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Surf Forecasts:

Extensions surfForecast / Cape Town / South Africa

information circle48hr Weather and Surf, issued 1 am Thursday 19 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
18.5° C
 (Which is 1.0°C colder than average for this time of year)

How big are the waves at Extensions today?

The current surf forecast for Extensions at 10AM is: 2.2m 14s primary swell from a South-southwest direction and 0.9m 4s secondary swell from a North-northwest direction (forecast issued at 01:00am March 19). An open ocean swell of 0.9m 7s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (SAST) & DateWave HeightWave Period
Morning (19 Mar)7ft (2.2m)14s
Afternoon (19 Mar)7ft (2.2m)14s
Evening (19 Mar)6.5ft (2.0m)14s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Thursday
19
Friday
20
Saturday
21
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)
1
3
3
2
2
0
0
1
2
0
0
0
0
0
0
2
2
3
2
2
1
1
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.5
SSW
1.9
SSW
2.1
SSW
2.2
SSW
2.3
SSW
2.2
SSW
2.1
SSW
2
SSW
2
SSW
2.5
SW
2.5
SSW
2.5
SSW
3
SSW
2.5
SSW
1.5
SSW
2.1
SSW
2.1
SSW
1.9
SSW
1.7
SSW
1.7
SSW
1.7
SSW
1.7
SSW
1.7
SSW
1.7
SSW
Period(s) (?)13161514141414141313131311912121212121212121212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)7111706192520612093190217481556138421112278219617591034595123611771027864864864864878782
Wind
(km/h)
40
ESE
25
E
10
N
15
N
20
NNW
35
NW
35
NNW
30
NNW
20
NW
25
WSW
25
WSW
25
SSW
25
SSW
25
SSW
20
SSW
20
SSW
20
S
20
S
20
SE
20
SE
25
SE
35
SSE
40
SSE
45
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffcrosscrosscrosscross-
on		cross-
on		crosscross-
on		oncross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off
High Tide
/ height (m)
3:22AM
1.70
3:41PM
1.58
3:54AM
1.74
4:15PM
1.58
4:29AM
1.72
4:52PM
1.53
Low Tide
/ height (m)
9:11PM
0.03
9:37AM
-0.03
9:43PM
0.00
10:11AM
-0.06
10:17PM
0.02
10:46AM
-0.03
Thursday
19
Friday
20
Saturday
21
Sunrise---6:48-------6:48-------6:48----
Sunset------6:59-------6:58-------6:55-
cloud
cloud
rain showers
cloud
cloud
part cloud
cloud
part cloud
cloud
rain showers
rain showers
rain showers
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
Rain (mm)
--1------211------------
Temp. °C202019182020201819191919191818181818181817181818
Feels °C (?)151719171816151418161614151314141313131412121110
  • 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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