Arniston surf break

Arniston surfForecast / Overberg / South Africa

information circle48hr Weather and Surf, issued 7 pm Monday 18 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
17.1° C
(Which is normal for this time of year)

How big are the waves at Arniston today?

The current surf forecast for Arniston at 11PM is: 1.4m 8s primary swell from a South direction and 0.6m 13s secondary swell from a Southwest direction, 1.4m 6s secondary swell from a East-southeast direction (forecast issued at 07:00pm May 18). The wind direction is predicted to be onshore.

Time (SAST) & DateWave HeightWave Period
Morning (18 May)--
Afternoon (18 May)3ft (0.9m)14s
Evening (18 May)4.5ft (1.3m)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 5mm), mostly falling on Tue night. Warm (max 20°C on Thu afternoon, min 16°C on Mon night). Winds decreasing (strong winds from the E on Tue night, light winds from the N by Thu morning).

Mon
18
Tuesday
19
Wednesday
20
Thu
21
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
!
!
!
!
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
SW
14
1.2
S
8
1.4
S
8
2.5
SE
7
3
SE
8
2.5
SE
8
2.5
ESE
8
2.5
ESE
8
3
ESE
8
3
ESE
8
3
ESE
8
3
ESE
8
3.5
ESE
9
3
ESE
9
3
ESE
8
3.5
ESE
9
3
ESE
9
3
ESE
9
3
ESE
9
3
ESE
9
3
E
9
2.4
ESE
9
2.2
ESE
9
2.1
ESE
9
Wave Graph
Metric surfscale
Energy kJ
297
172
229
658
960
875
833
867
1194
1397
1331
1302
1630
1337
1476
1602
1456
1284
1313
1317
1541
942
802
697
Wind (km/h)
35
ESE
35
ESE
35
ESE
40
E
40
ESE
35
E
35
E
40
E
45
E
40
E
45
E
50
E
45
E
40
E
40
E
45
E
40
E
30
E
30
E
25
E
10
ENE
5
N
10
W
20
WSW
on
on
on
on
on
on
on
cross-on
on
on
on
on
cross-on
cross-on
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross-on
cross-off
off
cross-off
High Tide
4:26PM1.84m
4:40AM1.88m
5:14PM1.77m
5:30AM1.73m
6:07PM1.67m
6:25AM1.56m
Low Tide
10:31PM0.20m
11:01AM0.12m
11:23PM0.30m
11:50AM0.25m
00:21AM0.42m
12:45PM0.38m
cloud
cloud
cloud
part cloud
thunderstorm
part cloud
cloud
light rain
cloud
rain showers
light rain
cloud
cloud
part cloud
cloud
cloud
clear
part cloud
part cloud
clear
clear
clear
clear
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:28
7:28
7:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:43
5:42
5:40
5:40
1
1
2
1
Temp °C
18
18
18
17
16
17
17
17
17
17
17
17
17
17
17
18
18
17
17
17
16
16
18
20
13
13
13
11
10
12
12
11
10
11
10
10
10
11
11
12
12
13
13
15
15
16
17
17
Swell 1
Height (m)
Direction
Period (s)
0.9
SW
14
1.2
S
8
1.4
S
8
0.6
SW
12
0.6
SW
13
0.6
SW
14
0.6
SW
13
0.6
SW
13
0.5
SW
13
0.4
SW
13
0.6
SSE
13
0.6
SSE
13
0.6
SSE
12
0.6
SSE
12
0.3
SW
12
0.3
SW
12
0.3
SW
12
0.3
SSW
15
0.4
SW
14
0.4
SSW
14
2.5
ESE
9
2.4
ESE
9
2.2
ESE
9
2.1
ESE
9
Energy kJ
297
172
229
96
142
116
113
111
84
60
113
106
104
103
23
23
22
42
53
78
1175
942
802
697
Swell 2
Height (m)
Direction
Period (s)
0.6
SSW
8
0.6
SW
14
0.6
SW
13
0.4
SSW
12
0.3
SSW
12
0.3
SSW
11
0.3
SSE
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
0.4
SW
12
0.2
S
16
0.2
SSW
15
0.2
SSW
15
0.3
SW
12
0.4
SSW
14
0.4
SW
11
0.4
SSW
14
0.4
SSW
13
0.4
SW
13
0.4
SW
13
Energy kJ
50
116
113
60
27
24
42
78
73
71
59
57
53
52
20
23
21
21
80
30
71
69
44
40
Swell 3
Height (m)
Direction
Period (s)
0.6
S
12
0.5
SSW
13
0.5
SSW
12
0.2
SSE
16
0.2
SSE
16
0.3
SSE
15
0.3
SSW
11
0.3
SSW
10
0.2
SSW
10
0.3
SSW
10
0.3
SSW
9
0.3
SSW
9
0.3
SSW
9
0.3
SSW
9
0.3
SSW
9
0.2
SSW
15
0.3
SSW
15
0.4
SW
14
0.4
SW
11
0.4
SE
11
0.2
WSW
11
0.1
S
22
0.1
S
21
0.1
SW
21
Energy kJ
104
99
89
26
25
45
22
20
10
18
17
17
16
16
16
23
43
54
30
33
11
9
9
18
Wind waves
Height (m)
Direction
Period (s)
1.4
ESE
5
1.4
ESE
6
1.4
ESE
6
2.5
SE
7
3
SE
8
2.5
SE
8
2.5
ESE
8
2.5
ESE
8
3
ESE
8
3
ESE
8
3
ESE
8
3
ESE
8
3.5
ESE
9
3
ESE
9
3
ESE
8
3.5
ESE
9
3
ESE
9
3
ESE
9
3
ESE
9
3
ESE
9
3
E
9
Energy kJ
110
124
118
658
960
875
833
867
1194
1397
1331
1302
1630
1337
1476
1602
1456
1284
1313
1317
1541
Nearest Offshore or Glassy
Rating
(10 max)
4
3
2
3
3
2
3
4
2
3
3
2
2
2
3
3
3
2
1
1
4
1
1
1
Distance (km)
191
184
184
144
184
184
144
140
140
140
144
140
140
140
137
137
137
81
81
76
65
19
19
19
Best forecast wave conditions in Overberg
Rating
(10 max)
4
2
3
2
2
2
3
3
3
3
3
2
4
4
3
3
Best forecast wave conditions in South Africa
Rating
(10 max)
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
3
4
4
4
3
Header Global
Rating
(10 max)
5
5
4
4
4
4
4
4
5
4
5
5
5
4
5
5
4
5
5
4
4
5
5
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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