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 am 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 10AM is: 0.9m 18s primary swell from a Southwest direction and 1.2m 6s secondary swell from a Southwest direction (forecast issued at 07:00am December 12). An open ocean swell of 1.2m 9s is not directed at the surf break, a second open ocean swell of 1.1m 5s is not directed at the surf break. The wind direction is predicted to be glassy and the swell rating is 2.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 3ft (0.9m) | 19s |
| 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 | Mon 15 | |||||||||||||||||||||
| 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 | 2 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 20 | 19 | 18 | 17 | 9 | 9 | 11 | 16 | 12 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 190 | 372 | 628 | 772 | 1592 | 2197 | 3075 | 7961 | 3087 | 6067 | 5477 | 4401 | 3506 | 3018 | 2702 | 2407 | 2254 | 1897 | 1638 | 1513 | 1427 | 1324 | 1547 | 1735 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | glass | cross | cross- off | cross- off | off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | glass | cross- off | glass | cross- on | cross | cross- on | on | cross- on | cross- on |
High Tide / height (m) | 9:36AM 1.45 | 10:12PM 1.21 | 10:51AM 1.43 | 11:37PM 1.23 | 11:56AM 1.46 | 12:40AM 1.30 | ||||||||||||||||||
Low Tide / height (m) | 4:16PM 0.71 | 4:07AM 0.71 | 5:36PM 0.68 | 5:26AM 0.72 | 6:36PM 0.61 | |||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
| Sunrise | - | 5:13 | - | - | - | - | - | - | - | 5:13 | - | - | - | - | - | - | - | 5:13 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 7:37 | - | - | - | - | - | - | - | 7:38 | - | - | - | - | - | - | - | 7:38 | - | - | - |
 |  |  | | |  | |  | | |  | | | | | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | 2 | 4 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 20 | 20 | 25 | 23 | 19 | 18 | 18 | 17 | 17 | 17 | 18 | 18 | 19 | 17 | 17 | 17 | 17 | 17 | 19 | 19 | 19 | 18 | 17 | 17 |
| Feels °C (?) | 17 | 18 | 26 | 19 | 13 | 14 | 11 | 10 | 10 | 9 | 11 | 11 | 13 | 14 | 15 | 16 | 16 | 16 | 17 | 16 | 17 | 17 | 16 | 16 |
- 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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