Surf Forecasts:
Off The Wall surf forecast from 11 Sep 2026:
- Best quality surf: Saturday 12 Sep, 8PM (local time) - 8ft (2.5m), 16s period, SW swell with offshore winds.
- Most powerful swell: Tuesday 15 Sep, 11PM (local time) - 10ft (3.0m), 15s period, WSW swell with 4,042 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 11PM (local time) - 7.5ft (2.3m), 7s period with SSE swell.
Best Forecast Surf Conditions for Off The Wall this week:
The surf forecast for Off The Wall over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 11) at 11PM. The primary swell is predicted to be 2.3m and 7s period with a secondary swell of 1.3m and 12s. Another secondary swell of 0.4m and 15s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Off The Wall in the next 16 days are 3.0m 15s and forecast to arrive on Tuesday (Sep 15) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.4m 7s period and expected on Monday (Sep 14) at 2PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Fri 11th Sep) | 7.5ft (2.3m) 7s |
| Best Surf | 8PM (Sat 12th Sep) | 8ft (2.5m) 16s |
| Most Powerful | 11PM (Tue 15th Sep) | 10ft (3.0m) 15s |
Table - best surf conditions forecast for Off The Wall over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming down the line for Off The Wall. This is a solid run of swell for the advanced crew, with a real standout session brewing in the second week.
We kick off Friday morning the 11th with a clean, moderate offshore breeze from the SSE and a solid 6ft SW groundswell, period at 12 seconds. The water is sitting at 57°, which is a bit colder than normal for this time of year, so you’ll want the thicker rubber. The wave energy is strong, pushing 1390. This is prime for experienced surfers. That afternoon, the swell bumps to 8ft but the period drops to a short 7 seconds from the SSE, which gets a bit junky. Saturday the 12th keeps the offshore flow but the morning has that 7ft SW swell with a very long 15-second period (2150 energy). That long period will make it a bit walled at a beach setup, but at a reef like Off The Wall, it’s going to grind nicely. The afternoon gets even bigger with 8ft SW and a 16-second period, pushing energy up to 3651. Clean, powerful, and only for those who know what they’re doing.
Sunday the 13th sees the wind drop to a light breeze in the morning, with 7ft SW at 14 seconds. Clean and strong (2382 energy). The afternoon goes glassy-light with 6ft SW, a real treat. Then we hit a lull. Monday the 14th and Tuesday the 15th are a write-off with strong onshore and cross-onshore winds ruining the shape. Wednesday the 16th brings back the offshore wind, with 8ft WSW groundswell (2783 energy) in the morning, but it’s still a bit raw. Thursday the 17th is moderate.
Now, for the true standouts. Friday the 18th is a cracker. Clear skies, moderate offshore wind, and a big 8ft SW groundswell with a 16-second period. The energy reading is 3528 in the morning, and it holds all day. This is big, powerful, and clean – expert territory only. Then, Saturday the 19th. The morning is clean with light winds and a 4ft SW groundswell that has a very long 19-second period (2267 energy). But the afternoon is the real gem: a massive 10ft SW groundswell, 18-second period, and the energy reading is a whopping 5406. That is proper, world-class power. The wind is just a gentle cross-offshore breeze. This is the pick of the whole forecast. Sunday the 20th is nearly as good with glassy conditions in the morning on 8ft SW. The following week tapers off, with smaller but still clean waves through Monday the 21st, before wind and rain mess things up again around the 25th and 26th.
Rusty, signing off.
Short Range ForecastLight rain (total 6mm), mostly falling on Sun night. Warm (max 22°C on Sun afternoon, min 14°C on Fri morning). Winds decreasing (fresh winds from the SSE on Fri afternoon, calm by Sun night). | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Tue night. Very mild (max 16°C on Mon morning, min 11°C on Wed night). Winds decreasing (fresh winds from the NNW on Mon afternoon, light winds from the SSE by Tue night). | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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) | WSW 12 | WSW 12 | SSE 7 | SW 15 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 12 | SW 12 | SW 11 | SW 18 | SW 16 | WSW 14 | WSW 14 | SW 13 | SW 12 | SW 12 | SW 12 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 967 | 758 | 489 | 1647 | 3233 | 2482 | 1550 | 1029 | 663 | 380 | 349 | 245 | 266 | 1571 | 3714 | 2109 | 1144 | 613 | 435 | 352 | 1962 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | off | off | off | cross-off | cross-on | cross-on | cross-on | on | on | on | cross-off | off | off | off | off | off | off |
High Tide | 3:33PM1.89m | 3:51AM1.77m | 4:05PM1.88m | 4:23AM1.74m | 4:37PM1.83m | 4:54AM1.67m | 5:08PM1.74m | 5:25AM1.58m | 5:38PM1.62m | 5:57AM1.48m | 6:09PM1.50m | 6:32AM1.36m | 6:43PM1.36m | ||||||||
Low Tide | 9:22AM0.26m | 9:48PM0.24m | 9:53AM0.27m | 10:19PM0.26m | 10:23AM0.31m | 10:48PM0.33m | 10:52AM0.38m | 11:17PM0.41m | 11:21AM0.48m | 11:46PM0.52m | 11:50AM0.60m | 00:18AM0.63m | 12:24PM0.73m | 00:57AM0.74m | |||||||
 |  |  | | |  | |  |  | | |  | | |  | |  |  | | | | |
 | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — |
 | — | 6:34 | — | — | 6:35 | — | — | 6:36 | — | — | 6:36 | — | — | 6:37 | — | — | 6:37 | — | — | 6:37 | — |
mm | — | — | — | — | — | — | — | 1 | 5 | — | — | 2 | — | — | 6 | — | — | — | — | — | — |
Temp °C | 16 | 17 | 15 | 17 | 17 | 16 | 19 | 22 | 18 | 16 | 15 | 15 | 16 | 15 | 14 | 14 | 15 | 14 | 14 | 17 | 14 |
Feels °C | 13 | 13 | 11 | 13 | 12 | 13 | 19 | 21 | 19 | 10 | 9 | 11 | 11 | 9 | 10 | 7 | 9 | 10 | 10 | 12 | 8 |
Swell 1 Height (m) Direction Period (s) | WSW 12 | WSW 12 | WSW 11 | SW 15 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 12 | SW 12 | SW 11 | WSW 7 | SW 16 | WSW 14 | WSW 14 | SW 13 | SW 12 | SW 12 | SW 12 | SW 14 |
| kJ | 967 | 710 | 393 | 1647 | 3233 | 2482 | 1550 | 1029 | 663 | 380 | 349 | 245 | 127 | 1571 | 3714 | 2109 | 1144 | 613 | 435 | 338 | 1962 |
Swell 2 Height (m) Direction Period (s) | — | — | SW 14 | — | — | — | SSE 8 | SSE 8 | SSE 8 | SSE 8 | SE 13 | SW 18 | SW 11 | W 8 | NNW 6 | SW 13 | W 13 | WSW 12 | W 12 | WSW 12 | SW 20 |
| kJ | — | — | 248 | — | — | — | 207 | 217 | 66 | 7 | 7 | 12 | 177 | 324 | 15 | 562 | 799 | 454 | 289 | 183 | 97 |
Swell 3 Height (m) Direction Period (s) | — | — | SSW 10 | — | — | — | — | SSE 12 | — | SE 13 | ESE 13 | SE 13 | SW 18 | — | — | — | — | — | — | SW 15 | W 11 |
| kJ | — | — | 33 | — | — | — | — | 29 | — | 6 | 16 | 7 | 266 | — | — | — | — | — | — | 266 | 21 |
Wind waves Height (m) Direction Period (s) | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SE 8 | SE 9 | NNW 4 | NNW 7 | NW 7 | NW 8 | NW 7 | NNW 7 | — | S 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 |
| kJ | 423 | 758 | 489 | 503 | 418 | 256 | 625 | 846 | 52 | 412 | 489 | 205 | 195 | 93 | — | 112 | 126 | 169 | 179 | 352 | 202 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 406 | 0 | 14 | 9 | 0 | 0 | 0 | 25 | 234 | 191 | 15 | 234 | 345 | 0 | 52 | 52 | 0 | 0 | 406 | 11 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
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Information about the Off The Wall Surf forecast
The above surf forecast table for Off The Wall provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Off The Wall can be found by selecting the local surf guide option on the grey menu. Our Off The Wall 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 (Off The Wall) 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 Off The Wall 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 Off The Wall, camping, hotels and holiday cottages in Cape Town, consider staying in Cape Town which is 8 km (5 miles) away. Other places in and around Cape Town where you can find information about places to rent, and car hire include Robben Island which is 12 km (7 miles) away, Bellville, Atlantis and Kayamnandi.
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