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 pm 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
24.4° C
(Which is normal for this time of year)How big are the waves at Bog Bay today?
The current surf forecast for Bog Bay at 6PM is: 2.2m 7s primary swell from a South direction and 0.9m 8s secondary swell from a East-northeast direction, 0.1m 17s secondary swell from a South direction (forecast issued at 01:00pm December 13). 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) | 6.5ft (2.0m) | 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 | Tuesday 16 | |||||||||||||||||||||
| 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) (?) | 10 | 6 | 7 | 8 | 8 | 8 | 8 | 7 | 13 | 12 | 9 | 9 | 9 | 6 | 6 | 6 | 6 | 7 | 7 | 8 | 7 | 7 | 7 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 222 | 275 | 496 | 585 | 465 | 328 | 401 | 150 | 455 | 290 | 289 | 397 | 484 | 115 | 127 | 110 | 197 | 395 | 603 | 623 | 475 | 363 | 314 | 288 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross | cross | cross- off | cross- off | cross | glass | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross- on |
High Tide / height (m) | 10:49AM 1.33 | 11:21PM 1.17 | 12:02PM 1.36 | 12:35AM 1.23 | 12:58PM 1.42 | 1:28AM 1.32 | ||||||||||||||||||
Low Tide / height (m) | 5:17PM 0.71 | 5:21AM 0.65 | 6:29PM 0.64 | 6:31AM 0.61 | 7:20PM 0.54 | 7:24AM 0.54 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 4:48 | - | - | - | - | - | - | - | 4:48 | - | - | - | - | - | - | - | 4:48 | - |
| Sunset | - | - | 6:49 | - | - | - | - | - | - | - | 6:50 | - | - | - | - | - | - | - | 6:51 | - | - | - | - | - |
 | |  |  | | |  | | |  | |  | | | | | | | |  | | | | | |
Rain (mm) | - | - | 3 | 3 | 3 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 23 | 21 | 21 | 20 | 20 | 20 | 21 | 22 | 22 | 22 | 21 | 20 | 20 | 20 | 24 | 29 | 28 | 27 | 25 | 25 | 24 | 24 | 27 |
| Feels °C (?) | 22 | 19 | 18 | 18 | 18 | 19 | 19 | 22 | 21 | 19 | 19 | 19 | 19 | 20 | 20 | 24 | 27 | 26 | 26 | 28 | 27 | 25 | 24 | 27 |
- 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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