Kosi Bay 48 hour detailed Surf Forecast

Lat Long: 26.87° S 32.89° E

Issued: 7 pm 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 (19 Jul):

Morning surf: Morning surf (19 Jul, local time) - 3.5ft (1.0m), 15s period with SSE swell.
Afternoon surf: Afternoon surf (19 Jul, local time) - 3.5ft (1.0m), 12s period with S swell.
Evening surf: Evening surf (19 Jul, local time) - 6ft (1.8m), 12s period with SSE swell.

The current surf forecast for Kosi Bay at 12AM is: 0.8m 10s primary swell from a East direction and 0.5m 14s secondary swell from a South direction (forecast issued at 07:00pm July 18). An open ocean swell of 0.8m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (SAST) & Date	Wave Height	Wave Period
Morning (19 Jul)	3.5ft (1.0m)	15s
Afternoon (19 Jul)	3.5ft (1.0m)	12s
Evening (19 Jul)	6ft (1.8m)	12s

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

	Short Range Forecast Mostly dry. Warm (max 23°C on Sat night, min 18°C on Sun night). Winds decreasing (fresh winds from the S on Mon afternoon, calm by Tue morning).
	Sat 18			Sunday 19								Monday 20
	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	2	2	2	0	0	0	0	0	2	3	4	3	3	1	0	0	1	3
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	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	SSE 12
Wave Graph
kJ	151	117	117	225	273	419	684	298	820	960	969	933	933	1089	1030	1116	1032	1000	1039
Wind (km/h)	NNE	NNE	N	W	SSW	S	S	SSE	SSE	SSE	S	WSW	SW	SW	S	S	SSE	SE	SSE
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-off	cross-off	cross-off	cross-off	cross-on	cross-on	cross-on	cross-on	on	on	cross-on	cross-off	cross	cross	cross-on	cross-on	cross-on	on	cross-on
High Tide		6:34PM2.10m				6:43AM1.93m				7:10PM1.97m				7:19AM1.79m				7:48PM1.81m
Low Tide				00:41AM0.30m				12:52PM0.23m				1:18AM0.43m				1:29PM0.39m


	—	—	—	—	6:35	—	—	—	—	—	—	—	6:35	—	—	—	—	—	—
	5:13	—	—	—	—	—	—	—	5:14	—	—	—	—	—	—	—	5:14	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	25	23	22	20	19	20	23	23	22	22	21	19	18	18	22	23	22	22	21
Feels °C	22	22	23	19	18	19	22	21	21	22	23	20	19	18	21	20	20	21	21
Swell 1 Height (m) Direction Period (s)	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	SSE 12
kJ	151	117	117	225	273	419	684	273	820	960	969	933	933	1089	1030	1116	1032	1000	1039
Swell 2 Height (m) Direction Period (s)	SSW 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	43	61	102	117	120	184	96	298	96	96	71	70	66	65	43	42	27	26	26
Swell 3 Height (m) Direction Period (s)	S 15	S 15	SSW 10	NE 5	NE 5	E 10	NE 5	E 10	NE 6	NE 6	ENE 5	NE 5	S 11	S 11	S 17	S 17	NE 6	NE 6	S 10
kJ	41	68	35	29	23	122	14	96	20	15	11	7	21	21	6	5	5	5	17
Wind waves Height (m) Direction Period (s)	NNE 5	NNE 5	NNE 5	—	—	S 3	S 4	S 4	S 4	S 4	—	—	—	—	S 4	S 5	SSE 5	SSE 5	—
kJ	54	35	28	—	—	8	28	24	18	8	—	—	—	—	19	59	58	42	—
Nearest Offshore or Glassy	Tongaat KZN North	Kosi Bay KZN North	Kosi Bay KZN North	Kosi Bay KZN North	Alkantstrand KZN North	Mapelane KZN North	Mapelane KZN North	Quissico Inhambane	Reunion Durban/KZN South	Mtunzini KZN North	Sodwana KZN North	Kosi Bay KZN North	Cape Vidal KZN North	Alkantstrand KZN North	Alkantstrand KZN North	Addington (South Beach) Durban/KZN South	Mapelane KZN North	Mtunzini KZN North	Cape Vidal KZN North
Rating (10 max)	2	2	2	2	3	4	4	3	4	3	4	4	4	4	4	3	4	3	3
Distance (km)	351	0	0	0	228	177	177	290	380	258	25	0	144	228	228	378	177	258	144
Best forecast wave conditions in KwaZulu-Natal North Coast	Umhlanga	Richards Bay (Outside)	Siyayi	Umhlanga	Umhlanga	Umhlanga	Umhlanga			Umhlanga	Umhlanga	Umhlanga	Umhlanga	Alkantstrand	Alkantstrand		Alkantstrand	Umhlanga	Richards Bay (Outside)
Rating (10 max)	2	2	2	3	3	4	4			4	4	4	4	4	4		4	3	3
Best forecast wave conditions in South Africa	Gerickes Point Garden Route	Gonubie Reef (The Lefts) Eastern Cape - Wild Coast	Gonubie Reef (The Lefts) Eastern Cape - Wild Coast	Haga-Haga Eastern Cape - Wild Coast	Gerickes Point Garden Route	Amanzimtoti Durban/KZN South	Loch Ness (Noordhoek) Eastern Cape (S)	Dungeons Cape Town	Reunion Durban/KZN South	Yzerfontein West Coast	Queensberry Bay Eastern Cape - Wild Coast	Kanon Overberg	Goukamma River Mouth Garden Route	Goukamma River Mouth Garden Route	Barbel Point Eastern Cape - Wild Coast	Yellow sands Point Eastern Cape - Wild Coast	Haga-Haga Eastern Cape - Wild Coast	Haga-Haga Eastern Cape - Wild Coast	Vleesbaai Overberg
Rating (10 max)	3	4	4	4	3	4	4	3	4	4	4	4	4	4	4	3	4	4	3
Header Global	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	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	White Rock - The Spit New Zealand	Seconds (White Rock) New Zealand	Ning Nong Point and Reef New Zealand	Last Chance New Zealand	Seconds (White Rock) New Zealand	Diners Beach New Zealand
Rating (10 max)	6	5	6	6	6	7	7	7	8	7	6	5	5	8	7	5	5	5	5

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

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Kosi Bay 48 hour detailed Surf Forecast

How big are the waves at Kosi Bay today (19 Jul):

Short Range Forecast

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