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:
Extensions surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 1 pm Sunday 14 Dec 2025 SASTForecast update in hr min s Forecast update imminent
Extensions surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Extensions sea temperature is
18.4° C
(Which is slightly cooler than normal)How big are the waves at Extensions today?
The current surf forecast for Extensions at 8PM is: 2.5m 11s primary swell from a Southwest direction and 0.1m 19s secondary swell from a Northwest direction (forecast issued at 01:00pm December 14). The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | 8ft (2.5m) | 12s |
| Afternoon (14 Dec) | 7.5ft (2.3m) | 12s |
| Evening (14 Dec) | 8ft (2.5m) | 11s |
Table - waves today at Extensions. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | |||||||||||||||||||||
| 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) (?) | 12 | 12 | 12 | 11 | 11 | 11 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 15 | 14 | 14 | 14 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1775 | 1557 | 1398 | 1562 | 1599 | 1599 | 1943 | 2113 | 2149 | 2335 | 2379 | 2148 | 2044 | 2044 | 1914 | 1794 | 1683 | 1694 | 1100 | 2661 | 2426 | 2452 | 2702 | 2477 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross | cross | cross- off | cross- off | cross- off | cross- off | cross | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- on | cross- on | on | cross- on | on | cross- on | cross |
High Tide / height (m) | 11:28AM 1.20 | 12:15AM 1.08 | 12:18PM 1.23 | 1:01AM 1.15 | 1:02PM 1.27 | 1:40AM 1.21 | ||||||||||||||||||
Low Tide / height (m) | 6:10PM 0.43 | 6:11AM 0.53 | 6:54PM 0.37 | 6:59AM 0.48 | 7:32PM 0.32 | 7:40AM 0.43 | ||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 5:28 | - | - | - | - | - | - | - | 5:28 | - | - | - | - | - | - | - | 5:28 |
| Sunset | - | - | 7:52 | - | - | - | - | - | - | - | 7:53 | - | - | - | - | - | - | - | 7:53 | - | - | - | - | - |
 | | |  | | | | | | | | | | | | | | |  | | |  |  |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 2 | 1 |
| Temp. °C | 16 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 19 | 20 | 20 | 21 | 20 | 20 | 20 | 19 |
| Feels °C (?) | 14 | 15 | 16 | 16 | 17 | 17 | 17 | 17 | 18 | 19 | 18 | 18 | 17 | 17 | 17 | 18 | 19 | 18 | 19 | 20 | 19 | 19 | 18 | 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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