Kosi Bay Surf Break

Lat Long: 26.87° S 32.89° E

Kosi Bay 48 hour detailed Surf Forecast

Issued: 1 am 13 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kosi Bay sea temperature is
22.6° 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 Aug):

  • Morning surf: Morning surf (13 Aug, local time) - 8ft (2.5m), 9s period with SE swell.
  • Afternoon surf: Afternoon surf (13 Aug, local time) - 7ft (2.2m), 9s period with SE swell.
  • Evening surf: Evening surf (13 Aug, local time) - 5ft (1.5m), 9s period with E swell.

The current surf forecast for Kosi Bay at 8AM is: 2.5m 9s primary swell from a Southeast direction and 0.3m 15s secondary swell from a South direction (forecast issued at 01:00am August 13). The wind direction is predicted to be cross-shore.

Time (SAST) & DateWave HeightWave Period
Morning (13 Aug)8ft (2.5m)9s
Afternoon (13 Aug)7ft (2.2m)9s
Evening (13 Aug)5ft (1.5m)9s

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


Short Range Forecast

Light rain (total 5mm), mostly falling on Thu morning. Warm (max 20°C on Sat afternoon, min 17°C on Thu morning). Wind will be generally light.

Thursday
13
Friday
14
Saturday
15
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
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
1
1
2
0
0
1
0
1
2
1
1
1
1
0
1
2
2
2
2
2
1
1
1
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
SE
9
2.5
SE
9
2.5
SE
9
2.4
SE
9
2.3
SE
9
2.1
SE
9
1.5
E
9
1.5
E
9
1.4
E
9
1.5
E
9
1.6
ESE
9
1.5
E
9
1.5
E
9
1.7
ESE
9
1.8
ESE
10
1.8
ESE
11
1.8
ESE
10
1.8
ESE
10
1.8
ESE
10
1.8
ESE
10
1.8
ESE
10
1.9
ESE
11
1.8
ESE
11
1.9
ESE
11
Wave Graph
Metric surfscale
Energy kJ
1357
1202
1079
951
844
688
372
372
339
364
388
363
405
442
636
716
650
625
603
641
679
798
807
894
Wind (km/h)
20
S
20
S
20
SSW
20
S
20
SSE
20
SSE
15
SSE
15
SSE
15
SSW
15
SSW
15
SSW
15
S
10
SSE
10
SSE
15
SE
10
SSE
5
SSW
15
SW
10
SW
5
S
10
ESE
15
ESE
10
E
5
ENE
Wind State
cross-on
cross-on
cross
cross-on
on
cross-on
on
cross-on
cross
cross-on
cross-on
cross-on
on
on
on
on
cross-on
cross
cross
cross-on
on
cross-on
cross-on
glassy
High Tide
4:02AM2.16m
4:23PM2.29m
4:36AM2.21m
4:57PM2.33m
5:08AM2.21m
5:28PM2.29m
Low Tide
10:08AM-0.01m
10:30PM0.04m
10:42AM-0.07m
11:03PM0.03m
11:14AM-0.06m
light rain
light rain
light rain
part cloud
part cloud
clear
clear
clear
clear
rain showers
rain showers
light rain
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:20
6:18
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:25
5:27
5:27
 mm
1
2
1
1
1
1
1
Temp °C
17
16
17
19
18
18
19
18
17
17
17
19
19
19
19
19
18
17
17
19
20
20
20
19
Feels °C
14
13
14
15
14
14
15
16
15
15
15
17
17
18
17
18
18
16
17
19
19
19
19
20
  • 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