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Extensions Surf Forecast
/ Cape Town (70 surf breaks) /
Surf Forecasts:
Extensions surfForecast / Cape Town / South Africa
16 Day Weather and Surf, issued 7 pm Sunday 03 May 2026 SASTForecast 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 slightly warmer than usual)Best Forecast Surf Conditions for Extensions this week:
The surf forecast for Extensions over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (May 05) at 2PM. The primary swell is predicted to be 2.5m and 12s period with a secondary swell of 2.2m and 11s. Another secondary swell of 0.9m and 5s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Extensions in the next 16 days are 4.5m 11s and forecast to arrive on Sunday (May 10) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.0m 11s period and expected on Wednesday (May 06) at 11AM.
| Wave Type | Time (SAST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Tue 5th May) | 8ft (2.5m) 12s |
| Best Surf | 2PM (Tue 5th May) | 8ft (2.5m) 12s |
| Most Powerful | 11PM (Sun 10th May) | 15ft (4.5m) 11s |
Table - best surf conditions forecast for Extensions over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 24mm), heaviest during Sun night. Very mild (max 19°C on Sun night, min 14°C on Tue morning). Winds increasing (light winds from the SSE on Tue afternoon, strong winds from the SE by Wed morning). | Days 5-7 Weather SummaryLight rain (total 5mm), mostly falling on Sat afternoon. Very mild (max 17°C on Fri night, min 15°C on Thu night). Winds increasing (light winds from the ENE on Fri night, strong winds from the NNW by Sat afternoon). | ||||||||||||||||||||
Monday 4 | Tuesday 5 | Wednesday 6 | Thursday 7 | Friday 8 | Saturday 9 | Sun 10 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | SSW 12 | S 11 | SW 14 | WSW 14 | WSW 13 | WSW 14 | WSW 13 | WSW 18 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | WSW 14 | SW 13 | WSW 9 | WSW 10 | |
2135 | 2190 | 1815 | 1543 | 1372 | 2315 | 2256 | 412 | 318 | 295 | 437 | 427 | 768 | 1948 | 1763 | 1504 | 722 | 845 | 792 | 1900 | 3604 | |
Wind (km/h) | |||||||||||||||||||||
cross | on | on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | on | cross-on | cross-on | |
High Tide | 4:18AM1.40m | 4:43PM1.33m | 4:49AM1.33m | 5:17PM1.26m | 5:23AM1.24m | 5:55PM1.19m | 6:01AM1.16m | 6:43PM1.12m | 6:50AM1.07m | 7:48PM1.08m | 8:03AM1.01m | 9:09PM1.09m | 9:35AM1.01m | ||||||||
Low Tide | 10:13PM0.28m | 10:33AM0.22m | 10:44PM0.34m | 11:04AM0.28m | 11:17PM0.41m | 11:38AM0.36m | 11:55PM0.49m | 12:18PM0.43m | 00:44AM0.57m | 1:10PM0.50m | 1:57AM0.62m | 2:22PM0.54m | 3:33AM0.61m | 3:46PM0.53m | |||||||
 |  | |  |  | |  | |  | | | |  | | | |  |  | | | | |
 | — | 7:22 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:26 | — | — | 7:26 | — | — | 7:26 | — |
 | 6:02 | — | 6:01 | — | — | 6:00 | — | — | 6:00 | — | — | 5:59 | — | — | 5:58 | — | — | 5:57 | — | — | 5:55 |
14 | 3 | 1 | 5 | — | — | — | 1 | — | — | — | — | — | — | — | — | — | 5 | 19 | 2 | 1 | |
Temp °C | 19 | 17 | 17 | 16 | 15 | 16 | 16 | 17 | 16 | 16 | 16 | 16 | 16 | 15 | 16 | 17 | 16 | 16 | 15 | 15 | 15 |
16 | 12 | 12 | 12 | 11 | 14 | 10 | 11 | 8 | 8 | 11 | 11 | 9 | 10 | 11 | 15 | 12 | 7 | 7 | 7 | 4 | |
Swell 1 Height (m) Direction Period (s) | WSW 13 | SSW 12 | WSW 13 | WSW 12 | WSW 12 | SSW 12 | S 11 | SSE 11 | WSW 14 | WSW 13 | WSW 14 | WSW 13 | WSW 13 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | WSW 14 | WSW 7 | SW 12 | SE 12 |
 kJ | 2135 | 147 | 1815 | 1543 | 1372 | 2315 | 2256 | 1426 | 318 | 295 | 437 | 427 | 378 | 1948 | 1763 | 1504 | 722 | 845 | 414 | 754 | 86 |
Swell 2 Height (m) Direction Period (s) | S 13 | SSW 14 | SSW 12 | SSW 11 | SSW 11 | W 11 | WSW 12 | WSW 11 | WSW 11 | SW 16 | WSW 21 | WSW 20 | WSW 18 | SE 12 | SE 12 | SE 12 | SW 15 | SE 12 | SW 13 | SE 12 | SW 22 |
| kJ | 171 | 62 | 189 | 93 | 624 | 910 | 497 | 285 | 88 | 68 | 43 | 149 | 768 | 260 | 244 | 281 | 355 | 149 | 792 | 132 | 18 |
Swell 3 Height (m) Direction Period (s) | SSE 10 | SE 13 | SE 13 | S 13 | SW 18 | SW 18 | SW 16 | SW 14 | NW 13 | W 13 | S 11 | SSE 12 | S 11 | SSE 17 | SSE 16 | SSE 14 | SE 12 | SE 12 | SE 12 | SW 22 | — |
| kJ | 18 | 7 | 6 | 29 | 50 | 80 | 261 | 412 | 7 | 3 | 2 | 28 | 233 | 113 | 166 | 178 | 248 | 120 | 120 | 19 | — |
Wind waves Height (m) Direction Period (s) | NNW 5 | WSW 13 | — | — | N 4 | — | — | SSE 11 | SSE 11 | SSE 10 | SSE 9 | SSE 8 | SE 4 | SSE 9 | SE 8 | — | — | NW 4 | — | WSW 9 | WSW 10 |
| kJ | 90 | 2190 | — | — | 33 | — | — | 2108 | 1726 | 944 | 421 | 315 | 29 | 221 | 162 | — | — | 58 | — | 1900 | 3604 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 76 | 20 | 3 | 1 | 3 | 12 | 12 | 660 | 226 | 33 | 27 | 187 | 25 | 12 | 12 | 1 | 59 | 315 | 379 | 338 | 417 |
Best forecast wave conditions in Cape Town | |||||||||||||||||||||
Best forecast wave conditions in South Africa | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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.
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 16 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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