Nine Mile Reef Surf Break

Lat Long: 34.07° S 18.66° E

Nine Mile Reef Surf Forecast and Surf Report

Issued: 1 am 18 Sep 2026 (local time)

Forecast update in  hr  min

Today's Nine Mile Reef sea temperature is
13.5°C
2.1° 

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 18 Sep 2026:

  • Best quality surf: Thursday 24 Sep, 8AM (local time) - 8ft (2.5m), 16s period, SSW swell with cross-onshore winds.
  • Most powerful swell: Thursday 24 Sep, 11AM (local time) - 10ft (3.0m), 15s period, SSW swell with 3,524 kJ wave energy.
  • Next surfable swell (1★+): Monday 21 Sep, 11PM (local time) - 2ft (0.6m), 14s 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 Monday (Sep 21) at 11PM. The primary swell is predicted to be 0.6m and 14s period with a secondary swell of 0.6m and 11s. Another secondary swell of 1.2m and 6s 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 3.0m 15s and forecast to arrive on Thursday (Sep 24) 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 1.1m 4s period and expected on Tuesday (Sep 22) at 5PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Mon 21st Sep)2ft (0.6m) 14s
Best Surf 8AM (Thu 24th Sep)8ft (2.5m) 16s
Most Powerful11AM (Thu 24th Sep)10ft (3.0m) 15s

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


Short Range Forecast

Mostly dry. Warm (max 24°C on Sun afternoon, min 11°C on Fri morning). Winds decreasing (fresh winds from the SE on Fri afternoon, light winds from the SE by Sun morning).

Days 4-6 Weather Summary

Moderate rain (total 11mm), heaviest on Wed morning. Warm (max 28°C on Mon afternoon, min 15°C on Wed afternoon). Wind will be generally light.

Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
0
0
1
2
0
1
1
1
2
1
0
1
1
1
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
SW
11
1.1
SW
13
1
SW
12
0.8
SW
12
1
SW
14
1.4
SW
14
1.2
SW
13
1
SW
13
0.8
SW
12
0.8
SW
12
0.7
SW
12
0.5
SSW
14
0.9
SW
13
0.9
SW
12
0.8
SSW
11
1.1
SW
7
1.3
SSW
8
1.8
S
9
3
SSW
15
2.3
SSW
14
2.2
SSW
13
Wave Graph
Metric surfscale
Energy kJ
288
437
306
200
412
754
495
320
210
169
130
113
238
199
151
128
191
541
3524
2228
1616
Wind (km/h)
30
SE
30
SE
10
SE
10
SSE
25
SSE
15
ESE
5
SE
15
SSE
10
ESE
5
SSE
10
SSE
10
NE
30
N
25
NNW
20
NNW
10
N
5
SSE
15
SE
20
SE
25
SE
20
SE
Wind State
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross
cross-on
on
cross-off
off
cross-off
off
off
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
7:25PM1.02m
8:41AM0.92m
9:33PM0.94m
11:23AM0.96m
11:40PM1.00m
12:28PM1.08m
00:35AM1.11m
1:03PM1.22m
1:12AM1.23m
1:33PM1.36m
1:44AM1.34m
2:01PM1.48m
2:15AM1.44m
Low Tide
12:59PM0.64m
1:58AM0.65m
2:48PM0.74m
4:47AM0.67m
5:47PM0.69m
6:13AM0.57m
6:43PM0.57m
6:53AM0.45m
7:17PM0.44m
7:24AM0.33m
7:47PM0.31m
7:52AM0.23m
8:15PM0.19m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
rain showers
rain showers
rain showers
light rain
light rain
rain showers
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:41
6:39
6:37
6:37
6:35
6:33
6:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:37
6:38
6:38
6:39
6:40
6:42
6:42
 mm
1
1
1
4
3
1
Temp °C
15
19
15
18
22
17
22
24
21
25
28
26
23
22
17
16
16
15
18
20
16
Feels °C
9
12
11
16
20
13
21
22
20
25
28
27
19
19
14
15
16
13
16
18
12
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
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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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