
Surf Forecasts:
Nine Mile Reef surf forecast from 28 Jul 2026:
- Best quality surf: Thursday 30 Jul, 2AM (local time) - 4.5ft (1.3m), 13s period, SSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 28 Jul, 8PM (local time) - 5ft (1.6m), 14s period, SSW swell with 971 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 2AM (local time) - 4.5ft (1.3m), 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 30) at 2AM. The primary swell is predicted to be 1.3m and 13s period with a secondary swell of 0.6m and 6s. Another secondary swell of 1.3m and 6s is also forecast. 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 1.6m 14s and forecast to arrive on Tuesday (Jul 28) at 8PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Sunday (Aug 02) at 11PM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 30th Jul) | 4.5ft (1.3m) 13s |
| Best Surf | 2AM (Thu 30th Jul) | 4.5ft (1.3m) 13s |
| Most Powerful | 8PM (Tue 28th Jul) | 5ft (1.6m) 14s |
Table - best surf conditions forecast for Nine Mile Reef over the next 16 days.
The Lowdown
G’day, I’m Rusty. Let’s have a look at what’s coming up for Nine Mile Reef. The first week or so is pretty quiet, with small, clean windows but nothing that’ll get your heart racing. Then, around August 5th, a solid pulse of SW groundswell rolls in, but it brings a problem – the size gets too big for this reef, and the wind, while offshore at times, can’t save it. After that, the swell just keeps climbing to crazy levels, well past the comfort zone for this spot. So, the real standout is the window on Wednesday morning, August 5th, with a clean 6.2ft SW swell and a moderate offshore breeze from the north. That’s your best bet for a proper session, but only if you’ve got experience – anything over 5ft is pushing it for beginners. The water is sitting at 59°F, which is about average for this time of year – nothing out of the ordinary there.
Let’s break it down day by day. Starting Tuesday afternoon, July 28th, we’ve got a 5.6ft SSW swell, but it’s cross-shore with a moderate breeze at 15 mph and the energy is strong (1361). The surf is marginal, and the conditions are messy – not worth paddling out for. Wednesday morning, July 29th, sees the swell drop to 4.3ft from the SSW, with a slight cross-shore breeze at 3 mph from the east. The energy is moderate (577), and the waves are still marginal. Wednesday afternoon is similar, with a light cross-onshore breeze from the SW. Thursday morning, July 30th, is glassy with a 3.3ft SSW swell, period 13 seconds. The energy is moderate (506), and the conditions are good – clean and small, better for a longboard or a beginner. Thursday afternoon stays glassy in a light breeze, with the same 3.3ft swell. Friday morning, July 31st, is glassy again, with a 2.6ft SW swell, period 12 seconds, and weak energy (200). Nice clean small waves. Friday afternoon turns onshore from the south with 2.0ft SW swell – poor, not worth it.
Saturday morning, August 1st, is glassy, with a 2.3ft SW swell, period 14 seconds, and weak energy (227). Clean but tiny. Saturday afternoon stays glassy, with 2.6ft SW. Sunday morning, August 2nd, brings a clean offshore breeze from the NNW at 9 mph, with 2.6ft SW swell, period 13 seconds – small but clean. Sunday afternoon switches to a cross-offshore breeze from the NW, still 2.6ft. Monday, August 3rd, is onshore from the south, with 3.0ft SW swell, period 12 to 14 seconds, and moderate energy (431 to 617) – marginal. Tuesday, August 4th, stays onshore, with 3.3 to 3.6ft SW swell – poor conditions.
Now for the real action. Wednesday morning, August 5th, we’ve got a 6.2ft SW groundswell, period 14 seconds, and a moderate offshore breeze from the north at 15 mph. The energy is strong (1448), and the conditions are clean. This is excellent for experienced surfers, but the swell is over 5ft, so beginners should sit this one out. The optimum swell direction is SSE, and this is coming from SSW, so it’s not a perfect match, but the offshore wind makes it the best window. Wednesday afternoon sees the swell jump to 7.5ft, still SW, with a cross-offshore breeze – the wind and tide are favorable, but the swell is now too big for this reef, over 8ft. Thursday, August 6th, has 5.6 to 5.9ft SW swell, with cross-offshore winds from the NW at 15 to 18 mph – clean but marginal. Friday morning, August 7th, has 7.2ft SW swell, period 14 seconds, with a cross-offshore breeze – too big again. Friday afternoon stays big, with 7.2ft SW swell, period 15 seconds, and a cross-shore wind. Saturday morning, August 8th, is 7.2ft SSW swell, period 15 seconds, with a strong offshore breeze from the north at 12 mph – clean but too big. Saturday afternoon has a strong breeze at 28 mph from the NNW – poor conditions. Sunday, August 9th, sees 7.2 to 9.8ft SW swell, with strong cross-offshore winds – all too big.
Monday morning, August 10th, is massive – 23.0ft from the WSW, period 16 seconds, with a moderate offshore breeze. The energy is extreme (35891). This is only for experts, and even then, it’s likely too much for the reef. Monday afternoon drops to 18.0ft from the SSW, period 18 seconds – still huge
Short Range ForecastMostly dry. Very mild (max 19°C on Fri morning, min 12°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Sat afternoon, min 13°C on Mon morning). Wind will be generally light. | |||||||||||||||||||
Tue 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | ||||||||||||||
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 13 | SSW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 14 | SW 12 | SW 14 | SW 13 |
Wave Graph | ||||||||||||||||||||
1127 | 680 | 536 | 634 | 545 | 357 | 357 | 249 | 175 | 116 | 82 | 198 | 199 | 205 | 199 | 181 | 284 | 223 | 350 | 418 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross-off | glassy | glassy | cross-off | glassy | on | cross | glassy | glassy | off | off | cross-off | off | on | on | glassy |
High Tide | 3:02PM1.37m | 3:06AM1.39m | 3:33PM1.44m | 3:38AM1.43m | 4:03PM1.50m | 4:09AM1.45m | 4:33PM1.54m | 4:40AM1.44m | 5:02PM1.55m | 5:12AM1.41m | 5:34PM1.53m | 5:47AM1.36m | 6:08PM1.49m | |||||||
Low Tide | 9:09PM0.32m | 9:22AM0.18m | 9:40PM0.26m | 9:51AM0.13m | 10:11PM0.22m | 10:19AM0.12m | 10:42PM0.20m | 10:47AM0.13m | 11:13PM0.20m | 11:16AM0.16m | 11:46PM0.22m | 11:48AM0.21m | 00:24AM0.26m | |||||||
— | — | 7:39 | — | — | 7:39 | — | — | 7:39 | — | — | 7:37 | — | — | 7:37 | — | — | 7:35 | — | — | |
6:01 | — | — | 6:02 | — | — | 6:02 | — | — | 6:04 | — | — | 6:05 | — | — | 6:05 | — | — | 6:06 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 14 | 14 | 18 | 16 | 16 | 18 | 17 | 19 | 21 | 19 | 20 | 23 | 20 | 19 | 21 | 15 | 15 | 17 | 14 |
Feels °C | 11 | 10 | 12 | 16 | 14 | 15 | 16 | 15 | 17 | 18 | 18 | 18 | 20 | 18 | 15 | 17 | 13 | 13 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 14 | SW 12 | SW 14 | SW 13 |
1127 | 680 | 536 | 634 | 545 | 357 | 357 | 249 | 175 | 116 | 82 | 198 | 199 | 205 | 199 | 181 | 284 | 223 | 350 | 418 | |
Swell 2 Height (m) Direction Period (s) | — | S 11 | — | S 10 | SE 6 | SE 6 | — | SE 6 | SE 8 | SE 10 | SE 10 | SE 11 | SE 11 | S 10 | SE 11 | SE 12 | SW 19 | SW 16 | SW 12 | E 11 |
— | 3 | — | 2 | 20 | 11 | — | 15 | 25 | 24 | 25 | 29 | 20 | 7 | 20 | 5 | 54 | 203 | 137 | 2 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | SE 8 | W 19 | SW 18 | SW 16 | — | — | SSE 5 | S 9 | S 9 | SE 12 | SE 11 | WSW 11 | — |
— | — | — | — | — | — | — | 3 | 7 | 12 | 64 | — | — | 3 | 6 | 2 | 5 | 5 | 130 | — | |
Wind waves Height (m) Direction Period (s) | SE 7 | SE 7 | SE 6 | SE 6 | ESE 6 | ESE 7 | SE 5 | ESE 8 | — | — | — | — | — | — | NW 3 | NW 3 | WNW 4 | — | — | — |
234 | 131 | 41 | 26 | 127 | 138 | 11 | 130 | — | — | — | — | — | — | 3 | 1 | 10 | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 26 | 12 | 12 | 10 | 0 | 0 | 0 | 0 | 0 | 12 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 22 | 16 | 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.










