Kosi Bay Surf Break

Lat Long: 26.87° S 32.89° E

Kosi Bay 48 hour detailed Surf Forecast

Issued: 7 pm 09 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kosi Bay sea temperature is
22.6°C
0.4° 

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


How big are the waves at Kosi Bay today (10 Sep):

  • Morning surf: Morning surf (10 Sep, local time) - 5.5ft (1.7m), 9s period with E swell.
  • Afternoon surf: Afternoon surf (10 Sep, local time) - 5ft (1.6m), 9s period with E swell.
  • Evening surf: Evening surf (10 Sep, local time) - 5ft (1.5m), 9s period with E swell.

The current surf forecast for Kosi Bay at 1AM is: 1.8m 9s primary swell from a East direction and 0.9m 11s secondary swell from a South-southeast direction (forecast issued at 07:00pm September 09). The wind direction is predicted to be cross-offshore and the swell rating is 3.

Time (SAST) & DateWave HeightWave Period
Morning (10 Sep)5.5ft (1.7m)9s
Afternoon (10 Sep)5ft (1.6m)9s
Evening (10 Sep)5ft (1.5m)9s

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


Short Range Forecast

Mostly dry. Warm (max 23°C on Fri morning, min 19°C on Wed night). Wind will be generally light.

Wed
9
Thursday
10
Friday
11
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
1
3
3
3
2
2
2
1
0
2
1
2
2
1
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
E
9
1.7
E
9
1.8
E
9
1.8
E
10
1.7
E
10
1.7
E
9
1.7
E
9
1.6
E
9
1.6
E
9
1.5
E
9
1.5
E
9
1.5
E
9
1.5
E
9
1.4
E
9
1.4
E
9
1.4
E
9
1.2
E
9
1.1
E
9
1.1
E
9
Wave Graph
Metric surfscale
Energy kJ
441
486
556
580
529
508
497
430
422
364
363
372
372
334
327
318
229
188
188
Wind (km/h)
15
NE
15
NE
15
NNE
15
N
15
N
15
N
20
NNE
25
NNE
20
NE
15
NE
15
N
15
N
15
N
10
N
5
ESE
20
SSE
20
SSE
15
S
15
S
Wind State
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-on
on
cross-on
cross-on
cross-on
High Tide
2:56PM2.08m
3:10AM2.07m
3:29PM2.25m
3:42AM2.19m
4:00PM2.34m
Low Tide
9:04PM0.19m
9:15AM0.07m
9:36PM0.06m
9:46AM-0.04m
10:07PM-0.01m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:37
5:38
5:38
 mm
Temp °C
21
20
20
20
19
19
21
22
20
20
20
19
19
20
23
22
22
22
20
Feels °C
19
19
19
19
19
18
18
19
17
18
20
19
19
20
24
21
22
22
21
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

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.


Nearest locationNearest