Arniston Surf Break

Lat Long: 34.69° S 20.23° E

Arniston 48 hour detailed Surf Forecast

Issued: 1 pm 09 Aug 2026 (local time)

Forecast update in  hr  min

Today's Arniston sea temperature is
15.8° C
0.1° 

Arniston surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Arniston today (09 Aug):

  • Morning surf: Morning surf (09 Aug, local time) - 6ft (1.8m), 13s period with SSW swell.
  • Afternoon surf: Afternoon surf (09 Aug, local time) - 10ft (3.0m), 8s period with S swell.
  • Evening surf: Evening surf (09 Aug, local time) - 7ft (2.1m), 8s period with S swell.

The current surf forecast for Arniston at 8PM is: 2.1m 8s primary swell from a South direction and 1.4m 12s secondary swell from a Southwest direction, 0.4m 9s secondary swell from a East-southeast direction (forecast issued at 01:00pm August 09). The wind direction is predicted to be cross-onshore.

Time (SAST) & DateWave HeightWave Period
Morning (09 Aug)6ft (1.8m)13s
Afternoon (09 Aug)10ft (3.0m)8s
Evening (09 Aug)7ft (2.1m)8s

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


Short Range Forecast

Light rain (total 2mm), mostly falling on Sun afternoon. Very mild (max 14°C on Mon night, min 11°C on Wed morning). Winds increasing (moderate winds from the SSE on Mon morning, near gales from the ENE by Tue night).

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
2
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)
2.5
S
8
3
S
8
2.5
S
8
2.1
S
8
2.1
SSE
8
2
S
8
2
SSW
11
2
SSW
10
2.3
S
10
2.3
S
10
2.3
S
10
2.3
SSE
10
2.5
S
14
2.3
S
13
1.7
SSW
13
1.6
SSW
13
1.5
SSW
12
2.3
ESE
7
2.5
ESE
7
3
ESE
7
3
E
8
Wave Graph
Metric surfscale
Energy kJ
707
1055
850
603
560
535
883
772
1019
1024
1076
1038
2733
1835
1011
860
599
527
600
821
1075
Wind (km/h)
40
S
40
S
40
S
30
S
25
S
30
S
25
S
20
SSE
25
SSE
30
SE
30
SE
30
ESE
30
ESE
30
E
30
E
30
ENE
40
ENE
40
E
45
E
50
E
50
ENE
Wind State
cross-on
cross
cross
cross-on
cross
cross
cross
cross-on
cross-on
on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
12:57PM1.48m
1:12AM1.65m
1:50PM1.68m
2:04AM1.79m
2:35PM1.86m
Low Tide
7:05PM0.49m
7:40AM0.27m
8:02PM0.32m
8:25AM0.12m
8:48PM0.17m
light rain
rain showers
part cloud
part cloud
rain showers
part cloud
cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
part cloud
cloud
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:24
7:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:02
6:04
6:04
 mm
3
1
1
Temp °C
12
13
13
13
12
12
13
12
13
13
13
13
14
13
14
14
14
14
14
13
13
Feels °C
3
4
4
5
5
6
6
6
7
6
6
7
7
6
8
8
6
6
5
4
3
  • 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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