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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 am Wednesday 13 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 7AM is: 3.0m 12s primary swell from a South-southwest direction and 2.5m 12s secondary swell from a West direction (forecast issued at 01:00am May 13). The wind direction is predicted to be onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 May) | 11ft (3.5m) | 12s |
| Afternoon (13 May) | 11ft (3.5m) | 12s |
| Evening (13 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 Thu night, min 14°C on Wed night). Winds decreasing (fresh winds from the WSW on Wed morning, calm by Thu morning). | ||||||||||||||||||||||||
Wednesday 13 | Thursday 14 | Friday 15 | ||||||||||||||||||||||
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 | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SSW 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 | WSW 13 | WSW 13 | S 15 | S 14 | S 14 | S 14 | S 14 | S 14 | SW 14 | SW 14 | |
2590 | 2739 | 3202 | 3374 | 3859 | 3461 | 3095 | 2577 | 2343 | 2013 | 1814 | 1465 | 1065 | 823 | 710 | 594 | 716 | 1317 | 1941 | 2487 | 2452 | 2217 | 2967 | 2764 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | cross-on | on | on | on | on | on | on | on | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 00:11AM1.39m | 12:45PM1.29m | 00:56AM1.50m | 1:30PM1.39m | 1:40AM1.60m | 2:14PM1.48m | ||||||||||||||||||
Low Tide | 6:39AM0.25m | 6:43PM0.30m | 7:22AM0.12m | 7:29PM0.21m | 8:05AM0.02m | 8:14PM0.14m | ||||||||||||||||||
 | |  |  | | |  |  | | |  | | | | | | | | | | | | | | |
 | — | 7:30 | — | — | — | — | — | — | — | 7:31 | — | — | — | — | — | — | — | 7:31 | — | — | — | — | — | — |
 | — | — | — | — | — | 5:53 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 15 | 15 | 15 | 16 | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 16 | 16 | 16 | 17 | 16 | 16 | 16 | 16 | 17 | 17 | 16 |
7 | 7 | 8 | 10 | 10 | 11 | 12 | 13 | 12 | 12 | 13 | 13 | 13 | 14 | 13 | 14 | 16 | 16 | 17 | 16 | 15 | 14 | 13 | 11 | |
Swell 1 Height (m) Direction Period (s) | SSW 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 | S 14 | S 14 | S 14 | S 14 | S 14 | SW 14 | SW 14 |
 kJ | 2440 | 2739 | 3202 | 3374 | 3859 | 3461 | 3095 | 2577 | 2343 | 2013 | 1814 | 1465 | 1065 | 823 | 631 | 531 | 573 | 1317 | 1941 | 2487 | 2452 | 2217 | 2967 | 2764 |
Swell 2 Height (m) Direction Period (s) | — | SE 11 | W 12 | W 12 | W 12 | W 12 | W 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 12 | WSW 12 | WSW 13 | WSW 13 | S 15 | SW 11 | SW 11 | SW 11 | WSW 15 | SW 11 | S 14 | S 13 |
| kJ | — | 5 | 1914 | 1644 | 1395 | 1365 | 1024 | 911 | 851 | 828 | 667 | 572 | 797 | 730 | 710 | 594 | 716 | 604 | 553 | 431 | 1051 | 701 | 1918 | 1679 |
Swell 3 Height (m) Direction Period (s) | — | — | 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 | WSW 15 | SW 12 | WSW 15 | — | — |
| kJ | — | — | 5 | 5 | 5 | — | — | — | 15 | 15 | 36 | 81 | 123 | 119 | 232 | 402 | 433 | 329 | 566 | 661 | 542 | 1162 | — | — |
Wind waves Height (m) Direction Period (s) | W 12 | W 12 | W 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 2590 | 2229 | 1735 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 187 | 187 | 187 | 187 | 5 | 5 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 0 | 0 | 12 | 27 | 30 |
Best forecast wave conditions in Cape Town | ||||||||||||||||||||||||
Best forecast wave conditions in South Africa | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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