Nine Mile Reef surfForecast / Cape Town / South Africa

information circle48hr Weather and Surf, issued 7 pm Monday 18 May 2026 SAST
Forecast update in hr  min  s Forecast update imminent
Nine Mile Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Nine Mile Reef sea temperature is
17.0° C
(Which is normal for this time of year)

How big are the waves at Nine Mile Reef today?

The current surf forecast for Nine Mile Reef at 12AM is: 1.9m 8s primary swell from a South-southeast direction and 0.8m 13s secondary swell from a Southwest direction, 0.2m 12s secondary swell from a South-southeast direction (forecast issued at 07:00pm May 18). The wind direction is predicted to be cross-shore.

Time (SAST) & DateWave HeightWave Period
Morning (19 May)7ft (2.1m)9s
Afternoon (19 May)10ft (3.0m)8s
Evening (19 May)6ft (1.8m)10s

Table - waves today at Nine Mile Reef. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 2mm), mostly falling on Wed afternoon. Warm (max 21°C on Tue afternoon, min 16°C on Wed morning). Wind will be generally light.

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
1
0
0
0
0
!
0
0
1
1
1
1
!
!
!
1
2
1
1
1
1
1
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
1.9
SSE
8
1.9
SSE
8
1.9
SSE
8
2.1
SSE
8
2.1
SSE
9
2
SSE
9
3
SE
8
1.4
SE
8
1.8
SE
10
1.6
SE
10
1.6
SE
9
1.5
SE
8
1.4
SE
8
2.5
SE
8
2.4
SE
8
2.3
SE
8
1.1
SE
8
1.7
SE
8
0.4
SSE
11
0.5
SW
13
0.5
SW
13
0.5
SW
13
0.5
SW
12
Wave Graph
Metric surfscale
Energy kJ
308
410
464
488
638
716
591
1109
261
575
452
433
282
250
844
754
760
133
408
40
88
87
84
74
Wind (km/h)
25
SE
25
ESE
20
ESE
20
ESE
20
ESE
20
SE
20
ESE
15
SE
15
SE
20
SE
15
ESE
15
ESE
15
ESE
10
E
5
ESE
5
SSW
5
S
5
ESE
5
E
5
NE
5
NNW
10
N
10
NNW
15
NW
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross-on
cross
cross
cross
glassy
glassy
cross-on
cross
cross-off
off
off
off
cross-off
High Tide
4:28PM1.53m
4:43AM1.56m
5:17PM1.48m
5:34AM1.44m
6:10PM1.40m
6:30AM1.31m
Low Tide
10:34PM0.15m
11:02AM0.08m
11:26PM0.22m
11:52AM0.19m
00:24AM0.32m
12:48PM0.30m
cloud
cloud
part cloud
cloud
cloud
cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
thunderstorm
thunderstorm
cloud
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:33
7:33
7:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:50
5:50
5:49
5:47
1
1
Temp °C
20
18
17
17
17
17
19
21
21
18
17
17
17
16
18
21
19
19
19
19
18
17
19
21
17
15
14
14
14
15
17
19
19
16
15
16
16
15
18
21
19
19
19
19
18
16
18
19
Swell 1
Height (m)
Direction
Period (s)
0.9
SW
14
0.9
SW
13
0.8
SW
13
0.8
SW
13
0.7
SW
13
0.7
SW
13
0.7
SW
13
1.7
SSE
8
0.8
S
10
0.6
SW
13
0.6
SW
13
0.5
SW
12
0.5
SW
12
0.5
SSE
11
1.2
SE
8
1.2
SSE
8
1
SSE
8
0.4
SSE
11
0.9
SSE
8
0.6
S
7
0.6
S
7
0.7
SSE
7
0.6
S
7
0.5
S
7
Energy kJ
308
290
235
228
168
173
171
379
120
104
103
74
72
71
169
150
120
46
88
35
34
57
38
25
Swell 2
Height (m)
Direction
Period (s)
0.9
S
8
0.3
SSE
12
0.2
SSE
12
0.2
S
12
0.1
S
16
0.1
S
16
0.2
S
15
0.6
SW
13
0.6
SW
13
0.3
SSE
14
0.3
SSE
14
0.3
SSE
13
0.3
SSE
12
0.4
SW
12
0.6
SSE
11
0.5
SSE
11
0.5
SSE
11
0.3
SW
11
0.4
SSE
11
0.4
SE
8
0.5
SW
13
0.5
SW
13
0.5
SW
13
0.5
SW
12
Energy kJ
93
30
15
11
5
5
18
138
136
36
36
32
31
51
91
68
64
20
39
24
88
87
84
74
Swell 3
Height (m)
Direction
Period (s)
0.3
SSE
13
0.1
S
18
0.1
S
17
0.2
SSE
15
0.2
SSE
14
0.2
SSW
9
0.1
S
17
0.4
SW
12
0.4
SW
12
0.4
SW
12
0.3
SSW
15
0.3
SSW
14
0.4
SSE
11
0.4
SE
8
0.2
SSE
11
0.2
SSE
11
0.2
SSE
11
Energy kJ
31
6
6
21
19
9
5
50
50
35
42
41
40
25
12
11
12
Wind waves
Height (m)
Direction
Period (s)
1.3
SE
5
1.9
SSE
8
1.9
SSE
8
1.9
SSE
8
2.1
SSE
8
2.1
SSE
9
2
SSE
9
3
SE
8
1.4
SE
8
1.8
SE
10
1.6
SE
10
1.6
SE
9
1.5
SE
8
1.4
SE
8
2.5
SE
8
2.4
SE
8
2.3
SE
8
1.1
SE
8
1.7
SE
8
0.2
WNW
2
Energy kJ
100
410
464
488
638
716
591
1109
261
575
452
433
282
250
844
754
760
133
408
1
Nearest Offshore or Glassy
Rating
(10 max)
4
3
1
3
3
1
3
4
2
3
3
3
2
2
4
2
3
2
3
1
1
1
1
1
Distance (km)
31
27
26
16
27
26
16
16
22
22
16
16
12
12
12
10
12
16
10
0
0
0
0
0
Best forecast wave conditions in Cape Town
Rating
(10 max)
4
4
4
4
4
4
4
4
4
4
4
3
4
4
4
4
3
3
3
2
3
3
3
1
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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