Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
70-foot plus waves predicted for Portuguese big wave tow surfing competition.
Surf Forecasts:
Dumps surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 1 pm Thursday 11 Dec 2025 SASTForecast update in hr min s Forecast update imminent
Dumps surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Dumps sea temperature is
14.9° C
(Which is 4.0°C colder than average for this time of year)How big are the waves at Dumps today?
The current surf forecast for Dumps at 7PM is: 1.2m 9s primary swell from a Southwest direction and 0.2m 10s secondary swell from a West direction (forecast issued at 01:00pm December 11). The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | 4.5ft (1.3m) | 10s |
| Afternoon (11 Dec) | 4ft (1.2m) | 9s |
| Evening (11 Dec) | 4ft (1.2m) | 9s |
Table - waves today at Dumps. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| 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 | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 9 | 9 | 9 | 9 | 19 | 18 | 17 | 17 | 10 | 10 | 16 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 272 | 258 | 253 | 226 | 119 | 299 | 572 | 885 | 1245 | 1417 | 1861 | 7411 | 7879 | 8689 | 7832 | 6307 | 5093 | 4401 | 4073 | 3533 | 2990 | 2597 | 2160 | 1913 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross | cross | cross- on | cross- on | cross- on | cross- on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 8:21AM 1.51 | 8:54PM 1.29 | 9:31AM 1.47 | 10:14PM 1.27 | 10:40AM 1.46 | 11:27PM 1.29 | ||||||||||||||||||
Low Tide / height (m) | 3:03PM 0.74 | 3:01AM 0.76 | 4:20PM 0.75 | 4:15AM 0.79 | 5:26PM 0.72 | 5:22AM 0.78 | ||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 5:28 | - | - | - | - | - | - | - | 5:28 | - | - | - | - | - | - | - | 5:28 |
| Sunset | - | - | 7:49 | - | - | - | - | - | - | - | 7:50 | - | - | - | - | - | - | - | 7:51 | - | - | - | - | - |
 | |  |  |  | |  |  | |  |  | |  | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | 4 | 1 | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 25 | 24 | 22 | 20 | 19 | 18 | 17 | 19 | 20 | 18 | 19 | 17 | 17 | 17 | 16 | 17 | 17 | 18 | 18 | 17 | 17 | 16 | 16 | 17 |
| Feels °C (?) | 23 | 22 | 22 | 20 | 20 | 18 | 16 | 16 | 15 | 16 | 16 | 14 | 15 | 14 | 12 | 14 | 14 | 14 | 14 | 14 | 15 | 14 | 15 | 15 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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