Arniston surf break

Arniston surfForecast / Overberg / South Africa

information circle48hr Weather and Surf, issued 7 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 3AM is: 0.7m 13s primary swell from a Southwest direction and 0.8m 6s secondary swell from a East-southeast direction (forecast issued at 07:00pm May 17). The wind direction is predicted to be onshore.

Time (SAST) & DateWave HeightWave Period
Morning (18 May)2.5ft (0.8m)14s
Afternoon (18 May)3ft (0.9m)14s
Evening (18 May)4ft (1.2m)8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 10mm), heaviest on Tue afternoon. Very mild (max 18°C on Sun night, min 17°C on Sun night). Winds increasing (light winds from the ESE on Sun night, strong winds from the ESE by Tue night).

Sun
17
Monday
18
Tuesday
19
Wed
20
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
11 AM
2 PM
Rating
(10 max)
0
0
0
0
0
0
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)
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
1.1
S
8
1.3
S
8
1.6
S
8
2.5
SE
8
2.5
SE
8
2.5
SE
8
3.5
ESE
8
3.5
ESE
8
3
ESE
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
184
195
181
176
176
228
326
309
293
149
217
324
836
854
857
1291
1526
1363
1563
1606
1312
1296
1283
1494
Wind (km/h)
10
SSE
10
SE
10
ESE
10
ESE
10
ESE
15
ESE
25
ESE
25
ESE
30
ESE
35
ESE
35
ESE
35
ESE
35
ESE
35
ESE
40
ESE
45
E
45
ESE
45
ESE
40
E
40
E
40
E
25
E
25
ESE
25
E
cross-on
cross-on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
on
High Tide
3:41PM1.88m
3:54AM1.99m
4:26PM1.84m
4:40AM1.88m
5:14PM1.77m
5:30AM1.73m
Low Tide
9:44PM0.14m
10:14AM0.02m
10:31PM0.20m
11:01AM0.12m
11:23PM0.30m
11:50AM0.25m
clear
clear
part cloud
part cloud
clear
clear
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
cloud
clear
cloud
<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
2
3
1
2
1
1
Temp °C
17
17
17
17
18
18
18
18
18
18
18
18
17
17
18
18
17
17
18
18
17
17
18
18
16
16
17
17
18
17
15
14
14
13
13
13
12
12
12
11
10
10
12
12
12
14
15
15
Swell 1
Height (m)
Direction
Period (s)
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
1.1
S
8
1.3
S
8
1.6
S
8
0.6
SW
14
0.6
SW
13
0.6
SW
13
0.6
SW
13
0.6
SW
13
0.4
SW
13
0.6
SSE
13
0.6
SSE
12
0.6
SSE
12
0.4
SW
12
0.3
SW
12
2.5
ESE
9
Energy kJ
184
135
130
45
176
228
326
309
293
149
217
324
116
142
113
111
108
60
111
104
101
52
23
1157
Swell 2
Height (m)
Direction
Period (s)
0.7
ESE
6
0.7
ESE
6
0.8
ESE
6
0.7
SW
13
0.7
S
10
0.6
S
10
0.7
SSE
13
0.6
S
13
0.6
S
12
0.6
SW
14
0.6
SW
13
0.6
SW
12
0.2
SSW
12
0.3
SSE
15
0.4
SE
15
0.4
SSE
14
0.4
SSE
14
0.4
SSE
14
0.4
SW
13
0.4
SW
13
0.4
SW
12
0.3
SSW
9
0.2
S
16
0.3
SW
12
Energy kJ
31
34
44
176
98
77
173
115
104
116
113
96
14
45
55
78
73
71
59
56
53
16
20
23
Swell 3
Height (m)
Direction
Period (s)
0.6
SW
14
0.7
SW
14
0.7
SW
14
0.6
SSE
14
0.7
ESE
6
0.5
S
5
0.5
S
13
0.7
S
12
0.5
SSW
8
0.5
SSW
13
0.5
SSW
12
0.4
SSW
13
0.2
SSE
16
0.2
SSW
11
0.3
SSW
11
0.3
SSW
10
0.3
SSW
10
0.3
SSW
10
0.4
SSW
9
0.3
SSW
9
0.3
SSW
9
0.1
SW
16
0.2
SSW
16
0.2
SSW
15
Energy kJ
164
195
181
143
43
13
85
148
36
99
89
62
25
11
22
19
18
18
29
17
17
11
25
23
Wind waves
Height (m)
Direction
Period (s)
0.7
ESE
6
0.9
SE
6
1.1
SE
5
1.1
SE
5
1.1
ESE
5
1.4
ESE
5
1.6
ESE
6
2.5
SE
8
2.5
SE
8
2.5
SE
8
3.5
ESE
8
3.5
ESE
8
3
ESE
8
3.5
ESE
8
3.5
ESE
9
3
ESE
9
3
ESE
9
3
ESE
9
3
ESE
9
Energy kJ
44
64
58
72
52
111
198
836
854
857
1291
1526
1363
1563
1606
1312
1296
1283
1494
Nearest Offshore or Glassy
Rating
(10 max)
2
4
3
3
3
4
4
4
4
3
4
3
2
4
3
3
3
3
3
4
2
2
2
4
Distance (km)
107
81
81
81
81
81
81
191
191
144
191
144
184
186
144
140
144
144
144
140
140
81
81
81
Best forecast wave conditions in Overberg
Rating
(10 max)
2
4
3
3
3
4
4
3
4
2
3
3
4
Best forecast wave conditions in South Africa
Rating
(10 max)
3
4
4
3
4
4
4
4
4
4
4
4
4
4
4
3
4
4
4
4
4
4
4
4
Header Global
Rating
(10 max)
8
6
4
4
5
7
5
4
5
4
4
4
4
4
4
4
4
4
4
4
5
4
4
5
  • 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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