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Black Rocks Surf Forecast
/ Cape Town (69 surf breaks) /
Black Rocks surfForecast / Cape Town / South Africa
12 Day Weather and Surf, issued 1 am Tuesday 20 May 2025 SAST
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 Type | Time (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 Powerful | 11AM (Thu 22nd May) | 11ft (3.5m) 14s |
Table - best surf conditions forecast for Black Rocks over the next 12 days.
Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | Sunday 25 | Monday 26 | Tuesday 27 | Wednesday 28 | Thursday 29 | Friday 30 | Saturday 31 | |||||||||||||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | ||||||||||||||||||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  |  |  |  |  |  | ||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||||||||||||||
| Period(s) (?) | 15 | 10 | 12 | 12 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 12 | 12 | 12 | 15 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 10 | 12 | 8 | 12 | 12 | 14 | 13 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||||||||||||||
| Energy (?) | 220 | 1448 | 4443 | 2739 | 2660 | 4339 | 4887 | 4443 | 3167 | 2357 | 1520 | 1118 | 893 | 718 | 1432 | 1484 | 1251 | 1021 | 991 | 892 | 656 | 503 | 433 | 669 | 527 | 518 | 533 | 610 | 436 | 618 | 341 | 307 | 314 | 690 | 640 | 341 |
Wind (km/h) | ||||||||||||||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross | cross- off | cross- off | cross | cross- on | cross- on | cross- on | on | on | cross- on | cross | cross- off | off | cross- on | cross- on | cross- on | on | cross- on | cross- off | cross- off | cross- off | off | off | cross- off | cross- on | cross- on | cross- on | cross- on | on | on | on | cross- 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 | |||||||||||||||||||||||||
| Sunrise | 7:35 | - | - | 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 | - |
 |  |  |  |  |  |  | |  | | | | | | | | | | | | | | | | | | | | | | | | | | |  | |
Rain (mm) | 4 | 7 | 7 | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 3 | 9 | 1 | - | - | - | - | - | - | - | - | 2 |
| Temp. °C | 15 | 14 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 14 | 20 | 19 | 24 | 24 | 25 | 22 | 22 | 18 | 16 | 16 | 16 | 17 | 20 | 17 | 16 | 16 | 16 | 14 | 14 | 14 | 12 | 15 | 13 | 14 | 21 | 21 |
| Feels °C (?) | 7 | 4 | 8 | 11 | 11 | 10 | 14 | 15 | 14 | 9 | 14 | 14 | 20 | 21 | 22 | 19 | 18 | 17 | 14 | 13 | 10 | 14 | 18 | 14 | 11 | 8 | 8 | 6 | 7 | 4 | 0 | 5 | 3 | 9 | 17 | 17 |
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). | |||||||||||||||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Black Rocks surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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