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:
Back Beach surfForecast / Inhambane / Mozambique
48hr Weather and Surf, issued 7 pm Wednesday 10 Dec 2025 CATForecast update in hr min s Forecast update imminent
Back Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Back Beach sea temperature is
26.8° C
(Which is normal for this time of year)How big are the waves at Back Beach today?
The current surf forecast for Back Beach at 1AM is: 0.6m 12s primary swell from a South-southwest direction and 0.3m 16s secondary swell from a South-southwest direction, 0.5m 4s secondary swell from a Southeast direction (forecast issued at 07:00pm December 10). The wind direction is predicted to be onshore.
| Time (CAT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (11 Dec) | 4.5ft (1.3m) | 8s |
| Afternoon (11 Dec) | 5ft (1.5m) | 8s |
| Evening (11 Dec) | 5.5ft (1.7m) | 8s |
Table - waves today at Back Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| 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) (?) | 13 | 12 | 12 | 12 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 15 | 15 | 15 | 15 | 15 | 14 | 8 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 57 | 51 | 75 | 107 | 169 | 196 | 234 | 253 | 295 | 364 | 490 | 477 | 413 | 385 | 524 | 631 | 648 | 640 | 517 | 416 | 333 | 250 | 210 | 176 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross- on | on | on | on | on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross- on | cross | cross | cross- off | cross- off | cross- off | cross |
High Tide / height (m) | 7:27PM 2.13 | 8:03AM 2.12 | 8:23PM 1.97 | 9:10AM 1.97 | 9:37PM 1.85 | 10:32AM 1.90 | ||||||||||||||||||
Low Tide / height (m) | 1:44AM 0.67 | 2:20PM 0.86 | 2:45AM 0.84 | 3:32PM 0.99 | 4:03AM 0.95 | |||||||||||||||||||
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 4:43 | - | - | - | - | - | - | - | 4:43 | - | - | - | - | - | - | - | 4:43 | - | - | - |
| Sunset | 6:16 | - | - | - | - | - | - | - | 6:17 | - | - | - | - | - | - | - | 6:17 | - | - | - | - | - | - | - |
 |  |  | |  | | | | | | | | | |  | |  | |  |  |  | | | | |
Rain (mm) | - | - | 2 | 2 | 3 | 2 | 2 | 1 | 1 | 1 | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - |
| Temp. °C | 26 | 25 | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 25 | 25 | 26 | 26 |
| Feels °C (?) | 25 | 26 | 25 | 24 | 24 | 24 | 25 | 25 | 25 | 22 | 22 | 22 | 25 | 25 | 25 | 24 | 25 | 22 | 23 | 23 | 25 | 25 | 27 | 26 |
- 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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