Nine Mile Reef surfForecast / Cape Town / South Africa

information circle16 Day Weather and Surf, issued 1 pm Tuesday 12 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
17.1° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Nine Mile Reef this week:

The surf forecast for Nine Mile Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (May 12) at 8PM. The primary swell is predicted to be 2.5m and 12s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Nine Mile Reef in the next 16 days are 4.5m 12s and forecast to arrive on Wednesday (May 13) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 12s period and expected on Tuesday (May 12) at 8PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Tue 12th May)8ft (2.5m) 12s
Best Surf 8PM (Tue 12th May)8ft (2.5m) 12s
Most Powerful 8AM (Wed 13th May)15ft (4.5m) 12s

Table - best surf conditions forecast for Nine Mile Reef over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 3mm), mostly falling on Tue afternoon. Very mild (max 18°C on Tue afternoon, min 13°C on Wed night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 20°C on Sat afternoon, min 13°C on Sat morning). Wind will be generally light.

Tue
12
Wednesday
13
Thursday
14
Friday
15
Saturday
16
Sunday
17
Monday
18
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
!
!
!
!
!
4
3
4
!
0
2
2
2
1
0
0
0
0
0
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.5
SW
12
2.5
SSW
12
3
SSW
12
3
SSW
12
2.3
SSW
12
2
SSW
11
1.7
SSW
11
1.5
SSW
11
2.3
S
14
2.4
S
13
1.9
S
13
1.7
SSE
12
1.6
SSE
12
1
S
11
0.8
S
11
0.8
SW
14
0.9
SW
13
0.9
SW
14
0.8
SW
14
0.8
SW
13
1.4
SSE
8
Wave Graph
Metric surfscale
Energy kJ
1890
1722
2180
2208
1377
1027
711
489
2094
2042
1215
905
669
255
149
245
299
331
281
215
219
Wind (km/h)
20
WNW
20
W
15
WSW
10
WSW
0
NE
0
SSW
5
SSW
0
SSE
15
SSE
20
SSE
15
SE
10
SE
15
SSE
10
SE
15
S
20
SSE
20
SE
15
SE
20
SE
10
ESE
5
SE
cross-off
cross
cross
cross
glassy
glassy
glassy
glassy
on
on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
cross
glassy
High Tide
00:11AM1.40m
12:45PM1.30m
00:56AM1.52m
1:30PM1.41m
1:40AM1.61m
2:14PM1.49m
2:24AM1.67m
2:57PM1.54m
3:09AM1.68m
3:42PM1.55m
3:55AM1.64m
4:28PM1.53m
4:43AM1.56m
Low Tide
5:54PM0.40m
6:39AM0.25m
6:43PM0.31m
7:22AM0.12m
7:29PM0.22m
8:04AM0.02m
8:13PM0.15m
8:47AM-0.03m
8:59PM0.11m
9:31AM-0.04m
9:45PM0.10m
10:16AM0.00m
10:34PM0.15m
11:02AM0.08m
rain showers
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:28
7:28
7:30
7:31
7:31
7:31
7:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:53
5:53
5:52
5:52
5:52
5:51
5:50
5:50
3
Temp °C
18
16
16
16
15
15
16
16
17
18
16
16
20
18
17
20
17
18
21
17
18
14
14
13
13
13
14
15
16
16
15
13
14
18
17
15
18
15
16
18
15
18
Swell 1
Height (m)
Direction
Period (s)
2.5
SW
12
2.5
SSW
12
3
SSW
12
3
SSW
12
2.3
SSW
12
2
SSW
11
1.7
SSW
11
1.5
SSW
11
2.3
S
14
2.4
S
13
1.9
S
13
1.7
SSE
12
1.6
SSE
12
1
S
11
0.8
S
11
0.8
SW
14
0.9
SW
13
0.9
SW
14
0.8
SW
14
0.8
SW
13
0.6
SW
13
Energy kJ
1890
1722
2180
2208
1377
1027
711
489
2094
2042
1215
905
669
255
149
245
299
331
281
215
142
Swell 2
Height (m)
Direction
Period (s)
1.9
W
12
2.2
WSW
12
0.6
S
14
0.1
SW
18
0.2
WSW
18
1.1
S
14
0.6
SW
15
0.6
SW
16
1.2
SW
14
1.1
SW
13
0.9
SW
12
0.6
SW
13
0.5
SW
12
0.7
S
11
0.5
S
10
0.4
S
10
0.3
SSE
12
0.2
SSE
11
0.1
S
11
Energy kJ
988
1272
148
13
31
478
191
193
565
374
256
138
72
110
50
30
28
12
2
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
11
0.1
W
20
0.2
WSW
18
0.4
SW
18
0.4
SW
16
1
WSW
15
1.3
WSW
15
0.4
SW
15
0.3
SSE
13
0.3
SSE
12
0.2
S
10
0.2
S
9
0.1
S
11
Energy kJ
5
8
31
81
94
480
721
76
34
29
8
7
2
Wind waves
Height (m)
Direction
Period (s)
0.9
W
4
0.9
W
4
0.7
ESE
4
1.8
ESE
5
1.9
SE
6
0.9
SE
7
0.8
SSE
7
1.2
SSE
5
1
SSE
5
1.2
SSE
5
1.4
SE
6
1.3
SE
6
1.4
SSE
8
Energy kJ
33
32
13
183
266
67
57
77
50
78
137
128
219
Nearest Offshore or Glassy
Rating
(10 max)
4
5
4
4
4
4
3
4
4
5
4
4
4
2
2
3
2
2
2
2
2
Distance (km)
10
165
165
18
12
0
0
0
16
29
16
16
16
12
16
30
22
26
16
12
0
Best forecast wave conditions in Cape Town
Rating
(10 max)
4
5
4
4
4
4
4
5
5
4
4
4
4
4
4
4
4
4
4
Best forecast wave conditions in South Africa
Rating
(10 max)
9
5
5
5
9
4
4
4
4
5
4
4
4
4
4
4
3
4
3
4
3
Header Global
Rating
(10 max)
9
9
6
8
9
5
5
5
5
5
5
4
6
5
5
4
4
7
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)
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Information about the Nine Mile Reef Surf forecast

The above surf forecast table for Nine Mile Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Nine Mile Reef can be found by selecting the local surf guide option on the grey menu. Our Nine Mile Reef surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Nine Mile Reef) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Nine Mile Reef may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Nine Mile Reef is 19 km (12 miles) from the very large city of Bellville. If you plan a holiday in Cape Town, look for hotels and other accommodation in Bellville. Bellville has rooms for a wide range of budgets as well as cheap car hire and transport links.

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