Extensions Surf Break

Lat Long: 34.34° S 18.46° E

Extensions Surf Forecast and Surf Report

Issued: 7 pm 22 Sep 2026 (local time)

Forecast update in  hr  min

Today's Extensions sea temperature is
14.1°C
1.7° 

Extensions surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Extensions surf forecast from 23 Sep 2026:

  • Best quality surf: Thursday 24 Sep, 11PM (local time) - 6ft (1.9m), 13s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Saturday 26 Sep, 11AM (local time) - 7.5ft (2.3m), 15s period, SW swell with 2,359 kJ wave energy.
  • Next surfable swell (1★+): Thursday 24 Sep, 8AM (local time) - 3ft (0.9m), 16s period with SSW swell.

Best Forecast Surf Conditions for Extensions this week:

The surf forecast for Extensions over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Sep 24) at 8AM. The primary swell is predicted to be 0.9m and 16s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Extensions in the next 16 days are 2.3m 15s and forecast to arrive on Saturday (Sep 26) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 7s period and expected on Sunday (Sep 27) at 11PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Thu 24th Sep)3ft (0.9m) 16s
Best Surf11PM (Thu 24th Sep)6ft (1.9m) 13s
Most Powerful11AM (Sat 26th Sep)7.5ft (2.3m) 15s

Table - best surf conditions forecast for Extensions over the next 16 days.


Short Range Forecast

Light rain (total 3mm), mostly falling on Wed morning. Warm (max 23°C on Fri morning, min 15°C on Tue night). Winds decreasing (strong winds from the SE on Wed night, calm by Thu night).

Days 5-7 Weather Summary

Heavy rain (total 22mm), heaviest during Fri night. Warm (max 21°C on Fri night, min 13°C on Sun night). Winds increasing (light winds from the ESE on Fri night, near gales from the SE by Mon afternoon).

Wednesday
23
Thursday
24
Friday
25
Saturday
26
Sunday
27
Monday
28
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
0
0
3
3
4
2
2
4
1
0
4
2
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)
1.3
SW
11
1.1
SW
11
0.9
SW
11
0.7
SW
10
1.3
SSW
16
1.9
SSW
14
1.9
SSW
13
1.7
SW
12
1.6
SW
12
1.1
SW
16
2.3
SW
15
2.3
SW
14
2.4
SW
14
1.9
WSW
14
2.1
SW
13
1.3
WSW
13
1.2
WSW
13
1
WSW
12
0.9
WSW
12
Wave Graph
Metric surfscale
Energy kJ
414
254
187
100
806
1422
1126
822
683
568
2359
2232
2166
1310
1438
615
437
309
243
Wind (km/h)
10
W
5
SW
20
SE
30
ESE
15
ESE
20
SE
10
SE
15
NE
20
SE
15
E
25
NNW
35
NW
10
W
25
SE
40
SE
50
SE
50
ESE
60
SE
50
ESE
Wind State
on
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross
cross-on
on
cross-off
cross-off
cross-off
cross-off
cross-off
off
High Tide
1:12AM1.22m
1:33PM1.34m
1:44AM1.33m
2:01PM1.47m
2:15AM1.43m
2:29PM1.57m
2:46AM1.50m
2:59PM1.65m
3:18AM1.54m
3:30PM1.69m
3:51AM1.55m
4:03PM1.68m
4:25AM1.51m
Low Tide
7:23AM0.33m
7:47PM0.30m
7:52AM0.23m
8:15PM0.18m
8:20AM0.14m
8:44PM0.08m
8:49AM0.08m
9:14PM0.01m
9:19AM0.05m
9:46PM-0.02m
9:52AM0.05m
10:19PM-0.00m
rain showers
rain showers
part cloud
part cloud
cloud
part cloud
part cloud
cloud
part cloud
rain showers
mod rain
part cloud
light rain
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:35
6:33
6:31
6:30
6:28
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:42
6:42
6:43
6:44
6:45
6:45
6:45
 mm
1
2
10
9
3
Temp °C
21
15
16
18
19
20
21
23
19
21
16
18
16
15
15
14
15
15
14
Feels °C
22
14
14
14
19
19
21
20
18
21
13
14
13
11
10
6
6
5
3
  • 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 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 16 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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