
Surf Forecasts:
Nine Mile Reef surf forecast from 1 Aug 2026:
- Best quality surf: Wednesday 5 Aug, 11PM (local time) - 7ft (2.2m), 14s period, SW swell with offshore winds.
- Most powerful swell: Thursday 6 Aug, 2AM (local time) - 8ft (2.5m), 14s period, SW swell with 2,337 kJ wave energy.
- Next surfable swell (1★+): Saturday 1 Aug, 8PM (local time) - 2.5ft (0.7m), 13s 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 Saturday (Aug 01) at 8PM. The primary swell is predicted to be 0.7m and 13s period with a secondary swell of 0.3m and 11s. 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 14s and forecast to arrive on Thursday (Aug 06) at 2AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Wednesday (Aug 05) at 5PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 1st Aug) | 2.5ft (0.7m) 13s |
| Best Surf | 11PM (Wed 5th Aug) | 7ft (2.2m) 14s |
| Most Powerful | 2AM (Thu 6th Aug) | 8ft (2.5m) 14s |
Table - best surf conditions forecast for Nine Mile Reef over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s talk about the stretch ahead at Nine Mile Reef.
It’s a bit of a slow start, with the first few days offering only small, marginal waves. The reef is exposed to a SSE swell, and we’re waiting for the right conditions. Water temperature is around 59°, which is about 1° cooler than average for this time of year – just a bit of a chill in the water.
The first real window of opportunity kicks off on the morning of the 5th of August. We’ve got a clean 5ft SW groundswell with a 14-second period, and a moderate offshore breeze from the north. The combined energy is strong at 948, and it’s looking like a solid session for confident intermediates. The afternoon holds similar size and a cross-off wind, but the tide might mess with it a little.
Come Thursday the 6th, the swell picks up to 8ft, but that’s actually too big for this reef. The wind is glassy in the morning, but the power is just too much. It’s a definite pass unless you’re chasing something you shouldn’t be.
The standout of the whole outlook is the morning of the 7th of August. That’s the one to circle. We’ve got a 7ft SSW groundswell with a 13-second period, glassy conditions, and a combined energy of 1422. This is excellent surf for experienced surfers – clean, strong, and lined up. Crowds are possible here, so get in early.
The end of the first week gets messy. The 8th and 9th are blown out with strong onshore winds, and the swell jumps to a massive 18ft on the 9th – way too big for this spot. The 10th and 11th still hold big, powerful swell (15ft to 12ft), but with offshore winds, it’s clean and only for the brave. The 12th drops back to a more manageable 5ft, but the period is short and the wind is cross-shore, making it ordinary.
After a few poor days, the second week finishes strong. The morning of the 15th of August is a little gem – 4ft of SW groundswell with a very long 16-second period, glassy conditions, and a combined energy of 903. This is a top pick for a clean, mellow session, though the long period might make it break a little straight at the reef. The 16th of August is another highlight: 6ft SW groundswell, 15-second period, and a gentle offshore wind from the NNW. That’s excellent for experienced surfers, with clean, powerful lines.
Overall, the best of the best is the morning of the 7th of August – that’s the one to get excited about. The 15th and 16th are also promising, but they’re further out, so keep an eye on the forecasts.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Sat afternoon, min 14°C on Tue morning). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Wed night. Very mild (max 18°C on Tue afternoon, min 11°C on Thu morning). Wind will be generally light. | |||||||||||||||||||
Sat 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | ||||||||||||||
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 13 | SW 13 | SW 12 | SSW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 18 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 15 |
Wave Graph | ||||||||||||||||||||
199 | 171 | 202 | 144 | 313 | 277 | 301 | 228 | 168 | 137 | 103 | 928 | 1077 | 2337 | 1972 | 1817 | 1778 | 1422 | 1349 | 1860 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-off | off | glassy | glassy | glassy | on | glassy | on | glassy | off | off | cross-off | off | glassy | on | glassy | glassy | on | off |
High Tide | 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 | 8:17AM1.11m | 8:47PM1.25m | 9:49AM1.06m | 10:22PM1.21m | |||||||
Low Tide | 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 | 2:11PM0.49m | 3:28AM0.46m | 3:46PM0.55m | ||||||||
— | — | 7:37 | — | — | 7:35 | — | — | 7:35 | — | — | 7:35 | — | — | 7:33 | — | — | 7:33 | — | — | |
6:05 | — | — | 6:05 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 2 | — | — | — | — | — |
Temp °C | 24 | 20 | 20 | 22 | 19 | 18 | 19 | 16 | 16 | 18 | 14 | 15 | 18 | 14 | 12 | 14 | 13 | 13 | 15 | 13 |
Feels °C | 22 | 17 | 16 | 19 | 17 | 17 | 17 | 14 | 14 | 17 | 13 | 11 | 13 | 11 | 11 | 12 | 11 | 12 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 13 | SW 13 | SW 12 | SSW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 10 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 15 |
199 | 171 | 202 | 144 | 313 | 277 | 301 | 228 | 168 | 137 | 96 | 928 | 1077 | 2337 | 1972 | 1817 | 1778 | 1422 | 1349 | 1860 | |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 11 | SSE 11 | SSW 16 | SE 14 | SW 15 | SE 12 | SE 11 | SE 11 | SSW 16 | SW 14 | W 9 | ESE 10 | ESE 10 | ESE 10 | SSW 16 | — | — | — | — |
17 | 18 | 12 | 137 | 8 | 54 | 6 | 5 | 5 | 25 | 103 | 41 | 20 | 10 | 10 | 107 | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | S 9 | S 9 | S 9 | S 8 | SE 12 | ESE 11 | ESE 11 | S 18 | SE 11 | SW 18 | ESE 10 | — | — | — | — | — | — | — | — |
— | 6 | 6 | 6 | 1 | 6 | 87 | 79 | 6 | 5 | 81 | 20 | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | NNW 3 | NW 4 | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | 5 | 29 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 16 | 0 | 0 | 0 | 0 | 0 | 22 | 0 | 22 | 0 | 0 | 0 | 18 | 12 | 12 | 16 | 12 | 0 | 10 | 10 |
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.











