Kosi Bay Surf Forecast

/ KZN North (23 surf breaks) /

South Africa (276 surf breaks) / Lat Long: (26.87° S 32.89° E)

Surf Forecasts:

Kosi Bay surfForecast / KZN North / South Africa

12 Day Weather and Surf, issued 1 pm Wednesday 12 Nov 2025 SAST

Forecast update in hr min s Forecast update imminent

Kosi Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.

Today's Kosi Bay sea temperature is 24.5° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Kosi Bay this week:

The surf forecast for Kosi Bay over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Nov 19) at 2AM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.8m and 7s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Kosi Bay in the next 12 days are 2.5m 10s and forecast to arrive on Friday (Nov 14) at 5AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 5s period and expected on Saturday (Nov 15) at 8AM.

Wave Type	Time (SAST) & Date	Wave Height & Period
Next good surf (1 star+)	2AM (Wed 19th Nov)	2.5ft (0.7m) 9s
Best Surf	2AM (Wed 19th Nov)	2.5ft (0.7m) 9s
Most Powerful	5AM (Fri 14th Nov)	8ft (2.5m) 10s

Table - best surf conditions forecast for Kosi Bay over the next 12 days.

Updates in hr min s Forecast update imminent

12 Days Hourly

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	Short Range Forecast Mostly dry. Warm (max 28°C on Sat morning, min 20°C on Fri night). Winds increasing (light winds from the SSW on Wed night, fresh winds from the SSE by Thu afternoon).											Days 3-6 Weather Summary Moderate rain (total 19mm), heaviest on Sun morning. Warm (max 29°C on Sat afternoon, min 19°C on Sun afternoon). Winds decreasing (fresh winds from the SSE on Sat afternoon, light winds from the S by Mon night).
	Wed 12		Thursday 13			Friday 14			Saturday 15			Sunday 16			Monday 17			Tuesday 18
	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM	PM	Night	AM
Rating (10 max)	0	1	0	0	0	1	1	0	0	0	0	0	0	0	0	0	1	0	0	1	0
Swell Height Map See all maps
Wave Height (m) & direction (?)	S	SSE	SSE	S	S	S	SSE	SSE	SSE	SSE	S	SSE	SSE	SSE	S	SE	S	S	E	S	S
Period(s) (?)	11	15	11	6	9	11	11	10	10	10	8	9	9	9	9	8	9	9	7	9	9
Wave Graph (?)
kJ (?)	160	222	161	414	1285	1122	783	433	227	333	912	971	878	322	201	182	109	80	83	85	83
Wind (km/h)	E	S	SSE	SSE	S	SE	ENE	N	N	SSE	S	S	SSE	SSE	SE	SE	S	ESE	ENE	NW	ENE
Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy	cross- on	cross- on	cross- on	cross- on	cross- on	on	cross	cross- off	cross- off	cross- on	cross- on	cross- on	cross- on	cross- on	on	on	cross- on	cross- on	cross	glass	cross- on
High Tide / height (m)		9:18PM 1.35	10:45AM 1.47		11:26PM 1.38	12:14PM 1.58		12:39AM 1.51	1:06PM 1.71		1:25AM 1.64	1:43PM 1.83		2:00AM 1.76		2:14PM 1.93	2:30AM 1.86		2:43PM 2.00	2:59AM 1.93
Low Tide / height (m)	3:03PM 0.86	3:45AM 0.80		5:15PM 0.86		5:36AM 0.75	6:35PM 0.73		6:42AM 0.64	7:20PM 0.59		7:25AM 0.51	7:55PM 0.45		8:00AM 0.41		8:25PM 0.34	8:31AM 0.32		8:53PM 0.26	9:01AM 0.25

	Wed 12		Thursday 13			Friday 14			Saturday 15			Sunday 16			Monday 17			Tuesday 18
Sunrise	-	-	4:50	-	-	4:50	-	-	4:50	-	-	4:48	-	-	4:48	-	-	4:48	-	-	4:48
Sunset	6:13	-	-	6:14	-	-	6:15	-	-	6:15	-	-	6:15	-	-	6:16	-	-	6:17	-	-

Rain (mm)	-	-	-	-	-	-	-	-	-	-	-	6	4	4	-	3	2	-	-	1	-
Temp. °C	26	23	25	24	22	22	22	21	28	29	22	20	20	20	21	21	20	22	22	22	23
Feels °C (?)	26	25	23	20	17	19	20	18	25	26	20	17	16	17	17	19	20	21	20	21	23

Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)

Quick surf report for Kosi Bay:

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Information about the Kosi Bay Surf forecast

The above surf forecast table for Kosi Bay provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Kosi Bay can be found by selecting the local surf guide option on the grey menu. Our Kosi Bay surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Kosi Bay) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Kosi Bay may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Kosi Bay is 108 km (67 miles) from the city of Maputo. If you plan a holiday in KwaZulu-Natal North Coast, look for hotels and other accommodation in Maputo. Maputo has rooms for a wide range of budgets as well as car hire and transport links.