
Surf Forecasts:
Nine Mile Reef surf forecast from 30 Jul 2026:
- Best quality surf: Wednesday 5 Aug, 8AM (local time) - 7ft (2.1m), 16s period, SW swell with offshore winds.
- Most powerful swell: Thursday 6 Aug, 8PM (local time) - 10ft (3.0m), 16s period, SSW swell with 3,822 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 11PM (local time) - 3ft (0.9m), 13s period with SSW swell.
Best Forecast Surf Conditions for Nine Mile Reef this week:
The surf forecast for Nine Mile Reef over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Jul 30) at 11PM. The primary swell is predicted to be 0.9m and 13s period with a secondary swell of 0.6m and 5s. Another secondary swell of 1.3m and 6s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Nine Mile Reef in the next 16 days are 3.0m 16s and forecast to arrive on Thursday (Aug 06) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Aug 05) at 11AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Thu 30th Jul) | 3ft (0.9m) 13s |
| Best Surf | 8AM (Wed 5th Aug) | 7ft (2.1m) 16s |
| Most Powerful | 8PM (Thu 6th Aug) | 10ft (3.0m) 16s |
Table - best surf conditions forecast for Nine Mile Reef over the next 16 days.
The Lowdown
Right, let's have a look at what's on the table for Nine Mile Reef. This is a beginner-friendly reef break, and it's exposed to the swell, so it can pick up a bit of energy.
The water's sitting at about 59°, which is pretty much what you'd expect for this time of year, no real surprises there. The optimum swell direction is from the SSE, but we're seeing a lot of SW groundswell coming through.
We're kicking off on Thursday the 30th of July with a clean, glassy 3ft set from the SSW. The period is a solid 13 seconds, so there's some proper energy in the water (361). It's not huge, but for a beginner spot, it's about as good as it gets with those conditions. Friday morning the 31st is a repeat performance, a smaller 3ft from the SW, but still glassy. The afternoon fades to 2ft, which is getting a bit limp.
Saturday the 1st of August has a glassy 2ft in the morning, but the wind switches onshore in the afternoon, so get out early. Sunday the 2nd has a clean 3ft with a light offshore breeze from the north in the morning, and it goes glassy again in the afternoon. That's a solid day for a long session.
Now, Monday the 3rd of August is a real standout. The morning brings a 4ft swell from the SW with a 14-second period. The energy jumps up to 603, and it's glassy. That's a fantastic combination for this reef—clean, lined-up waves with plenty of push. The best of the first week, without a doubt. The afternoon is a bit more onshore, but still surfable.
Tuesday the 4th has a clean 3ft in the morning with a light offshore, but the afternoon gets a bit messy with a cross-onshore wind.
Then things get serious. From Wednesday the 5th of August through to the 10th, the swell just keeps pumping. We're talking 7ft to 8ft, and even 16ft on the 9th. The combined energy gets into the thousands (2332, 3644, 5583). This is serious, powerful groundswell. For a beginner spot, this is way too big. The forecast says "too big for this break," and I have to agree. This is expert-only territory. The period is long, 14 to 16 seconds, which means those waves are going to be moving fast and breaking heavy. It's only worth looking at if you're a seasoned charger.
After that big pulse, things settle down. Tuesday the 11th of August morning has a 4ft from the SSE with a fresh offshore breeze. 502 energy, clean, and a much more manageable size. That's your second standout. Wednesday the 12th and Thursday the 13th are back to 7ft+ swells, again too big for the average punter.
Friday the 14th of August is another big day, 8ft with a 14-second period. Again, that's for the experts only.
So, to wrap it up. The absolute best on offer for the average surfer is Monday the 3rd of August morning. The 4ft glassy conditions with that 14-second groundswell is perfect. The second best is Tuesday the 11th of August morning with the 4ft from the SSE and a clean offshore wind. Everything else is either too small, too big, or blown out. The big stuff from the 5th to the 10th and 12th to 14th is a wild ocean, not a fun surf.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Sat afternoon, min 16°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Sun afternoon, min 10°C on Wed morning). Wind will be generally light. | |||||||||||||||||||
Thu 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||
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) | SSW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SSW 13 | SW 14 | SW 13 | SW 12 | SW 11 | SW 11 | SW 14 | SW 16 | SW 15 | SW 14 |
Wave Graph | ||||||||||||||||||||
351 | 249 | 175 | 116 | 82 | 198 | 163 | 171 | 202 | 144 | 313 | 598 | 511 | 423 | 237 | 194 | 305 | 2322 | 1967 | 1680 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | glassy | glassy | glassy | glassy | on | cross | off | glassy | glassy | glassy | on | glassy | off | cross-on | off | off | cross-off | off |
High Tide | 4:03PM1.50m | 4:09AM1.45m | 4:33PM1.54m | 4:40AM1.44m | 5:02PM1.55m | 5:12AM1.41m | 5:34PM1.53m | 5:47AM1.36m | 6:08PM1.49m | 6:26AM1.29m | 6:47PM1.42m | 7:13AM1.20m | 7:37PM1.34m | |||||||
Low Tide | 10:11PM0.22m | 10:19AM0.12m | 10:42PM0.20m | 10:47AM0.13m | 11:13PM0.20m | 11:16AM0.16m | 11:46PM0.22m | 11:48AM0.21m | 00:24AM0.26m | 12:25PM0.29m | 1:08AM0.32m | 1:10PM0.39m | 2:06AM0.40m | |||||||
— | — | 7:39 | — | — | 7:37 | — | — | 7:37 | — | — | 7:35 | — | — | 7:35 | — | — | 7:35 | — | — | |
6:02 | — | — | 6:04 | — | — | 6:05 | — | — | 6:05 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 17 | 19 | 21 | 20 | 20 | 22 | 20 | 21 | 23 | 18 | 17 | 19 | 16 | 15 | 18 | 14 | 13 | 16 | 14 |
Feels °C | 17 | 15 | 17 | 18 | 18 | 18 | 19 | 18 | 17 | 20 | 17 | 15 | 17 | 14 | 12 | 16 | 14 | 9 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SSW 13 | SW 14 | SW 13 | SW 12 | SW 11 | SW 11 | SW 14 | SW 16 | SW 15 | SW 14 |
351 | 249 | 175 | 116 | 82 | 198 | 163 | 171 | 202 | 144 | 313 | 598 | 511 | 423 | 237 | 194 | 305 | 2322 | 1967 | 1680 | |
Swell 2 Height (m) Direction Period (s) | — | SE 6 | SE 8 | SW 18 | SE 9 | SE 10 | SE 11 | SE 11 | SE 11 | SSW 16 | SE 12 | SE 11 | SE 11 | SE 11 | SE 10 | SE 11 | SW 10 | ESE 10 | ESE 10 | ESE 10 |
— | 15 | 16 | 12 | 21 | 25 | 29 | 19 | 19 | 137 | 6 | 5 | 5 | 4 | 4 | 5 | 141 | 10 | 9 | 9 | |
Swell 3 Height (m) Direction Period (s) | — | — | W 19 | — | SW 16 | SW 18 | — | S 9 | S 9 | SSE 11 | SW 18 | — | — | — | SW 16 | WSW 11 | E 11 | — | — | — |
— | — | 7 | — | 64 | 12 | — | 6 | 6 | 13 | 12 | — | — | — | 10 | 24 | 2 | — | — | — | |
Wind waves Height (m) Direction Period (s) | SE 4 | ESE 6 | ESE 8 | SE 5 | — | — | — | — | — | — | — | — | — | — | — | W 3 | NW 2 | NNW 4 | NW 4 | NNW 3 |
10 | 126 | 103 | 9 | — | — | — | — | — | — | — | — | — | — | — | 3 | 1 | 15 | 10 | 4 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 16 | 12 | 0 | 0 | 0 | 0 | 10 | 0 | 0 | 10 | 0 | 160 | 18 | 32 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||
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Information about the Nine Mile Reef Surf forecast
The above surf forecast table for Nine Mile Reef provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Nine Mile Reef can be found by selecting the local surf guide option on the grey menu. Our Nine Mile Reef 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 (Nine Mile Reef) 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 Nine Mile Reef 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.
Nine Mile Reef is 19 km (12 miles) from the very large city of Bellville. If you plan a holiday in Cape Town, look for hotels and other accommodation in Bellville. Bellville has rooms for a wide range of budgets as well as cheap car hire and transport links.











