Nine Mile Reef Surf Break

Lat Long: 34.07° S 18.66° E

Nine Mile Reef Surf Forecast and Surf Report

Issued: 7 pm 02 Aug 2026 (local time)

Forecast update in  hr  min

Today's Nine Mile Reef sea temperature is
14.6° C
0.9° 

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 3 Aug 2026:

  • Best quality surf: Thursday 6 Aug, 2AM (local time) - 7ft (2.1m), 14s period, SW swell with offshore winds.
  • Most powerful swell: Sunday 9 Aug, 2PM (local time) - 10ft (3.0m), 12s period, SW swell with 2,525 kJ wave energy.
  • Next surfable swell (1★+): Monday 3 Aug, 5AM (local time) - 3ft (0.9m), 13s 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 (Aug 03) at 5AM. The primary swell is predicted to be 0.9m and 13s period with a secondary swell of 0.1m and 14s. 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 3.0m 12s and forecast to arrive on Sunday (Aug 09) at 2PM. Winds are predicted to be 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 Wednesday (Aug 05) at 5PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Mon 3rd Aug)3ft (0.9m) 13s
Best Surf 2AM (Thu 6th Aug)7ft (2.1m) 14s
Most Powerful 2PM (Sun 9th Aug)10ft (3.0m) 12s

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


The Lowdown

G’day, it’s Rusty here. Let’s cut through the noise and look at the next couple of weeks for Nine Mile Reef. This is a reef set-up, exposed to the swell, and it's fairly consistent, which is good. It’s rated as a beginner wave, so we gotta keep an eye on size, because when it gets too big, this place turns from friendly to a handful real quick.

We start off quiet. Monday the 3rd has a small 3ft SW swell with 13 seconds of period, and with a light N wind and glassy conditions in the morning, it’s looking clean but tiny. The energy is weak (337), so it’s more of a splash around than a proper surf. Things stay flat and ordinary through Tuesday the 4th, with the swell dropping to 3ft and the wind going onshore in the afternoon. Nothing to get excited about.

Then we get our first real window of opportunity. Wednesday the 5th sees a jump in size to 5ft from the SW, with a very long 16-second period. The energy is moderate (1030) and with a NNW offshore breeze of 16 mph in the morning, the conditions are clean and lined up. This is the first decent call of the period. It’s still not huge, but that long-period groundswell will have some push to it. The afternoon stays clean, though the wind swings a bit cross-off. Thursday the 6th is a big step up to 7ft from the SW. That’s where we hit the problem. The energy is strong (1476), but this is too big for a beginner spot. The morning has light E cross-shore wind, so it's not messy, but you'd want to know what you're doing out there. Friday the 7th is similar: 7ft from the SSW with strong energy (1823 and 1960). The morning is glassy with zero wind, which is a dream for an expert, but this is firmly in the “experts only” category. The swell direction (SSW) is a bit off the optimum SSE, but the power is there.

The weekend pulls back a little. Saturday the 8th has 5ft in the morning from the SW, with a NW cross-off wind keeping it clean. The energy is moderate (841), so it’s more manageable, and a better option for the average surfer. The afternoon bumps back up to 7ft, which is pushing it again. Then Sunday the 9th turns ugly. Rain showers and a strong S wind at 25 mph in the afternoon, with onshore conditions and a 7ft SSW swell. That’s a complete write-off. The energy is still high (1177), but with that wind, it’s a mess. The start of the next week, Monday the 10th and Tuesday the 11th, is also poor. Fresh cross-onshore winds from the SE/S, lumpy and choppy conditions, and the swell drops off to 3ft. This is a dead period.

Wednesday the 12th is more of the same; poor conditions with a S wind, and the swell down around 3ft. We have a gap of a few days where there’s just nothing worth paddling out for. The surf quality is poor and the winds are all over the place.

The second week shows a glimmer. Thursday the 13th sees the swell jump back up to 6ft from the SW with a long 16-second period, and the energy is back up to strong (1719). However, the wind is light cross-onshore from the SSE, which will put a bit of texture on it, but it’s the most promising day of the week. It’s still on the bigger side for the break, but that long period will make it powerful. Friday the 14th has a similar SW swell at 5ft but with onshore S winds, so it’s less clean. The weekend of the 15th and 16th sees the swell fade out, dropping back to 4ft, with onshore winds trying to ruin the fun.

The long-range call for Monday the 17th is a tiny 3ft SW swell with a NNW offshore breeze, so it’s clean but very weak. The more interesting one is Tuesday the 18th, with 5ft from the SW and a strong NNW cross-offshore wind at 19 mph. That’s promising and should be clean, but being that far out, it’s a “promising but less certain” kind of deal.

So, the standout of the whole period is Wednesday the 5th. It’s the first proper clean window with a solid long-period swell and offshore winds. The size is right, the wind is right, and it’s the best on offer. If you can’t make that, then Thursday the 13th is your next best bet, though you’ll have to deal with a bit of cross-onshore breeze. The rest is a mix of too small, too big, or blown out. That’s the picture from here.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 23°C on Mon afternoon, min 12°C on Wed morning). Winds increasing (calm on Sun night, fresh winds from the NNW by Wed afternoon).

Days 5-7 Weather Summary

Moderate rain (total 12mm), heaviest on Wed night. Very mild (max 17°C on Fri afternoon, min 11°C on Thu night). Wind will be generally light.

Monday
3
Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
1
2
1
0
2
3
1
!
!
1
!
!
!
4
2
!
!
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
SSW
13
0.9
SW
13
1
SW
12
0.9
SW
12
0.8
SW
11
0.8
SW
11
0.6
SSW
15
1.4
SW
16
1.5
SW
15
2.1
SW
14
2.1
SW
13
1.9
SW
12
2.1
SSW
15
2.1
SSW
14
2.2
SSW
14
2
SSW
14
1.6
SW
13
2.1
SW
13
2.1
SW
13
Wave Graph
Metric surfscale
Energy kJ
313
277
301
228
171
137
142
1005
979
1639
1430
1112
1860
1809
1960
1576
841
1408
1471
Wind (km/h)
5
SE
5
N
10
S
5
N
0
NW
5
S
10
N
25
NNW
25
NNW
25
N
5
E
15
S
15
SE
0
NW
10
SW
5
SSW
15
NNW
20
NW
15
N
Wind State
glassy
glassy
on
glassy
glassy
on
off
off
cross-off
off
cross
on
cross-on
glassy
cross-on
glassy
cross-off
cross-off
off
High Tide
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
11:32AM1.10m
11:55PM1.26m
Low Tide
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
5:10AM0.44m
5:36PM0.52m
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
rain showers
light rain
part cloud
clear
clear
clear
part cloud
cloud
part cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:35
7:35
7:35
7:33
7:33
7:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:05
6:06
6:07
6:07
6:07
6:08
6:09
 mm
7
5
5
Temp °C
19
20
23
19
19
21
16
15
17
14
13
14
13
13
17
13
13
15
13
Feels °C
17
19
21
17
18
20
15
10
11
10
12
12
10
12
16
12
10
10
9
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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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