Arniston Surf Break

Lat Long: 34.69° S 20.23° E

Arniston 48 hour detailed Surf Forecast

Issued: 1 am 23 Sep 2026 (local time)

Forecast update in  hr  min

Today's Arniston sea temperature is
16.0°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 (23 Sep):

  • Morning surf: Morning surf (23 Sep, local time) - 3ft (0.9m), 8s period with ESE swell.
  • Afternoon surf: Afternoon surf (23 Sep, local time) - 3.5ft (1.1m), 8s period with ESE swell.
  • Evening surf: Evening surf (23 Sep, local time) - 4.5ft (1.3m), 8s period with ESE swell.

The current surf forecast for Arniston at 9AM is: 0.9m 8s primary swell from a East-southeast direction and 0.6m 11s secondary swell from a South-southwest direction (forecast issued at 01:00am September 23). The wind direction is predicted to be cross-offshore.

Time (SAST) & DateWave HeightWave Period
Morning (23 Sep)3ft (0.9m)8s
Afternoon (23 Sep)3.5ft (1.1m)8s
Evening (23 Sep)4.5ft (1.3m)8s

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


Short Range Forecast

Some drizzle, heaviest during Wed morning. Warm (max 22°C on Fri afternoon, min 16°C on Wed morning). Winds decreasing (fresh winds from the E on Thu morning, calm by Fri morning).

Wednesday
23
Thursday
24
Friday
25
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)
1
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
1
1
3
2
1
1
1
1
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)
1
E
8
0.7
SSW
11
0.7
SSW
11
1
E
8
1.1
E
8
1.1
ESE
8
1.3
ESE
8
1.2
E
8
1.4
E
8
1.5
E
8
1.6
ESE
7
1.1
S
16
1.3
SSW
15
1.5
SSW
14
1.4
SSW
13
1.4
SSW
13
1.3
SSW
13
1.2
SSW
12
1.2
SSW
12
1.1
SSW
12
1.1
SSW
12
1
SSW
12
1.1
SSW
12
1
SSW
12
Wave Graph
Metric surfscale
Energy kJ
115
101
101
134
169
176
228
200
270
302
251
589
744
803
642
613
514
433
393
322
322
265
317
303
Wind (km/h)
15
WSW
15
WSW
20
WSW
20
SW
20
SSW
15
ESE
25
ESE
20
ESE
25
E
30
E
35
E
30
E
30
ESE
30
ESE
25
E
15
E
15
ENE
15
ENE
0
W
10
ENE
10
SE
10
SSE
10
ESE
10
E
Wind State
cross-off
cross-off
cross-off
cross-off
cross
on
on
on
on
on
cross-on
on
on
on
cross-on
cross-on
cross-on
cross-on
glassy
cross-on
on
cross-on
on
cross-on
High Tide
1:15AM1.50m
1:36PM1.65m
1:45AM1.64m
2:02PM1.81m
2:15AM1.76m
2:30PM1.94m
Low Tide
7:26AM0.40m
7:48PM0.37m
7:52AM0.26m
8:15PM0.22m
8:19AM0.16m
8:43PM0.10m
rain showers
part cloud
rain showers
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:28
6:26
6:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:35
6:36
6:37
 mm
1
1
Temp °C
19
17
16
17
17
18
17
17
17
16
16
16
16
16
16
16
17
16
17
19
21
22
19
18
Feels °C
18
16
14
15
15
18
15
15
14
12
12
12
12
12
13
15
17
16
19
20
22
22
19
18
  • 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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