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:
Kanon surfForecast / Overberg / South Africa
48hr Weather and Surf, issued 7 pm Wednesday 10 Dec 2025 SASTForecast update in hr min s Forecast update imminent
Kanon surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kanon sea temperature is
21.6° C
(Which is 1.6°C warmer than normal for this time of year)How big are the waves at Kanon today?
The current surf forecast for Kanon at 1AM is: 1.8m 7s primary swell from a East-southeast direction and 0.7m 10s secondary swell from a Southwest direction (forecast issued at 07:00pm December 10). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | 4.5ft (1.4m) | 7s |
| Afternoon (11 Dec) | 4.5ft (1.4m) | 7s |
| Evening (11 Dec) | 4.5ft (1.3m) | 8s |
Table - waves today at Kanon. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| 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) (?) | 12 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 9 | 18 | 18 | 17 | 10 | 10 | 10 | 16 | 14 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 215 | 329 | 350 | 569 | 251 | 186 | 162 | 197 | 167 | 172 | 173 | 178 | 246 | 283 | 292 | 352 | 2293 | 862 | 828 | 986 | 2497 | 4416 | 4976 | 2679 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | on | cross- on | cross- on | cross- on | on | on | on | cross- off | cross- off | cross- off | cross- off | off | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 7:39PM 1.39 | 8:25AM 1.51 | 8:46PM 1.26 | 9:36AM 1.45 | 10:12PM 1.21 | 10:51AM 1.43 | ||||||||||||||||||
Low Tide / height (m) | 1:50AM 0.53 | 2:54PM 0.68 | 2:51AM 0.64 | 4:16PM 0.71 | 4:07AM 0.71 | |||||||||||||||||||
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 5:13 | - | - | - | - | - | - | - | 5:13 | - | - | - | - | - | - | - | 5:13 | - | - |
| Sunset | 7:36 | - | - | - | - | - | - | - | 7:37 | - | - | - | - | - | - | - | 7:37 | - | - | - | - | - | - | - |
 |  | | | | | | | |  | | | | | | |  |  | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - | - |
| Temp. °C | 19 | 18 | 18 | 18 | 18 | 21 | 25 | 25 | 24 | 24 | 21 | 20 | 19 | 22 | 24 | 23 | 20 | 19 | 19 | 18 | 17 | 18 | 20 | 20 |
| Feels °C (?) | 12 | 11 | 12 | 16 | 18 | 20 | 23 | 23 | 23 | 23 | 18 | 19 | 17 | 22 | 23 | 19 | 14 | 14 | 13 | 12 | 11 | 11 | 12 | 12 |
- 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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