Kosi Bay Surf Break

Lat Long: 26.87° S 32.89° E

Kosi Bay 48 hour detailed Surf Forecast

Issued: 7 pm 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kosi Bay sea temperature is
22.7° C
0.6° 

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 (12 Aug):

  • Afternoon surf: Afternoon surf (12 Aug, local time) - 15ft (4.5m), 10s period with SSE swell.
  • Evening surf: Evening surf (12 Aug, local time) - 11ft (3.5m), 9s period with SSE swell.

The current surf forecast for Kosi Bay at 12AM is: 4.0m 9s primary swell from a Southeast direction and 0.3m 15s secondary swell from a South-southwest direction (forecast issued at 07:00pm August 11). The wind direction is predicted to be cross-onshore.

Time (SAST) & DateWave HeightWave Period
Morning (12 Aug)--
Afternoon (12 Aug)15ft (4.5m)10s
Evening (12 Aug)11ft (3.5m)9s

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


Short Range Forecast

Heavy rain (total 27mm), heaviest during Tue night. Warm (max 20°C on Fri afternoon, min 15°C on Tue night). Winds decreasing (strong winds from the SSE on Tue night, light winds from the S by Thu night).

Tue
11
Wednesday
12
Thursday
13
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
1
0
0
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)
4
SSE
10
3.5
SSE
9
3.5
SE
9
4
SE
9
3.5
SE
10
3.5
SE
9
3.5
SE
10
3.5
SE
10
3.5
SE
10
3.5
SE
10
3
SE
10
3
SE
9
3
SE
9
2.5
SE
9
2.5
SE
9
2.3
SE
9
2.1
SE
9
1.5
SSE
9
1.9
ESE
9
Wave Graph
Metric surfscale
Energy kJ
3211
1926
2227
2503
2323
2197
2422
2473
2184
1967
1637
1389
1291
1143
1002
891
727
339
553
Wind (km/h)
40
S
40
S
40
SSE
35
SSE
35
SSE
35
SSE
30
SSE
30
SSE
30
SSE
25
SSE
25
SSE
20
S
20
S
20
S
20
S
20
SSE
20
SSE
15
SSE
15
S
Wind State
cross-on
cross-on
on
cross-on
cross-on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
High Tide
3:08PM1.99m
3:26AM2.04m
3:47PM2.17m
4:02AM2.16m
4:23PM2.29m
Low Tide
9:15PM0.23m
9:32AM0.12m
9:54PM0.10m
10:08AM-0.01m
10:30PM0.04m
mod rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
cloud
light rain
light rain
light rain
light rain
light rain
rain showers
part cloud
part cloud
rain showers
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:20
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:24
5:25
5:25
 mm
6
5
4
1
1
3
2
1
1
1
2
2
1
1
1
1
Temp °C
15
15
17
18
17
17
18
19
18
18
17
16
16
16
19
19
18
17
18
Feels °C
8
9
10
11
11
11
12
13
12
13
13
13
13
12
15
15
15
14
15
  • 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.


Nearest locationNearest