Nine Mile Reef Surf Break

Lat Long: 34.07° S 18.66° E

Nine Mile Reef Surf Forecast and Surf Report

Issued: 1 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 12 Jul 2026:

  • Best quality surf: Wednesday 15 Jul, 11PM (local time) - 7ft (2.1m), 14s period, SW swell with glassy winds.
  • Most powerful swell: Wednesday 15 Jul, 11PM (local time) - 7ft (2.1m), 14s period, SW swell with 1,704 kJ wave energy.
  • Next surfable swell (1★+): Monday 13 Jul, 2AM (local time) - 3.5ft (1.1m), 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 2AM. The primary swell is predicted to be 1.1m and 10s period with a secondary swell of 0.2m and 10s. Another secondary swell of 1.2m and 7s 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 2.1m 14s and forecast to arrive on Wednesday (Jul 15) at 11PM. 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+) 2AM (Mon 13th Jul)3.5ft (1.1m) 10s
Best Surf11PM (Wed 15th Jul)7ft (2.1m) 14s
Most Powerful11PM (Wed 15th Jul)7ft (2.1m) 14s

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


Alright, let’s talk about Nine Mile Reef. This is a reef break, open to the swell, and it breaks pretty consistently. Water temp is about 59°F, which is just a hair under average for this time of year—nothing crazy.

The run starts Sunday afternoon, 12 July. We’ve got a 4ft swell from the south, period of 10 seconds, and glassy conditions. The combined energy is moderate at 622. It’s clean and fun-sized for a beginner reef.

Monday, 13 July, drops off hard. Swell down to 2ft and 2ft, periods 9-10 seconds, weak energy (147-139). Surfable but ordinary. Tuesday is even smaller—2ft and 1ft with no energy. A couple of flat days.

Wednesday morning, 15 July, brings a spike: 3ft from the SW, but the period is 17 seconds—that’s a long-period groundswell. Energy is moderate at 526, and it’s clean with a light cross-off breeze. That’ll draw some nice lines on the reef. The afternoon, though, gets 6ft with onshore wind and energy at 1583—marginal.

Thursday morning, 16 July, is a standout. 5ft from the SW, 13-second period, clean cross-off wind, moderate energy at 933. Very good. The afternoon gets a bit crossed up, but still okay.

Friday, 17 July, is ruined by onshore chop from the SE. 5ft swell, but the wind kills it. Skip it.

Saturday, 18 July, bounces back: glassy, 3ft from the SW, 14-second period, moderate energy at 579. Clean and fun. Sunday, 19 July, keeps it clean with offshore wind, 3ft, 12-second period. Good for a longboard.

Monday, 20 July, starts glassy with 3ft, 13-second swell, but fades to ordinary in the afternoon.

Then the big one. Tuesday, 21 July. Morning: 5ft SSW swell, 16-second period—very long groundswell. Offshore wind, clean. Energy is strong at 1563. Excellent for experienced surfers. Afternoon: 6ft, same direction, 16-second period, cross-off wind, energy at 1814. That’s the best session. It’s a bit big for beginners—over 5ft—so only for the crew who know the reef.

Wednesday, 22 July, morning has 7ft from the SSW, glassy, but the file says it’s too big for this break. Afternoon is onshore and messy. Thursday, 23 July, is worse: 7ft in the morning, glassy but too big, then 15ft in the afternoon with onshore wind. Energy is 9840—very strong. That’s kite territory, not paddle.

Friday, 24 July, through Sunday, 27 July, is all oversized. Waves from 8ft to 12ft, periods 13-16 seconds, energy in the thousands. Too big for Nine Mile Reef. The file keeps saying it’s too big. Hard pass.

Finally, Monday, 27 July, things calm down. Morning is 4ft from the SW, 14-second period, offshore wind, moderate energy at 807. Very good. The afternoon is clean and rideable.

The standout is Tuesday, 21 July—both sessions. Long-period groundswell, clean wind, strong energy. Second best is Saturday, 18 July, and Sunday, 19 July, for easy, clean waves. After 22 July, it’s all too big.

Rusty.

Short Range Forecast

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

Days 5-7 Weather Summary

Mostly dry. Very mild (max 18°C on Thu afternoon, min 13°C on Fri night). Wind will be generally light.

Sun
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
3
2
1
1
1
1
1
1
3
3
4
3
2
2
0
1
1
3
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)
1.3
S
10
1.1
S
10
0.6
SSW
10
0.7
SSW
9
0.5
S
10
0.5
S
9
0.4
SSE
9
0.3
SW
12
0.9
SW
17
1.8
SW
15
1.9
SW
14
1.6
SW
13
1.4
SW
13
1.7
SSW
12
1.5
SSW
11
1.5
SSW
11
1.3
SSW
10
1
SW
14
1
SW
13
1
SW
13
0.9
SW
12
Wave Graph
Metric surfscale
Energy kJ
358
237
77
78
47
43
26
23
410
1581
1459
933
669
782
499
476
342
363
336
330
236
Wind (km/h)
5
S
5
ENE
5
NW
5
S
5
N
10
N
10
NW
10
NNW
5
NNW
10
S
5
S
5
NW
5
W
5
S
20
SE
15
SE
10
ESE
0
NNW
5
SE
10
N
15
N
Wind State
glassy
cross-off
glassy
glassy
off
off
cross-off
off
cross-off
on
glassy
cross-off
cross
on
cross-on
cross-on
cross
glassy
glassy
off
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
Low Tide
7:54PM0.27m
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
part cloud
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
part cloud
clear
clear
part cloud
cloud
part cloud
cloud
cloud
cloud
part cloud
<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
18
17
16
18
16
15
17
15
15
17
15
15
18
17
14
15
14
17
21
20
18
Feels °C
17
16
15
16
16
13
15
14
14
16
15
14
17
17
11
12
13
17
20
20
14
  • 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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