Nine Mile Reef Surf Break

Lat Long: 34.07° S 18.66° E

Nine Mile Reef Surf Forecast and Surf Report

Issued: 7 am 26 Jul 2026 (local time)

Forecast update in  hr  min

Today's Nine Mile Reef sea temperature is
15.0° C
0.5° 

Nine Mile Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Nine Mile Reef surf forecast from 26 Jul 2026:

  • Best quality surf: Sunday 2 Aug, 8AM (local time) - 4ft (1.2m), 19s period, SSW swell with offshore winds.
  • Most powerful swell: Monday 27 Jul, 11AM (local time) - 6.5ft (2.0m), 17s period, SSW swell with 2,349 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 29 Jul, 5AM (local time) - 4.5ft (1.4m), 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 Wednesday (Jul 29) at 5AM. The primary swell is predicted to be 1.4m and 13s period with a secondary swell of 0.7m and 7s. Another secondary swell of 0.4m and 3s 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 2.0m 17s and forecast to arrive on Monday (Jul 27) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 4s period and expected on Sunday (Aug 02) at 8AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Wed 29th Jul)4.5ft (1.4m) 13s
Best Surf 8AM (Sun 2nd Aug)4ft (1.2m) 19s
Most Powerful11AM (Mon 27th Jul)6.5ft (2.0m) 17s

Table - best surf conditions forecast for Nine Mile Reef over the next 16 days.


The Lowdown

Alright, Rusty here. Let’s have a look at what Nine Mile Reef has in store for us.

We’ve got a pretty solid run of surf on the horizon, though it’s not without its hiccups. The water’s sitting at 59°, which is about normal for this time of year – nothing out of the ordinary.

Sunday morning the 26th kicks things off with clean, glassy conditions. We’re looking at 5ft of SW swell with an 11-second period, and the combined energy is a moderate 727. It’s a nice, tidy wave for a beginner-friendly reef setup, and with the glassy wind, it’ll be clean as a whistle. Not a standout overall, but a decent start.

Monday the 27th is a write-off. That swell jumps up to 7ft from the SSW with a 17-second period, but it’s getting smashed by a cross-onshore wind at 16 mph. The combined energy hits a massive 2349, but the wind will absolutely ruin it. This is more of a kite-surfing setup than a paddle session.

Tuesday and Wednesday the 28th and 29th see the swell dropping back to the 4ft to 6ft range, but the wind stays ugly until Wednesday morning. That’s where we get a nice little window on Wednesday the 29th morning – glassy again, 4ft SSW swell with a 13-second period, moderate energy at 659. Clean, but nothing to write home about.

Thursday the 30th and Friday the 31st morning are pretty flat or poor, but hold on – Friday afternoon the 31st throws a curveball. We get a sudden 6ft SE swell, but it’s only got a 7-second period, meaning short, choppy, and messy despite the glassy wind. The energy is moderate at 516, but that short period means it won’t hold together well on the reef.

The real standout here is Sunday the 2nd of August. The morning shows 5ft of SSW groundswell with an incredibly long 18-second period and a moderate offshore wind from the NNW at 12 mph. The combined energy is a strong 1434. This is a proper, powerful groundswell. Because it’s a reef break, that long period will wrap in beautifully and offer some seriously nice, lined-up waves. The afternoon keeps it clean with a 5ft SSW swell and a 16-second period. This is the best on offer – for experienced surfers only, as that size and power is substantial.

Beyond that, the first week of August keeps a steady pulse of 4ft to 6ft SW swell with clean conditions, especially on the 3rd, 4th, and 5th mornings. The 8th of August shows another solid pulse – 6ft SW swell with a 14-second period and a moderate offshore wind, energy at 1255. Another excellent window for experienced crew.

So, to wrap it up: the standout window is Sunday the 2nd of August, with that long-period SSW groundswell and offshore wind. The 8th of August is also a strong runner-up. There are gaps of poor, wind-affected days, but overall, Nine Mile Reef has a solid few weeks of waves if you pick your moments.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 21°C on Sun afternoon, min 12°C on Mon night). Winds increasing (calm on Sun morning, strong winds from the SSE by Mon afternoon).

Days 4-6 Weather Summary

Mostly dry. Warm (max 20°C on Fri afternoon, min 12°C on Wed morning). Wind will be generally light.

Sunday
26
Monday
27
Tuesday
28
Wednesday
29
Thursday
30
Friday
31
Saturday
1
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
1
2
0
0
0
0
2
2
3
2
2
0
0
1
1
3
2
2
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.4
SW
11
1.3
SW
14
1.5
SSW
13
2
SSW
17
1.9
SSW
17
1.8
SSW
15
1.7
SSW
14
1.6
SSW
14
1.4
SSW
13
1.3
SSW
13
1.3
SSW
13
1.2
SSW
13
1.1
SSW
13
1
SSW
13
1
SW
13
0.8
SW
12
1.8
SE
7
0.9
SSE
8
0.6
SW
12
0.7
SW
12
0.7
SW
13
Wave Graph
Metric surfscale
Energy kJ
471
639
679
2349
2097
1527
1191
1014
680
536
577
491
408
346
321
175
301
89
83
153
176
Wind (km/h)
0
WNW
10
S
15
S
25
SSE
35
SE
25
ESE
25
ESE
25
ESE
10
E
5
NNE
10
S
0
SE
15
S
20
SSE
15
ESE
5
ESE
5
S
10
E
5
E
0
SSW
15
NNE
Wind State
glassy
on
on
cross-on
cross-on
cross-on
cross-on
cross
cross
glassy
on
glassy
on
on
cross
cross
glassy
cross-off
glassy
glassy
off
High Tide
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
5:02PM1.55m
Low Tide
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
10:47AM0.13m
11:13PM0.20m
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
clear
clear
clear
clear
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:43
7:41
7:41
7:39
7:39
7:39
7:37
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:00
6:00
6:01
6:02
6:02
6:04
6:05
 mm
Temp °C
19
21
14
16
15
13
15
17
14
15
18
15
15
16
15
16
20
19
22
25
23
Feels °C
17
19
12
11
8
7
10
12
11
14
16
13
13
12
12
14
18
16
19
23
20
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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