Kosi Bay Surf Break

Lat Long: 26.87° S 32.89° E

Kosi Bay 48 hour detailed Surf Forecast

Issued: 1 pm 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kosi Bay sea temperature is
22.8°C
0.7° 

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 (04 Sep):

  • Morning surf: Morning surf (04 Sep, local time) - 3.5ft (1.1m), 7s period with NE swell.
  • Afternoon surf: Afternoon surf (04 Sep, local time) - 10ft (3.0m), 8s period with S swell.
  • Evening surf: Evening surf (04 Sep, local time) - 11ft (3.5m), 9s period with S swell.

The current surf forecast for Kosi Bay at 4PM is: 3.0m 8s primary swell from a South direction and 0.5m 10s secondary swell from a East direction, 0.4m 6s secondary swell from a Northeast direction (forecast issued at 01:00pm September 04). The wind direction is predicted to be cross-onshore.

Time (SAST) & DateWave HeightWave Period
Morning (04 Sep)3.5ft (1.1m)7s
Afternoon (04 Sep)10ft (3.0m)8s
Evening (04 Sep)11ft (3.5m)9s

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


Short Range Forecast

Light rain (total 3mm), mostly falling on Fri night. Warm (max 22°C on Fri afternoon, min 18°C on Sat night). Winds decreasing (strong winds from the S on Fri afternoon, light winds from the S by Sun morning).

Fri
4
Saturday
5
Sunday
6
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
0
0
0
0
0
0
0
1
1
2
1
0
0
0
0
0
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)
1.6
S
6
3
S
8
3.5
S
9
3.5
S
9
3.5
S
9
3
S
9
3
SSE
9
3
SSE
10
3
SSE
10
2.5
SSE
10
2.5
SSE
10
2.1
SSE
10
1.7
SSE
9
1.9
SSE
9
1.7
SSE
9
1.7
SSE
9
1.5
SSE
9
1.6
SSE
9
1.5
SSE
8
1.3
SSE
8
1.6
SE
8
Wave Graph
Metric surfscale
Energy kJ
158
979
1797
2119
2015
1703
1676
1596
1501
1313
1139
828
469
619
495
435
352
355
294
232
333
Wind (km/h)
35
S
40
S
40
S
40
S
40
S
40
S
30
S
30
S
30
SSE
30
SSE
25
SSE
20
SSE
20
SSE
15
S
15
SSW
10
S
20
SE
20
SE
25
SE
20
SSE
20
SSE
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
on
on
cross-on
cross
cross-on
on
on
on
cross-on
cross-on
High Tide
8:02PM1.54m
8:37AM1.39m
10:08PM1.35m
11:52AM1.35m
Low Tide
1:42PM0.61m
2:24AM0.78m
3:12PM0.84m
5:00AM0.90m
6:19PM0.83m
clear
part cloud
cloud
cloud
light rain
part cloud
cloud
cloud
rain showers
part cloud
cloud
cloud
cloud
part cloud
cloud
cloud
cloud
light rain
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:36
5:37
5:37
 mm
1
1
1
Temp °C
23
22
21
20
19
20
19
19
20
20
19
19
19
19
18
18
20
20
20
19
19
Feels °C
19
16
16
15
13
14
14
15
16
16
16
17
17
18
17
18
18
18
17
16
16
  • 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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