Kosi Bay Surf Break

Lat Long: 26.87° S 32.89° E

Kosi Bay 48 hour detailed Surf Forecast

Issued: 7 pm 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kosi Bay sea temperature is
23.1° C
1.0° 

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 (21 Aug):

  • Morning surf: Morning surf (21 Aug, local time) - 2ft (0.6m), 16s period with S swell.
  • Afternoon surf: Afternoon surf (21 Aug, local time) - 2.5ft (0.8m), 16s period with SSW swell.
  • Evening surf: Evening surf (21 Aug, local time) - 3.5ft (1.0m), 13s period with S swell.

The current surf forecast for Kosi Bay at 12AM is: 1.7m 8s primary swell from a South direction and 0.5m 8s secondary swell from a East direction, 0.2m 14s secondary swell from a South-southwest direction (forecast issued at 07:00pm August 20). The wind direction is predicted to be cross-onshore.

Time (SAST) & DateWave HeightWave Period
Morning (21 Aug)2ft (0.6m)16s
Afternoon (21 Aug)2.5ft (0.8m)16s
Evening (21 Aug)3.5ft (1.0m)13s

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


Short Range Forecast

Mostly dry. Warm (max 26°C on Sat afternoon, min 18°C on Thu night). Winds increasing (calm on Fri night, strong winds from the S by Sat night).

Thu
20
Friday
21
Saturday
22
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
1
1
2
2
1
0
0
1
1
1
0
0
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)
2.3
S
7
2.2
S
8
1.8
S
8
1.5
S
7
1.2
S
7
0.5
S
16
0.7
SSW
16
0.8
SSW
16
0.8
SSW
14
1
S
13
0.9
S
13
0.6
SSE
9
0.7
S
12
0.7
S
11
0.6
S
11
0.6
S
11
0.6
S
10
0.5
S
10
0.7
S
16
Wave Graph
Metric surfscale
Energy kJ
569
607
367
230
147
137
273
333
254
356
272
64
132
114
82
79
75
49
243
Wind (km/h)
35
S
25
S
20
SSW
15
SSW
15
SW
5
WSW
5
NE
15
NE
15
ENE
15
E
10
E
5
NNE
10
N
15
N
20
NNE
25
NNE
20
NNE
20
NNE
40
S
Wind State
cross-on
cross-on
cross-on
cross
cross
cross-off
glassy
cross
cross-on
cross-on
cross-on
glassy
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-on
High Tide
7:59PM1.46m
8:18AM1.33m
9:14PM1.28m
11:22AM1.20m
Low Tide
2:15AM0.84m
2:39PM0.90m
4:16AM0.99m
6:07PM0.98m
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:30
5:30
5:30
 mm
Temp °C
21
20
20
19
18
18
21
22
21
21
21
20
20
20
23
26
24
23
20
Feels °C
17
17
19
19
18
19
22
22
21
21
23
23
22
20
22
24
22
22
14
  • 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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