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Surf Forecasts:

Extensions surfForecast / Cape Town / South Africa

information circle12 Day Weather and Surf, issued 7 pm Thursday 05 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 1.5°C colder than average for this time of year)

Best Forecast Surf Conditions for Extensions this week:

The surf forecast for Extensions over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Mar 06) at 2AM. The primary swell is predicted to be 1.6m and 11s period with a secondary swell of 1.4m and 11s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Extensions in the next 12 days are 4.0m 11s and forecast to arrive on Saturday (Mar 07) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 8s period and expected on Sunday (Mar 08) at 8PM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Fri 6th Mar)5ft (1.6m) 11s
Best Surf 2AM (Fri 6th Mar)5ft (1.6m) 11s
Most Powerful 8AM (Sat 7th Mar)13ft (4.0m) 11s

Table - best surf conditions forecast for Extensions over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
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Short Range Forecast Light rain (total 3mm), mostly falling on Fri afternoon. Warm (max 21°C on Sun afternoon, min 15°C on Sat night). Winds increasing (calm on Thu night, near gales from the SE by Sun afternoon).

Days 3-6 Weather Summary Mostly dry. Warm (max 31°C on Wed morning, min 16°C on Mon morning). Winds decreasing (near gales from the ESE on Sun night, light winds from the E by Wed morning).

Friday
06
Saturday
07
Sunday
08
Monday
09
Tuesday
10
Wednesday
11
Thu
12
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
4
0
0
0
3
3
0
1
0
0
0
0
0
0
0
2
2
2
1
1
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.6
SW
1.6
SW
1.7
WSW
3
SSW
2.5
S
3.5
SSW
2.5
SW
2.2
SSW
2
SSW
1.6
SSW
1.4
SSW
1.3
SSW
1.1
SSW
1
SSW
0.9
SW
0.7
SW
0.7
SW
0.8
SW
0.9
SW
0.9
SW
0.8
SW
Period(s) (?)11111181211121212121212111111151313121212
Wave
Graph
(?)Metric surfscale
Energy kJ (?)579543637124819342947193614741197734560467302234176209176246248244203
Wind
(km/h)
5
SSE
30
NNW
30
W
45
SSW
35
SSE
45
SE
55
ESE
40
ESE
55
SE
50
ESE
40
ESE
55
SE
45
ESE
25
ESE
25
SE
15
ESE
10
SE
10
E
10
S
15
S
20
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscrossoncross-
on		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		offcross-
off		cross-
off		offcross-
off		cross-
off		offcross-
off		offcrosscrosscross-
off
High Tide
/ height (m)
4:48AM
1.60
5:04PM
1.43
5:16AM
1.51
5:32PM
1.34
5:43AM
1.40
6:00PM
1.24
6:11AM
1.28
6:31PM
1.12
6:43AM
1.15
7:10PM
1.01
7:29AM
1.02
8:37PM
0.90
9:28AM
0.93
Low Tide
/ height (m)
10:38PM
0.09
11:03AM
0.11
11:05PM
0.17
11:30AM
0.19
11:31PM
0.27
11:57AM
0.29
11:57PM
0.38
12:25PM
0.41
12:25AM
0.49
12:59PM
0.53
1:01AM
0.61
2:00PM
0.64
2:25AM
0.73
4:55PM
0.67
Friday
06
Saturday
07
Sunday
08
Monday
09
Tuesday
10
Wednesday
11
Thu
12
Sunrise-6:37--6:37--6:39--6:39--6:39--6:41--6:41-
Sunset--7:16--7:15--7:14--7:13--7:10--7:09--7:08
clear
clear
rain showers
rain showers
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
Rain (mm)
--12-----------------
Temp. °C201920191616171821192023212430303127282121
Feels °C (?)20151513887101391414122026262925282221
  • 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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Quick surf report for Extensions:

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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

Information about the Extensions Surf forecast

The above surf forecast table for Extensions provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Extensions can be found by selecting the local surf guide option on the grey menu. Our Extensions surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Extensions) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Extensions may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Are you planning a holiday in Cape Town? If you are looking for accommodation near Extensions, camping, hotels and holiday cottages in Cape Town, consider staying in Cape Town which is 45 km (28 miles) away. Other places in and around Cape Town where you can find information about places to rent, and car hire include Bellville which is 51 km (32 miles) away, Grabouw, Stellenbosch and Kayamnandi.

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