Black Rocks surf break

Black Rocks surfForecast / Cape Town / South Africa

information circle12 Day Weather and Surf, issued 1 pm Thursday 18 Dec 2025 SAST
Forecast update in hr  min  s Forecast update imminent
Black Rocks surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Black Rocks sea temperature is
18.6° C
(Which is slightly cooler than normal)


Best Forecast Surf Conditions for Black Rocks this week:

The surf forecast for Black Rocks over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Dec 22) at 11AM. The primary swell is predicted to be 0.9m and 11s period with a secondary swell of 1.0m and 7s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Black Rocks in the next 12 days are 2.0m 14s and forecast to arrive on Saturday (Dec 20) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Tuesday (Dec 23) at 8AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Mon 22nd Dec)3ft (0.9m) 11s
Best Surf11AM (Mon 22nd Dec)3ft (0.9m) 11s
Most Powerful 2PM (Sat 20th Dec)6.5ft (2.0m) 14s

Table - best surf conditions forecast for Black Rocks 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 17°C on Thu afternoon). Winds increasing (fresh winds from the SSE on Thu afternoon, near gales from the SE by Sat afternoon).

Days 3-6 Weather Summary Light rain (total 5mm), mostly falling on Tue morning. Warm (max 22°C on Sun afternoon, min 18°C on Wed morning). Winds decreasing (near gales from the SE on Sun afternoon, light winds from the NW by Mon night).

Thu
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
2
2
1
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
1.2
SSE
1.5
SSE
1.4
SSE
1.1
SW
1.9
SSW
1.8
SW
1.9
SW
1.6
SW
1.3
SW
3
SE
1.9
SE
0.9
SW
0.9
SW
0.9
SSE
1.3
S
1.3
SSE
2.2
S
3
SSE
3
SSE
2.2
SSE
1.1
SW
Period(s) (?)10111191213141312871110966888712
Wave
Graph
(?)Metric surfscale
Energy kJ (?)318560444196103910441491864433966371191160132124134638917957467370
Wind
(km/h)
35
SSE
40
SE
35
SSE
40
SSE
45
SE
45
SE
55
SE
55
ESE
30
ESE
55
SE
35
ESE
5
SSW
15
WSW
10
WSW
25
SSW
30
SSE
45
SE
35
SSE
35
SSE
35
SSE
25
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on
cross-
on
crosscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
off
offoffcross-
off
crosscross-
on
cross-
on
cross-
on
cross-
on
cross
High Tide
/ height (m)
2:18PM
1.35
2:50AM
1.32
2:53PM
1.38
3:24AM
1.35
3:28PM
1.39
3:57AM
1.37
4:01PM
1.39
4:31AM
1.39
4:35PM
1.37
5:06AM
1.39
5:10PM
1.34
5:42AM
1.38
5:47PM
1.29
6:21AM
1.37
Low Tide
/ height (m)
8:41PM
0.23
8:52AM
0.34
9:14PM
0.20
9:26AM
0.31
9:46PM
0.18
10:00AM
0.30
10:17PM
0.18
10:34AM
0.31
10:49PM
0.19
11:10AM
0.33
11:22PM
0.21
11:48AM
0.35
11:57PM
0.25
12:32PM
0.38
Thu
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Sunrise--5:28--5:28--5:30--5:30--5:31--5:31--5:31
Sunset7:54--7:55--7:55--7:57--7:57--7:58--7:58--
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
rain showers
part cloud
part cloud
part cloud
cloud
part cloud
clear
Rain (mm)
-------------23------
Temp. °C171717181819202123222222212120202019181818
Feels °C (?)121111121212121319151423192318171414121214
  • 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 Black Rocks Surf forecast

The above surf forecast table for Black Rocks provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Black Rocks can be found by selecting the local surf guide option on the grey menu. Our Black Rocks 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 (Black Rocks) 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 Black Rocks 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.

Are you planning a holiday in Cape Town? If you are looking for accommodation near Black Rocks, camping, hotels and holiday cottages in Cape Town, consider staying in Cape Town which is 40 km (25 miles) away. Other places in and around Cape Town where you can find information about places to rent, and car hire include Bellville which is 46 km (29 miles) away, Stellenbosch, Grabouw and Kayamnandi.

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