Kosi Bay Surf Break

Lat Long: 26.87° S 32.89° E

Kosi Bay 48 hour detailed Surf Forecast

Issued: 1 am 09 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kosi Bay sea temperature is
22.9° C
0.8° 

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 (0.7m), 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 6AM is: 0.8m 10s primary swell from a East direction and 0.2m 15s secondary swell from a South-southwest direction (forecast issued at 01:00am August 09). An open ocean swell of 0.9m 4s 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 (0.7m)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 40mm), heaviest during Tue night. 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 S by Tue afternoon).

Sunday
9
Monday
10
Tuesday
11
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)
0
0
0
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
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
E
10
0.8
E
10
0.8
E
10
0.7
E
9
0.7
E
9
0.7
E
9
0.6
E
9
0.8
E
9
0.9
E
6
1.3
ENE
6
2.5
S
7
3.5
S
8
4
S
10
4.5
S
10
4.5
S
10
4.5
S
10
4.5
S
10
4.5
S
10
4
S
10
4
S
9
4.5
S
10
4
S
9
3.5
SSE
9
3.5
SE
9
Wave Graph
Metric surfscale
Energy kJ
89
116
113
85
81
80
57
99
64
140
639
1676
3083
4380
4333
4240
3674
3414
3070
2934
3704
2997
2041
2227
Wind (km/h)
20
N
20
N
25
N
30
N
30
NNE
25
NNE
30
NNE
20
NNE
25
S
35
S
45
SSW
45
SSW
45
SSW
45
S
45
S
40
S
45
S
45
SSE
45
SSE
40
S
50
S
40
S
35
S
40
SSE
Wind State
cross-off
cross-off
cross-off
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
cross-on
cross-on
cross-on
cross-on
cross-on
on
High Tide
00:33AM1.52m
1:19PM1.53m
1:53AM1.69m
2:22PM1.76m
2:45AM1.88m
3:08PM1.99m
Low Tide
6:58AM0.72m
7:30PM0.61m
8:06AM0.51m
8:30PM0.41m
8:53AM0.30m
9:15PM0.23m
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
cloud
cloud
cloud
cloud
light rain
light rain
cloud
light rain
light rain
light rain
light rain
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
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
1
3
5
4
2
10
Temp °C
20
18
18
23
25
24
22
22
20
20
18
18
19
18
18
18
18
18
18
17
17
16
17
16
Feels °C
18
15
13
17
20
20
19
22
18
16
10
10
11
11
10
11
11
10
10
10
9
10
10
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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