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Surf Forecasts:

Extensions surfForecast / Cape Town / South Africa

information circle48hr Weather and Surf, issued 1 am Tuesday 17 Feb 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 1.8°C colder than average for this time of year)

How big are the waves at Extensions today?

The current surf forecast for Extensions at 8AM is: 2.1m 16s primary swell from a Southwest direction and 0.4m 19s secondary swell from a West-northwest direction (forecast issued at 01:00am February 17). The wind direction is predicted to be cross-onshore.

Time (SAST) & DateWave HeightWave Period
Morning (17 Feb)7ft (2.1m)16s
Afternoon (17 Feb)7ft (2.2m)15s
Evening (17 Feb)8ft (2.4m)15s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Tuesday
17
Wednesday
18
Thursday
19
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)
3
2
2
2
3
0
2
3
3
3
4
4
4
0
2
2
2
2
2
2
2
2
2
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.3
SW
1.5
SW
1.6
SW
2.1
SW
2.1
SW
2.2
SW
2.3
SW
2.4
SW
2.5
SW
2.3
SW
2.1
SW
2.1
SW
1.9
SW
1.8
SW
2.3
SSW
1.8
SW
1.7
SW
1.7
SW
1.8
SW
1.6
SW
1.4
SW
1.6
SW
1.6
SW
1.6
SW
Period(s) (?)181616161515151515141414131313131313131212141313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)9961187136720801925208323582559256222161779152712661162183011629769611021812570961933905
Wind
(km/h)
15
NW
15
NW
20
NNW
15
NW
10
W
20
WSW
20
SSW
15
SE
20
SE
20
SE
15
SE
10
NE
10
WNW
25
WSW
20
SSW
25
SSE
30
SSE
30
SSE
25
SE
25
SE
25
SE
30
SSE
35
SSE
35
SE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		cross-
on		oncross-
on		cross-
on		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
on		cross-
on		crosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off
High Tide
/ height (m)
3:23AM
1.54
3:32PM
1.51
3:53AM
1.62
4:04PM
1.54
4:23AM
1.67
4:37PM
1.53
Low Tide
/ height (m)
9:13PM
0.09
9:33AM
0.14
9:41PM
0.04
10:04AM
0.07
10:10PM
0.01
10:35AM
0.04
Tuesday
17
Wednesday
18
Thursday
19
Sunrise---6:22-------6:22-------6:22----
Sunset------7:37-------7:36-------7:35-
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
clear
Rain (mm)
------------------------
Temp. °C252220192020212120202020212021212020202020202020
Feels °C (?)232019192019212219192021221721201717171717161615
  • 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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