
Surf Forecasts:
Nine Mile Reef surf forecast from 9 Jul 2026:
- Best quality surf: Thursday 9 Jul, 8PM (local time) - 7.5ft (2.3m), 13s period, SSW swell with cross-onshore winds.
- Most powerful swell: Friday 10 Jul, 2AM (local time) - 7.5ft (2.3m), 13s period, SSW swell with 1,804 kJ wave energy.
- Next surfable swell (1★+): Thursday 9 Jul, 8PM (local time) - 7.5ft (2.3m), 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 09) at 8PM. The primary swell is predicted to be 2.3m and 13s 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 2.3m 13s and forecast to arrive on Friday (Jul 10) 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 0.4m 13s period and expected on Friday (Jul 10) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Thu 9th Jul) | 7.5ft (2.3m) 13s |
| Best Surf | 8PM (Thu 9th Jul) | 7.5ft (2.3m) 13s |
| Most Powerful | 2AM (Fri 10th Jul) | 7.5ft (2.3m) 13s |
Table - best surf conditions forecast for Nine Mile Reef over the next 16 days.
Alright, this is Rusty. Let's have a look at what's on the menu for Nine Mile Reef.
Right off the bat, we've got a solid, long period swell rolling in Thursday morning, but it's a bit of a tricky one. The swell's coming in at a solid 7ft from the SSW, with a period of 14 seconds pumping a lot of energy. That's a proper groundswell, but combined with the cross-on shore wind, it's going to be a bit of a battle. The water's sitting at 60°, which is about average for this time of year – nothing to write home about.
The next few days are a bit of a mixed bag. Friday the 10th and Saturday the 11th are mostly messy with those cross-on winds, though there's still a fair bit of energy in the water. The swell is a bit too big for a beginner break, and the conditions aren't doing it any favors.
Now, let's get to the good stuff. Sunday the 12th afternoon is where it's at. The wind drops right out, going glassy, with a clean 4ft swell from the south at 10 seconds. The energy is still moderate, but with perfection like that, it's a no-brainer for a session. The best waves of the week, hands down.
The following week sees a lull of small, glassy but very ordinary waves from Monday the 13th through to Wednesday the 15th morning. Not much to get excited about.
Then, things start to build again. Wednesday the 15th afternoon and Thursday the 16th are looking promising. The swell picks up to 3ft and then 5ft from the SW, with a very long period of 16 seconds, and the wind goes offshore or light cross-off. That's a proper recipe for clean, lined-up waves. It's a solid call for the middle of the week.
The end of the first week and into the second gets blown out by strong winds, so Friday the 17th and Saturday the 18th are write-offs.
But hold on to your board shorts. The following Monday the 20th and Tuesday the 21st bring a massive pulse of energy. We're looking at a 8ft to 8ft SSW swell, with the energy readings going through the roof. That's a whole lot of water moving. The wind is light, but the size makes it strictly for the experienced crew. An 8ft swell with a 16-second period is a beast, and it'll be breaking straight and fast on this reef – definitely not a beginner's day.
The best of the second week, and possibly the standout of the whole forecast, lands on Wednesday the 22nd morning and Thursday the 23rd. The swell drops back to a more manageable 6ft to 7ft, but the direction swings to the WSW and the wind goes clean offshore. That's going to produce some excellent, powerful waves for the experienced surfers. Crowds are a possibility, but with that quality, it'll be worth sharing the lineup.
So, to sum it up: the pick of the bunch is Sunday the 12th afternoon for the glassy, clean conditions, and Thursday the 23rd morning for the big, powerful, offshore perfection. Get on it.
Rusty.
Short Range ForecastMostly dry. Very mild (max 18°C on Sat afternoon, min 11°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Mon afternoon, min 14°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||
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) | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | S 12 | S 12 | S 11 | S 11 | S 10 | SSW 10 | SSW 10 | SSW 9 | S 10 | SW 13 | SW 12 | SW 12 | SW 16 | SW 16 | SW 14 |
Wave Graph | |||||||||||||||||||||
1605 | 1326 | 1804 | 1568 | 1175 | 820 | 1056 | 902 | 630 | 442 | 308 | 108 | 78 | 69 | 47 | 43 | 41 | 37 | 159 | 511 | 1077 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | glassy | glassy | glassy | on | glassy | glassy | glassy | glassy | glassy | glassy | glassy |
High Tide | 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 | 4:12PM1.63m | 4:28AM1.56m | |||||||
Low Tide | 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 | 9:59AM0.00m | 10:25PM0.08m | ||||||||
7:50 | — | — | 7:50 | — | — | 7:50 | — | — | 7:48 | — | — | 7:48 | — | — | 7:48 | — | — | 7:48 | — | — | |
— | 5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 14 | 13 | 13 | 15 | 13 | 14 | 18 | 15 | 16 | 18 | 17 | 16 | 19 | 16 | 15 | 18 | 15 | 16 | 18 | 16 |
Feels °C | 10 | 10 | 9 | 9 | 11 | 9 | 12 | 15 | 12 | 14 | 17 | 16 | 15 | 18 | 15 | 14 | 17 | 14 | 15 | 17 | 16 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | S 12 | S 12 | S 11 | S 11 | S 10 | SSW 10 | SSW 10 | SSW 9 | S 10 | S 9 | S 9 | SSE 9 | SW 16 | SW 16 | SW 14 |
1605 | 1326 | 1804 | 1568 | 1175 | 820 | 1056 | 902 | 630 | 442 | 308 | 108 | 78 | 69 | 47 | 43 | 41 | 25 | 159 | 511 | 1077 | |
Swell 2 Height (m) Direction Period (s) | — | — | SW 13 | W 14 | W 13 | WSW 12 | WSW 11 | WSW 11 | WSW 12 | WSW 11 | WSW 11 | SSE 9 | SSE 9 | S 9 | SSW 9 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | SW 8 | — |
— | — | 437 | 16 | 54 | 14 | 12 | 12 | 13 | 12 | 11 | 92 | 65 | 63 | 33 | 34 | 32 | 28 | 31 | 37 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 8 | W 11 | SW 18 | SW 18 | SW 16 | SW 15 | WSW 10 | WSW 10 | W 9 | SW 13 | SW 13 | SW 12 | SW 12 | SSE 8 | W 9 | — |
— | — | — | — | — | 1 | 118 | 12 | 12 | 10 | 35 | 10 | 9 | 6 | 26 | 42 | 36 | 37 | 7 | 13 | — | |
Wind waves Height (m) Direction Period (s) | — | SSE 4 | E 3 | E 3 | SSE 5 | SSE 6 | SE 6 | SE 6 | ESE 5 | SE 8 | SE 7 | — | — | — | — | — | — | WSW 3 | — | — | — |
— | 34 | 5 | 3 | 67 | 109 | 182 | 163 | 149 | 364 | 237 | — | — | — | — | — | — | 2 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 318 | 16 | 21 | 21 | 12 | 16 | 16 | 12 | 12 | 0 | 0 | 0 | 16 | 0 | 0 | 0 | 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 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.










