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Surf Forecasts:

Extensions surfForecast / Cape Town / South Africa

information circle48hr Weather and Surf, issued 7 am Thursday 12 Mar 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
18.2° C
 (Which is 1.4°C colder than average for this time of year)

How big are the waves at Extensions today?

The current surf forecast for Extensions at 3PM is: 1.1m 12s primary swell from a Southwest direction and 0.9m 13s secondary swell from a South-southwest direction (forecast issued at 07:00am March 12). The wind direction is predicted to be cross-shore.

Time (SAST) & DateWave HeightWave Period
Morning (12 Mar)3.5ft (1.0m)13s
Afternoon (12 Mar)3.5ft (1.1m)12s
Evening (12 Mar)3ft (0.9m)12s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Thursday
12
Friday
13
Saturday
14
Sun
15
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)
2
2
1
1
1
2
2
1
1
2
2
3
3
2
2
2
1
1
1
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.1
SW
1
SSW
1.1
SW
0.9
SSW
1.2
SW
0.9
SW
0.9
SW
1.2
SW
0.9
WSW
0.7
WSW
1.1
WSW
1.3
WSW
1.9
WSW
2.1
WSW
2.1
WSW
2.1
WSW
2.1
WSW
1.9
WSW
1.8
WSW
1.7
WSW
1.5
WSW
1.3
WSW
1.2
WSW
1
WSW
Period(s) (?)121313131212121213191817161616151414131313121212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)3743423632614162122054033043517519321811216422001847179714841110972722466384289
Wind
(km/h)
10
SSW
10
S
15
SW
10
S
10
SSW
10
SE
15
SSE
15
SSE
15
SSE
20
SSE
20
S
20
SSE
20
SSE
25
SSE
30
SSE
35
SSE
40
SSE
40
SE
45
SE
50
SE
55
SE
55
SE
45
SE
40
ESE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscross-
on		crosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscross-
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
High Tide
/ height (m)
9:28AM
0.93
11:35PM
0.93
11:50AM
0.99
12:45AM
1.06
12:49PM
1.11
1:21AM
1.21
Low Tide
/ height (m)
4:55PM
0.67
5:55AM
0.70
6:30PM
0.56
6:56AM
0.57
7:10PM
0.43
Thursday
12
Friday
13
Saturday
14
Sun
15
Sunrise-6:41-------6:43-------6:43------
Sunset----7:08-------7:07-------7:06---
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
------------------------
Temp. °C292825252422232221212121212020191919191920202020
Feels °C (?)282723252523232220202021201917161514131212121315
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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