Arniston Surf Break

Lat Long: 34.69° S 20.23° E

Arniston 48 hour detailed Surf Forecast

Issued: 7 am 12 Jul 2026 (local time)

Forecast update in  hr  min

Today's Arniston sea temperature is
16.3° C
0.3° 

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 (12 Jul):

  • Morning surf: Morning surf (12 Jul, local time) - 3.5ft (1.1m), 11s period with S swell.
  • Afternoon surf: Afternoon surf (12 Jul, local time) - 3.5ft (1.1m), 11s period with S swell.
  • Evening surf: Evening surf (12 Jul, local time) - 5.5ft (1.7m), 7s period with ESE swell.

The current surf forecast for Arniston at 2PM is: 1.1m 11s primary swell from a South direction and 0.1m 16s secondary swell from a Southwest direction, 1.7m 7s secondary swell from a East-southeast direction (forecast issued at 07:00am July 12). The wind direction is predicted to be cross-onshore.

Time (SAST) & DateWave HeightWave Period
Morning (12 Jul)3.5ft (1.1m)11s
Afternoon (12 Jul)3.5ft (1.1m)11s
Evening (12 Jul)5.5ft (1.7m)7s

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


Short Range Forecast

Mostly dry. Very mild (max 17°C on Tue afternoon, min 14°C on Mon morning). Winds decreasing (fresh winds from the E on Sun afternoon, calm by Mon morning).

Sunday
12
Monday
13
Tuesday
14
Wed
15
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
2 AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
1
2
1
1
1
2
2
2
2
2
1
1
1
2
2
Swell
Height Map
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)
1.2
SSW
11
1.1
SSW
11
1.1
S
11
1.1
S
11
1.7
ESE
7
1.7
ESE
7
1.6
ESE
7
1.5
ESE
7
1.3
ESE
7
1.3
ESE
7
1.4
ESE
8
1.4
ESE
8
1.3
ESE
8
1.3
ESE
8
1.3
ESE
8
1.3
ESE
8
1.1
E
8
1.1
E
8
1.3
ESE
8
1.3
ESE
9
1.3
ESE
9
1.1
ESE
9
1.1
ESE
9
1.1
ESE
9
Wave Graph
Metric surfscale
Energy kJ
370
308
286
281
241
241
222
204
168
183
214
220
196
196
191
186
161
165
221
237
237
202
206
206
Wind (km/h)
30
E
30
E
30
E
35
E
35
E
30
E
20
E
20
ENE
15
ENE
10
NE
5
NE
5
ESE
10
ESE
10
NE
5
NW
10
NW
10
WNW
10
WNW
15
W
20
WSW
20
WSW
25
W
15
WNW
15
WNW
Wind State
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross
glassy
on
on
cross-on
cross-off
cross-off
off
off
off
cross-off
cross-off
cross-off
off
off
High Tide
1:53PM1.65m
2:06AM1.83m
2:43PM1.80m
2:56AM1.90m
3:28PM1.90m
Low Tide
7:40AM0.23m
7:58PM0.33m
8:32AM0.11m
8:51PM0.22m
9:18AM0.04m
9:40PM0.14m
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:45
7:43
7:43
7:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:44
5:44
5:45
5:45
 mm
Temp °C
15
15
15
16
16
15
15
15
15
14
15
16
16
16
16
15
15
14
15
17
16
15
15
15
Feels °C
10
10
10
11
11
11
12
13
13
13
15
15
15
15
15
13
13
12
12
13
12
11
12
13
  • 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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