Surf Forecast Surf Report
Black Rocks surf break

Black Rocks surfForecast / Cape Town / South Africa

information circle12 Day Weather and Surf, issued 1 am Tuesday 20 May 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
17.6° C
(Which is normal for this time of year)


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 Tuesday (May 20) at 8PM. The primary swell is predicted to be 3.5m and 10s period with a secondary swell of 0.2m and 12s. Another secondary swell of 0.3m and 12s is also forecast. 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 3.5m 14s and forecast to arrive on Thursday (May 22) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 9s period and expected on Tuesday (May 20) at 11AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Tue 20th May)11ft (3.5m) 10s
Best Surf 2AM (Thu 22nd May)11ft (3.5m) 14s
Most Powerful11AM (Thu 22nd May)11ft (3.5m) 14s

Table - best surf conditions forecast for Black Rocks over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
Wednesday
28
Thursday
29
Friday
30
Saturday
31
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.7
SW
3
SW
4
SW
3
SW
3
SW
3.5
SW
3.5
SSW
3.5
SSW
3
SSW
2.5
SSW
2.1
SSW
1.9
SW
1.7
SSW
1.6
SW
1.8
SW
1.9
SW
1.8
SW
1.7
SW
1.7
SW
1.6
SW
1.5
SW
1.3
SW
1.3
SW
1.5
SSW
1.4
SSW
1.4
SSW
1.5
SSW
1.7
SSW
1.5
SSW
1.4
SSW
1.7
SSE
1
SW
1
SSW
1.4
SSW
1.4
SSW
0.9
SW
Period(s) (?)15101212131414141414131212121514141313131212121212121111101281212141314
Wave
Graph
(?)Metric surfscale
Energy (?)220144844432739266043394887444331672357152011188937181432148412511021991892656503433669527518533610436618341307314690640341
Wind
(km/h)
35
NNW
50
SSW
40
SW
20
NW
25
N
20
NNW
10
NW
10
S
25
SE
30
SE
35
SE
15
ESE
10
ENE
10
SE
10
N
10
NNW
15
WNW
15
SSE
20
SSE
25
SSE
20
ESE
15
NE
20
NW
20
NW
30
NW
40
W
40
WSW
30
SSW
35
SE
50
ESE
55
ESE
50
ESE
35
E
20
ESE
15
ESE
15
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
cross-
off
crosscross-
off
cross-
off
crosscross-
on
cross-
on
cross-
on
ononcross-
on
crosscross-
off
offcross-
on
cross-
on
cross-
on
oncross-
on
cross-
off
cross-
off
cross-
off
offoffcross-
off
cross-
on
cross-
on
cross-
on
cross-
on
onononcross-
off
High Tide
/ height (m)
8:41AM
1.08
9:32PM
1.22
10:07AM
1.11
10:40PM
1.31
11:19AM
1.18
11:39PM
1.41
12:19PM
1.28
12:32AM
1.52
1:11PM
1.38
1:22AM
1.60
1:59PM
1.46
2:09AM
1.64
2:45PM
1.51
2:56AM
1.64
3:30PM
1.52
3:43AM
1.60
4:16PM
1.50
4:30AM
1.51
5:03PM
1.45
5:18AM
1.41
5:52PM
1.38
6:09AM
1.28
6:46PM
1.31
Low Tide
/ height (m)
2:54PM
0.46
4:01AM
0.48
4:11PM
0.44
5:13AM
0.36
5:18PM
0.38
6:11AM
0.23
6:17PM
0.30
7:02AM
0.11
7:09PM
0.22
7:49AM
0.02
7:59PM
0.16
8:35AM
-0.02
8:47PM
0.12
9:20AM
-0.02
9:35PM
0.12
10:04AM
0.02
10:23PM
0.16
10:50AM
0.09
11:13PM
0.23
11:36AM
0.19
12:06AM
0.32
12:24PM
0.29
1:04AM
0.41
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Saturday
24
Sunday
25
Monday
26
Tuesday
27
Wednesday
28
Thursday
29
Friday
30
Saturday
31
Sunrise7:35--7:35--7:35--7:37--7:37--7:37--7:39--7:39--7:39--7:41--7:41--7:41--
Sunset-5:49--5:49--5:47--5:47--5:46--5:46--5:45--5:45--5:45--5:45--5:45--5:44-
light rainmod rainrain showerspart cloudrain showerspart cloudclearclearclearclearclearclearclearclearclearclearclearclearpart cloudclearclearclearclearpart cloudlight rainmod rainrain showerspart cloudpart cloudclearclearclearpart cloudpart cloudpart cloudlight rain
Rain (mm)
477-1-------------------391--------2
Temp. °C151415151515161616142019242425222218161616172017161616141414121513142121
Feels °C (?)74811111014151491414202122191817141310141814118867405391717

Short Range Forecast: Moderate rain (total 19mm), heaviest on Tue morning. Very mild (max 16°C on Thu morning, min 13°C on Tue afternoon). Winds decreasing (near gales from the SSW on Tue afternoon, light winds from the NW by Thu morning).

Days 3-6 Weather Summary Mostly dry. Warm (max 25°C on Sat night, min 13°C on Fri morning). Winds decreasing (fresh winds from the SE on Fri afternoon, calm by Sat afternoon).

Days 6-9 Weather Summary Moderate rain (total 13mm), heaviest on Wed afternoon. Warm (max 20°C on Tue afternoon, min 14°C on Wed afternoon). Winds increasing (light winds from the WNW on Tue afternoon, strong winds from the W by Wed afternoon).

Long Range Forecast: Light rain (total 3mm), mostly falling on Sat night. Warm (max 21°C on Sat afternoon, min 12°C on Thu night). Winds decreasing (near gales from the ESE on Fri morning, light winds from the NE by Sun morning).

  • 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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