Nine Mile Reef surfForecast / Cape Town / South Africa

information circle48hr Weather and Surf, issued 7 pm Sunday 17 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 1AM is: 0.8m 13s primary swell from a Southwest direction and 0.6m 10s secondary swell from a South direction, 0.9m 4s secondary swell from a South-southeast direction (forecast issued at 07:00pm May 17). The wind direction is predicted to be cross-onshore.

Time (SAST) & DateWave HeightWave Period
Morning (18 May)3ft (0.9m)14s
Afternoon (18 May)3.5ft (1.0m)14s
Evening (18 May)3ft (0.9m)13s

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 Wed afternoon. Warm (max 21°C on Tue afternoon, min 15°C on Sun night). Wind will be generally light.

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
1
0
0
0
!
1
2
2
!
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)
0.8
SW
14
0.8
SW
14
0.9
SW
13
0.8
SW
13
0.9
SW
13
0.9
SW
14
1
SW
14
1
SW
14
1
SW
14
0.9
SW
13
1.8
SSE
8
2.1
SSE
8
2.2
SSE
8
2.2
SSE
9
2.2
SSE
9
1.9
SSE
9
1.7
SSE
9
1.6
SSE
9
1.8
SE
9
3
SE
9
1.5
SSE
9
1.3
SSE
9
1.3
SSE
8
2.3
SE
9
Wave Graph
Metric surfscale
Energy kJ
228
218
295
205
299
327
404
398
355
290
424
560
650
714
747
536
419
404
539
1373
395
258
203
828
Wind (km/h)
20
SSE
20
SSE
15
SE
15
SE
15
SE
15
SE
20
SE
20
SE
20
SE
25
ESE
25
ESE
20
ESE
20
SE
20
SE
20
ESE
15
ESE
15
SE
15
ESE
15
ESE
15
ESE
10
ESE
5
E
5
SSE
10
S
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-off
glassy
on
High Tide
3:42PM1.55m
3:55AM1.64m
4:28PM1.53m
4:43AM1.56m
5:17PM1.48m
5:34AM1.44m
Low Tide
9:45PM0.10m
10:16AM0.00m
10:34PM0.15m
11:02AM0.08m
11:26PM0.22m
11:52AM0.19m
clear
clear
part cloud
clear
clear
clear
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
clear
clear
clear
cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:31
7:33
7:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:51
5:50
5:50
5:49
Temp °C
18
17
16
16
15
15
18
20
19
18
17
17
17
17
19
21
21
18
18
17
17
17
19
20
15
15
14
15
13
13
15
17
16
15
14
14
14
14
17
19
19
16
16
16
16
17
19
19
Swell 1
Height (m)
Direction
Period (s)
0.9
S
11
0.8
SW
14
0.9
SW
13
0.8
SW
13
0.9
SW
13
0.9
SW
14
1
SW
14
1
SW
14
1
SW
14
1.2
S
8
0.8
SW
13
0.8
SW
13
0.8
SW
13
0.7
SW
13
0.7
SW
13
0.6
SW
13
0.6
SW
13
0.6
SW
13
0.6
SW
13
1.6
SSE
10
0.5
SW
12
0.5
SSE
11
0.4
SSE
11
1.1
SSE
9
Energy kJ
184
218
295
205
299
327
404
398
355
164
235
228
205
176
171
138
136
104
101
460
72
71
50
186
Swell 2
Height (m)
Direction
Period (s)
0.8
SW
14
0.8
S
10
0.8
S
10
0.6
S
10
0.5
S
10
0.5
S
10
0.4
S
10
0.4
SSE
13
0.8
S
8
0.9
SW
13
0.2
SSE
12
0.2
S
12
0.1
S
16
0.1
S
16
0.2
S
15
0.2
SSE
15
0.2
SSE
14
0.3
SSE
14
0.2
SSW
9
0.6
SW
12
0.2
SSE
12
0.4
SW
12
0.4
SW
12
0.5
SSE
11
Energy kJ
228
138
130
71
49
52
31
55
72
290
15
11
5
5
18
21
19
36
8
95
14
51
50
69
Swell 3
Height (m)
Direction
Period (s)
0.5
S
13
0.5
S
14
0.4
SSE
13
0.4
SSE
13
0.3
SSE
14
0.4
SSE
13
0.3
S
10
0.3
SSE
13
0.4
SSE
12
0.3
SSE
12
0.1
S
17
0.2
SSW
10
0.3
SSW
10
0.3
SSW
9
0.1
S
17
0.1
SW
16
0.4
SW
12
Energy kJ
85
93
58
59
36
55
17
31
48
29
6
10
18
17
5
10
50
Wind waves
Height (m)
Direction
Period (s)
0.9
SSE
4
1
SSE
5
0.9
SSE
5
0.9
SSE
4
0.9
SSE
4
1
SE
5
1
SE
5
1.2
SSE
5
1.3
SE
6
1.3
SE
5
1.8
SSE
8
2.1
SSE
8
2.2
SSE
8
2.2
SSE
9
2.2
SSE
9
1.9
SSE
9
1.7
SSE
9
1.6
SSE
9
1.8
SE
9
3
SE
9
1.5
SSE
9
1.3
SSE
9
1.3
SSE
8
2.3
SE
9
Energy kJ
31
44
33
29
34
43
49
69
97
90
424
560
650
714
747
536
419
404
539
1373
395
258
203
828
Nearest Offshore or Glassy
Rating
(10 max)
2
2
2
2
2
2
4
4
4
3
4
3
2
4
3
3
3
3
3
4
2
2
2
4
Distance (km)
56
22
22
22
22
22
31
31
31
16
31
16
27
30
16
16
16
16
16
16
12
0
0
16
Best forecast wave conditions in Cape Town
Rating
(10 max)
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
3
4
Best forecast wave conditions in South Africa
Rating
(10 max)
3
2
3
3
3
3
4
4
4
4
4
4
4
4
4
3
4
4
4
4
4
4
3
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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