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Extensions Surf Forecast
/ Cape Town (70 surf breaks) /
Surf Forecasts:
Extensions surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 1 pm Tuesday 12 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
17.5° C
(Which is normal for this time of year)How big are the waves at Extensions today?
The current surf forecast for Extensions at 7PM is: 3.0m 12s primary swell from a West direction and 3.0m 12s secondary swell from a South-southwest direction, 2.2m 12s secondary swell from a West direction (forecast issued at 01:00pm May 12). The wind direction is predicted to be onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 May) | 13ft (4.0m) | 12s |
| Afternoon (12 May) | 10ft (3.0m) | 13s |
| Evening (12 May) | 10ft (3.0m) | 12s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 17°C on Tue afternoon, min 14°C on Wed night). Winds decreasing (fresh winds from the W on Tue night, calm by Thu morning). | ||||||||||||||||||||||||
Tue 12 | Wednesday 13 | Thursday 14 | Fri 15 | |||||||||||||||||||||
11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WNW 12 | SW 13 | SW 13 | W 12 | SW 12 | SSW 12 | SSW 12 | SW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | WSW 13 | SSW 11 | S 14 | S 14 | S 14 | |
4258 | 3684 | 3049 | 2751 | 2483 | 2440 | 2587 | 5234 | 3149 | 3283 | 3026 | 2620 | 2383 | 2176 | 1946 | 1609 | 1348 | 942 | 823 | 710 | 615 | 649 | 1143 | 1887 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | on | on | on | on | cross-on | on | on | on | on | on | on | glassy | glassy | on | on | cross-on | cross-on | on | cross-on | cross-off | |
High Tide | 11:55AM1.17m | 00:11AM1.39m | 12:45PM1.29m | 00:56AM1.50m | 1:30PM1.39m | 1:40AM1.60m | ||||||||||||||||||
Low Tide | 5:54PM0.39m | 6:39AM0.25m | 6:43PM0.30m | 7:22AM0.12m | 7:29PM0.21m | |||||||||||||||||||
 |  |  |  |  |  | | | | | | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 7:30 | — | — | — | — | — | — | — | 7:31 | — | — | — | — | — | — | — | 7:31 | — |
 | — | — | 5:54 | — | — | — | — | — | — | — | 5:53 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | 5:52 |
2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 17 | 17 | 17 | 17 | 16 | 15 | 15 | 15 | 16 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 15 | 15 | 16 | 16 | 16 | 16 | 16 |
12 | 11 | 12 | 11 | 9 | 7 | 8 | 8 | 10 | 10 | 12 | 12 | 13 | 12 | 12 | 12 | 13 | 14 | 13 | 14 | 15 | 16 | 17 | 15 | |
Swell 1 Height (m) Direction Period (s) | W 12 | SW 13 | SW 13 | W 12 | SW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SSW 10 | SW 11 | S 14 |
 kJ | 3708 | 3684 | 3049 | 2751 | 2483 | 2440 | 2587 | 2986 | 3149 | 3283 | 3026 | 2620 | 2383 | 2176 | 1946 | 1609 | 1348 | 942 | 823 | 656 | 615 | 554 | 652 | 1887 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | W 12 | W 12 | SSW 12 | — | — | — | W 12 | W 12 | W 11 | W 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 12 | WSW 12 | WSW 13 | WSW 13 | S 14 | S 14 | SW 11 |
| kJ | 3214 | 2386 | 2338 | 2338 | — | — | — | 1947 | 1644 | 1509 | 1274 | 1187 | 911 | 916 | 745 | 745 | 704 | 797 | 742 | 710 | 594 | 649 | 1143 | 496 |
Swell 3 Height (m) Direction Period (s) | NNW 9 | — | NW 9 | — | — | — | — | SE 12 | SE 11 | SE 11 | — | — | — | SW 20 | SW 19 | WSW 19 | SW 18 | WSW 18 | WSW 17 | WSW 16 | WSW 16 | WSW 13 | WSW 12 | WSW 15 |
| kJ | 422 | — | 323 | — | — | — | — | 5 | 5 | 4 | — | — | — | 15 | 15 | 37 | 81 | 123 | 119 | 232 | 402 | 433 | 350 | 566 |
Wind waves Height (m) Direction Period (s) | WNW 12 | NW 10 | — | W 12 | W 12 | W 12 | W 12 | SW 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 4258 | 614 | — | 1355 | 2457 | 2418 | 2229 | 5234 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 20 | 417 | 23 | 30 | 187 | 187 | 187 | 187 | 187 | 5 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 5 | 0 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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