
Surf Forecasts:
Rocklands surf forecast from 15 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 2AM (local time) - 10ft (3.0m), 14s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 2AM (local time) - 10ft (3.0m), 14s period, SW swell with 3,383 kJ wave energy.
- Next surfable swell (1★+): Wednesday 16 Sep, 2AM (local time) - 10ft (3.0m), 14s period with SW swell.
Best Forecast Surf Conditions for Rocklands this week:
The surf forecast for Rocklands over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 16) at 2AM. The primary swell is predicted to be 3.0m and 14s period with a secondary swell of 1.3m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Rocklands in the next 16 days are 3.0m 14s and forecast to arrive on Wednesday (Sep 16) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Saturday (Sep 19) at 11AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 16th Sep) | 10ft (3.0m) 14s |
| Best Surf | 2AM (Wed 16th Sep) | 10ft (3.0m) 14s |
| Most Powerful | 2AM (Wed 16th Sep) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Rocklands over the next 16 days.
The Lowdown
Alright, Rusty here. Let's get into it.
Alright, the next couple of weeks are gonna be a bit of a mixed bag here at Rocklands. The southeast wind is going to be a constant factor for a lot of the period, but we get some real gems in the second half that are worth circling on the calendar.
Wednesday, the 16th, kicks off with a solid 8ft SW groundswell. That's a powerful swell, with a whopping 4019 units of energy in the water. The wind is blowing a fresh 21 mph offshore from the SSE, so the faces will be clean as a whistle. But that's serious power for the advanced crew only; anything over 8ft and the lineup is exclusive. Thursday holds more of the same with a 7ft SW swell, but that offshore wind is up to a strong 25 mph, making it hard as anything to get into. The conditions are clean but the paddle-out will be a fight. It’s not exactly beginner territory, but for the experts, the energy is there.
Friday the 18th sees the swell dropping a little to 5ft, with a moderate 16 mph offshore wind from the SE. The energy drops back to 786 units, but this is more manageable. Still a clean, offshore setup for skilled surfers. Saturday and Sunday, the 19th and 20th, are similar with 5-6ft SW swells and fresh to moderate offshore winds, keeping it rippable but with that same strong wind caveat. The energy bounces around between 756 and 1445, so it's never flat, just windy.
Now, Monday the 21st is where things get interesting. The swell is a cleaner 5ft from the WSW, but the wind drops right off to just a 3 mph offshore breeze. The energy is down to 545, but that slight air is going to make for some silky, glassy conditions. This is the best call in this first week for a surfer who wants clean lines without a battle. The water is sitting about average for the time of year, so no surprises there.
Then we hit a bit of a flat spot. Tuesday the 22nd through most of the 23rd, the swell drops below 3ft and the wind turns onshore or goes light. The energy plummets to 263-394 units. Not worth paddling out for.
But don't write the trip off. Thursday the 24th is a serious standout. The swell jumps back up to 8ft from the SSW, a proper long-period groundswell (13 seconds). The wind is a gentle 9 mph offshore, and the energy is a massive 2457 units. This is excellent, proper swell. That size makes it expert territory again, but for those who can handle it, this is the real deal. Friday the 25th keeps that quality with a 6ft swell and light winds.
The second week has another highlight. On Sunday the 27th, we get a 5ft WSW swell with a 9 mph offshore breeze from the SE and an energy of 1435. That’s clean and fun for any competent surfer. The 28th is smaller but clean enough for a log.
There’s a big gap from the 29th of September to the end of the month with nothing but small, onshore junk. The waves fade to under 3ft with poor wind. It gets glassy on the 1st of October, but the swell is only 2ft, so it’s a millpond. Not worth the drive.
If you're an expert, Thursday the 24th is the one. For a more relaxed, clean session, Monday the 21st is your winner.
Rusty.
Short Range ForecastHeavy rain (total 23mm), heaviest during Tue night. Very mild (max 18°C on Fri afternoon, min 12°C on Tue night). Winds increasing (light winds from the SSW on Tue night, strong winds from the SSE by Thu afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Mon afternoon, min 14°C on Fri night). Winds decreasing (strong winds from the SE on Sat afternoon, light winds from the SE by Mon morning). | ||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 13 | SW 12 | SW 12 | SW 14 | SW 14 | SW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | SW 11 |
Wave Graph | |||||||||||||||||||
3383 | 2494 | 999 | 1446 | 1180 | 945 | 726 | 640 | 946 | 811 | 505 | 799 | 1639 | 1288 | 983 | 636 | 545 | 456 | 293 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | cross-off |
High Tide | 5:57AM1.48m | 6:09PM1.50m | 6:32AM1.36m | 6:43PM1.36m | 7:19AM1.25m | 7:33PM1.24m | 8:50AM1.17m | 9:28PM1.15m | 11:21AM1.20m | 11:45PM1.20m | 12:29PM1.32m | 00:43AM1.31m | |||||||
Low Tide | 11:46PM0.52m | 11:50AM0.60m | 00:18AM0.63m | 12:24PM0.73m | 00:57AM0.74m | 1:11PM0.85m | 2:06AM0.84m | 3:12PM0.95m | 4:29AM0.87m | 5:44PM0.89m | 6:01AM0.79m | 6:43PM0.77m | |||||||
— | 6:45 | — | — | 6:43 | — | — | 6:41 | — | — | 6:41 | — | — | 6:39 | — | — | 6:37 | — | — | |
6:37 | — | 6:37 | — | — | 6:37 | — | — | 6:38 | — | — | 6:39 | — | — | 6:40 | — | — | 6:40 | — | |
mm | 23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 14 | 14 | 15 | 16 | 14 | 15 | 18 | 15 | 17 | 19 | 17 | 18 | 18 | 17 | 20 | 24 | 22 |
Feels °C | 9 | 7 | 5 | 6 | 6 | 7 | 6 | 9 | 10 | 8 | 11 | 11 | 11 | 13 | 14 | 15 | 20 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 13 | SW 12 | SW 12 | SW 14 | SW 14 | SW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | SW 11 |
3383 | 2494 | 999 | 1446 | 1180 | 945 | 726 | 640 | 946 | 811 | 505 | 799 | 1639 | 1288 | 983 | 636 | 545 | 456 | 293 | |
Swell 2 Height (m) Direction Period (s) | WNW 7 | SW 14 | W 13 | W 13 | — | — | — | W 20 | SW 18 | SW 16 | SW 14 | SW 18 | — | — | — | — | — | SW 15 | SSE 6 |
168 | 849 | 878 | 324 | — | — | — | 7 | 12 | 127 | 251 | 82 | — | — | — | — | — | 9 | 27 | |
Swell 3 Height (m) Direction Period (s) | NNW 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 14 |
57 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 48 | |
Wind waves Height (m) Direction Period (s) | — | SSW 9 | SSE 5 | SSE 7 | SSE 7 | SSE 6 | SSE 6 | SE 6 | SSE 6 | SE 6 | SSE 6 | SSE 7 | SSE 6 | SE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SE 6 |
— | 676 | 143 | 417 | 311 | 319 | 202 | 139 | 369 | 152 | 196 | 445 | 322 | 157 | 254 | 145 | 72 | 61 | 74 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 345 | 176 | 52 | 406 | 921 | 15 | 0 | 1988 | 15 | 15 | 176 | 15 | 15 | 406 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||
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Information about the Rocklands Surf forecast
The above surf forecast table for Rocklands provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Rocklands can be found by selecting the local surf guide option on the grey menu. Our Rocklands 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 (Rocklands) 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 Rocklands 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 Rocklands, 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.










