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Surf Forecasts:

Extensions surfForecast / Cape Town / South Africa

information circle48hr Weather and Surf, issued 7 am Sunday 11 Jan 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
20.8° C
 (Which is slightly warmer than usual)

How big are the waves at Extensions today?

The current surf forecast for Extensions at 2PM is: 1.3m 12s primary swell from a Southwest direction and 0.4m 22s secondary swell from a South-southwest direction (forecast issued at 07:00am January 11). An open ocean swell of 1.6m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (SAST) & DateWave HeightWave Period
Morning (11 Jan)4.5ft (1.4m)12s
Afternoon (11 Jan)4.5ft (1.3m)12s
Evening (11 Jan)4ft (1.2m)20s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Sunday
11
Monday
12
Tuesday
13
Wed
14
5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM
Rating
(10 max)
0
0
1
0
1
1
1
1
2
2
2
2
1
2
2
1
2
2
2
1
1
2
3
3
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.4
SW
1.4
SW
1.4
SW
1.3
SW
0.9
SW
1.2
SW
1.6
SW
1.9
SW
2.1
SW
2.1
SW
2.3
SW
2.2
SW
2.1
SW
2
SW
1.9
SW
1.8
SW
1.8
SW
1.7
SW
1.6
SW
1.7
SW
1.8
SW
1.7
SW
1.7
SW
1.6
SW
Period(s) (?)121212122120181616151414131313121212121211111111
Wave
Graph
(?)Metric surfscale
Energy kJ (?)5905905614946401111157119882146194120901744153713191136899954800723752770701701650
Wind
(km/h)
40
ESE
35
ESE
35
SE
40
SSE
40
SSE
45
SSE
45
SE
35
SE
25
SSE
20
S
20
S
20
S
25
S
25
SSE
25
SSE
25
SE
20
SE
15
S
10
S
15
SSW
15
SW
10
S
10
ESE
0
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscrosscrosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscross-
on		cross-
on		crosscross-
off		glass
High Tide
/ height (m)
9:00AM
1.15
9:50PM
0.96
10:13AM
1.09
11:22PM
0.97
11:33AM
1.09
12:36AM
1.03
Low Tide
/ height (m)
3:45PM
0.55
3:39AM
0.63
5:10PM
0.56
5:17AM
0.65
6:24PM
0.51
Sunday
11
Monday
12
Tuesday
13
Wed
14
Sunrise-5:45-------5:46-------5:47------
Sunset-----8:00-------8:00-------8:00--
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
------------------------
Temp. °C202122212121202021212020202020191919202021212020
Feels °C (?)151719171717151720201818181718161718201921222123
  • 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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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.

View detailed surf forecast for Extensions at:
surf-forecast.com

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