Extensions surfForecast / Cape Town / South Africa

information circle48hr Weather and Surf, issued 7 pm Tuesday 28 Apr 2026 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
18.4° C
(Which is slightly warmer than usual)

How big are the waves at Extensions today?

The current surf forecast for Extensions at 12AM is: 1.3m 10s primary swell from a Southwest direction (forecast issued at 07:00pm April 28). An open ocean swell of 2.1m 12s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (SAST) & DateWave HeightWave Period
Morning (29 Apr)3.5ft (1.1m)9s
Afternoon (29 Apr)2.5ft (0.8m)14s
Evening (29 Apr)4.5ft (1.3m)13s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Very mild (max 17°C on Fri afternoon, min 15°C on Tue night). Winds increasing (light winds from the W on Thu night, strong winds from the NNW by Fri afternoon).

Tue
28
Wednesday
29
Thursday
30
Fri
1
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
2 AM
5 AM
8 AM
11 AM
2 PM
Rating
(10 max)
0
1
1
0
0
0
1
0
0
0
0
1
1
1
1
3
3
3
4
3
0
1
0
0
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
1.3
SW
10
1.3
SW
10
1.3
SW
10
1.2
SW
9
1.2
SW
10
1.1
SW
9
1
SW
9
0.8
SW
14
1.4
SW
13
1.3
SW
13
1.3
SW
13
1.1
SW
10
1.1
SW
11
1.3
SW
12
1.2
SSW
14
2.4
SSW
17
3
SSW
16
3
SSW
15
3
SSW
14
3
SSW
14
2.5
SW
13
2.5
SW
13
2.5
SW
13
2.5
SW
12
Wave Graph
Metric surfscale
Energy kJ
341
341
341
251
268
225
170
221
585
511
543
211
308
463
585
3388
4340
4209
3613
3035
2459
2345
2140
1884
Wind (km/h)
25
SSE
25
SE
25
SE
25
SE
30
SE
25
ESE
25
SE
30
SE
35
SSE
35
SE
35
SE
30
SE
35
SE
30
SE
25
SSE
25
S
15
S
15
SW
15
W
15
NW
25
NNW
30
NNW
40
NNW
45
NNW
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-on
on
cross-on
cross-on
cross
cross
cross-on
High Tide
1:46AM1.47m
2:12PM1.37m
2:17AM1.51m
2:43PM1.40m
2:47AM1.51m
Low Tide
7:39PM0.28m
8:09AM0.15m
8:13PM0.24m
8:39AM0.12m
8:44PM0.22m
9:07AM0.11m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:18
7:20
7:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:07
6:07
6:06
6:05
Temp °C
16
16
16
16
15
15
15
16
16
16
16
15
15
15
15
16
16
16
16
16
16
15
16
17
10
11
11
11
9
10
10
10
9
9
9
9
9
9
10
12
13
13
14
13
12
9
8
8
Swell 1
Height (m)
Direction
Period (s)
2.2
SSE
11
2.2
SSE
11
2.1
SSE
12
2
SSE
12
2
SSE
12
1.9
SSE
12
2.1
SSE
11
1.9
SSE
13
1.8
SSE
13
1.3
SW
13
1.7
SSE
13
1.1
SW
10
1.1
SW
11
1.3
SSE
12
1.2
SSW
14
2.4
SSW
17
3
SSW
16
3
SSW
15
3
SSW
14
3
SSW
14
2.5
SW
13
2.5
SW
13
2.5
SW
13
2.5
SW
12
Energy kJ
1146
1167
1211
1084
1100
950
1124
1180
1103
511
880
211
308
443
585
3388
4340
4209
3613
3035
2459
2345
2140
1884
Swell 2
Height (m)
Direction
Period (s)
1.3
SW
10
1.3
SW
10
1.3
SW
10
1.2
SW
9
1.2
SW
10
1.1
SW
9
1
SW
9
1.1
SW
9
1.4
SW
13
0.4
SSW
16
1.3
SW
13
0.8
SW
13
0.6
SSW
15
1.3
SW
12
1.1
SSE
12
1
SSE
12
0.9
SSE
12
0.7
SE
12
0.6
SSE
11
0.5
SE
11
0.4
SSE
11
0.4
SE
11
0.3
SE
11
0.2
SSE
10
Energy kJ
341
341
341
251
268
225
170
188
585
102
543
202
152
463
347
289
211
135
85
59
47
30
18
10
Swell 3
Height (m)
Direction
Period (s)
0.8
SSW
10
0.4
S
12
0.4
SSW
11
0.4
S
11
0.4
SW
15
0.6
SW
14
0.6
SW
14
0.8
SW
14
0.2
S
10
0.2
S
10
0.4
SSW
16
0.5
SW
16
0.5
SW
13
0.6
SW
15
1
SW
12
Energy kJ
109
46
41
38
78
130
162
221
8
8
103
125
84
176
268
Wind waves
Height (m)
Direction
Period (s)
0.7
SE
4
0.9
SE
4
0.9
SSE
4
2.1
SSE
13
1.2
SE
5
2
SSE
12
1.8
SSE
12
1
SE
5
0.9
SE
4
0.7
SSE
4
0.9
NW
4
1.3
NW
5
Energy kJ
16
26
34
1442
73
1173
984
41
27
13
28
74
Nearest Offshore or Glassy
Rating
(10 max)
4
4
4
4
2
2
4
4
5
3
3
4
2
2
3
4
4
4
5
5
4
4
4
4
Distance (km)
34
27
12
27
25
25
12
27
400
37
33
30
33
33
34
26
26
3
1
1
1
35
167
167
Best forecast wave conditions in Cape Town
Rating
(10 max)
4
4
4
4
4
4
4
4
4
4
4
3
4
4
5
5
5
4
4
Best forecast wave conditions in South Africa
Rating
(10 max)
4
4
5
9
8
9
8
5
5
5
5
4
4
4
4
4
6
6
5
6
5
5
4
4
Header Global
Rating
(10 max)
5
5
8
9
9
9
8
8
7
7
6
5
5
5
5
4
6
6
6
6
7
7
5
5
  • 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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