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:
Bog Bay surfForecast / KZN North / South Africa
48hr Weather and Surf, issued 1 am Saturday 13 Dec 2025 SASTForecast update in hr min s Forecast update imminent
Bog Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Bog Bay sea temperature is
24.9° C
(Which is slightly warmer than usual)How big are the waves at Bog Bay today?
The current surf forecast for Bog Bay at 4AM is: 1.3m 8s primary swell from a East-northeast direction and 0.5m 11s secondary swell from a South direction (forecast issued at 01:00am December 13). An open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 4ft (1.2m) | 8s |
| Afternoon (13 Dec) | 6ft (1.8m) | 6s |
| Evening (13 Dec) | 7ft (2.2m) | 8s |
Table - waves today at Bog Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| 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) (?) | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 8 | 8 | 8 | 8 | 9 | 12 | 12 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 6 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 404 | 256 | 206 | 206 | 176 | 153 | 404 | 600 | 466 | 323 | 163 | 150 | 444 | 280 | 275 | 318 | 224 | 224 | 185 | 210 | 270 | 309 | 498 | 590 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | glass | cross | on | cross | cross- off | cross- off | cross | cross | cross | cross- off | cross- off | on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 9:46PM 1.17 | 10:49AM 1.33 | 11:21PM 1.17 | 12:02PM 1.36 | 12:35AM 1.23 | 12:58PM 1.42 | ||||||||||||||||||
Low Tide / height (m) | 3:56AM 0.64 | 5:17PM 0.71 | 5:21AM 0.65 | 6:29PM 0.64 | 6:31AM 0.61 | 7:20PM 0.54 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| Sunrise | - | - | 4:48 | - | - | - | - | - | - | - | 4:48 | - | - | - | - | - | - | - | 4:48 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:49 | - | - | - | - | - | - | - | 6:50 | - | - | - | - | - | - | - | 6:51 | - |
 | |  | | |  | |  |  | | |  | |  | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | 1 | 3 | 6 | 3 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 25 | 24 | 23 | 24 | 23 | 21 | 21 | 20 | 20 | 20 | 20 | 21 | 22 | 22 | 22 | 21 | 20 | 20 | 19 | 23 | 27 | 27 | 27 | 25 |
| Feels °C (?) | 24 | 26 | 24 | 27 | 21 | 18 | 19 | 17 | 18 | 19 | 20 | 21 | 21 | 19 | 19 | 19 | 19 | 20 | 19 | 23 | 26 | 25 | 26 | 25 |
- 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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