Kosi Bay Surf Break

Lat Long: 26.87° S 32.89° E

Kosi Bay 48 hour detailed Surf Forecast

Issued: 7 pm 10 Sep 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 (10 Sep):

  • 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 10PM is: 1.5m 9s primary swell from a East direction and 0.5m 10s secondary swell from a South-southeast direction, 0.6m 4s secondary swell from a Northeast direction (forecast issued at 07:00pm September 10). The wind direction is predicted to be cross-offshore.

Time (SAST) & DateWave HeightWave Period
Morning (10 Sep)--
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 Thu night). Wind will be generally light.

Thu
10
Friday
11
Saturday
12
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
0
2
1
2
2
1
0
0
0
1
0
0
1
0
0
0
0
1
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
1.5
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
1.3
E
9
1.2
E
9
1.1
E
9
1
E
9
1
E
8
1
E
8
0.9
E
9
0.9
E
9
0.9
E
9
0.9
E
9
0.9
E
9
Wave Graph
Metric surfscale
Energy kJ
422
364
356
364
380
388
327
318
268
224
184
150
143
143
119
122
127
130
130
Wind (km/h)
20
NE
20
NE
15
N
15
N
15
N
10
N
10
SE
20
SE
15
SE
10
SSE
10
S
10
SSW
10
SW
5
SW
10
NE
20
NE
20
NE
25
NE
15
N
Wind State
cross
cross
cross-off
cross-off
cross-off
cross-off
on
on
on
cross-on
cross-on
cross
cross
glassy
cross
cross
cross
cross
cross-off
High Tide
3:29PM2.25m
3:42AM2.19m
4:00PM2.34m
4:11AM2.24m
4:29PM2.36m
Low Tide
9:36PM0.06m
9:46AM-0.04m
10:07PM-0.01m
10:16AM-0.09m
10:35PM-0.02m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:38
5:38
5:39
 mm
Temp °C
21
20
20
20
19
20
23
22
21
21
20
20
19
21
23
23
21
20
20
Feels °C
18
19
20
20
19
20
23
21
21
23
22
22
20
23
24
22
20
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.


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