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Surf Forecasts:

Extensions surfForecast / Cape Town / South Africa

information circle48hr Weather and Surf, issued 1 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 8AM is: 1.4m 12s primary swell from a Southwest direction and 0.3m 10s secondary swell from a West-southwest direction (forecast issued at 01:00am January 11). An open ocean swell of 1.8m 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
11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM
Rating
(10 max)
0
0
0
1
1
0
1
1
1
2
3
2
2
1
1
2
2
2
2
2
2
2
1
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.4
SW
1.4
SW
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
2.3
SW
2.1
SW
2
SW
1.8
SW
1.8
SW
1.8
SW
1.7
SW
1.8
SW
1.8
SW
1.8
SW
1.7
SW
Period(s) (?)131212121212212018161615141413131312121212121111
Wave
Graph
(?)Metric surfscale
Energy kJ (?)6796175905905614946401111157119882146194120901991153713191052899884800855812770701
Wind
(km/h)
45
SE
45
SE
40
SE
35
ESE
35
SE
40
SSE
40
SSE
45
SSE
45
SE
35
SE
20
SSE
20
S
20
S
25
S
25
S
25
SSE
25
SSE
25
SE
20
SSE
15
S
15
S
15
SSW
20
S
15
SSE
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		cross-
off		cross-
off		crosscrosscrosscrosscross-
off		cross-
off		cross-
off		cross-
off		crosscrosscrosscrosscross-
off
High Tide
/ height (m)
8:33PM
1.01
9:00AM
1.15
9:50PM
0.96
10:13AM
1.09
11:22PM
0.97
11:33AM
1.09
Low Tide
/ height (m)
2:25AM
0.56
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
Sunrise---5:45-------5:46-------5:47----
Sunset-------8:00-------8:00-------8:00
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
Rain (mm)
------------------------
Temp. °C202020212122212121212121202020202019191920202120
Feels °C (?)141515171718171616192121191818181817171920192019
  • 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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