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:
Mapelane surfForecast / KZN North / South Africa
48hr Weather and Surf, issued 7 am Saturday 13 Dec 2025 SASTForecast update in hr min s Forecast update imminent
Mapelane surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Mapelane sea temperature is
25.4° C
(Which is slightly warmer than usual)How big are the waves at Mapelane today?
The current surf forecast for Mapelane at 12PM is: 2.5m 8s primary swell from a Northeast direction and 1.6m 8s secondary swell from a East-northeast direction, 0.5m 11s secondary swell from a South direction (forecast issued at 07:00am December 13). The wind direction is predicted to be onshore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 6ft (1.8m) | 8s |
| Afternoon (13 Dec) | 5ft (1.5m) | 8s |
| Evening (13 Dec) | 3.5ft (1.0m) | 8s |
Table - waves today at Mapelane. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| 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 | 11 PM | 2 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 8 | 8 | 8 | 6 | 7 | 7 | 7 | 8 | 8 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 15 | 15 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 369 | 388 | 746 | 280 | 112 | 135 | 275 | 527 | 457 | 279 | 468 | 380 | 394 | 284 | 239 | 228 | 190 | 187 | 157 | 273 | 152 | 138 | 184 | 193 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- on | cross- on | on | cross- off | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 10:45AM 1.40 | 11:18PM 1.27 | 12:01PM 1.43 | 12:34AM 1.33 | 12:59PM 1.50 | 1:27AM 1.42 | ||||||||||||||||||
Low Tide / height (m) | 5:11PM 0.76 | 5:24AM 0.70 | 6:26PM 0.69 | 6:34AM 0.65 | 7:19PM 0.59 | |||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| Sunrise | 4:46 | - | - | - | - | - | - | - | 4:46 | - | - | - | - | - | - | - | 4:47 | - | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:42 | - | - | - | - | - | - | - | 6:42 | - | - | - | - | - | - | - | 6:43 | - | - | - |
 |  | |  |  |  | | | | | | | |  | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | 2 | 4 | 3 | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 23 | 26 | 28 | 24 | 23 | 22 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 22 | 22 | 23 | 25 | 26 | 26 | 25 | 24 | 23 |
| Feels °C (?) | 21 | 25 | 29 | 21 | 22 | 20 | 17 | 17 | 19 | 20 | 20 | 22 | 23 | 24 | 26 | 24 | 23 | 22 | 23 | 24 | 25 | 24 | 23 | 22 |
- 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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