Kosi Bay Surf Break

Lat Long: 26.87° S 32.89° E

Kosi Bay 48 hour detailed Surf Forecast

Issued: 1 pm 13 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kosi Bay sea temperature is
22.7°C
0.5° 

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 (13 Sep):

  • Morning surf: Morning surf (13 Sep, local time) - 3ft (0.9m), 9s period with E swell.
  • Afternoon surf: Afternoon surf (13 Sep, local time) - 2.5ft (0.7m), 9s period with E swell.
  • Evening surf: Evening surf (13 Sep, local time) - 4.5ft (1.4m), 5s period with ENE swell.

The current surf forecast for Kosi Bay at 6PM is: 1.2m 9s primary swell from a East-northeast direction and 0.6m 9s secondary swell from a South direction, 0.3m 11s secondary swell from a South direction (forecast issued at 01:00pm September 13). The wind direction is predicted to be cross-shore.

Time (SAST) & DateWave HeightWave Period
Morning (13 Sep)3ft (0.9m)9s
Afternoon (13 Sep)2.5ft (0.7m)9s
Evening (13 Sep)4.5ft (1.4m)5s

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


Short Range Forecast

Mostly dry. Warm (max 26°C on Wed morning, min 20°C on Sun night). Mainly fresh winds.

Sun
13
Monday
14
Tuesday
15
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)
0
0
0
0
0
1
0
0
1
1
0
0
1
1
3
2
2
1
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
E
9
0.7
E
9
1.2
ENE
9
1.5
ENE
5
1.4
ENE
6
1.3
ENE
6
0.9
E
6
1
E
6
1.4
ENE
6
1.3
ENE
6
1.7
E
8
1.8
E
8
1.7
ENE
8
2.2
ENE
8
2.3
ENE
8
2.2
E
8
2.1
E
9
2.1
E
9
2.2
E
9
2.2
E
10
2.2
E
10
Wave Graph
Metric surfscale
Energy kJ
97
73
217
104
115
111
58
73
150
128
355
422
322
542
639
675
656
716
828
893
951
Wind (km/h)
20
NNE
25
NE
25
ENE
25
ENE
20
NE
15
NNE
20
NNE
20
NNE
25
NNE
20
NNE
20
NE
25
NE
30
NNE
30
NNE
15
NNW
20
N
25
NNE
25
NNE
20
NE
20
ENE
20
NE
Wind State
cross-off
cross
cross
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross
cross
cross
High Tide
4:56PM2.31m
5:06AM2.18m
5:22PM2.21m
5:32AM2.08m
5:47PM2.06m
Low Tide
10:44AM-0.07m
11:03PM0.02m
11:12AM0.01m
11:29PM0.12m
11:38AM0.14m
clear
clear
clear
clear
clear
clear
part cloud
cloud
cloud
clear
clear
clear
clear
clear
part cloud
clear
cloud
clear
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:47
5:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:39
5:39
5:40
 mm
Temp °C
23
23
21
21
21
20
21
21
22
23
22
22
22
21
21
21
22
23
22
22
21
Feels °C
21
21
19
19
20
19
20
19
20
21
21
21
19
18
21
20
19
20
20
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.


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