J-Bay 48 hour detailed Surf Forecast

Lat Long: 34.05° S 24.93° E

Issued: 1 am 17 Sep 2026 (local time)

Forecast update in hr min

Today's J-Bay sea temperature is

14.9°C

J-Bay 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 J-Bay today (17 Sep):

Morning surf: Morning surf (17 Sep, local time) - 7ft (2.2m), 13s period with SW swell.
Afternoon surf: Afternoon surf (17 Sep, local time) - 7.5ft (2.3m), 12s period with SW swell.
Evening surf: Evening surf (17 Sep, local time) - 7ft (2.1m), 12s period with SW swell.

The current surf forecast for J-Bay at 4AM is: 2.0m 13s primary swell from a Southwest direction and 0.7m 10s secondary swell from a East direction, 2.3m 7s secondary swell from a South-southeast direction (forecast issued at 01:00am September 17). The wind direction is predicted to be onshore.

Time (SAST) & Date	Wave Height	Wave Period
Morning (17 Sep)	7ft (2.2m)	13s
Afternoon (17 Sep)	7.5ft (2.3m)	12s
Evening (17 Sep)	7ft (2.1m)	12s

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

	Short Range Forecast Light rain (total 2mm), mostly falling on Thu morning. Very mild (max 19°C on Sat afternoon, min 14°C on Thu morning). Winds decreasing (fresh winds from the ESE on Fri morning, calm by Sat afternoon).
	Thursday 17								Friday 18								Saturday 19
	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	2 AM	5 AM	8 AM	11 AM	2 PM	5 PM	8 PM	11 PM
Rating (10 max)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	1	3	3	2	2	3
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	SW 13	SW 13	SW 13	SW 13	SW 12	SW 12	SW 12	SW 12	SW 12	SW 12	SW 12	SW 12	SW 12	SW 11	SW 11	SW 13	SW 13	SW 13	SW 12	SW 12	SW 12	SW 12	SW 12	SW 12
Wave Graph
kJ	1474	1346	1619	1778	1575	1404	1189	1094	1013	1013	1013	997	980	675	866	1021	1021	851	730	706	624	614	603	486
Wind (km/h)	ESE	ESE	ESE	ESE	SE	ESE	ESE	ESE	ESE	ESE	ESE	ESE	E	E	ENE	E	ENE	ENE	NE	NNE	SE	E	ENE	ENE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	on	on	on	on	on	on	on	on	on	on	on	on	on	cross-on	cross-on	cross-on	cross-on	cross-on	cross-on	cross	on	on	cross-on	cross-on
High Tide			6:25AM1.24m				6:38PM1.24m				6:55AM1.09m				7:11PM1.09m				7:50AM0.95m					8:56PM0.95m
Low Tide	00:22AM0.40m				12:25PM0.48m				00:53AM0.54m				12:56PM0.63m				1:41AM0.68m				2:00PM0.77m


	—	6:16	—	—	—	—	—	—	—	6:16	—	—	—	—	—	—	—	6:13	—	—	—	—	—	—
	—	—	—	—	—	6:12	—	—	—	—	—	—	—	6:13	—	—	—	—	—	—	—	6:14	—	—
mm	2	4	1	—	—	1	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	14	14	14	15	15	15	16	16	15	16	16	16	16	17	16	15	15	15	15	17	19	19	18	18
Feels °C	9	8	9	11	10	9	11	11	9	10	10	9	10	11	11	10	10	12	13	16	19	18	17	18
Swell 1 Height (m) Direction Period (s)	SW 13	SW 13	SW 13	SW 13	SW 12	SW 12	SW 12	SW 12	SW 12	SW 12	SW 12	SW 12	SW 12	SW 11	SW 11	SW 13	SW 13	SW 13	SW 12	SW 12	E 8	E 8	E 8	E 8
kJ	1474	1346	1619	1778	1575	1404	1189	1094	1013	1013	1013	997	980	675	866	1021	1021	851	730	706	477	439	392	347
Swell 2 Height (m) Direction Period (s)	E 10	E 10	E 11	E 11	E 11	E 11	E 10	E 10	E 10	E 10	—	—	—	SSW 14	—	—	—	SSW 18	SW 18	—	SW 12	SW 12	SW 12	SW 12
kJ	133	104	108	108	108	108	78	76	75	73	—	—	—	352	—	—	—	31	12	—	624	614	603	486
Swell 3 Height (m) Direction Period (s)	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	SW 16	SW 16	—	SSW 15
kJ	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	125	124	—	275
Wind waves Height (m) Direction Period (s)	SSE 7	SSE 7	SSE 7	SE 7	SE 7	SE 7	SE 7	SE 7	ESE 7	ESE 7	ESE 7	ESE 7	ESE 7	E 7	E 7	E 7	E 7	E 8	E 8	E 8	—	—	—	—
kJ	478	550	452	323	317	351	332	321	342	315	348	371	360	396	495	524	553	652	647	569	—	—	—	—
Nearest Offshore or Glassy	Buffalo Bay Wildside Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Igoda Eastern Cape - Wild Coast	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Dumps Cape Town	Dumps Cape Town	Big Bay Cape Town	Gerickes Point Garden Route	Gerickes Point Garden Route	The Heads Garden Route	Keurbooms Garden Route	Keurbooms Garden Route	Van Stadens Mouth Eastern Cape (S)	Kitchen Windows Eastern Cape (S)	Van Stadens Mouth Eastern Cape (S)	Van Stadens Mouth Eastern Cape (S)	Van Stadens Mouth Eastern Cape (S)
Rating (10 max)	4	4	4	4	3	4	4	4	4	4	4	3	3	4	4	4	4	4	4	4	4	4	4	4
Distance (km)	180	197	197	197	284	197	197	197	197	197	197	594	594	598	197	197	172	140	140	31	2	31	31	31
Best forecast wave conditions in Eastern Cape (South)																				Van Stadens Mouth	Sea Vista	Sea Vista	Van Stadens Mouth	Sea Vista
Rating (10 max)																				4	4	4	4	4
Best forecast wave conditions in South Africa	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Igoda Eastern Cape - Wild Coast	Whispering Waves Eastern Cape - Wild Coast	Morgans Bay Eastern Cape - Wild Coast	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Cape St Martin West Coast	Wedge Durban/KZN South	Beach Road Cape Town	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Sea Vista Eastern Cape (S)	Sea Vista Eastern Cape (S)	Captains Cape Town	Gerickes Point Garden Route
Rating (10 max)	4	4	4	4	3	4	4	4	4	4	4	3	4	4	4	4	4	4	4	4	4	4	4	4
Header Global	Grindavik Antenas Iceland	Grindavik Antenas Iceland	Haapiti French Polynesia	Papatowai New Zealand	Luna Park Australia	Easter Reef Australia	Charleston New Zealand	Fox River New Zealand	Guns Namibia	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Charleston New Zealand	Playa Aguilera Spain	El Huerto Spain	Cathedral Rock Australia	Cathedral Rock Australia	Afife Portugal	May's Point Australia	Quarantine Australia	Trial Harbour Australia	Trial Harbour Australia	Bali Village Indonesia	Asu Indonesia
Rating (10 max)	5	6	5	7	5	5	5	5	5	9	9	8	5	5	5	6	6	4	5	5	9	8	5	4

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 J-Bay 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.

J-Bay 48 hour detailed Surf Forecast

How big are the waves at J-Bay today (17 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