Kosi Bay 48 hour detailed Surf Forecast

Lat Long: 26.87° S 32.89° E

Issued: 7 am 17 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 (17 Jul):

Morning surf: Morning surf (17 Jul, local time) - 4.5ft (1.3m), 10s period with ESE swell.
Afternoon surf: Afternoon surf (17 Jul, local time) - 4ft (1.2m), 10s period with ESE swell.
Evening surf: Evening surf (17 Jul, local time) - 3.5ft (1.1m), 10s period with ESE swell.

The current surf forecast for Kosi Bay at 2PM is: 1.2m 10s primary swell from a East-southeast direction and 0.3m 7s secondary swell from a South direction (forecast issued at 07:00am July 17). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (SAST) & Date	Wave Height	Wave Period
Morning (17 Jul)	4.5ft (1.3m)	10s
Afternoon (17 Jul)	4ft (1.2m)	10s
Evening (17 Jul)	3.5ft (1.1m)	10s

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

	Short Range Forecast Mostly dry. Warm (max 25°C on Sat afternoon, min 17°C on Fri morning). Wind will be generally light.
	Friday 17							Saturday 18								Sunday 19
	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)	2	2	2	1	0	2	2	2	2	2	0	1	1	0	2	2	3	3	1	0	0	2	2
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	E 10	E 10	E 10	E 10	ESE 10	E 10	E 10	E 10	S 14	S 13	S 13	S 14	S 12	SSE 15	S 13	SSE 12	SSE 12
Wave Graph
kJ	358	301	301	288	245	240	231	235	196	196	160	151	151	148	146	225	423	618	705	417	740	1100	985
Wind (km/h)	NW	NW	N	NNE	NE	NNE	NNW	NNW	NNW	NNW	N	NNE	NNE	NE	NNE	NNW	WNW	SW	SSW	S	SSE	SSE	SSW
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	off	off	cross-off	cross-off	cross	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross-off	cross	cross-off	cross-off	off	cross	cross	cross-on	cross-on	cross-on	cross-on
High Tide						5:56PM2.18m				6:07AM2.04m				6:34PM2.10m				6:43AM1.93m				7:10PM1.97m
Low Tide				11:39AM0.04m				00:03AM0.19m				12:16PM0.11m				00:41AM0.30m				12:52PM0.23m


	6:35	—	—	—	—	—	—	—	6:35	—	—	—	—	—	—	—	6:35	—	—	—	—	—	—
	—	—	—	—	5:13	—	—	—	—	—	—	—	5:13	—	—	—	—	—	—	—	5:14	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	18	17	22	23	22	22	21	20	19	18	23	25	24	23	22	21	18	17	22	24	22	21	20
Feels °C	18	17	21	20	20	21	20	20	18	16	20	21	21	23	23	21	17	16	21	22	21	21	20
Swell 1 Height (m) Direction Period (s)	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	ESE 10	E 10	E 10	E 10	E 10	ESE 10	E 10	E 10	E 10	E 10	S 13	S 13	S 14	S 12	S 12	S 13	SSE 12	SSE 12
kJ	358	301	301	288	245	240	231	235	196	196	160	151	151	148	117	225	423	618	705	330	740	1100	985
Swell 2 Height (m) Direction Period (s)	SSE 9	SSW 9	SSW 8	S 7	S 7	S 7	S 10	S 9	SSW 16	SSW 15	SSW 13	SSW 12	S 11	S 11	S 14	E 10	E 10	E 10	E 10	SSE 15	SSE 15	E 10	E 10
kJ	7	15	14	9	9	3	17	6	26	43	17	50	66	61	146	117	120	122	96	417	246	96	71
Swell 3 Height (m) Direction Period (s)	SSW 10	SSE 8	SSE 8	SSE 8	SSE 10	S 10	SSW 7	SSW 12	S 9	S 9	S 15	S 16	S 15	S 15	SSW 10	S 10	NE 5	NE 5	NE 6	SSE 13	E 10	NE 6	NE 5
kJ	10	7	7	7	10	8	4	29	2	2	18	21	41	68	35	70	23	24	24	218	96	11	10
Wind waves Height (m) Direction Period (s)	—	—	—	NNE 3	NE 3	NNE 3	NNE 3	NNE 3	N 4	N 4	NNE 4	NNE 4	NNE 4	NNE 4	NE 4	NE 4	—	S 12	SSW 4	S 4	S 4	S 4	—
kJ	—	—	—	1	5	4	4	3	7	12	15	15	22	17	18	21	—	276	10	16	17	11	—
Nearest Offshore or Glassy	Kosi Bay KZN North	Kosi Bay KZN North	Kosi Bay KZN North	Alkantstrand KZN North	Alkantstrand KZN North	Kosi Bay KZN North	Kosi Bay KZN North	Kosi Bay KZN North	Kosi Bay KZN North	Kosi Bay KZN North	Sodwana KZN North	Reunion Durban/KZN South	Reunion Durban/KZN South	Sodwana KZN North	Kosi Bay KZN North	Kosi Bay KZN North	Kosi Bay KZN North	Mapelane KZN North	Alkantstrand KZN North	Mapelane KZN North	Alkantstrand KZN North	Mapelane KZN North	Mapelane KZN North
Rating (10 max)	2	2	2	2	2	2	2	2	2	2	1	2	2	2	2	2	3	3	4	4	4	4	4
Distance (km)	0	0	0	228	228	0	0	0	0	0	25	380	380	25	0	0	0	177	228	177	228	177	177
Best forecast wave conditions in KwaZulu-Natal North Coast	Richards Bay (Outside)	Richards Bay (Outside)	Richards Bay (Outside)	Alkantstrand	Alkantstrand	Richards Bay (Outside)	Richards Bay (Outside)	Richards Bay (Outside)	Richards Bay (Outside)	Richards Bay (Outside)	Richards Bay (Outside)			Richards Bay (Outside)	Umhlanga	Umhlanga	Umhlanga	Umhlanga	Umhlanga	Alkantstrand	Alkantstrand	Alkantstrand	Mapelane
Rating (10 max)	2	2	2	2	2	2	2	2	2	2	2			2	3	3	3	4	4	4	4	4	4
Best forecast wave conditions in South Africa	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Cintsa East Eastern Cape - Wild Coast	Yellow sands Point Eastern Cape - Wild Coast	Haga-Haga Eastern Cape - Wild Coast	Haga-Haga Eastern Cape - Wild Coast	Gerickes Point Garden Route	Goukamma River Mouth Garden Route	Gerickes Point Garden Route	Yellow sands Point Eastern Cape - Wild Coast	Yellow sands Point Eastern Cape - Wild Coast	Gerickes Point Garden Route	Goukamma River Mouth Garden Route	Dungeons Cape Town	Gerickes Point Garden Route	Goukamma River Mouth Garden Route	Vleesbaai Overberg	Warner Beach Durban/KZN South	Yellow sands Point Eastern Cape - Wild Coast	Ntylonyane (Breezy Point) Eastern Cape - Wild Coast	Outer Pool Garden Route	Super Tubes Eastern Cape (S)
Rating (10 max)	4	4	4	5	4	4	4	3	3	3	3	3	3	4	3	3	4	4	4	4	4	4	4
Header Global	Easter Reef Australia	Albatross South Africa	Easter Reef Australia	Dunedin - Kuri Bush New Zealand	Dunedin - Kuri Bush New Zealand	Dunedin - Bobs Beach New Zealand	Dunedin - Bobs Beach New Zealand	Seconds (White Rock) New Zealand	Papatowai New Zealand	Seconds (White Rock) New Zealand	Papatowai New Zealand	Papatowai New Zealand	Dunedin - Bobs Beach New Zealand	Charleston New Zealand	Dunedin - Bobs Beach 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
Rating (10 max)	6	4	5	6	7	6	6	9	9	8	9	8	5	5	7	6	6	6	7	7	7	8	7

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 (17 Jul):

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