Surf Forecasts:
Nine Mile Reef surf forecast from 15 Jul 2026:
- Best quality surf: Wednesday 15 Jul, 11PM (local time) - 7ft (2.1m), 14s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 22 Jul, 2PM (local time) - 18ft (5.5m), 14s period, SW swell with 10,046 kJ wave energy.
- Next surfable swell (1★+): Wednesday 15 Jul, 11PM (local time) - 7ft (2.1m), 14s period with SW 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 Wednesday (Jul 15) at 11PM. The primary swell is predicted to be 2.1m and 14s 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 5.5m 14s and forecast to arrive on Wednesday (Jul 22) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 5s period and expected on Wednesday (Jul 22) at 5AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Wed 15th Jul) | 7ft (2.1m) 14s |
| Best Surf | 11PM (Wed 15th Jul) | 7ft (2.1m) 14s |
| Most Powerful | 2PM (Wed 22nd Jul) | 18ft (5.5m) 14s |
Table - best surf conditions forecast for Nine Mile Reef over the next 16 days.
The Lowdown
Alright folks, Rusty here, checkin' in with a look at what Nine Mile Reef is cookin' up for us over the next couple of weeks.
First thing you gotta know, the water temp is sittin' at 58°, which is a bit colder than normal for this time of year. Nothing crazy, but you'll be glad you peeled that extra layer out of the car.
We're gonna see a slow start, some modest swell tomorrow afternoon, the 15th, coming in around 6 ft from the SW, but it's gonna be a bit messy with a cross-onshore breeze and that 16-second period is a long one for a reef break. Expect it to be fat and maybe not lining up perfect.
Thursday the 16th is where it starts to get interesting. We've got clean 5 ft SW swell, and more importantly, it's glassy in the morning. For a reef setup like this, that's the dream. It'll feel small but super smooth.
The real standout, the one you circle on the calendar, is Tuesday the 21st. We get a big pulse of 8 ft SSW groundswell hitting early with a fresh offshore breeze from the N. The power will be insane (combined energy of 2602). Now, that size is getting into expert territory, but for the crew that can handle it, the waves will be holding up solid and beautiful through the morning. The energy carries through Wednesday the 22nd too, but that swell jumps to 16 ft – that's only for the madmen, and a bit sketchy at this break.
After that big event, things clean up again nicely on Saturday the 25th. Morning session looks clean with a 7 ft SSW swell puffing from the NNW (3143 combined energy). It's a groundswell with a 15-second period, so expect some nice long lines and big sets.
For the rest of the run, we see solid pulses of 6 ft to 7 ft SW swell and mostly clean winds through the mornings. Monday the 28th looks particularly nice with glassy conditions and 7 ft SSW swell.
This spot can get busy, especially when the swell is good, so be prepared to share the water. Overall, we've got waves on the horizon, just gotta pick your session. The 21st is the big one, the 25th is the cleaner option.
Stay stoked, and I'll see ya out there.
Rusty
Short Range ForecastMostly dry. Very mild (max 18°C on Fri afternoon, min 13°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Sat night. Very mild (max 18°C on Sat afternoon, min 11°C on Mon morning). Winds increasing (calm on Sun morning, fresh winds from the N by Tue morning). | ||||||||||||||||||||
Wed 15 | Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | |||||||||||||||
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) | SW 16 | SW 14 | SW 13 | SW 13 | SW 12 | SW 11 | SW 10 | SSW 10 | SW 11 | SW 10 | SW 12 | SW 12 | SW 11 | SW 11 | SSW 11 | SSW 10 | SSW 12 | SSW 14 | SSW 14 | SSW 13 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1384 | 1581 | 933 | 734 | 578 | 423 | 316 | 168 | 220 | 251 | 442 | 349 | 202 | 182 | 105 | 245 | 920 | 2589 | 1977 | 1401 | 9190 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | glassy | on | cross-on | glassy | on | glassy | off | cross-off | off | cross-on | on | glassy | off | cross-off | off | off | cross-off | cross-off | cross-off |
High Tide | 4:12PM1.63m | 4:28AM1.56m | 4:55PM1.64m | 5:11AM1.49m | 5:37PM1.61m | 5:53AM1.40m | 6:18PM1.54m | 6:36AM1.29m | 7:00PM1.43m | 7:21AM1.18m | 7:44PM1.32m | 8:12AM1.08m | 8:35PM1.21m | 9:19AM1.01m | |||||||
Low Tide | 10:25PM0.08m | 10:41AM0.02m | 11:11PM0.10m | 11:21AM0.07m | 11:55PM0.16m | 12:00PM0.16m | 00:39AM0.25m | 12:39PM0.27m | 1:24AM0.34m | 1:19PM0.39m | 2:13AM0.44m | 2:07PM0.51m | 3:13AM0.52m | ||||||||
 |  |  |  |  | | | | | |  | | | | | | | | | | | |
 | — | — | 7:48 | — | — | 7:48 | — | — | 7:47 | — | — | 7:47 | — | — | 7:46 | — | — | 7:46 | — | — | 7:45 |
 | 5:52 | — | — | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — | — | 5:57 | — | — | 5:57 | — | 5:58 |
mm | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | 2 | — |
Temp °C | 16 | 14 | 14 | 16 | 15 | 16 | 18 | 16 | 16 | 18 | 15 | 14 | 15 | 13 | 14 | 15 | 13 | 14 | 16 | 15 | 15 |
Feels °C | 15 | 13 | 14 | 15 | 14 | 16 | 18 | 16 | 14 | 15 | 13 | 14 | 13 | 11 | 11 | 11 | 10 | 7 | 8 | 7 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 14 | SW 13 | SW 13 | SW 12 | SW 11 | SW 10 | SSW 10 | SW 11 | SW 10 | SW 12 | SW 12 | SW 11 | SW 11 | SSW 11 | SSW 10 | SSW 12 | SSW 14 | SSW 14 | SSW 13 | SW 13 |
| kJ | 1384 | 1581 | 933 | 734 | 578 | 423 | 316 | 168 | 220 | 251 | 442 | 349 | 202 | 182 | 105 | 245 | 920 | 2589 | 1977 | 1401 | 3415 |
Swell 2 Height (m) Direction Period (s) | SE 8 | — | — | — | — | — | S 15 | S 13 | S 11 | SW 12 | S 11 | S 10 | S 10 | S 8 | S 7 | SSW 15 | SSW 15 | ESE 11 | ESE 11 | SE 11 | — |
| kJ | 3 | — | — | — | — | — | 4 | 51 | 116 | 157 | 61 | 100 | 116 | 66 | 27 | 21 | 487 | 13 | 12 | 5 | — |
Swell 3 Height (m) Direction Period (s) | W 9 | — | — | — | — | — | E 11 | SW 16 | SSW 14 | S 11 | — | S 10 | WSW 8 | WSW 10 | SW 7 | W 9 | SE 12 | — | — | — | — |
| kJ | 59 | — | — | — | — | — | 2 | 10 | 123 | 85 | — | 123 | 6 | 19 | 19 | 6 | 22 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | W 11 | — | — | — | — | WNW 3 | — | — | NW 4 | NW 5 | SW 13 |
| kJ | — | — | — | — | — | — | — | — | — | — | 403 | — | — | — | — | 1 | — | — | 16 | 87 | 9190 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 10 | 0 | 0 | 12 | 10 | 0 | 10 | 0 | 0 | 0 | 0 | 16 | 22 | 0 | 0 | 18 | 0 | 256 | 256 | 249 | 19 |
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.
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