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Big Bay Surf Forecast
/ Cape Town (69 surf breaks) /
Surf Forecasts:
Big Bay surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 7 pm Tuesday 16 Sep 2025 SAST
How big are the waves at Big Bay today?
The current surf forecast for Big Bay at 12AM is: 2.5m 12s primary swell from a West-southwest direction and 2.5m 11s secondary swell from a South-southwest direction (forecast issued at 07:00pm September 16). The wind direction is predicted to be cross-offshore and the swell rating is 5.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Sep) | 10ft (3.0m) | 12s |
| Afternoon (17 Sep) | 10ft (3.0m) | 12s |
| Evening (17 Sep) | 8ft (2.5m) | 12s |
Table - waves today at Big Bay. (Swell directed towards the surf break)
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 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 | 11 AM | 2 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 3747 | 2064 | 1787 | 1881 | 2400 | 2459 | 2459 | 2209 | 2027 | 1855 | 1647 | 1379 | 1182 | 976 | 640 | 553 | 543 | 553 | 652 | 573 | 760 | 786 | 625 | 639 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross- off | cross- off | cross- off | glass | cross | cross- on | cross | cross- off | cross- off | cross- off | glass | glass | cross | cross | cross- off | cross- off | cross- off | off | off | off | cross- off | cross |
High Tide / height (m) | 12:10AM 1.14 | 12:47PM 1.23 | 1:07AM 1.25 | 1:31PM 1.36 | 1:48AM 1.34 | |||||||||||||||||||
Low Tide / height (m) | 6:04PM 0.51 | 6:33AM 0.41 | 7:05PM 0.38 | 7:20AM 0.30 | 7:48PM 0.26 | 7:57AM 0.21 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:41 | - | - | - | - | - | - | - | 6:39 | - | - |
| Sunset | 6:37 | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:38 | - | - | - | - | - | - | - |
 |  |  | |  |  | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 14 | 14 | 13 | 13 | 12 | 12 | 13 | 14 | 13 | 13 | 12 | 12 | 11 | 11 | 14 | 15 | 15 | 13 | 13 | 12 | 12 | 12 | 17 | 20 |
| Feels °C (?) | 9 | 11 | 10 | 10 | 9 | 11 | 10 | 10 | 9 | 10 | 10 | 10 | 9 | 9 | 12 | 12 | 11 | 9 | 10 | 9 | 9 | 10 | 15 | 17 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Cape Town
Continuing clean conditions at Big Bay (calm at Plattekloof Glen wx 14 km from Big Bay). 3.0m 11s groundswell from the WSW with a 1.9m 11s groundswell from the SSW. 2 swells combining so expect closeout sets.
2 h 0 min ago
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