Nine Mile Reef surfForecast / Cape Town / South Africa

information circle12 Day Weather and Surf, issued 7 am Thursday 18 Sep 2025 SAST
Forecast update in hr  min  s Forecast update imminent
Nine Mile Reef surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Nine Mile Reef sea temperature is
16.0° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Nine Mile Reef this week:

The surf forecast for Nine Mile Reef over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 19) at 11AM. The primary swell is predicted to be 1.6m and 12s period with a secondary swell of 1.4m and 5s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Nine Mile Reef in the next 12 days are 2.0m 14s and forecast to arrive on Wednesday (Sep 24) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Saturday (Sep 20) at 2PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Fri 19th Sep)5ft (1.6m) 12s
Best Surf11AM (Fri 19th Sep)5ft (1.6m) 12s
Most Powerful 8PM (Wed 24th Sep)6.5ft (2.0m) 14s

Table - best surf conditions forecast for Nine Mile Reef over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 21°C on Fri afternoon, min 12°C on Thu night). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Sun night. Very mild (max 18°C on Sun afternoon, min 12°C on Sun night). Wind will be generally light.

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
2
0
1
3
1
2
1
2
2
1
0
1
1
0
0
0
0
0
0
0
1
Swell
Height Map
Wave Height (m) & direction (?)
1.7
SSW
1.7
S
1.7
S
1.6
S
0.9
S
0.9
SSE
1
SSE
0.9
SSE
0.7
SSE
0.7
SSE
0.6
SSE
0.5
SSE
0.4
SSE
0.6
S
0.4
SW
0.5
SW
0.4
SW
0.9
SW
1.3
SW
1.6
SW
1.7
SSW
Period(s) (?)111112121210121312121211111012121916141413
Wave
Graph
(?)Metric surfscale
Energy kJ (?)7246957606752281463182941551451076944773869126376667965987
Wind
(km/h)
5
SSW
20
S
10
ESE
5
SSE
5
S
15
N
25
NNW
15
WNW
5
SSE
5
NW
10
SSW
15
N
5
WNW
15
S
5
SSE
10
WSW
25
S
25
SSE
20
SSE
30
S
15
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
ononcross-
on
glassonoffcross-
off
cross-
off
glassglassonoffcross-
off
oncross-
on
crossoncross-
on
cross-
on
oncross-
on
High Tide
/ height (m)
1:32PM
1.38
1:48AM
1.35
2:07PM
1.48
2:22AM
1.43
2:37PM
1.56
2:52AM
1.48
3:05PM
1.61
3:21AM
1.50
3:32PM
1.62
3:48AM
1.49
3:58PM
1.60
4:15AM
1.46
4:24PM
1.54
4:42AM
1.40
Low Tide
/ height (m)
7:49PM
0.28
7:58AM
0.22
8:23PM
0.18
8:29AM
0.15
8:53PM
0.12
8:57AM
0.12
9:21PM
0.08
9:24AM
0.11
9:47PM
0.08
9:50AM
0.13
10:13PM
0.10
10:16AM
0.17
10:38PM
0.16
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Sunrise6:41--6:39--6:37--6:37--6:35--6:33--6:31--
Sunset-6:37--6:38--6:38--6:39--6:40--6:42--6:42-
clear
part cloud
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
clear
rain showers
part cloud
clear
clear
part cloud
light rain
clear
clear
clear
clear
Rain (mm)
-----------1----1----
Temp. °C151514182120181815171815141614151514141512
Feels °C (?)13111117191914131416161413141113118997
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for Cape Town

  1. weather stationWind Update Continuing clean conditions at Nine Mile Reef (calm at Somerset West 14 km from Nine Mile Reef). 2.3m 11s groundswell from the SSW with a 0.7m 14s groundswell from the S. 2 swells combining so expect closeout sets.

    Nine Mile Reef
Expand
<
>
View all

Actual: 41 min ago

0 km/h
NE
Clean
Please reload the page to see if there are any updates.

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Nine Mile Reef surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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 12 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.

Nearest
Nearest
Nearest