Kosi Bay 48 hour detailed Surf Forecast

Lat Long: 26.87° S 32.89° E

Issued: 1 pm 10 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 (10 Jul):

Morning surf: Morning surf (10 Jul, local time) - 3.5ft (1.0m), 13s period with S swell.
Afternoon surf: Afternoon surf (10 Jul, local time) - 4.5ft (1.3m), 17s period with S swell.
Evening surf: Evening surf (10 Jul, local time) - 5.5ft (1.7m), 15s period with S swell.

The current surf forecast for Kosi Bay at 5PM is: 1.5m 16s primary swell from a South direction and 0.5m 8s secondary swell from a East direction (forecast issued at 01:00pm July 10). An open ocean swell of 0.6m 3s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (SAST) & Date	Wave Height	Wave Period
Morning (10 Jul)	3.5ft (1.0m)	13s
Afternoon (10 Jul)	4.5ft (1.3m)	17s
Evening (10 Jul)	5.5ft (1.7m)	15s

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

	Short Range Forecast Light rain (total 2mm), mostly falling on Sat night. Warm (max 23°C on Fri afternoon, min 17°C on Sun morning). Wind will be generally light.
	Fri 10					Saturday 11								Sunday 12								Mon 13
	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	2 AM	5 AM	8 AM
Rating (10 max)	2	2	2	3	4	4	2	2	3	1	1	2	2	2	2	1	1	0	0	0	1	1	1	1
Swell Height Map See all maps
Wave Height (m) Direction Period (s)	S 13	S 17	S 16	S 16	S 15	S 15	S 14	S 14	S 13	S 13	S 13	S 12	S 12	S 14	S 13	S 13	S 13	S 12	S 12	S 12	S 12	S 11	S 11	S 11
Wave Graph
kJ	361	717	1178	1398	1310	1087	905	747	609	581	480	444	430	565	599	330	314	501	409	403	322	206	199	91
Wind (km/h)	N	NNE	NE	NE	NNE	WSW	SW	SW	S	ESE	E	E	SW	SW	SW	SW	S	SE	SSE	S	SW	SW	SW	SW
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy	cross-off	cross-off	cross	cross	glassy	cross-off	cross	cross	glassy	cross-on	cross-on	cross-on	glassy	cross	cross	cross	cross-on	on	on	cross-on	cross	cross	cross	cross
High Tide		11:45AM1.49m				00:33AM1.68m				1:10PM1.60m				1:45AM1.79m					2:15PM1.76m				2:42AM1.92m
Low Tide				5:58PM0.63m				6:57AM0.60m				7:19PM0.52m					8:02AM0.46m				8:23PM0.37m


	—	—	—	—	—	—	6:37	—	—	—	—	—	—	—	6:37	—	—	—	—	—	—	—	6:37	—
	—	—	5:09	—	—	—	—	—	—	—	5:09	—	—	—	—	—	—	—	5:09	—	—	—	—	5:10
mm	—	—	—	—	—	—	—	—	—	—	—	—	1	1	—	—	—	—	—	—	—	—	—	—
Temp °C	21	23	22	22	21	19	18	18	21	21	21	21	20	18	18	17	20	21	21	20	19	18	17	17
Feels °C	20	20	18	20	21	18	17	18	22	20	21	21	21	17	18	16	20	19	19	19	18	17	16	16
Swell 1 Height (m) Direction Period (s)	S 13	S 17	S 16	S 16	S 15	S 15	S 14	S 14	S 13	S 13	S 13	S 12	S 12	S 14	S 13	S 13	S 13	S 12	S 12	S 12	S 12	S 11	S 11	SSE 7
kJ	361	717	1178	1398	1310	1087	905	747	609	581	480	444	430	565	599	330	314	501	409	403	322	206	199	78
Swell 2 Height (m) Direction Period (s)	E 7	E 8	E 8	SE 13	ENE 8	E 8	E 8	E 8	E 8	E 8	E 8	E 8	E 8	E 8	E 8	S 8	S 7	E 8	E 8	E 8	E 8	SSE 6	SE 6	S 11
kJ	39	28	28	7	45	44	48	32	32	31	31	21	22	22	22	93	81	22	22	22	22	34	42	91
Swell 3 Height (m) Direction Period (s)	ESE 9	SSE 14	SE 13	SE 9	SE 13	SE 13	SE 13	NNE 4	NE 4	NE 4	SSW 18	SSW 17	NNE 4	NE 4	NE 7	E 8	E 8	—	—	E 8	S 16	E 8	E 8	S 8
kJ	8	18	7	3	7	7	7	3	4	4	102	99	1	1	2	22	22	—	—	22	21	22	22	34
Wind waves Height (m) Direction Period (s)	—	NE 3	NNE 3	ENE 8	—	—	—	—	—	—	—	—	—	—	SW 3	—	—	—	—	—	—	—	SW 3	SW 3
kJ	—	2	8	66	—	—	—	—	—	—	—	—	—	—	2	—	—	—	—	—	—	—	1	3
Nearest Offshore or Glassy	Kosi Bay KZN North	Whispering Waves Eastern Cape - Wild Coast	Ntylonyane (Breezy Point) Eastern Cape - Wild Coast	Cape Vidal KZN North	Kosi Bay KZN North	Kosi Bay KZN North	Mapelane KZN North	St Lucia KZN North	Kosi Bay KZN North	Alkantstrand KZN North	Alkantstrand KZN North	Alkantstrand KZN North	Kosi Bay KZN North	Cape Vidal KZN North	Sodwana KZN North	Mapelane KZN North	Alkantstrand KZN North	Alkantstrand KZN North	Reunion Durban/KZN South	Mtunzini KZN North	St Lucia KZN North	Cape Vidal KZN North	Cape Vidal KZN North	Cape Vidal KZN North
Rating (10 max)	2	4	4	4	4	4	4	4	3	4	3	4	2	4	3	3	3	3	2	2	3	3	3	2
Distance (km)	0	779	705	144	0	0	177	173	0	228	228	228	0	144	25	177	228	228	380	258	173	144	144	144
Best forecast wave conditions in KwaZulu-Natal North Coast	Richards Bay (Outside)			Mapelane	Mtunzini	Mtunzini	Mtunzini	Richards Bay (Outside)	Alkantstrand	Alkantstrand	Alkantstrand	Alkantstrand	Umhlanga	Siyayi	Cape Vidal	Umhlanga	Alkantstrand	Alkantstrand		Umhlanga	Siyayi	Cape Vidal	Cape Vidal	Richards Bay (Outside)
Rating (10 max)	4			4	4	4	4	4	4	4	3	4	4	4	4	3	3	3		3	3	3	3	2
Best forecast wave conditions in South Africa	Gerickes Point Garden Route	Koeel Bay Overberg	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	The Hoek 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	The Hoek Cape Town	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Gerickes Point Garden Route	Goukamma River Mouth Garden Route	Goukamma River Mouth Garden Route	Goukamma River Mouth Garden Route
Rating (10 max)	5	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	3	3	3	3	3	3	3
Header Global	Papatowai New Zealand	Boneyards South Africa	Boneyards South Africa	Kaifu Rivermouth Japan	Kaifu Rivermouth Japan	Papatowai New Zealand	Papatowai New Zealand	Papatowai New Zealand	Otago Peninsula - Allans Beach New Zealand	Otago Peninsula - Allans Beach New Zealand	Kaifu Rivermouth Japan	Kaifu Rivermouth Japan	Kaifu Rivermouth Japan	Etang-Sale Reunion	Etang-Sale Reunion	Etang-Sale Reunion	Ilot Sancho Mauritius	Ilot Sancho Mauritius	Ilot Sancho Mauritius	Ilot Sancho Mauritius	Black Rocks Mauritius	Black Rocks Mauritius	Black Rocks Mauritius	Benkunqut Indonesia
Rating (10 max)	6	5	5	7	7	5	5	5	4	4	7	6	5	5	5	5	5	5	5	5	4	4	4	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

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 (10 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