE 6	SSE 6	SSE 6	SSE 6	SSE 6	SE 6	SSE 6	SE 6	—
kJ	91	80	60	115	190	202	164	115	88	72	119	34	55	119	127	154	91	66	68	128	44	113	—
Nearest Offshore or Glassy	Thermopylae Cape Town	Thermopylae Cape Town	Thermopylae Cape Town	Thermopylae Cape Town	Baboon Point West Coast	Off The Wall Cape Town	Off The Wall Cape Town	Thermopylae Cape Town	Thermopylae Cape Town	Thermopylae Cape Town	Thermopylae Cape Town	Off The Wall Cape Town	Thermopylae Cape Town	Thermopylae Cape Town	Thermopylae Cape Town	Thermopylae Cape Town	Thermopylae Cape Town	Thermopylae Cape Town	Thermopylae Cape Town	Off The Wall Cape Town	Off The Wall Cape Town	Thermopylae Cape Town	Thermopylae Cape Town
Rating (10 max)	3	3	3	3	2	4	4	4	4	4	4	4	3	3	3	3	3	2	2	2	2	3	3
Distance (km)	0	0	0	0	174	1	1	0	0	0	0	1	0	0	0	0	0	0	0	1	1	0	0
Best forecast wave conditions in Cape Town	Kreefte Reef	Kreefte Reef	The Hoek	The Hoek		Kreefte Reef	Kreefte Reef	Kreefte Reef	Kreefte Reef	Kreefte Reef	Kreefte Reef	Sollys	Beach Road	Captains	Kreefte Reef	Kreefte Reef	Kreefte Reef	Van Riebeek	Van Riebeek	The Hoek	The Hoek	The Hoek	The Hoek
Rating (10 max)	3	3	3	3		4	4	4	4	4	4	4	4	3	3	3	3	3	3	2	2	3	3
Best forecast wave conditions in South Africa	Fish Boma Garden Route	Fish Boma Garden Route	Morgans Bay Eastern Cape - Wild Coast	Morgans Bay Eastern Cape - Wild Coast	Periwinkles Eastern Cape - Wild Coast	Hole-in-the-Wall Eastern Cape - Wild Coast	Fish Boma Garden Route	Fish Boma Garden Route	Fish Boma 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	Fish Boma Garden Route	Haga-Haga Eastern Cape - Wild Coast	Haga-Haga Eastern Cape - Wild Coast	Fish Boma Garden Route	Gerickes Point Garden Route	Sea Vista Eastern Cape (S)	Gerickes Point Garden Route	Gerickes Point Garden Route	Fish Boma Garden Route
Rating (10 max)	4	3	4	3	3	4	4	4	4	4	4	4	4	4	4	3	3	3	3	3	2	3	3
Header Global	Shingles New Zealand	Afife Portugal	Kaifu Rivermouth Japan	Trial Harbour Australia	Trial Harbour Australia	Easter Reef Australia	Asu Indonesia	Asu Indonesia	Cobblestones 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	Shipwrecks Bay-Peaks New Zealand	Ahijedero Mexico	Papatowai New Zealand	Ouano Lefts New Caledonia	Easter Reef Australia	Easter Reef Australia
Rating (10 max)	5	4	5	8	8	5	4	4	5	9	9	9	7	8	8	5	5	5	4	7	6	8	9

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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Thermopylae 48 hour detailed Surf Forecast

How big are the waves at Thermopylae today (19 Sep):

Short Range Forecast

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