
Surf Forecasts:
Black Rocks surf forecast from 29 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 2PM (local time) - 5ft (1.6m), 13s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 5 Aug, 2PM (local time) - 6.5ft (2.0m), 14s period, SW swell with 1,451 kJ wave energy.
- Next surfable swell (1★+): Wednesday 29 Jul, 2PM (local time) - 5ft (1.6m), 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 Wednesday (Jul 29) at 2PM. The primary swell is predicted to be 1.6m and 13s period with a secondary swell of 0.9m and 7s. Another secondary swell of 1.5m and 7s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Black Rocks in the next 16 days are 2.0m 14s and forecast to arrive on Wednesday (Aug 05) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Wednesday (Aug 05) at 2PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Wed 29th Jul) | 5ft (1.6m) 13s |
| Best Surf | 2PM (Wed 29th Jul) | 5ft (1.6m) 13s |
| Most Powerful | 2PM (Wed 5th Aug) | 6.5ft (2.0m) 14s |
Table - best surf conditions forecast for Black Rocks over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s on the cards for Black Rocks. This is a tricky reef setup that only really works for advanced surfers, and it’s inconsistent, so it needs the stars to line up. The water temperature is sitting at a normal 60° for this time of year, nothing unusual there.
The week starts off pretty grim. Wednesday the 29th has a clean window in the afternoon, with a 5ft SW swell and a 13-second period, but the combined energy is still strong at 1041. The wind swings cross-offshore and light, so the waves will look good, but the morning is a write-off with onshore wind and poor conditions. Thursday and Friday are a total loss – cross-onshore winds and choppy, messy surf. You’d be better off staying on the beach.
Now, Saturday the 1st of August is where it starts to get interesting. The wind goes glassy, absolutely flat calm, and the swell holds at 4ft from the SW with a 13 to 14-second period. The energy drops to a moderate 524, but the clean conditions will make those waves look a million bucks. Sunday and Monday keep the good run going with offshore and glassy winds, holding the swell around 4ft to 4ft. It’s not huge, but it’s clean and rideable – a solid little run for those who know the reef.
But the real standout is Friday the 7th of August. That morning we’ve got an 12ft SW groundswell with a very long 15-second period, and the combined energy is a massive 4881. The wind is a light cross-offshore from the WNW. This is serious, powerful swell, and it’s only for experts. The period is so long it’ll be barrelling and straight at a beach break, but over a reef like Black Rocks, it’s going to be proper. The afternoon before, Thursday the 6th, is also a good lead-in with 8ft SW swell and clean conditions, energy at 2225. That Friday morning is the best of the whole window, no question.
After that, the weekend gets blown out. Saturday the 8th has gale-force winds, and Sunday the 9th is onshore and choppy. There’s a tiny window on Tuesday the 11th with glassy conditions and a small 2ft to 2ft SSW swell, but it’s barely a ripple. The rest of the second week is mostly cross-onshore wind and lumpy, poor surf, with the swell energy dropping off. The 12th has a long-period 6ft SW swell, but the cross-onshore wind ruins it.
So, bottom line: the first few days are a write-off. The best bet is the glassy, clean conditions from Saturday the 1st through Monday the 3rd for some fun, smaller waves. But the absolute standout, the one to circle on the calendar, is Friday the 7th of August – that’s a big, powerful, expert-only day.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Fri afternoon, min 12°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 21°C on Sat afternoon, min 15°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | |||||||||||||||
AM | 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 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 14 | SW 12 | SW 12 | SW 11 | SW 10 | SW 10 | SW 15 |
Wave Graph | |||||||||||||||||||||
769 | 867 | 711 | 623 | 494 | 437 | 281 | 200 | 155 | 447 | 374 | 330 | 363 | 374 | 579 | 537 | 511 | 350 | 261 | 244 | 429 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-off | on | cross-on | cross-on | on | on | cross-on | cross-on | glassy | glassy | glassy | cross-off | off | glassy | glassy | cross-off | glassy | cross-off | off | cross-off |
High Tide | 3:33PM1.43m | 3:38AM1.42m | 4:03PM1.49m | 4:09AM1.43m | 4:33PM1.52m | 4:40AM1.43m | 5:03PM1.53m | 5:13AM1.40m | 5:34PM1.52m | 5:47AM1.35m | 6:08PM1.48m | 6:26AM1.28m | 6:48PM1.41m | ||||||||
Low Tide | 9:22AM0.17m | 9:40PM0.26m | 9:51AM0.13m | 10:11PM0.22m | 10:19AM0.11m | 10:42PM0.20m | 10:47AM0.12m | 11:13PM0.20m | 11:16AM0.15m | 11:47PM0.21m | 11:48AM0.21m | 00:24AM0.25m | 12:25PM0.28m | 1:09AM0.32m | |||||||
7:41 | — | — | 7:41 | — | — | 7:39 | — | — | 7:39 | — | — | 7:39 | — | — | 7:37 | — | — | 7:37 | — | — | |
— | 6:02 | — | — | 6:04 | — | — | 6:04 | — | — | 6:05 | — | — | 6:06 | — | — | 6:06 | — | — | 6:07 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 17 | 17 | 13 | 18 | 16 | 17 | 20 | 20 | 20 | 21 | 20 | 17 | 17 | 16 | 15 | 15 | 15 | 15 | 15 | 15 |
Feels °C | 7 | 15 | 15 | 10 | 13 | 11 | 13 | 16 | 17 | 17 | 18 | 16 | 14 | 14 | 15 | 13 | 13 | 13 | 12 | 12 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 14 | SW 12 | SW 12 | SW 11 | SW 10 | SW 10 | SW 15 |
769 | 867 | 711 | 623 | 494 | 437 | 281 | 200 | 155 | 447 | 374 | 330 | 363 | 374 | 579 | 537 | 511 | 350 | 261 | 244 | 429 | |
Swell 2 Height (m) Direction Period (s) | SE 7 | SE 6 | SE 6 | SE 5 | — | SE 6 | SE 8 | SW 18 | SE 9 | SE 10 | SE 10 | SE 11 | SE 10 | SE 9 | SE 11 | SE 11 | ESE 11 | SE 11 | WSW 11 | SW 16 | SW 10 |
116 | 51 | 46 | 7 | — | 49 | 63 | 48 | 64 | 77 | 50 | 40 | 36 | 12 | 18 | 19 | 12 | 5 | 24 | 129 | 117 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | SW 18 | SW 18 | SW 16 | — | SE 11 | S 9 | S 9 | S 9 | SE 11 | ESE 11 | ESE 11 | ESE 11 | SSW 18 | SE 10 | W 5 |
— | — | — | — | — | — | 13 | 12 | 119 | — | 19 | 15 | 6 | 6 | 5 | 68 | 68 | 65 | 31 | 4 | 28 | |
Wind waves Height (m) Direction Period (s) | ESE 7 | SE 6 | ESE 7 | SE 6 | SE 5 | ESE 6 | ESE 8 | SE 6 | — | — | — | — | — | — | — | — | — | — | NW 3 | NW 3 | NNW 4 |
302 | 123 | 165 | 28 | 60 | 193 | 230 | 30 | — | — | — | — | — | — | — | — | — | — | 2 | 9 | 22 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 5 | 0 | 5 | 9 | 9 | 5 | 5 | 9 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 19 |
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.










