Surf Forecasts:
Nine Mile Reef surf forecast from 21 Sep 2026:
- Best quality surf: Sunday 27 Sep, 5AM (local time) - 8ft (2.5m), 14s period, SW swell with glassy winds.
- Most powerful swell: Sunday 27 Sep, 5AM (local time) - 8ft (2.5m), 14s period, SW swell with 2,191 kJ wave energy.
- Next surfable swell (1★+): Tuesday 22 Sep, 2AM (local time) - 4.5ft (1.3m), 6s period with ESE 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 Tuesday (Sep 22) at 2AM. The primary swell is predicted to be 0.5m and 14s period with a secondary swell of 0.6m and 11s. Another secondary swell of 0.6m and 6s is also forecast. Another secondary swell of 1.3m and 6s is also forecast. 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 Sunday (Sep 27) at 5AM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Saturday (Sep 26) at 11PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 22nd Sep) | 4.5ft (1.3m) 6s |
| Best Surf | 5AM (Sun 27th Sep) | 8ft (2.5m) 14s |
| Most Powerful | 5AM (Sun 27th Sep) | 8ft (2.5m) 14s |
Table - best surf conditions forecast for Nine Mile Reef over the next 16 days.
Short Range ForecastSome drizzle, heaviest during Mon night. Warm (max 27°C on Mon afternoon, min 14°C on Wed night). Winds increasing (calm on Mon night, fresh winds from the SSE by Wed afternoon). | Days 4-6 Weather SummaryHeavy rain (total 23mm), heaviest during Sat morning. Warm (max 26°C on Thu afternoon, min 14°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | Sunday 27 | |||||||||||||||
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 12 | SW 12 | ESE 6 | SW 13 | SSW 12 | SSW 11 | SW 11 | SSE 6 | SSE 7 | SE 7 | SSW 14 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 15 | SW 14 | SW 14 | SW 14 | SW 14 | S 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 200 | 158 | 115 | 245 | 247 | 151 | 92 | 283 | 229 | 344 | 763 | 757 | 485 | 392 | 260 | 1001 | 890 | 588 | 355 | 313 | 439 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | glassy | cross-off | cross-on | on | on | cross-on | cross-on | cross-on | on | cross-off | cross-off | on | cross-off | cross-off | cross-off | off | on | cross-on | cross-on |
High Tide | 12:28PM1.08m | 00:35AM1.11m | 1:03PM1.22m | 1:12AM1.23m | 1:33PM1.36m | 1:44AM1.34m | 2:01PM1.48m | 2:15AM1.44m | 2:29PM1.59m | 2:46AM1.52m | 2:59PM1.67m | 3:18AM1.56m | 3:30PM1.70m | 3:51AM1.56m | |||||||
Low Tide | 6:43PM0.57m | 6:53AM0.45m | 7:17PM0.44m | 7:24AM0.33m | 7:47PM0.31m | 7:52AM0.23m | 8:15PM0.19m | 8:20AM0.15m | 8:44PM0.09m | 8:49AM0.09m | 9:14PM0.02m | 9:19AM0.05m | 9:45PM-0.01m | ||||||||
 | |  |  | |  | | | | |  | | | |  |  | | | | | | |
 | 6:37 | — | — | 6:35 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — |
 | — | 6:39 | — | — | 6:40 | — | — | 6:42 | — | — | 6:42 | — | — | 6:43 | — | — | 6:44 | — | — | 6:44 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | 14 | 9 | — | — | — | — | 1 |
Temp °C | 23 | 27 | 24 | 27 | 26 | 18 | 17 | 18 | 17 | 21 | 26 | 23 | 25 | 25 | 19 | 16 | 16 | 15 | 15 | 17 | 16 |
Feels °C | 22 | 26 | 24 | 26 | 25 | 19 | 12 | 13 | 13 | 21 | 26 | 23 | 24 | 25 | 21 | 14 | 11 | 13 | 14 | 13 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 11 | SW 13 | SSW 12 | SSW 11 | SW 11 | SW 11 | SW 10 | SSE 7 | SSW 14 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 |
| kJ | 200 | 158 | 96 | 245 | 247 | 151 | 92 | 40 | 85 | 117 | 763 | 757 | 485 | 392 | 260 | 1001 | 890 | 588 | 355 | 313 | 162 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SE 6 | SE 5 | S 16 | SE 7 | S 12 | S 12 | S 16 | S 16 | — | SSE 7 | SE 8 | E 8 | SSW 16 | SSE 11 | S 8 | S 11 | S 7 | — | S 15 |
| kJ | 45 | 44 | 20 | 7 | 5 | 2 | 11 | 11 | 5 | 181 | — | 30 | 48 | 1 | 223 | 22 | 5 | 2 | 74 | — | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | SSW 14 | SE 7 | S 15 | S 13 | SW 15 | W 9 | S 16 | SW 9 | — | S 6 | — | — | ESE 9 | ESE 8 | S 11 | S 8 | SW 8 | — | — |
| kJ | — | — | 115 | 47 | 5 | 14 | 9 | 6 | 5 | 43 | — | 7 | — | — | 30 | 6 | 9 | 1 | 73 | — | — |
Wind waves Height (m) Direction Period (s) | SE 5 | SE 6 | ESE 6 | — | — | SE 7 | SSE 4 | SSE 6 | SSE 7 | SE 7 | SSE 7 | — | — | — | — | — | W 3 | SSW 4 | — | S 7 | S 8 |
| kJ | 40 | 59 | 104 | — | — | 38 | 16 | 283 | 229 | 344 | 73 | — | — | — | — | — | 5 | 18 | — | 163 | 439 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 16 | 0 | 0 | 10 | 22 | 165 | 318 | 16 | 16 | 16 | 0 | 0 | 22 | 0 | 18 | 18 | 0 | 22 | 56 | 22 |
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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