Arniston surf break

Arniston surfForecast / Overberg / South Africa

information circle48hr Weather and Surf, issued 1 pm Sunday 17 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
17.2° C
(Which is normal for this time of year)

How big are the waves at Arniston today?

The current surf forecast for Arniston at 5PM is: 0.9m 11s primary swell from a South direction and 0.7m 6s secondary swell from a East-southeast direction (forecast issued at 01:00pm May 17). The wind direction is predicted to be cross-onshore.

Time (SAST) & DateWave HeightWave Period
Morning (17 May)3.5ft (1.1m)11s
Afternoon (17 May)3ft (0.9m)11s
Evening (17 May)2.5ft (0.7m)14s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 31mm), heaviest during Tue night. Very mild (max 18°C on Mon morning, min 15°C on Tue night). Winds increasing (light winds from the ESE on Sun night, strong winds from the E by Tue afternoon).

Sun
17
Monday
18
Tuesday
19
Wed
20
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
5 AM
8 AM
Rating
(10 max)
1
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1
S
11
0.9
S
11
0.9
S
11
0.7
SW
14
0.7
SW
14
0.7
SW
13
0.7
SW
13
0.8
SW
14
0.9
SW
15
0.9
SW
15
0.9
SW
14
1.5
SSE
8
1.4
S
8
2.2
SSE
8
2.4
SSE
8
2.5
SE
8
2.5
SE
8
2.1
SSE
8
3.5
ESE
8
3.5
ESE
9
3
ESE
9
3
ESE
9
3
ESE
9
3
ESE
9
Wave Graph
Metric surfscale
Energy kJ
235
184
184
195
181
176
176
228
326
309
293
313
252
590
750
824
808
630
1444
1755
1546
1463
1488
1354
Wind (km/h)
10
SSW
15
S
10
SSE
10
SE
10
ESE
10
ESE
15
ESE
15
ESE
20
ESE
25
ESE
25
ESE
30
ESE
35
ESE
35
ESE
35
ESE
35
E
40
E
45
E
45
E
35
ESE
40
E
40
E
35
E
30
ESE
cross
cross-on
cross-on
cross-on
on
on
on
on
on
on
on
on
on
on
on
on
cross-on
cross-on
on
on
on
on
cross-on
on
High Tide
3:41PM1.88m
3:54AM1.99m
4:26PM1.84m
4:40AM1.88m
5:14PM1.77m
5:30AM1.73m
Low Tide
9:30AM-0.03m
9:44PM0.14m
10:14AM0.02m
10:31PM0.20m
11:01AM0.12m
11:23PM0.30m
clear
clear
clear
clear
part cloud
clear
clear
part cloud
light rain
light rain
cloud
cloud
thunderstorm
thunderstorm
part cloud
thunderstorm
thunderstorm
thunderstorm
cloud
light rain
mod rain
thunderstorm
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:26
7:28
7:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:43
5:43
5:42
5:40
1
1
1
1
1
5
1
1
10
2
5
1
Temp °C
17
17
17
17
17
17
17
17
18
18
18
18
18
18
18
18
18
18
16
15
18
18
17
17
16
16
16
16
17
17
16
15
15
14
14
13
13
13
13
13
12
11
9
10
12
12
12
14
Swell 1
Height (m)
Direction
Period (s)
1
S
11
0.9
S
11
0.9
S
11
0.8
S
10
0.8
S
10
0.8
ESE
6
0.7
SW
13
0.8
SW
14
0.9
SW
15
0.9
SW
15
0.9
SW
14
0.6
SW
14
1.4
S
8
0.6
SW
12
0.6
SW
14
0.6
SW
13
0.6
SW
13
2.1
SSE
8
0.6
SW
13
0.5
SSE
13
0.4
SW
13
0.6
SSE
12
0.4
SW
12
0.4
SW
12
Energy kJ
235
184
184
135
130
45
176
228
326
309
293
116
252
96
123
113
113
630
108
102
59
104
53
52
Swell 2
Height (m)
Direction
Period (s)
0.6
SW
13
0.7
ESE
6
0.7
ESE
6
0.7
ESE
6
0.8
ESE
6
0.7
SW
13
0.7
ESE
6
0.7
E
6
0.7
SSE
13
0.6
S
13
0.6
S
12
0.5
SSW
13
0.6
SW
13
0.4
SSW
12
0.3
SSW
12
0.3
SSE
15
0.3
SSE
15
0.6
SW
13
0.4
SSE
14
0.4
SW
13
0.6
SSE
13
0.4
SW
13
0.3
SSW
9
0.6
SW
12
Energy kJ
132
30
31
34
44
176
43
41
173
115
104
99
113
61
29
45
42
111
73
60
116
56
17
116
Swell 3
Height (m)
Direction
Period (s)
0.6
ESE
6
0.5
SW
12
0.6
SW
14
0.7
SW
14
0.7
SW
14
0.6
SSE
14
0.6
S
10
0.6
S
10
0.5
S
13
0.7
S
12
0.5
SSW
8
0.4
SSE
12
0.5
SSW
12
0.2
SSE
16
0.2
SSE
16
0.3
SSW
11
0.4
SSE
14
0.4
SW
10
0.3
SSW
10
0.3
SSW
10
0.3
SSW
9
0.3
SSW
9
0.3
SSW
9
Energy kJ
22
71
164
195
181
143
74
77
85
148
37
47
89
26
25
23
78
25
18
18
17
16
16
Wind waves
Height (m)
Direction
Period (s)
1
SE
6
1.1
SE
6
1.1
SE
6
1.5
SSE
8
1.2
ESE
5
2.2
SSE
8
2.4
SSE
8
2.5
SE
8
2.5
SE
8
2
E
7
3.5
ESE
8
3.5
ESE
9
3
ESE
9
3
ESE
9
3
ESE
9
3
ESE
9
Energy kJ
74
75
69
313
77
590
750
824
808
374
1444
1755
1546
1463
1488
1354
Nearest Offshore or Glassy
Rating
(10 max)
3
2
2
4
3
3
3
3
4
4
4
4
3
2
3
4
4
3
3
3
3
3
2
4
Distance (km)
81
113
113
81
81
81
81
81
81
191
81
81
192
184
186
191
190
140
144
144
81
81
137
81
Best forecast wave conditions in Overberg
Rating
(10 max)
3
2
2
4
3
3
3
3
4
4
4
3
4
3
2
4
Best forecast wave conditions in South Africa
Rating
(10 max)
3
4
2
4
4
4
4
4
4
4
4
4
4
4
4
4
4
3
4
4
4
4
4
4
Header Global
Rating
(10 max)
7
4
8
6
4
4
5
6
5
4
5
4
5
4
4
4
4
4
4
4
4
4
4
4
  • 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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