Kosi Bay 48 hour detailed Surf Forecast

Lat Long: 26.87° S 32.89° E

Issued: 1 pm 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 9PM is: 1.1m 10s primary swell from a East-southeast direction and 0.2m 7s secondary swell from a South direction (forecast issued at 01:00pm July 17). An open ocean swell of 0.4m 3s 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 (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 26°C on Sat afternoon, min 18°C on Sat morning). Wind will be generally light.
	Fri 17					Saturday 18								Sunday 19
	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	1	0	2	2	2	2	2	0	1	0	1	2	2	1	1	0	0	0	1	1
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	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	SSE 16	SSE 14	S 13	SSE 13	SSE 12	SSE 12
Wave Graph
kJ	301	288	245	240	231	235	196	196	160	151	151	148	146	225	273	344	704	334	750	560	887
Wind (km/h)	N	NNE	NE	NNE	NNW	NNW	NNW	NNW	N	NNE	NE	NE	NNE	NNW	SW	SSW	SSW	S	SSE	SSE	S
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-off	cross-off	cross	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	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	—	—	—	—	—	—
	—	—	5:13	—	—	—	—	—	—	—	5:13	—	—	—	—	—	—	—	5:14	—	—
mm	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Temp °C	22	24	22	22	21	20	19	18	23	26	24	23	22	21	18	19	22	24	22	21	21
Feels °C	21	22	20	22	20	20	18	16	20	22	21	22	24	23	18	19	21	23	21	21	22
Swell 1 Height (m) Direction Period (s)	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	E 10	S 13	S 12	SSE 14	S 13	SSE 13	SSE 12	SSE 12
kJ	301	288	245	240	231	235	196	196	160	151	151	148	117	117	273	244	704	334	750	560	887
Swell 2 Height (m) Direction Period (s)	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	S 13	E 10	SSE 16	E 10	S 12	E 10	SSE 13	E 10
kJ	14	9	9	3	17	6	26	43	17	50	66	61	146	225	120	344	96	225	96	257	71
Swell 3 Height (m) Direction Period (s)	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	NE 5	NE 5	E 10	NE 6	E 10	NE 6	E 10	NE 6
kJ	7	7	10	8	4	29	2	2	18	21	41	68	35	23	19	122	25	96	21	96	11
Wind waves Height (m) Direction Period (s)	—	NNE 2	NE 3	NNE 3	NNE 3	NNE 3	NNE 4	N 4	NNE 4	NNE 4	NNE 4	NE 4	NE 4	—	—	SSW 3	SSW 4	S 5	S 4	—	SSE 4
kJ	—	1	5	4	4	3	4	8	14	22	26	21	20	—	—	8	29	34	19	—	13
Nearest Offshore or Glassy	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	Salt Rock KZN North	Sodwana KZN North	Kosi Bay KZN North	Kosi Bay KZN North	Ponta do Ouro Inhambane	Alkantstrand KZN North	Mapelane KZN North	Alkantstrand KZN North	Addington (South Beach) Durban/KZN South	Alkantstrand KZN North	Cape Vidal KZN North
Rating (10 max)	2	2	2	2	2	2	2	2	1	2	2	2	2	2	2	3	4	4	3	3	4
Distance (km)	0	228	228	0	0	0	0	0	25	380	337	25	0	0	3	228	177	228	378	228	144
Best forecast wave conditions in KwaZulu-Natal North Coast	Richards Bay (Outside)	Alkantstrand	Alkantstrand	Richards Bay (Outside)	Richards Bay (Outside)	Richards Bay (Outside)	Richards Bay (Outside)	Richards Bay (Outside)	Richards Bay (Outside)		Umhlanga	Richards Bay (Outside)	Mtunzini	Umhlanga	Umhlanga	Richards Bay (Outside)	Mapelane	Alkantstrand		Umhlanga	Cape Vidal
Rating (10 max)	2	2	2	2	2	2	2	2	2		2	2	3	3	3	3	4	4		3	4
Best forecast wave conditions in South Africa	Gerickes Point Garden Route	Yellow sands Point Eastern Cape - Wild Coast	Yellow sands Point Eastern Cape - Wild Coast	Yellow sands Point Eastern Cape - Wild Coast	Gerickes Point Garden Route	Goukamma River Mouth 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	Gonubie Reef (The Lefts) Eastern Cape - Wild Coast	Gonubie Reef (The Lefts) Eastern Cape - Wild Coast	Yellow sands Point Eastern Cape - Wild Coast	Yellow sands Point Eastern Cape - Wild Coast	Goukamma River Mouth Garden Route	Mntafufu Eastern Cape - Wild Coast	Barbel Point Eastern Cape - Wild Coast	Barbel Point Eastern Cape - Wild Coast	Vleesbaai Overberg	Cintsa East Eastern Cape - Wild Coast
Rating (10 max)	4	4	4	4	3	3	3	3	3	3	3	4	4	4	4	4	4	4	4	3	4
Header Global	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	Seconds (White Rock) New Zealand	Seconds (White Rock) New Zealand	Seconds (White Rock) New Zealand	Seconds (White Rock) New Zealand	Seconds (White Rock) 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	Dinner Plates New Zealand	Otago Peninsula - Allans Beach New Zealand
Rating (10 max)	5	6	7	6	6	9	9	9	8	7	6	6	9	6	7	7	7	7	8	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)

Latest Updates

Ben Mondy

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 Kosi 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.

Kosi Bay 48 hour detailed Surf Forecast

How big are the waves at Kosi Bay today (17 Jul):

Short Range Forecast

Latest Updates

How Our WaveFinder Tool Makes Forecasting Easier Than Ever Before

The Five Best Forecasts For International Surfing Day 2026

Best Surf Travel Deals & Discounts For 2026 To Help Make Surf Travel Cheaper

Let Our Surf Alerts Do All Your Forecast Heavy Lifting

Talking To Maddie Meddings on New Film Undercurrents. (And Then Watch It!)

FREE! Surf-Forecast.com widget for your website