Nine Mile Reef Surf Break

Lat Long: 34.07° S 18.66° E

Nine Mile Reef Surf Forecast and Surf Report

Issued: 1 pm 01 Aug 2026 (local time)

Forecast update in  hr  min

Today's Nine Mile Reef sea temperature is
14.7° C
0.8° 

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 1 Aug 2026:

  • Best quality surf: Wednesday 5 Aug, 11PM (local time) - 7ft (2.2m), 14s period, SW swell with offshore winds.
  • Most powerful swell: Thursday 6 Aug, 2AM (local time) - 8ft (2.5m), 14s period, SW swell with 2,337 kJ wave energy.
  • Next surfable swell (1★+): Saturday 1 Aug, 8PM (local time) - 2.5ft (0.7m), 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 Saturday (Aug 01) at 8PM. The primary swell is predicted to be 0.7m and 13s period with a secondary swell of 0.3m 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 2.5m 14s and forecast to arrive on Thursday (Aug 06) at 2AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Wednesday (Aug 05) at 5PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sat 1st Aug)2.5ft (0.7m) 13s
Best Surf11PM (Wed 5th Aug)7ft (2.2m) 14s
Most Powerful 2AM (Thu 6th Aug)8ft (2.5m) 14s

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


The Lowdown

Alright, Rusty here. Let’s talk about the stretch ahead at Nine Mile Reef.

It’s a bit of a slow start, with the first few days offering only small, marginal waves. The reef is exposed to a SSE swell, and we’re waiting for the right conditions. Water temperature is around 59°, which is about 1° cooler than average for this time of year – just a bit of a chill in the water.

The first real window of opportunity kicks off on the morning of the 5th of August. We’ve got a clean 5ft SW groundswell with a 14-second period, and a moderate offshore breeze from the north. The combined energy is strong at 948, and it’s looking like a solid session for confident intermediates. The afternoon holds similar size and a cross-off wind, but the tide might mess with it a little.

Come Thursday the 6th, the swell picks up to 8ft, but that’s actually too big for this reef. The wind is glassy in the morning, but the power is just too much. It’s a definite pass unless you’re chasing something you shouldn’t be.

The standout of the whole outlook is the morning of the 7th of August. That’s the one to circle. We’ve got a 7ft SSW groundswell with a 13-second period, glassy conditions, and a combined energy of 1422. This is excellent surf for experienced surfers – clean, strong, and lined up. Crowds are possible here, so get in early.

The end of the first week gets messy. The 8th and 9th are blown out with strong onshore winds, and the swell jumps to a massive 18ft on the 9th – way too big for this spot. The 10th and 11th still hold big, powerful swell (15ft to 12ft), but with offshore winds, it’s clean and only for the brave. The 12th drops back to a more manageable 5ft, but the period is short and the wind is cross-shore, making it ordinary.

After a few poor days, the second week finishes strong. The morning of the 15th of August is a little gem – 4ft of SW groundswell with a very long 16-second period, glassy conditions, and a combined energy of 903. This is a top pick for a clean, mellow session, though the long period might make it break a little straight at the reef. The 16th of August is another highlight: 6ft SW groundswell, 15-second period, and a gentle offshore wind from the NNW. That’s excellent for experienced surfers, with clean, powerful lines.

Overall, the best of the best is the morning of the 7th of August – that’s the one to get excited about. The 15th and 16th are also promising, but they’re further out, so keep an eye on the forecasts.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 24°C on Sat afternoon, min 14°C on Tue morning). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 6mm), mostly falling on Wed night. Very mild (max 18°C on Tue afternoon, min 11°C on Thu morning). Wind will be generally light.

Sat
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
2
2
2
2
1
2
0
1
2
3
3
!
!
!
!
4
3
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SW
13
0.7
SW
13
0.8
SW
13
0.7
SW
12
0.9
SSW
13
0.9
SW
13
1
SW
12
0.9
SW
12
0.8
SW
11
0.8
SW
11
0.4
SW
18
1.5
SW
14
1.6
SW
14
2.5
SW
14
2.4
SW
13
2.4
SW
13
2.2
SSW
13
2
SSW
13
2
SSW
13
2.1
SSW
15
Wave Graph
Metric surfscale
Energy kJ
199
171
202
144
313
277
301
228
168
137
103
928
1077
2337
1972
1817
1778
1422
1349
1860
Wind (km/h)
5
S
5
ENE
10
N
5
NNW
5
SSE
0
S
5
SSE
0
S
10
S
5
SSE
10
N
20
N
20
NNW
20
N
5
E
15
SSE
5
ESE
5
S
5
SSW
15
N
Wind State
on
cross-off
off
glassy
glassy
glassy
on
glassy
on
glassy
off
off
cross-off
off
glassy
on
glassy
glassy
on
off
High Tide
5:02PM1.55m
5:12AM1.41m
5:34PM1.53m
5:47AM1.36m
6:08PM1.49m
6:26AM1.29m
6:47PM1.42m
7:13AM1.20m
7:37PM1.34m
8:17AM1.11m
8:47PM1.25m
9:49AM1.06m
10:22PM1.21m
Low Tide
11:13PM0.20m
11:16AM0.16m
11:46PM0.22m
11:48AM0.21m
00:24AM0.26m
12:25PM0.29m
1:08AM0.32m
1:10PM0.39m
2:06AM0.40m
2:11PM0.49m
3:28AM0.46m
3:46PM0.55m
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
rain showers
light rain
part cloud
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:37
7:35
7:35
7:35
7:33
7:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:05
6:05
6:06
6:07
6:07
6:07
6:08
 mm
4
2
Temp °C
24
20
20
22
19
18
19
16
16
18
14
15
18
14
12
14
13
13
15
13
Feels °C
22
17
16
19
17
17
17
14
14
17
13
11
13
11
11
12
11
12
14
13
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  • 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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