Nine Mile Reef surfForecast / Cape Town / South Africa

information circle12 Day Weather and Surf, issued 7 pm Friday 12 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
17.9° C
(Which is 1.1°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 Saturday (Dec 13) at 5AM. The primary swell is predicted to be 2.5m and 14s period with a secondary swell of 0.2m and 12s. The wind is predicted to be cross-onshore as the swell arrives.

The most powerful waves expected at Nine Mile Reef in the next 12 days are 4.5m 14s and forecast to arrive on Saturday (Dec 13) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 5s period and expected on Tuesday (Dec 16) at 5PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sat 13th Dec)8ft (2.5m) 14s
Best Surf 5AM (Sat 13th Dec)8ft (2.5m) 14s
Most Powerful 2AM (Sat 13th Dec)15ft (4.5m) 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 Light rain (total 3mm), mostly falling on Fri night. Warm (max 22°C on Mon afternoon, min 15°C on Sat night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Tue night. Warm (max 22°C on Tue morning, min 15°C on Wed night). Winds increasing (calm on Mon night, fresh winds from the SSE by Thu afternoon).

Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Fri
19
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
!
!
3
0
0
1
1
0
3
1
1
!
!
0
2
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
4.5
SW
2.4
SW
2.2
SW
1.9
SW
1.7
SSW
1.5
SSW
1.8
SSW
1.9
SSW
1.8
SW
1.6
SW
1.3
SW
1.3
SW
4
WSW
2.3
SW
1.8
SSW
2
S
2.3
S
2.4
S
1.9
S
2.1
SSE
2.2
SSE
Period(s) (?)141313121212121212121212121212121213121211
Wave
Graph
(?)Metric surfscale
Energy kJ (?)7622200216091137769625874102294881152045541091500907113616331872108011411162
Wind
(km/h)
20
SW
15
SW
20
SSW
10
SE
15
SSW
20
S
10
SSE
15
SSW
20
S
5
SSE
30
NW
35
NW
15
NW
20
WSW
25
SSW
15
SSE
30
SSE
35
SSE
25
SE
25
SE
40
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
cross-
on
cross-
on
onononononglasscross-
off
cross-
off
cross-
off
cross-
on
oncross-
on
oncross-
on
cross-
on
cross-
on
cross-
on
High Tide
/ height (m)
10:04PM
1.02
10:28AM
1.21
11:18PM
1.04
11:28AM
1.22
12:16AM
1.09
12:18PM
1.24
1:01AM
1.16
1:02PM
1.28
1:40AM
1.22
1:41PM
1.32
2:15AM
1.28
2:18PM
1.36
2:50AM
1.33
2:53PM
1.39
Low Tide
/ height (m)
4:00AM
0.56
5:15PM
0.48
5:12AM
0.56
6:10PM
0.44
6:11AM
0.54
6:54PM
0.38
6:59AM
0.49
7:32PM
0.33
7:40AM
0.44
8:07PM
0.28
8:17AM
0.38
8:41PM
0.23
8:52AM
0.34
Saturday
13
Sunday
14
Monday
15
Tuesday
16
Wednesday
17
Thursday
18
Fri
19
Sunrise-5:26--5:26--5:26--5:28--5:28--5:28--5:28-
Sunset--7:51--7:51--7:52--7:52--7:52--7:53--7:53
rain showers
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
cloud
cloud
part cloud
clear
clear
clear
part cloud
clear
Rain (mm)
3-----------2--------
Temp. °C181718171919182122192222191818171718172123
Feels °C (?)151314141615161920171716151513121110101616
  • 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 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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