
Surf Forecasts:
Nine Mile Reef surf forecast from 25 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 5AM (local time) - 4.5ft (1.4m), 14s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 27 Jul, 2PM (local time) - 8ft (2.4m), 18s period, SSW swell with 3,471 kJ wave energy.
- Next surfable swell (1★+): Saturday 25 Jul, 11PM (local time) - 6ft (1.8m), 12s 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 Saturday (Jul 25) at 11PM. The primary swell is predicted to be 1.8m and 12s period with a secondary swell of 0.2m 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 2.4m 18s and forecast to arrive on Monday (Jul 27) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sat 25th Jul) | 6ft (1.8m) 12s |
| Best Surf | 5AM (Wed 29th Jul) | 4.5ft (1.4m) 14s |
| Most Powerful | 2PM (Mon 27th Jul) | 8ft (2.4m) 18s |
Table - best surf conditions forecast for Nine Mile Reef over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’m breaking down the next couple of weeks at Nine Mile Reef. It’s a reef break that breaks fairly regularly, and it loves swell from the SSE direction. The water temp is about 60°, which is normal for this time of year, so no surprises there.
There’s a dry patch right at the start. Saturday July 25th and Sunday July 26th are not worth paddling for – onshore wind and messy waves. So you’re waiting a few days.
Monday July 27th is a total loss. Strong cross-onshore winds from the SSE and SE, blowing 15-22 mph, with a 7 ft SSW swell. The combined energy is huge (2377), but the wind is trashing it – choppy and lumpy. This is more of a kite surf day than a paddle surf day.
Tuesday July 28th is a little better but still cross-onshore, with lighter ESE winds around 9 mph. The swell is still 6 ft from the SSW with a 15-second period (1506 energy). Some power, but not clean.
The first real standout is Wednesday morning July 29th. Glassy, light ENE wind, and a 4 ft SSW swell with a 13-second period (706 energy). The waves will be clean and lined up. That’s your best morning in the first week.
Thursday July 30th is also glassy, with a 4 ft SSW swell (480-556 energy). Very good conditions for a smaller, clean session on the reef.
Friday July 31st sees a shift – offshore wind from the NNW at 12 mph, with a 3 ft SW swell (243 energy). The offshore breeze will groom the waves, making them clean and fun for a smaller board.
Saturday August 1st and Sunday August 2nd are small and average. Swells drop to around 2-3 ft, with glassy or light offshore wind. Not much power, but okay for a longboard.
For the second week: Monday August 3rd looks decent. Glassy in the morning, 4 ft SW swell (449 energy). Tuesday August 4th is clean with light offshore north wind, same size.
Wednesday August 5th morning is a big one. A 5 ft SW swell with a 13-second period (910 energy) and glassy conditions. That’s a solid, clean reef swell – one of the best of the whole outlook.
But the absolute standout is Thursday August 6th morning. Excellent for experienced surfers. The swell is 6 ft from the SSW, period 13 seconds, with a cross-offshore WNW wind at just 3 mph. Energy is pumping at 1817. That is a proper, powerful reef swell with clean conditions – for experts only.
Friday August 7th falls apart again with strong cross-onshore SE winds at 18 mph, messy. Then we finish strong: Saturday August 8th and Sunday August 9th look fantastic. Glassy or light offshore winds, with 4 ft to 5 ft SSW swells. Clean, lined-up, and fun for everyone.
The big windows: Wednesday August 5th morning and Thursday August 6th morning. Thursday is the one to circle – it’s the best wave of the whole 16 days if you can handle it. The rest is either small and clean or blown out, but those good sessions are worth the wait.
Rusty, out.
Short Range ForecastMostly dry. Very mild (max 18°C on Sun afternoon, min 13°C on Sun night). Winds increasing (calm on Sat night, fresh winds from the SE by Mon afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Thu afternoon, min 13°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | |||||||||||||||
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 13 | SSW 12 | SSW 12 | SW 11 | SW 14 | SSW 13 | SSW 17 | SSW 17 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 13 | SW 12 | SW 12 | SW 11 |
Wave Graph | |||||||||||||||||||||
1100 | 893 | 816 | 471 | 639 | 529 | 2377 | 2097 | 1527 | 1337 | 1301 | 814 | 528 | 414 | 447 | 373 | 440 | 311 | 209 | 164 | 127 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | glassy | glassy | on | on | cross-on | cross-on | cross-on | cross-on | cross | cross | glassy | on | glassy | glassy | glassy | off | off | cross-off | glassy |
High Tide | 1:11PM1.10m | 1:15AM1.18m | 1:54PM1.19m | 1:57AM1.26m | 2:30PM1.28m | 2:33AM1.34m | 3:02PM1.37m | 3:06AM1.39m | 3:33PM1.44m | 3:38AM1.43m | 4:03PM1.50m | 4:09AM1.45m | 4:33PM1.54m | 4:40AM1.44m | |||||||
Low Tide | 7:16PM0.55m | 7:45AM0.40m | 8:00PM0.47m | 8:21AM0.31m | 8:36PM0.39m | 8:53AM0.24m | 9:09PM0.32m | 9:22AM0.18m | 9:40PM0.26m | 9:51AM0.13m | 10:11PM0.22m | 10:19AM0.12m | 10:42PM0.20m | ||||||||
7:43 | — | — | 7:43 | — | — | 7:41 | — | — | 7:41 | — | — | 7:39 | — | — | 7:39 | — | — | 7:39 | — | — | |
— | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — | — | 6:02 | — | — | 6:04 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 17 | 16 | 17 | 18 | 14 | 16 | 15 | 14 | 15 | 19 | 16 | 16 | 19 | 18 | 20 | 22 | 21 | 17 | 19 | 16 |
Feels °C | 13 | 14 | 14 | 15 | 16 | 12 | 11 | 8 | 8 | 12 | 16 | 13 | 14 | 18 | 17 | 17 | 20 | 19 | 13 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SSW 12 | SSW 12 | SW 11 | SW 14 | SSW 13 | SSW 17 | SSW 17 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 13 | SW 12 | SW 12 | SW 11 |
1100 | 893 | 816 | 471 | 639 | 529 | 2377 | 2097 | 1527 | 1337 | 1301 | 814 | 528 | 414 | 447 | 373 | 440 | 311 | 209 | 164 | 127 | |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SE 11 | ESE 10 | SSW 15 | SW 14 | SSW 16 | — | — | — | — | — | SE 7 | SE 6 | SSE 6 | SE 8 | SE 9 | SE 9 | SSE 9 | SE 11 | SSE 12 | SE 12 |
530 | 5 | 11 | 246 | 437 | 211 | — | — | — | — | — | 65 | 19 | 15 | 105 | 99 | 99 | 27 | 33 | 27 | 22 | |
Swell 3 Height (m) Direction Period (s) | SE 11 | — | — | ESE 10 | S 10 | WSW 12 | — | — | — | — | — | — | — | — | — | S 10 | S 10 | S 9 | S 8 | SW 16 | WSW 15 |
19 | — | — | 10 | 31 | 206 | — | — | — | — | — | — | — | — | — | 8 | 17 | 6 | 1 | 10 | 22 | |
Wind waves Height (m) Direction Period (s) | — | SSE 3 | ESE 3 | — | — | S 4 | — | SSE 6 | SSE 8 | SE 7 | SE 7 | ESE 7 | ESE 7 | — | — | — | — | — | — | — | — |
— | 4 | 4 | — | — | 10 | — | 341 | 441 | 242 | 205 | 378 | 159 | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 12 | 16 | 0 | 0 | 21 | 32 | 83 | 196 | 16 | 16 | 16 | 12 | 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.










