
Surf Forecasts:
Nine Mile Reef surf forecast from 11 Jul 2026:
- Best quality surf: Wednesday 15 Jul, 8PM (local time) - 7ft (2.2m), 15s period, SW swell with cross-onshore winds.
- Most powerful swell: Friday 17 Jul, 2PM (local time) - 8ft (2.5m), 13s period, SSW swell with 2,199 kJ wave energy.
- Next surfable swell (1★+): Monday 13 Jul, 5AM (local time) - 3.5ft (1.0m), 10s period with S 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 Monday (Jul 13) at 5AM. The primary swell is predicted to be 1.0m and 10s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Nine Mile Reef in the next 16 days are 2.5m 13s and forecast to arrive on Friday (Jul 17) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Thursday (Jul 16) at 2PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 13th Jul) | 3.5ft (1.0m) 10s |
| Best Surf | 8PM (Wed 15th Jul) | 7ft (2.2m) 15s |
| Most Powerful | 2PM (Fri 17th Jul) | 8ft (2.5m) 13s |
Table - best surf conditions forecast for Nine Mile Reef over the next 16 days.
Alright folks, Rusty here. Let’s get into it. We’re looking at a single spot for the next 16 days, and it’s a bit of a mixed bag with a lot of waiting.
The only game in town is Nine Mile Reef, a reef break that's a solid beginner option but it's a fickle lady. The whole forecast period starts off with a bit of a whimper. The first few days have some swell, but the conditions are just not right. The wind is messy, the swell is short-period, and the energy is all over the place. It's not a total washout, but you won't be racing to get in the water.
For the first few days, we’ve got nothing to write home about. Saturday the 11th sees a 6ft S swell, but with a cross-on wind and a combined energy of 1232, it’s just a choppy mess. The water is sitting at 59°, which is about normal for this time of year. Sunday the 12th is a bit smaller, but the wind is still cross-shore, and the period drops to a weak 7 seconds. The energy is still moderate at 800. Just not surfable.
Monday the 13th and Tuesday the 14th are tiny, with waves barely reaching 2ft. The energy is weak (86-157), so it’s more of a paddle session than a surf. The water is still average temp.
Then we get a glimmer. Wednesday the 15th morning sees a glassy 2ft swell from the SW, but with a period of 16 seconds! That’s a very long period groundswell, and the energy is moderate at 257. It’s a sneaky little window of clean, glassy conditions, but the swell is tiny. The afternoon picks up to 7ft from the same direction, but the wind shifts onshore, turning it into a messy closeout.
Here’s the real standout. Thursday the 16th is the pick of the first week. The morning has a 6ft SW swell, a 14-second period, and glassy conditions. The energy is strong at 1167. The wind is light and offshore, so it'll be clean. This is excellent for experienced surfers. The afternoon is also glassy with a 5ft SW swell, but the energy drops a bit to 821. This is a legit window of solid, clean surf. The reef works best with a SSE direction, so this SW swell isn't perfect, but the quality of the conditions will make up for it.
Friday the 17th gets blown out with a strong 12 mph cross-on wind, making the 7ft to 8ft swell a choppy mess. The energy is high (1534-1926), but it's not worth it for a paddle. Honestly, this setup looks a lot more interesting for kite surfing than paddle surfing.
Saturday the 18th has a clean morning with a 5ft SW swell and a 14-second period, but the energy is huge at 1785. The afternoon is a total no-go: an 8ft SE swell with glassy conditions, but it’s just too big for this reef. The energy is massive at 3264. This is expert-only territory, and even then, it’s a big risk.
The following week (starting Sunday the 19th) calms right down. The swell drops to 3ft or less, and the energy is low (242-380). There are some clean windows with offshore winds, but the waves are small. It’s a rest week.
Then, on Wednesday the 22nd of July, we get another big one. An 8ft SW swell with a 14-second period and a gentle offshore wind. The energy is a massive 2670. This is again too big for the break, but the conditions are clean. Thursday the 23rd morning is glassy with a 6ft SW swell and energy of 1112. This is finally a good size for the reef and the conditions are perfect. This is a solid, clean morning.
The final days (24th to 26th) get messy again. Big swell (7ft to 10ft) with onshore winds and huge energy (1639 to 4784). It’s just too much.
So, the bottom line: Thursday the 16th is your best bet. It’s a solid, clean day with powerful, glassy surf. The only other real window is Thursday the 23rd morning, which is also glassy and a better size for the reef. The rest is either too small, too windy, or too big. Don't bother with the big days unless you're an expert looking for a challenge and don't mind the risk.
Rusty, signing off.
Short Range ForecastMostly dry. Very mild (max 18°C on Sat afternoon, min 13°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 17°C on Tue afternoon, min 14°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Sat 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Friday 17 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | S 12 | S 11 | SE 7 | S 10 | S 10 | SSW 10 | SSW 9 | S 10 | S 9 | S 9 | SW 12 | SW 16 | SW 16 | SW 14 | SW 14 | SW 13 | SW 12 | SSW 12 | SSW 13 | S 12 | SW 14 |
Wave Graph | |||||||||||||||||||||
1005 | 814 | 396 | 361 | 237 | 86 | 78 | 65 | 41 | 40 | 23 | 167 | 1933 | 1836 | 1167 | 821 | 1411 | 1402 | 1875 | 1415 | 822 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | on | cross | glassy | glassy | glassy | off | cross-off | off | glassy | on | glassy | glassy | glassy | glassy | cross-on | cross-on | cross | cross-off |
High Tide | 1:04AM1.43m | 1:48PM1.37m | 2:02AM1.51m | 2:40PM1.48m | 2:54AM1.56m | 3:27PM1.57m | 3:42AM1.58m | 4:12PM1.63m | 4:28AM1.56m | 4:55PM1.64m | 5:11AM1.49m | 5:37PM1.61m | 5:53AM1.40m | ||||||||
Low Tide | 6:51PM0.37m | 7:35AM0.18m | 7:54PM0.27m | 8:28AM0.09m | 8:48PM0.17m | 9:15AM0.03m | 9:38PM0.11m | 9:59AM0.00m | 10:25PM0.08m | 10:41AM0.02m | 11:11PM0.10m | 11:21AM0.07m | 11:55PM0.16m | 12:00PM0.16m | |||||||
— | — | 7:48 | — | — | 7:48 | — | — | 7:48 | — | — | 7:48 | — | — | 7:48 | — | — | 7:48 | — | — | 7:47 | |
5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:54 | — | 5:54 | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 15 | 15 | 18 | 17 | 16 | 18 | 16 | 15 | 17 | 15 | 15 | 16 | 14 | 15 | 17 | 16 | 14 | 14 | 13 | 16 |
Feels °C | 15 | 12 | 14 | 16 | 15 | 15 | 16 | 15 | 12 | 15 | 14 | 14 | 15 | 14 | 15 | 17 | 16 | 10 | 10 | 11 | 14 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 11 | SE 8 | S 10 | S 10 | SSW 10 | SSW 9 | S 10 | S 9 | S 9 | S 8 | SW 16 | SW 16 | SW 14 | SW 14 | SW 13 | SW 12 | SSW 12 | SSW 13 | S 12 | SW 14 |
1005 | 814 | 143 | 361 | 237 | 86 | 78 | 65 | 41 | 40 | 22 | 167 | 1933 | 1836 | 1167 | 821 | 1411 | 1402 | 1875 | 1415 | 822 | |
Swell 2 Height (m) Direction Period (s) | WSW 11 | WSW 12 | SSW 11 | WSW 11 | WSW 10 | SSE 9 | S 9 | SSW 9 | WSW 10 | WSW 10 | WSW 9 | SW 8 | SSE 8 | — | — | — | — | WSW 11 | SW 20 | SSW 16 | SSE 9 |
12 | 13 | 249 | 11 | 10 | 62 | 60 | 33 | 18 | 19 | 16 | 31 | 6 | — | — | — | — | 123 | 15 | 447 | 251 | |
Swell 3 Height (m) Direction Period (s) | SW 18 | SW 18 | WSW 11 | SW 15 | SW 15 | WSW 10 | W 9 | WSW 12 | SW 13 | SW 12 | SW 12 | SW 11 | SE 9 | — | — | — | — | S 21 | — | — | S 13 |
13 | 12 | 12 | 35 | 8 | 9 | 6 | 28 | 27 | 23 | 23 | 59 | 21 | — | — | — | — | 9 | — | — | 130 | |
Wind waves Height (m) Direction Period (s) | SE 6 | SE 7 | SE 7 | SE 7 | SE 7 | — | — | — | — | W 2 | W 3 | — | — | — | — | — | — | — | SE 4 | SE 6 | SE 8 |
202 | 377 | 396 | 301 | 143 | — | — | — | — | 1 | 4 | — | — | — | — | — | — | — | 36 | 240 | 582 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 12 | 12 | 16 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 21 | 12 | 0 | 0 | 10 | 21 | 16 | 12 | 0 |
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.











