Extensions Surf Break

Lat Long: 34.34° S 18.46° E

Extensions 48 hour detailed Surf Forecast

Issued: 7 pm 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Extensions sea temperature is
14.8° C
0.8° 

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


How big are the waves at Extensions today (12 Aug):

  • Morning surf: Morning surf (12 Aug, local time) - 6ft (1.8m), 19s period with SW swell.
  • Afternoon surf: Afternoon surf (12 Aug, local time) - 6.5ft (2.0m), 18s period with SW swell.
  • Evening surf: Evening surf (12 Aug, local time) - 7ft (2.1m), 17s period with SW swell.

The current surf forecast for Extensions at 1AM is: 1.4m 21s primary swell from a Southwest direction and 1.0m 11s secondary swell from a South-southwest direction (forecast issued at 07:00pm August 11). An open ocean swell of 1.8m 8s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (SAST) & DateWave HeightWave Period
Morning (12 Aug)6ft (1.8m)19s
Afternoon (12 Aug)6.5ft (2.0m)18s
Evening (12 Aug)7ft (2.1m)17s

Table - waves today at Extensions. (Swell directed towards the surf break)


Short Range Forecast

Mostly dry. Warm (max 24°C on Thu afternoon, min 12°C on Tue night). Winds decreasing (near gales from the ESE on Tue night, light winds from the NNW by Thu night).

Tue
11
Wednesday
12
Thursday
13
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
Rating
(10 max)
0
1
2
3
2
3
4
4
4
3
3
5
5
5
5
5
3
3
2
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
SSW
12
1
SW
23
1.3
SW
22
1.6
SW
21
1.7
SW
20
1.8
SW
19
1.9
SW
18
1.9
SW
18
2
SW
17
2.1
SW
17
2
SW
16
1.5
SW
21
1.6
SW
20
2.4
SW
17
2.4
SW
17
2.3
SW
17
2.2
WSW
16
2.1
WSW
16
2.1
WSW
16
Wave Graph
Metric surfscale
Energy kJ
455
1055
1542
2150
2207
2339
2344
2267
2375
2595
2135
1892
1976
3538
3538
3039
2535
2178
2049
Wind (km/h)
55
ESE
55
ESE
40
E
35
E
35
ESE
30
E
20
ENE
10
ESE
10
ESE
35
ESE
35
E
25
E
20
ENE
15
NE
15
NNE
10
NE
10
N
5
NNW
15
NNW
Wind State
off
off
off
off
off
off
off
off
off
off
off
off
off
cross-off
cross-off
cross-off
cross
cross
cross
High Tide
2:32PM1.51m
2:48AM1.53m
3:14PM1.62m
3:30AM1.57m
3:53PM1.68m
Low Tide
8:44PM0.13m
9:02AM0.02m
9:28PM0.05m
9:40AM-0.02m
10:08PM0.02m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:28
7:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:12
6:13
6:14
 mm
Temp °C
16
13
13
12
12
13
13
17
20
20
20
20
20
19
21
24
24
22
21
Feels °C
5
2
5
5
5
7
9
14
17
14
12
14
15
15
17
21
22
20
16
  • 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
How to use the Wavefinder 

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 Extensions 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.


Nearest locationNearest