Surf Forecasts:
Nine Mile Reef surf forecast from 7 Jul 2026:
- Best quality surf: Thursday 9 Jul, 2AM (local time) - 7ft (2.1m), 15s period, SSW swell with cross-onshore winds.
- Most powerful swell: Thursday 9 Jul, 5AM (local time) - 7ft (2.1m), 14s period, SSW swell with 1,851 kJ wave energy.
- Next surfable swell (1★+): Tuesday 7 Jul, 2PM (local time) - 4.5ft (1.4m), 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 Tuesday (Jul 07) at 2PM. The primary swell is predicted to be 1.4m and 13s period with a secondary swell of 0.1m and 22s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Nine Mile Reef in the next 16 days are 2.1m 14s and forecast to arrive on Thursday (Jul 09) at 5AM. 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 13s period and expected on Friday (Jul 10) at 8PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Tue 7th Jul) | 4.5ft (1.4m) 13s |
| Best Surf | 2AM (Thu 9th Jul) | 7ft (2.1m) 15s |
| Most Powerful | 5AM (Thu 9th Jul) | 7ft (2.1m) 14s |
Table - best surf conditions forecast for Nine Mile Reef over the next 16 days.
Updates in hr min s Forecast update imminent
G'day, Rusty here. Let's talk about the next couple weeks at Nine Mile Reef.
We kick off Tuesday morning, July 7, with a clean 4.3ft SW groundswell at 12 seconds – nice long-period energy. A light offshore from the NNW at 6 mph keeps it smooth. Water temp's about 59°F, right on average for this time. Combined energy is moderate at 543. Good little session, but the break can get crowded sometimes.
Tuesday afternoon the swell bumps to 4.9ft, but the wind goes cross-shore from the WSW at 3 mph – still okay, not as crisp. Wednesday morning July 8 is another gem: glassy, 4.6ft of that 13-second SW groundswell, energy up to 958. That's a beautiful morning on the reef.
Then things turn. Thursday July 9 morning brings a 6.9ft SSW swell, but it's cross-onshore from the SSE at 12 mph – choppy and messy. Combined energy jumps to 1581 – strong, but the wind kills it. Friday July 10 is much the same: 6.9ft, cross-onshore SE winds at 12 mph, energy 1842. Not for the reef – maybe kite time.
Saturday July 11 morning drops to 6.2ft S swell, still cross-onshore, moderate chop. Energy 1160. Not the window. Sunday July 12 morning offers relief: glassy, 3.3ft SSW swell at 11 seconds – small but clean, energy 310. A fun little paddle.
Monday July 13 morning is glassy but tiny – 2.0ft SSE swell, period only 9 seconds, energy 143. Very ordinary. Tuesday July 14 morning has a light offshore from
Short Range ForecastMostly dry. Very mild (max 19°C on Tue afternoon, min 11°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Sun afternoon, min 11°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | |||||||||||||||
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 13 | SW 13 | SW 13 | SW 13 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | S 12 | S 12 | S 11 | SSW 11 | S 10 | SE 8 | SSE 9 | SSW 9 | SSW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 528 | 780 | 905 | 629 | 535 | 1850 | 1581 | 1206 | 1725 | 1430 | 1512 | 1069 | 1022 | 885 | 544 | 245 | 288 | 191 | 62 | 68 | 40 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross | glassy | glassy | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | glassy | on | cross-off | glassy | on | glassy |
High Tide | 8:19PM1.33m | 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 | ||||||||
Low Tide | 1:48PM0.41m | 2:49AM0.41m | 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 | ||||||||
 | |  | | |  |  | | |  | | | | | | | | | | | | |
 | 7:50 | — | — | 7:50 | — | — | 7:50 | — | — | 7:50 | — | — | 7:50 | — | — | 7:48 | — | — | 7:48 | — | — |
 | — | 5:49 | — | — | 5:49 | — | — | 5:50 | — | — | 5:51 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 19 | 16 | 16 | 17 | 14 | 13 | 15 | 13 | 13 | 15 | 13 | 15 | 17 | 14 | 15 | 18 | 17 | 16 | 18 | 16 |
Feels °C | 15 | 18 | 16 | 16 | 15 | 12 | 9 | 11 | 9 | 9 | 10 | 9 | 12 | 14 | 11 | 14 | 17 | 16 | 15 | 17 | 15 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 13 | SW 13 | SW 13 | SW 13 | SSW 15 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | S 12 | WSW 11 | S 11 | SSW 11 | S 10 | SSE 9 | SSE 9 | SSW 9 | SSW 10 |
| kJ | 528 | 780 | 905 | 629 | 535 | 1850 | 1581 | 1206 | 1725 | 1430 | 1512 | 1069 | 1022 | 12 | 544 | 245 | 288 | 121 | 62 | 68 | 40 |
Swell 2 Height (m) Direction Period (s) | SE 11 | SSW 21 | SW 20 | SW 18 | SW 16 | S 13 | — | — | SW 14 | S 16 | W 13 | WSW 12 | WSW 11 | SW 18 | WSW 12 | WSW 11 | WSW 11 | SSW 10 | SSW 9 | S 9 | SSE 8 |
| kJ | 4 | 45 | 98 | 319 | 508 | 14 | — | — | 1130 | 412 | 54 | 14 | 12 | 12 | 14 | 12 | 11 | 90 | 50 | 38 | 22 |
Swell 3 Height (m) Direction Period (s) | S 23 | SE 10 | ESE 10 | ESE 10 | — | — | — | — | — | W 14 | — | W 8 | SW 20 | SW 18 | SW 18 | SW 16 | SW 16 | W 10 | SSW 12 | W 9 | SSE 10 |
| kJ | 11 | 4 | 10 | 10 | — | — | — | — | — | 16 | — | 1 | 15 | 12 | 12 | 10 | 10 | 8 | 31 | 6 | 10 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | SSE 4 | ESE 4 | — | SSE 5 | SSE 7 | SE 5 | S 12 | ESE 6 | SE 7 | ESE 4 | SE 8 | — | — | — |
| kJ | — | — | — | — | — | — | — | 31 | 13 | — | 56 | 163 | 111 | 885 | 170 | 43 | 34 | 191 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 10 | 0 | 0 | 16 | 31 | 21 | 318 | 16 | 21 | 21 | 21 | 16 | 21 | 12 | 0 | 12 | 0 | 0 | 10 | 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.
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