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 7 pm Thursday 11 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
25.1° C
(Which is slightly warmer than usual)How big are the waves at Bog Bay today?
The current surf forecast for Bog Bay at 9PM is: 2.4m 7s primary swell from a East-northeast direction and 1.1m 14s secondary swell from a South direction (forecast issued at 07:00pm December 11). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | - | - |
| Afternoon (11 Dec) | 3.5ft (1.1m) | 14s |
| Evening (11 Dec) | 8ft (2.4m) | 7s |
Table - waves today at Bog Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| 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) (?) | 14 | 7 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 9 | 9 | 8 | 8 | 8 | 8 | 7 | 8 | 7 | 7 | 16 | 15 | 14 | 13 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 469 | 553 | 540 | 487 | 529 | 504 | 632 | 947 | 1014 | 705 | 433 | 268 | 228 | 211 | 185 | 280 | 399 | 340 | 226 | 206 | 252 | 229 | 192 | 169 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross | cross | cross- on | cross- on | cross- on | glass | cross- off | cross- off | glass | cross | cross- off | cross- off | cross- off | cross | cross | cross | cross- off | cross- off | cross- off | on | cross- on |
High Tide / height (m) | 8:23PM 1.26 | 9:27AM 1.35 | 9:46PM 1.17 | 10:49AM 1.33 | 11:21PM 1.17 | 12:02PM 1.36 | ||||||||||||||||||
Low Tide / height (m) | 2:25PM 0.66 | 2:38AM 0.56 | 3:46PM 0.72 | 3:56AM 0.64 | 5:17PM 0.71 | 5:21AM 0.65 | ||||||||||||||||||
Thursday 11 | Friday 12 | Saturday 13 | Sunday 14 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 4:48 | - | - | - | - | - | - | - | 4:48 | - | - | - | - | - | - | - | 4:48 | - | - | - |
| Sunset | 6:47 | - | - | - | - | - | - | - | 6:49 | - | - | - | - | - | - | - | 6:49 | - | - | - | - | - | - | - |
 |  | | | | | | | |  | | |  | | | |  |  | | | |  | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 4 | 3 | 3 | 1 | - | - | - | - |
| Temp. °C | 24 | 22 | 21 | 20 | 20 | 25 | 31 | 32 | 29 | 24 | 24 | 23 | 22 | 24 | 23 | 23 | 22 | 21 | 20 | 21 | 20 | 21 | 22 | 23 |
| Feels °C (?) | 19 | 18 | 17 | 18 | 18 | 24 | 30 | 29 | 34 | 21 | 24 | 25 | 23 | 26 | 21 | 21 | 20 | 19 | 18 | 20 | 20 | 23 | 22 | 21 |
- 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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