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:
Kosi Bay surfForecast / KZN North / South Africa
48hr Weather and Surf, issued 1 am Sunday 14 Dec 2025 SASTForecast update in hr min s Forecast update imminent
Kosi Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Kosi Bay sea temperature is
25.9° C
(Which is slightly warmer than usual)How big are the waves at Kosi Bay today?
The current surf forecast for Kosi Bay at 3AM is: 2.0m 6s primary swell from a South direction and 1.1m 8s secondary swell from a East direction, 0.1m 20s secondary swell from a South direction (forecast issued at 01:00am December 14). The wind direction is predicted to be cross-onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | 7ft (2.2m) | 7s |
| Afternoon (14 Dec) | 5ft (1.5m) | 9s |
| Evening (14 Dec) | 6ft (1.8m) | 8s |
Table - waves today at Kosi Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 14 | Monday 15 | Tuesday 16 | ||||||||||||||||||||||
| 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 | 6 | 7 | 7 | 7 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 135 | 264 | 460 | 522 | 478 | 355 | 347 | 422 | 277 | 280 | 197 | 161 | 134 | 163 | 152 | 134 | 157 | 160 | 161 | 156 | 135 | 171 | 313 | 326 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | glass | cross- off | glass | cross | cross | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross |
High Tide / height (m) | 11:13PM 1.40 | 11:58AM 1.55 | 12:30AM 1.46 | 12:57PM 1.62 | 1:24AM 1.55 | 1:43PM 1.70 | ||||||||||||||||||
Low Tide / height (m) | 5:22AM 0.76 | 6:22PM 0.75 | 6:33AM 0.70 | 7:16PM 0.65 | 7:26AM 0.62 | 7:58PM 0.54 | ||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | ||||||||||||||||||||||
| Sunrise | - | - | 4:48 | - | - | - | - | - | - | - | 4:48 | - | - | - | - | - | - | - | 4:48 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:37 | - | - | - | - | - | - | - | 6:37 | - |
 |  |  | | | | |  |  | |  |  | | | |  | | | | | | | | | |
Rain (mm) | 6 | 1 | 1 | 2 | 5 | 4 | 1 | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 23 | 22 | 22 | 22 | 21 | 21 | 22 | 22 | 23 | 22 | 22 | 24 | 25 | 27 | 26 | 24 | 24 | 23 | 23 | 25 | 27 | 28 | 26 | 25 |
| Feels °C (?) | 22 | 19 | 19 | 20 | 20 | 21 | 23 | 24 | 26 | 25 | 25 | 28 | 26 | 28 | 27 | 25 | 25 | 24 | 24 | 25 | 26 | 27 | 25 | 24 |
- 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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