Nine Mile Reef surfForecast / Cape Town / South Africa

information circle12 Day Weather and Surf, issued 7 am Saturday 06 Dec 2025 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
17.4° C
(Which is 1.4°C colder than average 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 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Dec 11) at 8AM. The primary swell is predicted to be 0.9m and 9s period with a secondary swell of 0.1m and 15s. Another secondary swell of 0.9m and 6s is also forecast. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Nine Mile Reef in the next 12 days are 2.1m 14s and forecast to arrive on Saturday (Dec 13) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Friday (Dec 12) at 5PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Thu 11th Dec)3ft (0.9m) 9s
Best Surf11AM (Sat 13th Dec)7ft (2.1m) 14s
Most Powerful11AM (Sat 13th Dec)7ft (2.1m) 14s

Table - best surf conditions forecast for Nine Mile Reef over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 23°C on Sun morning, min 14°C on Sat night). Winds decreasing (strong winds from the S on Sat afternoon, light winds from the SSE by Mon night).

Days 3-6 Weather Summary Mostly dry. Warm (max 27°C on Thu afternoon, min 16°C on Wed night). Winds decreasing (fresh winds from the S on Tue afternoon, calm by Thu night).

Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
1
Swell
Height Map
Wave Height (m) & direction (?)
0.7
SW
1.6
SSE
1.2
SW
1.4
SW
1.4
SW
1.1
SW
1.2
SSW
1.4
SSW
1.4
SW
1.4
SW
1.4
SSW
1.3
SSW
0.8
SW
2.1
SSE
0.9
SSW
0.9
SSW
0.9
SSW
0.8
SSW
0.4
SW
0.8
SW
1.1
SW
Period(s) (?)851312121212121111111010610999181615
Wave
Graph
(?)Metric surfscale
Energy kJ (?)66123471607531361378527471431433333136333168136133110113371550
Wind
(km/h)
30
SSE
35
S
20
SE
20
S
30
S
15
SSE
25
SSW
25
S
10
SSE
25
S
35
S
20
SE
15
S
30
SSE
15
ESE
10
SW
15
S
5
S
35
NW
35
NW
15
W
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
ononcross-
on
ononcross-
on
ononcross-
on
ononcross-
on
ononcross-
on
cross-
on
onglasscross-
off
cross-
off
cross
High Tide
/ height (m)
4:07PM
1.59
4:40AM
1.53
4:55PM
1.50
5:28AM
1.48
5:44PM
1.38
6:19AM
1.41
6:36PM
1.25
7:14AM
1.34
7:35PM
1.13
8:15AM
1.27
8:45PM
1.05
9:21AM
1.22
10:04PM
1.02
Low Tide
/ height (m)
10:00AM
0.12
10:27PM
0.03
10:50AM
0.17
11:12PM
0.11
11:41AM
0.25
11:59PM
0.21
12:37PM
0.34
12:48AM
0.32
1:39PM
0.43
1:43AM
0.43
2:49PM
0.49
2:47AM
0.51
4:06PM
0.51
4:00AM
0.56
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Wednesday
10
Thursday
11
Friday
12
Sunrise5:26--5:26--5:26--5:26--5:26--5:26--5:26--
Sunset-7:45--7:45--7:46--7:47--7:49--7:49--7:50-
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
rain showers
Rain (mm)
--------------------4
Temp. °C222119232219212119212119242623262719232219
Feels °C (?)171314201715171717201716212121252619171616
  • Map Icons:
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  • 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 12 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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