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:
Gourits Mouth surfForecast / Overberg / South Africa
48hr Weather and Surf, issued 7 pm Friday 12 Dec 2025 SASTForecast update in hr min s Forecast update imminent
Gourits Mouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Gourits Mouth sea temperature is
21.1° C
(Which is 1.1°C warmer than normal for this time of year)How big are the waves at Gourits Mouth today?
The current surf forecast for Gourits Mouth at 10PM is: 3.5m 10s primary swell from a Southwest direction and 1.6m 16s secondary swell from a Southwest direction (forecast issued at 07:00pm December 12). An open ocean swell of 0.7m 10s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 11.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | - | - |
| Afternoon (12 Dec) | 3.5ft (1.1m) | 17s |
| Evening (12 Dec) | 11ft (3.5m) | 10s |
Table - waves today at Gourits Mouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| 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) (?) | 9 | 10 | 10 | 11 | 12 | 12 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1550 | 2339 | 2821 | 2556 | 3114 | 3234 | 5477 | 4581 | 3817 | 3305 | 2972 | 2660 | 2369 | 1999 | 1638 | 1427 | 1336 | 1324 | 1655 | 2001 | 1968 | 2034 | 2130 | 2130 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | glass | cross | glass | cross- on | cross | cross- on | on | on | cross- on | glass | on | cross- on | cross- on |
High Tide / height (m) | 10:12PM 1.21 | 10:51AM 1.43 | 11:37PM 1.23 | 11:56AM 1.46 | 12:40AM 1.30 | 12:48PM 1.51 | ||||||||||||||||||
Low Tide / height (m) | 4:16PM 0.71 | 4:07AM 0.71 | 5:36PM 0.68 | 5:26AM 0.72 | 6:36PM 0.61 | 6:32AM 0.68 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 5:13 | - | - | - | - | - | - | - | 5:13 | - | - | - | - | - | - | - | 5:13 | - | - |
| Sunset | 7:37 | - | - | - | - | - | - | - | 7:38 | - | - | - | - | - | - | - | 7:38 | - | - | - | - | - | - | - |
 |  | | |  |  |  | | |  |  | |  | | | | | | | | | | | | |
Rain (mm) | - | 1 | 4 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 20 | 18 | 18 | 17 | 16 | 18 | 19 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 19 | 19 | 19 | 18 | 17 | 17 | 17 | 18 | 21 | 21 |
| Feels °C (?) | 15 | 14 | 13 | 11 | 9 | 10 | 11 | 11 | 12 | 15 | 16 | 17 | 16 | 16 | 18 | 15 | 17 | 17 | 17 | 17 | 17 | 17 | 20 | 18 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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