Kosi Bay Surf Break

Lat Long: 26.87° S 32.89° E

Kosi Bay 48 hour detailed Surf Forecast

Issued: 1 pm 09 Aug 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 (09 Aug):

  • Morning surf: Morning surf (09 Aug, local time) - 2.5ft (0.8m), 10s period with E swell.
  • Afternoon surf: Afternoon surf (09 Aug, local time) - 2.5ft (0.7m), 9s period with E swell.
  • Evening surf: Evening surf (09 Aug, local time) - 2.5ft (0.7m), 9s period with E swell.

The current surf forecast for Kosi Bay at 6PM is: 0.7m 9s primary swell from a East direction and 0.2m 7s secondary swell from a South direction (forecast issued at 01:00pm August 09). An open ocean swell of 1.5m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (SAST) & DateWave HeightWave Period
Morning (09 Aug)2.5ft (0.8m)10s
Afternoon (09 Aug)2.5ft (0.7m)9s
Evening (09 Aug)2.5ft (0.7m)9s

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


Short Range Forecast

Heavy rain (total 43mm), heaviest during Tue afternoon. Warm (max 25°C on Sun afternoon, min 16°C on Tue afternoon). Winds increasing (light winds from the NNE on Sun night, strong winds from the SSW by Mon afternoon).

Sun
9
Monday
10
Tuesday
11
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
0
0
0
0
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)
0.7
E
9
0.7
E
9
0.7
E
9
0.6
E
9
0.8
E
9
0.8
E
6
1.7
S
6
2.3
S
7
3
S
7
3.5
S
8
4
S
9
4.5
S
10
4.5
S
10
4
S
10
3.5
S
9
3.5
SSE
9
4
SSE
9
4
SSE
9
4
SSE
9
3.5
SSE
9
3.5
SSE
9
Wave Graph
Metric surfscale
Energy kJ
85
81
80
57
99
52
172
483
859
1828
3072
3648
3899
3030
2185
2174
2541
2821
2463
2162
1721
Wind (km/h)
30
N
30
NNE
25
NNE
30
NNE
20
NNE
20
S
35
S
35
SSW
40
SSW
45
SSW
45
S
45
S
45
S
40
S
45
SSE
45
SSE
40
SSE
45
SSE
40
SSE
40
SSE
35
SSE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
on
cross-on
cross-on
High Tide
1:19PM1.53m
1:53AM1.69m
2:22PM1.76m
2:45AM1.88m
3:08PM1.99m
Low Tide
7:30PM0.61m
8:06AM0.51m
8:30PM0.41m
8:53AM0.30m
9:15PM0.23m
clear
clear
clear
clear
clear
clear
cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
light rain
light rain
light rain
light rain
mod rain
light rain
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:23
5:24
5:24
 mm
1
2
1
4
8
4
5
2
Temp °C
22
25
24
22
22
21
20
19
19
19
18
19
18
18
19
19
18
16
16
16
17
Feels °C
16
19
20
18
21
20
15
14
12
11
10
11
10
11
12
11
11
8
9
9
10
  • 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 

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