Nine Mile Reef Surf Break

Lat Long: 34.07° S 18.66° E

Nine Mile Reef Surf Forecast and Surf Report

Issued: 7 pm 12 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 13 Jul 2026:

  • Best quality surf: Wednesday 15 Jul, 8PM (local time) - 7ft (2.1m), 15s period, SW swell with glassy winds.
  • Most powerful swell: Wednesday 15 Jul, 8PM (local time) - 7ft (2.1m), 15s period, SW swell with 1,914 kJ wave energy.
  • Next surfable swell (1★+): Monday 13 Jul, 5AM (local time) - 3.5ft (1.0m), 10s period with S 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 Monday (Jul 13) at 5AM. The primary swell is predicted to be 1.0m and 10s period. 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 2.1m 15s and forecast to arrive on Wednesday (Jul 15) at 8PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Jul 15) at 8AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Mon 13th Jul)3.5ft (1.0m) 10s
Best Surf 8PM (Wed 15th Jul)7ft (2.1m) 15s
Most Powerful 8PM (Wed 15th Jul)7ft (2.1m) 15s

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


Alright folks, Rusty here. Let’s have a look at what’s comin’ down the pipe for Nine Mile Reef.

Right off the bat, we’ve got a bit of a slow start. The first couple of days are pretty ordinary. Monday the 13th and Tuesday the 14th have waves, but they’re tiny little things around 2ft to 3ft and the energy is weak (181 and 81). Not worth paddling out for, honestly. The wind is glassy or light offshore on the Tuesday morning, but there’s just no push behind it.

Things start to get interesting from Wednesday the 15th. Wednesday morning, the swell jumps up to 3ft from the SW with a long period of 17 seconds and a moderate energy reading (610). The wind is light offshore from the NNW, so it’ll be clean. That’s a good sign. Wednesday afternoon, the swell bumps up to 6ft but the wind turns messy, so it’s not the best part of the day.

Thursday the 16th is a standout. Morning session sees 5ft SW swell with a 13-second period and offshore winds from the NNW. The energy is solid (947), and it’s clean all morning. This is the best window of the first week—clean, lined-up waves at a reef break, with that long period groundswell giving you some real power. The afternoon stays clean with cross-offshore winds, but the morning is the pick.

Friday the 17th is a write-off. Strong onshore winds and choppy conditions. Don’t bother.

Saturday the 18th and Sunday the 19th both look good. Saturday has 4ft S swell with glassy conditions both morning and afternoon. The energy is moderate (495). Sunday morning, the wind goes offshore again with 4ft SW swell and a 12-second period, making it very clean. Both of these are solid days.

Now, we get a bit of a lull on Monday the 20th—windy and messy. Tuesday the 21st is a big one, but it’s a warning sign. The swell jumps to 8ft from the SSW with a 16-second period, and the energy is massive (3237). The wind is cross-shore, but the swell is too big for this reef break. That’s expert-only territory, and even then, it’s gonna be a heavy, straight wave at a reef. Probably better for the kite surfers if you’re into that.

The next big window is Friday the 24th. The morning has 5ft SSW swell with a 12-second period and clean cross-offshore wind. The afternoon is even better—7ft SW swell, 12-second period, and offshore wind from the NNW. The energy is strong (1220), and the conditions are excellent for experienced surfers. That afternoon session on Friday the 24th is the other standout of the whole outlook.

Saturday the 25th and Sunday the 26th are blown out. Strong onshore winds and huge, messy swell. Stay on the beach.

Monday the 27th has a clean morning with 7ft SW swell and offshore wind, but it’s borderline too big for the break. Tuesday the 28th wraps it up with a glassy morning, 5ft SW swell, and good energy (723). That’s a solid finish.

The water temp is about average for the time of year, nothing unusual to report.

The best of the lot? Thursday the 16th morning and Friday the 24th afternoon. The 16th has that clean, offshore morning with a 5ft SW groundswell, and the 24th afternoon has a bigger 7ft SW swell with offshore wind—both are prime for a reef break like this. Crowds are possible here, so get there early.

Rusty out.

Short Range Forecast

Mostly dry. Very mild (max 18°C on Mon afternoon, min 13°C on Tue morning). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 19°C on Sat afternoon, min 12°C on Fri night). Wind will be generally light.

Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
Sun
19
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Rating
(10 max)
2
1
1
1
1
1
1
3
3
4
3
3
3
0
0
2
2
2
3
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)
1.1
S
10
0.8
SSW
10
0.7
SSW
9
0.5
S
9
0.5
S
9
0.5
S
9
0.4
SW
18
0.9
SW
17
1.9
SW
15
2
SW
14
1.6
SW
13
1.4
SW
13
1.6
SW
12
1.4
SW
11
1.3
SSW
11
1.5
SSW
10
1.2
S
12
1
S
11
1.3
SW
13
1.2
SW
12
1.2
SW
11
Wave Graph
Metric surfscale
Energy kJ
237
111
78
45
42
40
78
470
1716
1604
947
669
718
485
404
407
393
235
529
376
354
Wind (km/h)
5
NE
5
NW
5
SSW
5
N
10
NNW
10
NW
10
NNW
10
NNW
5
SSW
5
SW
10
NNW
10
WNW
5
NNW
20
SSE
15
SE
10
ESE
0
NE
5
SSE
10
N
15
NNW
5
W
Wind State
cross-off
glassy
glassy
off
off
cross-off
off
off
cross-on
glassy
off
cross-off
glassy
cross-on
cross-on
cross
glassy
glassy
off
off
cross-off
High Tide
2:02AM1.51m
2:40PM1.48m
2:54AM1.56m
3:27PM1.57m
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
Low Tide
8:28AM0.09m
8:48PM0.17m
9:15AM0.03m
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
clear
clear
clear
part cloud
part cloud
clear
part cloud
clear
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:48
7:48
7:48
7:48
7:48
7:47
7:47
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:52
5:52
5:52
5:52
5:53
5:54
5:54
5:55
 mm
Temp °C
17
16
18
16
15
17
15
15
17
15
16
18
16
15
15
13
16
19
19
17
20
Feels °C
16
15
16
15
13
15
14
14
17
15
15
17
15
13
11
11
15
19
19
14
17
  • 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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