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:
Gansbaai surfForecast / Overberg / South Africa
48hr Weather and Surf, issued 7 pm Friday 12 Dec 2025 SASTForecast update in hr min s Forecast update imminent
Gansbaai surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Gansbaai sea temperature is
16.8° C
(Which is 2.5°C colder than average for this time of year)How big are the waves at Gansbaai today?
The current surf forecast for Gansbaai at 1AM is: 4.5m 14s primary swell from a Southwest direction and 0.4m 12s secondary swell from a Southeast direction, 0.3m 12s secondary swell from a South-southeast direction (forecast issued at 07:00pm December 12). The wind direction is predicted to be onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 13ft (4.0m) | 14s |
| Afternoon (13 Dec) | 11ft (3.5m) | 13s |
| Evening (13 Dec) | 11ft (3.5m) | 13s |
Table - waves today at Gansbaai. (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) (?) | 10 | 10 | 12 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 2520 | 2881 | 3636 | 7595 | 8180 | 6383 | 5074 | 4376 | 4118 | 3759 | 3191 | 2780 | 2320 | 2027 | 1685 | 1557 | 1438 | 1715 | 1845 | 1845 | 2264 | 2375 | 2259 | 2414 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | on | on | on | on | on | on | cross- on | cross- on | glass | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- off | off | cross- off | glass | cross- on | cross- on |
High Tide / height (m) | 10:03PM 1.03 | 10:29AM 1.23 | 11:18PM 1.06 | 11:29AM 1.24 | 12:16AM 1.11 | 12:19PM 1.27 | ||||||||||||||||||
Low Tide / height (m) | 4:06PM 0.53 | 3:59AM 0.58 | 5:16PM 0.51 | 5:11AM 0.58 | 6:12PM 0.46 | 6:12AM 0.56 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:22 | - | - |
| Sunset | 7:49 | - | - | - | - | - | - | - | 7:49 | - | - | - | - | - | - | - | 7:50 | - | - | - | - | - | - | - |
 |  |  | |  |  |  | | |  | |  | | | | | | | | | | | | | |
Rain (mm) | 4 | 1 | 2 | 1 | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 19 | 18 | 17 | 17 | 16 | 17 | 17 | 17 | 18 | 17 | 17 | 16 | 15 | 16 | 17 | 18 | 18 | 18 | 18 | 17 | 17 | 18 | 20 | 21 |
| Feels °C (?) | 13 | 11 | 11 | 9 | 10 | 11 | 12 | 12 | 13 | 14 | 15 | 15 | 14 | 15 | 15 | 15 | 16 | 18 | 17 | 17 | 16 | 18 | 20 | 19 |
- 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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