Arniston Surf Break

Lat Long: 34.69° S 20.23° E

Arniston 48 hour detailed Surf Forecast

Issued: 1 am 31 Jul 2026 (local time)

Forecast update in  hr  min

Today's Arniston sea temperature is
16.1° C
0.2° 

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 (31 Jul):

  • Morning surf: Morning surf (31 Jul, local time) - 6ft (1.9m), 8s period with E swell.
  • Afternoon surf: Afternoon surf (31 Jul, local time) - 6ft (1.9m), 8s period with ESE swell.
  • Evening surf: Evening surf (31 Jul, local time) - 7ft (2.1m), 8s period with E swell.

The current surf forecast for Arniston at 10AM is: 1.8m 8s primary swell from a East direction and 0.7m 12s secondary swell from a Southwest direction (forecast issued at 01:00am July 31). The wind direction is predicted to be cross-onshore.

Time (SAST) & DateWave HeightWave Period
Morning (31 Jul)6ft (1.9m)8s
Afternoon (31 Jul)6ft (1.9m)8s
Evening (31 Jul)7ft (2.1m)8s

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


Short Range Forecast

Mostly dry. Warm (max 22°C on Sun afternoon, min 14°C on Fri morning). Wind will be generally light.

Friday
31
Saturday
1
Sunday
2
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
!
!
!
!
1
0
1
2
3
3
3
2
2
3
3
3
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)
2
E
7
1.8
E
7
1.9
E
8
1.8
E
8
1.8
ESE
8
2.1
ESE
8
2.1
E
8
2.2
ESE
9
2.5
E
9
2.5
E
9
2.1
ESE
9
2.1
ESE
9
2
ESE
9
2
ESE
9
2
ESE
9
2
ESE
9
1.9
ESE
9
1.9
ESE
9
1.8
ESE
9
1.8
ESE
9
1.8
ESE
9
1.6
ESE
9
1.6
ESE
9
1.6
ESE
9
Wave Graph
Metric surfscale
Energy kJ
377
343
430
387
406
602
632
676
912
1056
692
708
645
659
673
641
579
567
510
510
510
432
383
366
Wind (km/h)
35
ENE
25
ENE
20
ENE
25
ENE
25
E
30
E
30
E
20
ENE
15
NE
10
NE
10
NNE
15
NE
15
ENE
15
ENE
15
ENE
10
NE
5
NNW
5
N
10
N
10
NNE
5
E
10
SW
10
WSW
10
W
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross
cross-on
cross-off
cross-off
off
High Tide
4:06AM1.77m
4:30PM1.87m
4:36AM1.76m
4:59PM1.88m
5:07AM1.72m
5:29PM1.86m
Low Tide
10:16AM0.12m
10:37PM0.24m
10:43AM0.13m
11:08PM0.24m
11:11AM0.17m
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:33
7:33
7:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:57
5:57
5:58
 mm
Temp °C
14
14
14
14
15
16
16
16
15
15
15
16
18
19
18
18
18
17
17
19
22
19
17
16
Feels °C
9
10
10
9
10
10
10
11
11
12
11
12
14
15
15
16
16
15
13
16
19
16
14
14
  • 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 Arniston 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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