Snow-ForecastSnow-ForecastMountain-ForecastMountain-ForecastTide-ForecastTide-ForecastWeather-ForecastWeather-Forecast
Search by country, region, or break
Search by country, region, or break

Quick Links

Surf Forecasts:

Extensions surfForecast / Cape Town / South Africa

information circle48hr Weather and Surf, issued 1 am Monday 12 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 7AM is: 2.1m 15s primary swell from a Southwest direction and 1.3m 11s secondary swell from a Southwest direction (forecast issued at 01:00am January 12). An open ocean swell of 0.9m 5s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (SAST) & DateWave HeightWave Period
Morning (12 Jan)7ft (2.2m)15s
Afternoon (12 Jan)7.5ft (2.3m)14s
Evening (12 Jan)6.5ft (2.0m)13s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Monday
12
Tuesday
13
Wednesday
14
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
2
3
2
3
2
2
3
3
2
3
2
2
1
1
2
2
2
3
3
1
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.6
SW
1.9
SW
2.1
SW
2.1
SW
2.4
SW
2.3
SW
2.2
SW
2
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
1.7
SW
1.6
SW
1.6
SW
1.6
SW
1.6
SW
2.5
SW
3
SW
Period(s) (?)181616151414131313121212121211111111111111111615
Wave
Graph
(?)Metric surfscale
Energy kJ (?)15711988214619412383186416431319122097088488479281283682170170165066265065033533398
Wind
(km/h)
40
SE
30
SSE
20
SSE
20
S
15
SSE
20
S
25
S
20
SSE
20
SSE
20
SSE
15
SSE
15
S
15
SSW
20
SSW
20
SSW
20
S
20
SE
20
SE
15
SSE
0
SE
15
W
30
WNW
30
WNW
25
NNW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		cross-
off		cross-
off		crosscross-
off		crosscrosscross-
off		cross-
off		cross-
off		cross-
off		crosscross-
on		cross-
on		crosscross-
off		cross-
off		cross-
off		cross-
off		glassononcross-
on		cross-
on
High Tide
/ height (m)
9:50PM
0.96
10:13AM
1.09
11:22PM
0.97
11:33AM
1.09
12:36AM
1.03
12:39PM
1.14
Low Tide
/ height (m)
3:39AM
0.63
5:10PM
0.56
5:17AM
0.65
6:24PM
0.51
6:36AM
0.60
7:17PM
0.44
Monday
12
Tuesday
13
Wednesday
14
Sunrise---5:46-------5:47-------5:48----
Sunset-------8:00-------8:00-------8:00
part cloud
part cloud
part cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
------------------------
Temp. °C202021212020202019191919201920191919191920212121
Feels °C (?)161820202019181917171919201718171717182118171819
  • 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

Latest Updates

The World’s Most Inconsistent Waves
Ben Mondy

The World’s Most Inconsistent Waves

Huntington, Dribbleton, Virginia, Holland and the Superbank! We recently had a look at the world’s most consistent waves. This was based on the combination of swells and wind directed at 7,000 surf spots, as compiled from our data since 2006. Those stats, represented in easy-to-read graphics, are located under each wave’s spot guides, with historical swell and wind breakdowns available by month, season, and year. There is also an offshore filter, which shows how often the swells come with clean

Read more

Read more

Discover more articles and updates in the Greenroom.

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

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest