Nine Mile Reef surfForecast / Cape Town / South Africa

information circle48hr Weather and Surf, issued 1 am Wednesday 20 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
16.6° C
(Which is slightly cooler than normal)

How big are the waves at Nine Mile Reef today?

The current surf forecast for Nine Mile Reef at 5AM is: 1.6m 8s primary swell from a Southeast direction and 0.4m 12s secondary swell from a Southwest direction, 0.4m 12s secondary swell from a South-southeast direction (forecast issued at 01:00am May 20). The wind direction is predicted to be cross-onshore.

Time (SAST) & DateWave HeightWave Period
Morning (20 May)4.5ft (1.3m)8s
Afternoon (20 May)7ft (2.2m)9s
Evening (20 May)6ft (1.8m)8s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Some drizzle, heaviest during Fri afternoon. Warm (max 21°C on Wed afternoon, min 15°C on Thu night). Wind will be generally light.

Wednesday
20
Thursday
21
Friday
22
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)
1
0
1
!
!
!
3
1
1
1
1
1
1
0
1
1
2
2
2
2
2
2
2
1
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.7
SE
9
1.6
SE
8
1.3
SSE
8
2.3
SE
9
2.2
SE
9
2.1
SE
9
1.8
SE
8
0.6
SE
8
0.4
SSE
11
0.5
SW
13
0.5
SW
13
0.5
SW
13
0.5
SW
12
0.3
SW
20
0.4
SW
20
0.4
SW
19
0.5
SW
18
0.5
SW
18
0.5
SW
18
0.6
SSW
16
0.7
SW
16
0.7
SW
16
0.8
SW
16
0.8
SW
15
Wave Graph
Metric surfscale
Energy kJ
449
338
208
745
714
625
479
41
40
88
87
84
74
60
97
95
157
155
152
179
264
261
291
258
Wind (km/h)
15
ESE
15
ESE
10
ESE
5
ESE
5
SSW
5
SSW
5
ESE
5
ENE
5
N
10
N
15
N
15
NNW
15
NNW
15
NW
10
N
15
N
15
N
15
N
15
N
15
N
10
NNW
5
NNW
5
SE
5
S
cross-on
cross-on
cross
cross
glassy
on
glassy
glassy
glassy
off
off
off
cross-off
cross-off
off
off
off
off
off
off
off
glassy
glassy
on
High Tide
5:34AM1.44m
6:10PM1.40m
6:30AM1.31m
7:12PM1.33m
7:37AM1.18m
8:23PM1.28m
Low Tide
11:26PM0.22m
11:52AM0.19m
00:24AM0.32m
12:48PM0.30m
1:33AM0.41m
1:52PM0.40m
part cloud
clear
clear
clear
clear
clear
cloud
part cloud
cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
cloud
cloud
cloud
light rain
cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:33
7:33
7:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:49
5:47
5:47
1
Temp °C
17
17
16
19
21
20
19
19
18
17
16
18
20
18
16
15
15
15
15
15
16
16
16
16
16
16
15
19
21
20
19
19
18
16
14
16
18
16
15
14
13
13
13
12
15
16
17
16
Swell 1
Height (m)
Direction
Period (s)
0.5
SW
12
0.4
SW
12
0.5
SSE
12
1.1
SSE
8
1
SSE
8
1
SSE
8
0.9
SSE
8
0.6
S
7
0.6
S
6
0.6
S
6
0.7
SSE
7
0.6
S
7
0.5
S
7
0.5
S
7
0.4
SSE
7
0.4
SW
12
0.5
SW
18
0.5
SW
18
0.5
SW
18
0.6
SSW
16
0.7
SW
16
0.7
SW
7
0.9
SSW
7
0.8
SSW
7
Energy kJ
74
52
77
165
133
116
88
35
29
30
55
38
24
26
17
50
157
155
152
179
264
44
64
58
Swell 2
Height (m)
Direction
Period (s)
0.2
SSE
12
0.4
SSE
12
0.4
SW
12
0.5
SSE
11
0.5
SSE
11
0.5
SSE
11
0.4
SSE
10
0.6
SE
8
0.4
SE
8
0.5
SW
13
0.5
SW
13
0.5
SW
13
0.5
SW
12
0.4
SW
12
0.4
SW
12
0.4
SSE
7
0.4
SW
11
0.4
SSE
11
0.4
SW
11
0.4
SW
11
0.4
SSW
7
0.7
SW
16
0.8
SW
16
0.8
SW
15
Energy kJ
14
51
51
71
69
68
43
41
22
88
87
84
74
52
51
16
46
41
43
42
18
261
291
258
Swell 3
Height (m)
Direction
Period (s)
0.2
SSW
9
0.1
S
17
0.4
SW
12
0.4
SW
12
0.4
SW
12
0.3
SW
11
0.4
SSE
11
0.4
SSE
11
0.4
SE
8
0.2
SSE
11
0.2
SSE
11
0.2
SSE
11
0.3
SW
20
0.4
SW
20
0.4
SW
19
0.4
SSE
7
0.4
SW
11
0.4
S
11
0.3
SW
7
0.4
SW
11
0.4
SW
10
0.2
ESE
8
0.2
ESE
8
Energy kJ
8
5
50
50
35
20
37
40
16
12
12
11
60
97
95
15
43
37
8
42
27
6
6
Wind waves
Height (m)
Direction
Period (s)
1.7
SE
9
1.6
SE
8
1.3
SSE
8
2.3
SE
9
2.2
SE
9
2.1
SE
9
1.8
SE
8
0.2
NNW
2
0.3
NW
2
0.3
WNW
3
0.4
NW
3
0.3
NW
3
0.4
NW
3
0.4
NNW
3
0.5
N
3
0.5
N
3
0.4
NNW
3
0.4
NNW
4
Energy kJ
449
338
208
745
714
625
479
1
1
1
2
1
2
3
4
5
3
5
Nearest Offshore or Glassy
Rating
(10 max)
3
2
2
4
4
3
3
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
Distance (km)
16
16
12
12
10
12
0
0
0
0
0
0
0
12
0
0
0
0
0
0
0
0
0
22
Best forecast wave conditions in Cape Town
Rating
(10 max)
4
4
4
4
4
4
4
2
2
2
2
2
2
2
2
2
2
2
2
3
2
3
3
3
Best forecast wave conditions in South Africa
Rating
(10 max)
4
3
3
4
4
3
4
4
4
4
4
4
4
3
3
3
3
3
3
3
2
3
3
3
Header Global
Rating
(10 max)
5
5
5
5
4
4
5
5
5
5
5
5
5
4
4
4
4
5
7
7
7
7
5
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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