
Surf Forecasts:
Nine Mile Reef surf forecast from 8 Jul 2026:
- Best quality surf: Thursday 9 Jul, 5AM (local time) - 7ft (2.2m), 14s period, SSW swell with cross-onshore winds.
- Most powerful swell: Thursday 9 Jul, 2AM (local time) - 7ft (2.2m), 15s period, SSW swell with 1,993 kJ wave energy.
- Next surfable swell (1★+): Thursday 9 Jul, 5AM (local time) - 7ft (2.2m), 14s 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 09) at 5AM. The primary swell is predicted to be 2.2m and 14s period. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Nine Mile Reef in the next 16 days are 2.2m 15s and forecast to arrive on Thursday (Jul 09) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Wednesday (Jul 15) at 2PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Thu 9th Jul) | 7ft (2.2m) 14s |
| Best Surf | 5AM (Thu 9th Jul) | 7ft (2.2m) 14s |
| Most Powerful | 2AM (Thu 9th Jul) | 7ft (2.2m) 15s |
Table - best surf conditions forecast for Nine Mile Reef over the next 16 days.
G’day, Rusty here again, now in feet.
Alright, let’s break down Nine Mile Reef over the next couple of weeks. It’s a bit up and down, but there’s a few sessions worth setting the alarm for.
We start Wednesday, 8 July, with a clean morning. Glassy, no wind, and a nice 4.6ft swell from the SW with a solid 13-second period. The combined energy is moderate at 958, so there’s some push. Water temp is 59.7°, right about average for the time of year. That Wednesday morning is the best you’re gonna see for a while. But by the afternoon, the wind shifts onshore from the SSE at 12 mph, the swell bumps to 5.6ft, and the energy jumps to 2686 – it’s gonna be messy and blown out. Don’t bother.
Thursday, 9 July, the swell hits 6.9ft in the morning from the SSW with a 14-second period. That’s a solid groundswell, but with a cross-onshore breeze at 9 mph, it’ll be choppy and a bit unruly. Energy is strong at 1605. This reef gets a bit heavy when it’s over 5ft, so it’s not for beginners. The wind and tide might be okay, but the size is just too much for this break to handle cleanly. Friday, 10 July, is more of the same – 6.9ft swell, onshore winds, and 1479 energy. Not your day.
Saturday, 11 July, the swell drops to 6.2ft from the S, period at 12 seconds, with a light cross-shore breeze in the morning. Energy settles to 1204, but it’s still a big, lumpy reef. Marginal at best. The afternoon is cross-onshore and not much better.
Then we get a breather. Sunday, 12 July, morning turns glassy with the wind dropping to zero. Swell is down to 4.3ft from the S with an 11-second period and 672 energy. Nice, clean, relaxed session. The afternoon stays small at 3.9ft.
From Monday, 13 July, through to Wednesday, 15 July, the swell drops way off. We’re looking at tiny waves around 1ft to 2.3ft, with clean conditions at times, especially Wednesday morning with offshore NNW wind at 12 mph and a super long 16-second period. But it’s tiny – energy is only 101 to 217. You can get wet, but don’t expect much.
Now for the second week. Thursday, 16 July, the morning has a fresh offshore N wind at 19 mph, with 2ft swell from the SW and a 14-second period. Energy is low at 217, but it’s clean. The afternoon picks up a bit to 2.3ft with a 13-second period and 332 energy – still small but sneaky fun on a log.
Friday, 17 July, is a write-off – onshore winds and a 5.9ft swell from the SSW, cross-onshore and choppy. Skip it.
Then we get another glassy moment on Saturday, 18 July, morning. The wind is a calm NE at 3 mph, swell at 3.3ft from the SW with an 11-second period, and energy at 486 – clean and cruisy. Sunday, 19 July, is even better: the morning is glassy again with an ENE breeze and a 3.6ft S swell, 10-second period, energy at 279. Then the afternoon goes full glass – zero wind, 3.3ft swell from the S with an 11-second period and 376 energy. That Sunday afternoon is a beauty.
Monday, 20 July, the wind cranks up again offshore from the N at 22 mph, dropping to 19 mph in the afternoon with 3.3ft and 3ft swells from the SSW. Periods are 13 and 12 seconds, energy around 380-466 – clean but fresh. Tuesday, 21 July, gets gnarly with a strong cross-offshore NW wind at 25 mph in the morning, and a 3.6ft swell with a very long 16-second period. Energy jumps to 1271. That’s a lot of power for the size – the long period will make it wall up and tricky on the reef. Afternoon is cleaner.
The standout for the whole period? Lock in Wednesday, 22 July. The morning has a clean offshore NNW wind at 6 mph,
Short Range ForecastMostly dry. Very mild (max 17°C on Wed afternoon, min 11°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Sat afternoon, min 11°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | |||||||||||||||
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) | SW 13 | SW 16 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | S 12 | S 12 | SSW 11 | S 11 | S 10 | S 10 | S 10 | SSW 11 | SSE 7 | S 9 | S 9 | SW 12 |
Wave Graph | |||||||||||||||||||||
629 | 1486 | 1993 | 1605 | 1326 | 1725 | 1467 | 1175 | 931 | 1039 | 887 | 376 | 379 | 294 | 196 | 90 | 65 | 41 | 87 | 79 | 51 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross | glassy | cross-on | off | off | cross-on | glassy | glassy | on | glassy |
High Tide | 8:58AM1.11m | 9:25PM1.30m | 10:19AM1.11m | 10:42PM1.31m | 11:40AM1.16m | 11:57PM1.35m | 12:50PM1.25m | 1:04AM1.43m | 1:48PM1.37m | 2:02AM1.51m | 2:40PM1.48m | 2:54AM1.56m | 3:27PM1.57m | 3:42AM1.58m | |||||||
Low Tide | 2:51PM0.47m | 4:03AM0.40m | 4:11PM0.49m | 5:23AM0.36m | 5:36PM0.46m | 6:35AM0.27m | 6:51PM0.37m | 7:35AM0.18m | 7:54PM0.27m | 8:28AM0.09m | 8:48PM0.17m | 9:15AM0.03m | 9:38PM0.11m | ||||||||
7:50 | — | — | 7:50 | — | — | 7:50 | — | — | 7:50 | — | — | 7:48 | — | — | 7:48 | — | — | 7:48 | — | — | |
— | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 14 | 13 | 14 | 12 | 13 | 15 | 13 | 14 | 17 | 15 | 16 | 17 | 16 | 14 | 17 | 15 | 15 | 18 | 16 |
Feels °C | 16 | 16 | 11 | 10 | 10 | 8 | 9 | 11 | 10 | 12 | 15 | 12 | 15 | 16 | 15 | 12 | 15 | 14 | 15 | 18 | 16 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 16 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | S 12 | S 12 | SSW 11 | S 11 | S 10 | S 10 | S 10 | S 8 | SSE 7 | S 9 | S 9 | S 8 |
629 | 1486 | 1993 | 1605 | 1326 | 1725 | 1467 | 1175 | 931 | 1039 | 887 | 376 | 379 | 294 | 196 | 90 | 51 | 41 | 87 | 79 | 51 | |
Swell 2 Height (m) Direction Period (s) | SW 18 | SW 16 | S 11 | — | — | SW 13 | W 14 | W 13 | WSW 12 | WSW 11 | WSW 11 | SSE 7 | WSW 11 | WSW 11 | WSW 10 | SSW 10 | SSW 11 | SSW 9 | SW 13 | SW 15 | SW 12 |
319 | 1200 | 93 | — | — | 437 | 16 | 3 | 14 | 12 | 24 | 81 | 23 | 23 | 20 | 54 | 65 | 34 | 44 | 54 | 38 | |
Swell 3 Height (m) Direction Period (s) | ESE 10 | — | — | — | — | — | — | — | W 8 | SW 20 | SW 18 | WSW 12 | SW 16 | SW 15 | SW 15 | WSW 10 | WSW 9 | SSE 10 | WSW 9 | WSW 9 | W 9 |
10 | — | — | — | — | — | — | — | 1 | 15 | 12 | 27 | 10 | 9 | 8 | 9 | 8 | 36 | 16 | 16 | 14 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SSE 4 | ESE 4 | ESE 4 | SE 5 | SE 6 | SE 5 | SE 5 | SE 6 | SE 7 | SE 8 | — | — | — | — | — | — | — |
— | — | — | — | 32 | 12 | 12 | 49 | 85 | 138 | 152 | 196 | 260 | 229 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 30 | 31 | 16 | 318 | 16 | 21 | 21 | 12 | 16 | 16 | 12 | 0 | 10 | 0 | 0 | 10 | 0 | 0 | 22 | 0 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.










