Nine Mile Reef Surf Break

Lat Long: 34.07° S 18.66° E

Nine Mile Reef Surf Forecast and Surf Report

Issued: 7 pm 14 Jul 2026 (local time)

Forecast update in  hr  min

Today's Nine Mile Reef sea temperature is
14.5° C
1.0° 

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 14 Jul 2026:

  • Best quality surf: Wednesday 15 Jul, 11PM (local time) - 7ft (2.1m), 14s period, SW swell with glassy winds.
  • Most powerful swell: Tuesday 21 Jul, 11AM (local time) - 10ft (3.0m), 15s period, SSW swell with 3,828 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 15 Jul, 2AM (local time) - 1.5ft (0.4m), 18s 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 Wednesday (Jul 15) at 2AM. The primary swell is predicted to be 0.4m and 18s period with a secondary swell of 0.3m and 8s. Another secondary swell of 0.3m and 9s is also forecast. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Nine Mile Reef in the next 16 days are 3.0m 15s and forecast to arrive on Tuesday (Jul 21) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 9s period and expected on Wednesday (Jul 15) at 2PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Wed 15th Jul)1.5ft (0.4m) 18s
Best Surf11PM (Wed 15th Jul)7ft (2.1m) 14s
Most Powerful11AM (Tue 21st Jul)10ft (3.0m) 15s

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


The Lowdown

Alright, Rusty here. Let's talk about what's coming up for Nine Mile Reef.

We've got a curious run ahead. The early part of the window is a bit of a slow burn, with some decent conditions but not much power. Then, around the third week of July, things get *very* interesting, but it might be a case of too much of a good thing. The water temp is sitting pretty average for this time of year, nothing weird going on there.

Starting off Wednesday morning, the 15th of July, it's looking clean. We've got a light offshore breeze out of the NNW, and a small 3 ft SW groundswell with a very long 17-second period. The energy is weak (427), so the waves will be long-lined and lazy, but the conditions will be glassy. It's a good time for a beginner to get some practice in, but don't expect much punch.

Things pick up a bit by Thursday morning, the 16th. The swell jumps to 5 ft from the SW, still with a nice 13-second period. The wind is dead calm, absolutely glassy. The energy is moderate (933). This is about as clean as it gets for a reef, but the swell isn't quite big enough to be a standout. The afternoon turns a bit bumpy.

Friday morning, the 17th, is glassy again with a 5 ft SW swell, but the period drops to 11 seconds. It's clean, but the energy is moderate (426). The rest of the weekend stays small and clean, with the 18th and 19th offering some light wind action, but nothing to write home about.

Now, here's the real meat. Monday morning, the 20th of July, is a beautiful window. It's glassy, with a 5 ft SSW swell at 11 seconds. The energy is moderate (646). This is clean, fun, and the best size for that reef. It's a solid, consistent option for a morning session.

But hold on to your board. Tuesday morning, the 21st of July, is where things get wild. The swell is pumping at 10 ft from the SSW, with a 15-second period. The energy is strong (3840). The wind is light and offshore, but this is simply too big for Nine Mile Reef. The reef is a reef break, and with that much power, it's going to be a washing machine. This is for experts only, and even then, it's a massive call. The same goes for the 22nd and 23rd, with strong offshore winds but swells over 7 ft. The energy is strong to very strong (over 2946). This is more of a big-wave tow-in spot than a paddle session.

The swell finally drops back to a manageable 6 ft on the morning of Friday the 24th. The wind is light offshore, and the energy is a solid 1056. This is an excellent window for experienced surfers. The 26th of July morning also cleans up nicely, with a 7 ft SSW swell and offshore winds, another good one for the crew who can handle some size.

The final few days of the month, the 27th and 28th, see the swell drop back to a more manageable 4 ft to 5 ft with clean conditions. It's a good way to finish the run.

The best on offer: The standout is the morning of Thursday, July 16th. Glassy, clean, 5 ft SW groundswell, moderate energy. It's a perfect, friendly reef wave. For the more experienced crew, the morning of Friday, July 24th is a top pick with a 6 ft SW swell and offshore winds. The 10 ft days on the 21st and 29th are the biggest, but they are simply too big for this spot.

Keep your eyes on the forecasts, but for now, the calm after the storm looks like the real winner.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 19°C on Fri afternoon, min 13°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 2mm), mostly falling on Sun morning. Very mild (max 19°C on Fri night, min 11°C on Sun night). Wind will be generally light.

Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sunday
19
Monday
20
Tue
21
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
1
2
3
4
3
2
2
2
1
2
2
2
3
2
0
2
3
2
!
!
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SW
18
0.8
SW
17
1.7
SW
16
2
SW
14
1.6
SW
13
1.5
SW
13
1.4
SW
12
1.4
SW
11
1.2
SSW
10
1
SSW
10
1
SSW
10
0.8
SW
12
1.3
SW
12
1.3
SW
12
1.3
SW
11
1.5
SSW
12
1.6
SSW
11
1.6
SSW
11
2.2
SSW
13
3
SSW
15
2.5
SSW
15
Wave Graph
Metric surfscale
Energy kJ
78
354
1384
1581
933
734
578
423
283
196
197
214
450
486
382
575
592
581
1643
3828
2813
Wind (km/h)
15
N
10
NNW
10
SSW
5
ENE
0
NNW
5
S
5
SSE
5
SE
5
S
5
NNW
10
NNW
5
WNW
10
N
10
SSW
10
S
10
ESE
5
S
10
S
10
S
5
NNW
10
NW
Wind State
off
off
cross-on
cross-off
glassy
on
on
glassy
on
glassy
cross-off
cross-off
off
cross-on
on
cross-on
glassy
on
on
cross-off
cross-off
High Tide
3:42AM1.58m
4:12PM1.63m
4:28AM1.56m
4:55PM1.64m
5:11AM1.49m
5:37PM1.61m
5:53AM1.40m
6:18PM1.54m
6:36AM1.29m
7:00PM1.43m
7:21AM1.18m
7:44PM1.32m
8:12AM1.08m
Low Tide
9:38PM0.11m
9:59AM0.00m
10:25PM0.08m
10:41AM0.02m
11:11PM0.10m
11:21AM0.07m
11:55PM0.16m
12:00PM0.16m
00:39AM0.25m
12:39PM0.27m
1:24AM0.34m
1:19PM0.39m
2:13AM0.44m
2:07PM0.51m
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
cloud
cloud
cloud
part cloud
clear
clear
rain showers
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:48
7:48
7:48
7:47
7:47
7:46
7:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:52
5:52
5:53
5:54
5:54
5:55
5:57
5:57
 mm
2
Temp °C
14
15
17
15
15
17
15
16
19
19
18
19
16
15
15
13
13
14
12
12
15
Feels °C
12
13
16
15
16
16
15
15
19
19
16
17
15
13
12
10
12
11
10
10
12
  • 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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