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Extensions ratings
Quality on a good day: 2.0
Consistency of Surf: 3.0
Difficulty Level: 3.0
Crowds: 4.0

Overall: 3.2

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Extensions Surf Forecast / Cape Town / South Africa

12 Day Weather and Surf, issued 7 am Wednesday 12 May 2021 SAST
Forecast update in  hr  min  s 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 15.6 °C (Statistics for 12 May 1981-2005 - mean: 17.5 max: 18.7 min: 15.9 °C)
Icon breakBreak
Icon legend buoysLive Wave Height (m)
Icon legend windLive Wind Speed (km/h)
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 15.6 °C (Statistics for 12 May 1981-2005 - mean: 17.5 max: 18.7 min: 15.9 °C)

Eyeball surf reportRecent Eyeball Surf Reports for Cape Town

  1. weather stationWind Update Continuing clean conditions at Extensions (light winds from the NNE at Slangkop 25 km from Extensions).

    Extensions
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25 km away, 2 h 5 min ago

Light
7 km/h
NNE
12.4
15.6
Air / Water (°C)
Please reload the page to see if there are any updates.


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 Wednesday (May 12) at 11AM. The primary swell is predicted to be 2.1m and 13s period with a secondary swell of 1.1m 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 2.2m 13s and forecast to arrive on Wednesday (May 12) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Sunday (May 16) at 11AM.

Wave TypeTime (SAST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Wed 12th May)7ft (2.1m) 13s
Best Surf11AM (Wed 12th May)7ft (2.1m) 13s
Most Powerful 5PM (Wed 12th May)7ft (2.2m) 13s

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

Updates in  hr  min  s Update imminent
Rating
(10 max)
Swell
Height Map
Wave Height (m) & direction (?)
Period(s) (?)
Wave
Graph
(?)Metric surfscale
Energy (?)
Wind
(km/h)
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
High Tide
/ height (m)
Low Tide
/ height (m)
Summary
Rain (mm)
High °C
Low °C
Chill °C (?)
Sunrise
Sunset
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
555212010233323334000100006554555554
T southafrica.htsgw.metric.18.cc23
T southafrica.htsgw.metric.42.cc23
T southafrica.htsgw.metric.66.cc23
T southafrica.htsgw.metric.90.cc23
T southafrica.htsgw.metric.114.cc23
T southafrica.htsgw.metric.138.cc23
T southafrica.htsgw.metric.162.cc23
T southafrica.htsgw.metric.186.cc23
T southafrica.htsgw.metric.210.cc23
T southafrica.htsgw.metric.234.cc23
T southafrica.htsgw.metric.258.cc23
T southafrica.htsgw.metric.282.cc23
2.1
SSW
2.2
SSW
2
SSW
1.7
SSW
1.4
SSW
1.2
SSW
1.6
SSW
1.7
SSW
2
SW
1.7
SSW
1.7
SSW
2.2
S
1.8
S
1.4
SSW
1.5
SSW
1.3
SSW
1.6
SSW
1.8
SSW
1.8
SSW
1.5
SSW
1.6
WSW
1.8
WSW
1.9
WSW
2.1
WSW
2.5
WNW
1.9
SW
4.5
WSW
3
W
2.5
SSW
3
SSW
2.5
SW
2.5
SSW
2.5
SSW
2.3
SSW
2
SSW
1.6
SSW
13131211111113131111111111111010101212111099981211101112121212121211
14201521110672448630578696598169366711287504274323385209138145715205525727051057913417416571517218017391952207115361062617
5
SSW
10
SSE
5
SSE
15
NW
15
WNW
10
N
25
NW
30
NNW
30
NNW
20
SSE
25
SE
30
SE
25
SSE
15
SSE
5
SSE
5
SE
10
SSE
5
ENE
20
NNW
25
NW
25
NW
30
NNW
35
NNW
45
NW
35
WSW
20
W
5
WNW
5
E
15
SSE
25
SE
10
SSE
5
S
5
SSW
5
SE
10
SE
5
NNE
glasscross-
off
glasscross-
on
cross-
on
crosscross-
on
crosscross-
on
crosscross-
off
cross-
off
cross-
off
crosscross-
off
glasscrossglasscross-
on
cross-
on
cross-
on
crosscrosscross-
on
cross-
on
ononglasscross-
off
cross-
off
cross-
off
glassglasscross-
off
cross-
off
glass
3:46PM
1.40
3:51AM
1.46
4:15PM
1.38
4:20AM
1.41
4:46PM
1.33
4:51AM
1.34
5:20PM
1.27
5:24AM
1.27
5:58PM
1.21
6:04AM
1.19
6:47PM
1.15
6:57AM
1.11
7:53PM
1.12
8:13AM
1.06
9:15PM
1.14
9:46AM
1.07
10:32PM
1.22
11:07AM
1.14
11:34PM
1.34
12:09PM
1.25
12:26AM
1.47
1:01PM
1.36
1:14AM
1.58
9:37AM
0.12
9:45PM
0.24
10:06AM
0.15
10:15PM
0.28
10:35AM
0.20
10:46PM
0.33
11:07AM
0.26
11:20PM
0.40
11:42AM
0.33
12:00AM
0.47
12:25PM
0.40
12:53AM
0.54
1:21PM
0.46
2:08AM
0.57
2:37PM
0.49
3:41AM
0.54
4:00PM
0.47
5:00AM
0.44
5:11PM
0.40
6:01AM
0.29
6:09PM
0.30
6:52AM
0.15
7:00PM
0.21

Note: the tide data above is for Black Rocks which is 5 km away. Surf properties and timing are calculated for Extensions.New forecast is published every 6 hours at www.surf-forecast.com. See detailed tide info and graph
Offshore winds at Extensions blow from the E

Wednesday
12
Thursday
13
Friday
14
Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
clear
clear
clear
clear
clear
clear
cloudy
clear
rain showers
heavy rain
heavy rain
light rain
partially cloudy
partially cloudy
partially cloudy
clear
clear
clear
partially cloudy
partially cloudy
partially cloudy
cloudy
cloudy
rain showers
thunderstorm
clear
partially cloudy
clear
clear
partially cloudy
partially cloudy
clear
clear
clear
clear
clear
clearclearclearclearclearclearcloudyclearrain shwrsheavy rainheavy rainlight rainsome cloudssome cloudssome cloudsclearclearclearsome cloudssome cloudssome cloudscloudycloudyrain shwrsrisk thund- derclearsome cloudsclearclearsome cloudssome cloudsclearclearclearclearclear
--------617142-----------84-----------
161616161716181717161415151515151515151616161717161617151515141515151619
161616151716171717151414151415151514141615151616161616151514141415151618
161615151615171616151213131414151515141515141615141517151514131515151619
7:28--7:30--7:31--7:31--7:31--7:33--7:33--7:33--7:35--7:35--7:37--7:37--
-5:54--5:53--5:52--5:52--5:52--5:51--5:50--5:50--5:49--5:47--5:47--5:46-

Short Range Forecast: Light rain (total 6mm), mostly falling on Fri night. Very mild (max 18°C on Fri morning, min 15°C on Thu morning). Winds increasing (calm on Wed morning, fresh winds from the NNW by Fri night).

Days 3-6 Weather Summary Heavy rain (total 33mm), heaviest during Sat morning. Very mild (max 16°C on Sat morning, min 14°C on Sat afternoon). Winds decreasing (fresh winds from the SE on Sat night, calm by Mon night).

Days 6-9 Weather Summary Moderate rain (total 12mm), heaviest on Wed night. Very mild (max 17°C on Wed afternoon, min 14°C on Tue morning). Winds decreasing (strong winds from the WNW on Wed night, light winds from the WSW by Thu night).

Long Range Forecast: Mostly dry. Very mild (max 19°C on Sun night, min 14°C on Fri night). Wind will be generally light.

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.


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.