Kosi Bay 48 hour detailed Surf Forecast

Lat Long: 26.87° S 32.89° E

Issued: 1 am 18 Jul 2026 (local time)

Forecast update in hr min

Today's Kosi Bay sea temperature is

23.7° C

Kosi 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 Kosi Bay today (18 Jul):

Morning surf: Morning surf (18 Jul, local time) - 3.5ft (1.0m), 10s period with E swell.
Afternoon surf: Afternoon surf (18 Jul, local time) - 3ft (0.9m), 10s period with E swell.
Evening surf: Evening surf (18 Jul, local time) - 2.5ft (0.8m), 10s period with E swell.

The current surf forecast for Kosi Bay at 4AM is: 1.0m 10s primary swell from a East direction and 0.2m 16s secondary swell from a South direction (forecast issued at 01:00am July 18). An open ocean swell of 0.5m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (SAST) & Date	Wave Height	Wave Period
Morning (18 Jul)	3.5ft (1.0m)	10s
Afternoon (18 Jul)	3ft (0.9m)	10s
Evening (18 Jul)	2.5ft (0.8m)	10s

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

	Short Range Forecast Mostly dry. Warm (max 26°C on Sat afternoon, min 18°C on Sat morning). Wind will be generally light.
	Saturday 18								Sunday 19								Monday 20
	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)	1	1	1	0	1	0	2	2	2	0	0	0	0	1	1	2	2	3	2	0	0	0	1	3
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	E 10	E 10	E 10	ESE 10	E 10	E 10	E 10	S 14	S 13	S 13	SSE 15	S 14	S 12	SSE 12	SSE 12	SSE 12	SSE 12	SSE 12	SSE 12	SSE 12	SSE 12	SSE 12	SSE 12	SE 12
Wave Graph
kJ	235	196	196	160	151	151	117	146	225	273	419	684	298	920	861	872	918	933	1003	1030	934	1237	1135	933
Wind (km/h)	N	NNW	NNW	N	NNE	NE	NE	NNE	WNW	SSW	S	S	S	SSE	SSE	S	SSW	SSW	SSW	S	SSE	SSE	SE	SE
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	glassy	glassy	cross-on	cross-on	cross-on	cross-on	on	on	cross-on	cross	cross	cross	cross-on	cross-on	on	on	on
High Tide			6:07AM2.04m				6:34PM2.10m				6:43AM1.93m				7:10PM1.97m				7:19AM1.79m				7:48PM1.81m
Low Tide	00:03AM0.19m				12:16PM0.11m				00:41AM0.30m				12:52PM0.23m				1:18AM0.43m				1:29PM0.39m


	—	6:35	—	—	—	—	—	—	—	6:35	—	—	—	—	—	—	—	6:35	—	—	—	—	—	—
	—	—	—	—	—	5:13	—	—	—	—	—	—	—	5:14	—	—	—	—	—	—	—	5:14	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	20	19	18	24	26	24	23	22	21	20	20	23	23	22	21	21	19	19	19	22	22	22	22	21
Feels °C	19	17	14	20	22	21	23	24	24	21	19	22	22	21	21	22	19	19	18	19	19	19	21	21
Swell 1 Height (m) Direction Period (s)	E 10	E 10	E 10	ESE 10	E 10	E 10	E 10	E 10	S 13	S 13	SSE 15	S 14	S 12	SSE 12	SSE 12	SSE 12	SSE 12	SSE 12	SSE 12	SSE 12	SSE 12	SSE 12	SSE 12	SE 12
kJ	235	196	196	160	151	151	117	117	225	273	419	684	273	920	861	872	918	933	1003	1030	934	1237	1135	933
Swell 2 Height (m) Direction Period (s)	S 9	S 16	SSW 15	SSW 13	SSW 12	S 11	S 11	S 14	E 10	E 10	S 12	E 10	SSE 13	E 10	E 10	E 10	E 10	E 10	E 10	E 9	E 9	E 9	E 9	E 9
kJ	6	21	21	17	50	66	61	146	117	120	184	125	298	96	96	71	70	68	45	43	42	27	42	42
Swell 3 Height (m) Direction Period (s)	SSW 12	S 9	S 18	S 15	S 16	S 15	S 15	SSW 10	NE 5	NE 5	E 10	NE 6	E 10	NE 6	NE 6	ENE 6	NE 5	S 11	SSW 11	S 17	S 17	ENE 6	ENE 6	S 10
kJ	29	2	6	18	21	41	68	35	17	18	122	19	96	20	15	12	7	21	40	6	5	3	3	17
Wind waves Height (m) Direction Period (s)	NNE 3	N 4	N 4	NNE 4	NNE 5	NNE 5	NNE 4	NNE 4	—	—	S 3	S 4	S 4	S 4	S 4	—	—	—	ENE 5	SSE 3	SSE 4	SSE 5	SE 5	E 9
kJ	3	9	16	20	25	24	18	12	—	—	5	20	22	12	7	—	—	—	5	9	39	64	43	58
Nearest Offshore or Glassy	Kosi Bay KZN North	Kosi Bay KZN North	Kosi Bay KZN North	Kosi Bay KZN North	Sodwana KZN North	Sodwana KZN North	Quissico Inhambane	Blythedale KZN North	Sodwana KZN North	Kosi Bay KZN North	Kosi Bay KZN North	Mapelane KZN North	Mapelane KZN North	Mapelane KZN North	Quissico Inhambane	Reunion Durban/KZN South	Alkantstrand KZN North	Cape Vidal KZN North	Cape Vidal KZN North	Cape Vidal KZN North	Alkantstrand KZN North	Blythedale KZN North	Alkantstrand KZN North	Alkantstrand KZN North
Rating (10 max)	2	2	2	2	2	1	1	2	2	2	2	3	4	4	3	4	4	4	4	4	4	3	4	4
Distance (km)	0	0	0	0	25	25	290	319	25	0	0	177	177	177	290	380	228	144	144	144	228	319	228	228
Best forecast wave conditions in KwaZulu-Natal North Coast	Richards Bay (Outside)	Richards Bay (Outside)	Richards Bay (Outside)	Richards Bay (Outside)	Richards Bay (Outside)	Umhlanga		Tongaat	Richards Bay (Outside)	Umhlanga	Umhlanga	Umhlanga	Mapelane	Mapelane			Umhlanga	Umhlanga	Umhlanga	Umhlanga	Umhlanga	Umdloti	Alkantstrand	Alkantstrand
Rating (10 max)	2	2	2	2	2	2		2	2	3	3	3	4	4			4	4	4	4	4	4	4	4
Best forecast wave conditions in South Africa	Yellow sands Point Eastern Cape - Wild Coast	Haga-Haga Eastern Cape - Wild Coast	Goukamma River Mouth Garden Route	Goukamma River Mouth Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Yellow sands Point Eastern Cape - Wild Coast	Gerickes Point Garden Route	Gonubie Reef (The Lefts) Eastern Cape - Wild Coast	Haga-Haga Eastern Cape - Wild Coast	Gerickes Point Garden Route	Gerickes Point Garden Route	Amanzimtoti Durban/KZN South	Dolphin Point Overberg	Barbel Point Eastern Cape - Wild Coast	Brak River Garden Route	Haga-Haga Eastern Cape - Wild Coast	The Hoek Cape Town	Fish Boma Garden Route	Riet River Eastern Cape (S)	Haga-Haga Eastern Cape - Wild Coast	Gerickes Point Garden Route	Gerickes Point Garden Route	Reunion Durban/KZN South
Rating (10 max)	4	4	3	3	3	3	3	3	4	4	3	3	4	4	3	4	4	4	4	5	5	4	4	4
Header Global	Dunedin - Bobs Beach New Zealand	Dunedin - Bobs Beach New Zealand	Seconds (White Rock) New Zealand	Papatowai New Zealand	Seconds (White Rock) New Zealand	Seconds (White Rock) New Zealand	Seconds (White Rock) New Zealand	Seconds (White Rock) New Zealand	Kaka Point New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Otago Peninsula - Allans Beach New Zealand	Humenga Point New Zealand	Otago Peninsula - Allans Beach New Zealand	Ning Nong Point and Reef New Zealand	Seconds (White Rock) New Zealand	Seconds (White Rock) New Zealand	Last Chance New Zealand
Rating (10 max)	6	6	9	9	9	8	7	6	6	6	6	6	7	7	7	8	7	7	6	5	7	7	6	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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Kosi Bay 48 hour detailed Surf Forecast

How big are the waves at Kosi Bay today (18 Jul):

Short Range Forecast

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