Arniston surf break

Arniston surfForecast / Overberg / South Africa

information circle48hr Weather and Surf, issued 1 am Thursday 21 May 2026 SAST
Forecast update in hr  min  s Forecast update imminent
Arniston surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Arniston sea temperature is
17.0° C
(Which is normal for this time of year)

How big are the waves at Arniston today?

The current surf forecast for Arniston at 10AM is: 2.0m 9s primary swell from a East-southeast direction and 0.4m 13s secondary swell from a South-southwest direction (forecast issued at 01:00am May 21). The wind direction is predicted to be offshore and the swell rating is 3.

Time (SAST) & DateWave HeightWave Period
Morning (21 May)7ft (2.1m)9s
Afternoon (21 May)5.5ft (1.7m)9s
Evening (21 May)5ft (1.5m)8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 2mm), mostly falling on Fri morning. Very mild (max 19°C on Thu afternoon, min 15°C on Fri night). Winds decreasing (fresh winds from the WNW on Thu night, light winds from the NW by Sat morning).

Thursday
21
Friday
22
Saturday
23
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)
!
!
!
2
1
1
0
1
2
1
1
0
1
2
2
2
2
2
2
2
1
0
1
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
2.5
ESE
9
2.2
ESE
9
2.1
ESE
9
2
ESE
9
1.8
ESE
9
1.6
ESE
8
1.5
ESE
8
1.4
ESE
8
1.2
ESE
8
1.1
ESE
8
1
E
8
0.9
ESE
8
0.6
SSW
16
0.7
SW
16
0.7
SW
16
0.7
SW
15
0.8
SSW
15
0.7
SW
14
0.7
SW
14
0.7
SW
13
0.6
SSW
13
0.7
SW
13
0.7
SW
14
0.7
SW
14
Wave Graph
Metric surfscale
Energy kJ
908
714
631
589
490
361
306
256
212
176
137
111
175
261
255
223
272
211
203
172
109
162
211
214
Wind (km/h)
10
ENE
10
WNW
15
WNW
20
W
25
WSW
25
WSW
30
W
25
W
25
WNW
30
WNW
25
W
25
WSW
25
SW
15
SW
10
WSW
10
W
10
WNW
10
NW
10
NNW
5
NW
10
S
5
SE
10
E
10
ENE
cross-on
off
off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
cross-off
off
cross
on
cross-on
cross-on
High Tide
6:25AM1.56m
7:07PM1.57m
7:30AM1.40m
8:20PM1.50m
8:52AM1.30m
9:39PM1.48m
Low Tide
00:21AM0.42m
12:45PM0.38m
1:30AM0.54m
1:49PM0.51m
2:54AM0.61m
3:05PM0.59m
clear
cloud
part cloud
clear
clear
clear
part cloud
clear
clear
cloud
part cloud
light rain
light rain
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:28
7:30
7:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:40
5:39
5:39
1
1
Temp °C
17
17
17
18
19
19
17
16
16
16
17
18
17
17
17
16
15
15
16
17
18
18
17
17
17
17
16
15
15
16
13
12
13
12
14
14
14
15
16
15
14
13
14
16
17
17
16
15
Swell 1
Height (m)
Direction
Period (s)
2.2
ESE
9
2.2
ESE
9
2.1
ESE
9
2
ESE
9
1.8
ESE
9
1.6
ESE
8
1.5
ESE
8
1.4
ESE
8
1.2
ESE
8
1.1
ESE
8
1
E
8
0.9
ESE
8
0.8
E
8
1.2
S
7
1.1
S
7
1.1
S
7
0.9
S
7
0.8
S
6
0.7
SW
14
0.7
SW
13
0.6
SSW
13
0.7
SW
13
0.7
SW
14
0.7
SW
14
Energy kJ
698
714
631
589
490
361
306
256
212
176
137
109
82
142
117
110
69
51
203
172
109
162
211
214
Swell 2
Height (m)
Direction
Period (s)
0.4
SE
11
0.4
SSW
14
0.4
SSW
13
0.4
SSW
13
0.4
SW
12
0.4
SW
12
0.4
SW
12
0.4
SW
12
0.4
SSW
18
0.4
SSW
18
0.4
SSW
18
0.4
SSW
17
0.6
SSW
16
0.7
E
8
0.7
SW
16
0.7
SW
15
0.8
SSW
15
0.7
SW
14
0.7
S
6
0.6
S
6
0.5
S
6
0.4
SSE
6
0.5
SW
8
0.5
E
11
Energy kJ
33
71
69
67
40
37
37
37
128
124
123
111
175
58
255
223
272
211
36
25
16
12
32
64
Swell 3
Height (m)
Direction
Period (s)
0.3
SSW
14
0.2
SSE
11
0.2
SSE
11
0.1
SE
11
0.1
S
13
0.2
SSW
20
0.3
SSW
20
0.3
SSW
19
0.4
SW
12
0.4
SW
11
0.3
S
10
0.4
SW
11
0.4
SW
11
0.7
SW
16
0.6
E
8
0.6
E
8
0.5
E
8
0.5
E
8
0.5
E
8
0.4
E
8
0.4
SSW
16
0.4
SW
8
0.4
SSE
5
0.4
SW
8
Energy kJ
39
13
12
5
3
38
75
74
36
33
19
33
33
261
42
42
29
30
31
20
94
24
11
22
Wind waves
Height (m)
Direction
Period (s)
2.5
ESE
9
0.4
WSW
3
0.4
WSW
3
0.6
WSW
4
0.6
W
4
0.7
W
3
0.6
W
3
0.6
W
3
0.6
WSW
5
0.9
SSW
7
Energy kJ
908
2
3
10
9
11
8
8
19
77
Nearest Offshore or Glassy
Rating
(10 max)
2
1
1
1
2
2
2
1
2
2
1
3
2
2
2
2
2
2
2
2
2
3
3
3
Distance (km)
76
19
19
19
65
65
65
65
0
103
65
110
135
0
0
0
0
0
0
0
19
81
81
76
Best forecast wave conditions in Overberg
Rating
(10 max)
2
3
3
3
3
3
2
2
2
2
2
3
2
3
3
3
3
3
3
3
3
3
3
3
Best forecast wave conditions in South Africa
Rating
(10 max)
4
4
4
3
3
3
3
3
3
2
2
3
2
3
3
3
3
3
3
3
3
3
4
4
Header Global
Rating
(10 max)
5
5
5
5
5
4
5
4
4
5
7
8
7
6
5
5
6
7
7
8
8
7
6
6
  • 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

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