Extensions surfForecast / Cape Town / South Africa

information circle12 Day Weather and Surf, issued 1 am Wednesday 02 Jul 2025 SAST
Forecast update in hr  min  s Forecast update imminent
Extensions surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Extensions sea temperature is
16.9° C
(Which is slightly warmer than usual)


Best Forecast Surf Conditions for Extensions this week:

The surf forecast for Extensions over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Jul 02) at 5AM. The primary swell is predicted to be 2.5m and 12s period with a secondary swell of 1.4m and 15s. The wind is predicted to be onshore as the swell arrives.

The most powerful waves expected at Extensions in the next 12 days are 4.5m 13s and forecast to arrive on Sunday (Jul 06) at 5AM. 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 7s period and expected on Friday (Jul 04) at 2AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Wed 2nd Jul)8ft (2.5m) 12s
Best Surf 8AM (Wed 2nd Jul)10ft (3.0m) 14s
Most Powerful 5AM (Sun 6th Jul)15ft (4.5m) 13s

Table - best surf conditions forecast for Extensions over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
3
SW
2.5
WSW
2.1
WSW
2.4
WSW
2.5
WSW
2.5
SW
2.1
SW
2.5
WSW
3.5
WSW
4
SW
4
SW
3
SSW
3.5
SSW
3.5
SSW
3
SSW
3
S
3
S
2.5
S
2.1
S
1.8
S
2.4
SW
4
SW
4
SW
2.2
SSW
2.5
WSW
3
SW
4
SW
5
SSW
4.5
SW
4
SW
3
SW
2.5
SW
1.9
SW
2.2
SW
2.3
SW
2.3
SW
Period(s) (?)131212141413131212141314131312141415141414131314131212141414131312121212
Wave
Graph
(?)Metric surfscale
Energy (?)313925592438310928152422165526344092570556336816562560934360443842693434226817372751628453473401273626244255971889335432320122391025123514201427
Wind
(km/h)
5
ENE
15
SE
30
SSE
40
S
45
SW
30
W
50
NNW
60
NNW
10
WNW
20
W
25
W
45
WSW
40
SW
35
SW
20
SW
10
WNW
20
WNW
10
NNW
10
N
10
WNW
20
WNW
15
NW
20
NW
10
NNW
30
NNW
45
NNW
55
WSW
25
SW
20
SSW
20
SE
25
SE
30
SE
35
SE
40
ESE
25
ESE
10
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off
cross-
off
crosscross-
on
oncross-
on
cross-
on
ononononcross-
on
cross-
on
cross-
on
oncross-
on
cross-
on
crossononcross-
on
cross-
on
cross-
on
cross-
on
cross-
on
oncross-
on
cross-
on
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
off
High Tide
/ height (m)
8:10AM
1.06
8:38PM
1.21
9:12AM
1.01
9:35PM
1.16
10:24AM
0.99
10:40PM
1.14
11:36AM
1.02
11:43PM
1.15
12:36PM
1.07
12:40AM
1.19
1:25PM
1.14
1:28AM
1.25
2:07PM
1.22
2:10AM
1.31
2:45PM
1.29
2:49AM
1.37
3:21PM
1.36
3:26AM
1.41
3:57PM
1.42
4:03AM
1.43
4:33PM
1.47
4:39AM
1.43
5:09PM
1.50
Low Tide
/ height (m)
2:07PM
0.49
3:13AM
0.51
3:04PM
0.56
4:19AM
0.52
4:14PM
0.60
5:26AM
0.51
5:30PM
0.60
6:25AM
0.46
6:34PM
0.55
7:15AM
0.40
7:25PM
0.49
7:57AM
0.33
8:09PM
0.42
8:35AM
0.26
8:48PM
0.36
9:10AM
0.20
9:25PM
0.30
9:44AM
0.15
10:02PM
0.26
10:18AM
0.12
10:39PM
0.23
10:52AM
0.11
11:18PM
0.22
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Thursday
10
Friday
11
Saturday
12
Sunday
13
Sunrise7:52--7:52--7:52--7:52--7:52--7:52--7:52--7:52--7:50--7:50--7:50--7:50--
Sunset-5:46--5:46--5:47--5:47--5:49--5:49--5:50--5:50--5:51--5:51--5:52--5:52-
mod rainrain showersrain showerslight rainlight rainrain showerspart cloudlight rainheavy rainlight rainlight rainrain showersrain showersrain showerspart cloudpart cloudclearclearclearclearclearclearclearclearclearclearmod rainpart cloudpart cloudpart cloudclearclearclearclearclearpart cloud
Rain (mm)
624313-13632632------------8---------
Temp. °C141415141415151514141414131313131313111313131414131515131212121213111413
Feels °C (?)1413129696412108744589981010101111875667665287

Short Range Forecast: Heavy rain (total 56mm), heaviest during Fri night. Very mild (max 15°C on Wed night, min 13°C on Fri night). Winds increasing (light winds from the N on Wed morning, near gales from the NNW by Fri afternoon).

Days 3-6 Weather Summary Moderate rain (total 16mm), heaviest on Sat morning. Very mild (max 14°C on Sat morning, min 11°C on Mon night). Winds decreasing (strong winds from the WSW on Sat night, light winds from the WNW by Mon morning).

Days 6-9 Weather Summary Light rain (total 8mm), mostly falling on Thu night. Very mild (max 15°C on Thu afternoon, min 10°C on Tue morning). Winds increasing (calm on Tue afternoon, near gales from the NNW by Thu night).

Long Range Forecast: Mostly dry. Very mild (max 14°C on Sun afternoon, min 11°C on Sat morning). Winds decreasing (strong winds from the ESE on Sun morning, calm by Mon morning).

  • Map Icons:
  • Break
  • 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 Extensions Surf forecast

The above surf forecast table for Extensions provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Extensions can be found by selecting the local surf guide option on the grey menu. Our Extensions 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 (Extensions) 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 Extensions 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.

Are you planning a holiday in Cape Town? If you are looking for accommodation near Extensions, camping, hotels and holiday cottages in Cape Town, consider staying in Cape Town which is 45 km (28 miles) away. Other places in and around Cape Town where you can find information about places to rent, and car hire include Bellville which is 51 km (32 miles) away, Grabouw, Stellenbosch and Kayamnandi.

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