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:
365s surfForecast / Cape Town / South Africa
48hr Weather and Surf, issued 1 am Thursday 11 Dec 2025 SASTForecast update in hr min s Forecast update imminent
365s surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's 365s sea temperature is
17.1° C
(Which is 1.9°C colder than average for this time of year)How big are the waves at 365s today?
The current surf forecast for 365s at 6AM is: 1.3m 10s primary swell from a Southwest direction and 0.3m 14s secondary swell from a Southwest direction (forecast issued at 01:00am December 11). An open ocean swell of 1.4m 7s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.
| 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) | 4.5ft (1.3m) | 9s |
Table - waves today at 365s. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 11 | Friday 12 | Saturday 13 | ||||||||||||||||||||||
| 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 | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 19 | 18 | 17 | 17 | 16 | 16 | 16 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 369 | 362 | 315 | 296 | 258 | 253 | 247 | 255 | 117 | 376 | 635 | 1098 | 1453 | 1737 | 1983 | 2214 | 7335 | 7729 | 8402 | 5046 | 5899 | 5341 | 4552 | 3978 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross- off | glass | cross- on | on | on | on | cross | cross- off | cross- off | cross- off | cross- off | cross- on | cross- on | cross- on | on | on | on | on | on | on | on | cross- on |
High Tide / height (m) | 8:15AM 1.26 | 8:46PM 1.04 | 9:21AM 1.21 | 10:05PM 1.01 | 10:28AM 1.20 | |||||||||||||||||||
Low Tide / height (m) | 1:43AM 0.42 | 2:50PM 0.48 | 2:47AM 0.50 | 4:06PM 0.50 | 4:00AM 0.55 | 5:14PM 0.47 | ||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | ||||||||||||||||||||||
| Sunrise | - | - | - | 5:28 | - | - | - | - | - | - | - | 5:28 | - | - | - | - | - | - | - | 5:28 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 7:51 | - | - | - | - | - | - | - | 7:52 | - | - | - | - | - | - | - | 7:52 | - |
 | | |  | |  | |  |  | | | |  |  | | |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | - | 1 | - | - | - | - | - | - | - |
| Temp. °C | 20 | 18 | 18 | 19 | 20 | 20 | 21 | 20 | 20 | 19 | 18 | 17 | 18 | 19 | 19 | 18 | 17 | 17 | 16 | 17 | 17 | 17 | 17 | 17 |
| Feels °C (?) | 16 | 15 | 16 | 19 | 19 | 19 | 20 | 20 | 20 | 17 | 15 | 13 | 14 | 15 | 13 | 12 | 11 | 10 | 11 | 13 | 13 | 13 | 13 | 13 |
- 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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