Surf Forecasts:
Black Rocks surf forecast from 4 Aug 2026:
- Best quality surf: Thursday 6 Aug, 2AM (local time) - 10ft (3.0m), 13s period, SW swell with cross-offshore winds.
- Most powerful swell: Friday 7 Aug, 5PM (local time) - 10ft (3.0m), 15s period, SSW swell with 4,089 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 Aug, 2AM (local time) - 10ft (3.0m), 13s period with SW swell.
Best Forecast Surf Conditions for Black Rocks this week:
The surf forecast for Black Rocks over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 06) at 2AM. The primary swell is predicted to be 3.0m and 13s period with a secondary swell of 0.3m and 10s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Black Rocks in the next 16 days are 3.0m 15s and forecast to arrive on Friday (Aug 07) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Wednesday (Aug 05) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 6th Aug) | 10ft (3.0m) 13s |
| Best Surf | 2AM (Thu 6th Aug) | 10ft (3.0m) 13s |
| Most Powerful | 5PM (Fri 7th Aug) | 10ft (3.0m) 15s |
Table - best surf conditions forecast for Black Rocks over the next 16 days.
The Lowdown
Alright, mates, Rusty here. Let’s break it down. We’ve got one main spot to watch: Black Rocks. It’s a reef break, handles swell well, but it’s inconsistent and can get busy. Water temp is about 60°F, which is pretty average for this time of year.
The start is quiet. Tuesday the 4th morning has a clean 4ft swell from the SW with glassy conditions, but it’s small and the spot is inconsistent. The real standout is Saturday the 8th morning. We’ve got a 8ft SW groundswell with a 13-second period, and the wind is offshore from the W at 9 mph. That’s clean, lined-up reef waves – perfect for experienced surfers. The combined energy is strong at 1810, and the conditions are excellent. Expect crowds, though.
After Saturday, it gets ugly. Sunday the 9th is blown out with strong winds and messy 10ft+ surf. The 10th and 11th are poor with onshore junk. The next real opportunity is Thursday the 13th morning. The swell is 8ft from the SW, period at 17 seconds, and it’s glassy – no wind. That’s a very long-period groundswell, pumping out powerful waves (3172 energy). Only for experts.
Friday the 14th and Saturday the 15th offer smaller, clean waves around 5ft to 4ft for a fun session. Sunday the 16th morning has a 6ft WSW swell and clean conditions – a solid finish. Monday the 17th picks up again with a big 12ft WSW swell and strong offshore winds, but it’s borderline too big and hard to paddle into, just for the brave. The last few days are messy with onshore wind.
The clear pick is Saturday the 8th morning, with Thursday the 13th morning as a close second. Both are clean, powerful, and have the right wind. Don’t forget the crowds.
Rusty.
Short Range ForecastModerate rain (total 16mm), heaviest on Wed night. Very mild (max 16°C on Wed afternoon, min 12°C on Wed night). Winds decreasing (strong winds from the NW on Wed afternoon, light winds from the SW by Wed night). | Days 5-7 Weather SummaryHeavy rain (total 27mm), heaviest during Sat night. Very mild (max 14°C on Sat night, min 10°C on Sun afternoon). Winds increasing (light winds from the SW on Sat afternoon, near gales from the SSE by Sun afternoon). | |||||||||||||||||||
Tue 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 11 | SW 15 | SW 16 | SW 15 | SW 13 | SW 13 | SW 12 | SW 13 | SW 14 | SSW 15 | SW 14 | SW 13 | SW 14 | SW 13 | SW 12 | SSW 12 | S 10 | SSE 9 | SSE 9 | SSE 9 |
Wave Graph  | ||||||||||||||||||||
 kJ | 258 | 309 | 1622 | 1808 | 3521 | 2677 | 2294 | 2677 | 3326 | 4089 | 3099 | 1810 | 2344 | 3422 | 2244 | 2538 | 1267 | 1098 | 1084 | 629 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | off | cross-off | cross | cross | cross-on | cross-on | cross-on | on |
High Tide | 6:48PM1.41m | 7:14AM1.19m | 7:38PM1.32m | 8:17AM1.10m | 8:47PM1.24m | 9:49AM1.05m | 10:22PM1.20m | 11:32AM1.09m | 11:55PM1.25m | 12:49PM1.22m | 1:06AM1.35m | 1:46PM1.37m | 2:01AM1.45m | |||||||
Low Tide | 1:09AM0.32m | 1:10PM0.38m | 2:06AM0.39m | 2:12PM0.48m | 3:28AM0.45m | 3:46PM0.54m | 5:10AM0.43m | 5:36PM0.51m | 6:33AM0.34m | 6:57PM0.39m | 7:33AM0.21m | 7:56PM0.25m | ||||||||
 |  | | |  |  |  | | | | | | | |  |  | | | | | |
 | — | — | 7:35 | — | — | 7:35 | — | — | 7:33 | — | — | 7:33 | — | — | 7:31 | — | — | 7:31 | — | — |
 | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:08 | — | — | 6:09 | — | — | 6:10 | — | — | 6:10 | — |
mm | — | — | — | — | 14 | 2 | — | — | — | — | — | — | — | 13 | 6 | 6 | 1 | 1 | — | — |
Temp °C | 15 | 15 | 14 | 16 | 15 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 13 | 14 | 13 | 12 | 12 | 12 | 13 | 12 |
Feels °C | 13 | 13 | 8 | 9 | 9 | 10 | 7 | 5 | 6 | 7 | 6 | 7 | 10 | 11 | 6 | 0 | 0 | 1 | 2 | 1 |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 10 | SW 16 | SW 15 | SW 13 | SW 13 | SW 12 | SW 13 | SW 14 | SSW 15 | SW 14 | SW 13 | SW 14 | SW 13 | SW 12 | — | SW 11 | SW 11 | SW 10 | SW 10 |
| kJ | 258 | 141 | 1622 | 1808 | 3521 | 2677 | 2294 | 2677 | 3326 | 4089 | 3099 | 1810 | 2344 | 3422 | 2244 | — | 589 | 198 | 129 | 49 |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 15 | WSW 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | SW 14 | — | — | — | — | — | — | — | — | SSW 9 | — | — | S 15 |
| kJ | 40 | 309 | 28 | 19 | 19 | 10 | 9 | 529 | — | — | — | — | — | — | — | — | 197 | — | — | 4 |
Swell 3 Height (m) Direction Period (s) | ESE 11 | WSW 10 | ESE 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 15 |
| kJ | 12 | 33 | 39 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 |
Wind waves Height (m) Direction Period (s) | — | — | NNW 4 | NW 6 | NNW 4 | — | — | SE 4 | SE 4 | SSE 4 | — | — | — | — | — | SSW 12 | S 10 | SSE 9 | SSE 9 | SSE 9 |
| kJ | — | — | 31 | 133 | 16 | — | — | 14 | 18 | 34 | — | — | — | — | — | 2538 | 1267 | 1098 | 1084 | 629 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 5 | 0 | 66 | 336 | 168 | 9 | 43 | 32 | 22 | 32 | 5 | 0 | 3 | 182 | 1426 | 1477 | 35 | 35 | 39 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||
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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 16 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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