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 Tuesday 16 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 11PM is: 0.9m 8s primary swell from a East-southeast direction and 0.4m 14s secondary swell from a South-southwest direction (forecast issued at 07:00pm December 16). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (CAT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | - | - |
| Afternoon (16 Dec) | 3.5ft (1.1m) | 8s |
| Evening (16 Dec) | 3ft (0.9m) | 8s |
Table - waves today at Back Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 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) (?) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 8 | 8 | 8 | 9 | 9 | 8 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 142 | 93 | 88 | 91 | 98 | 125 | 128 | 108 | 96 | 76 | 76 | 76 | 80 | 90 | 108 | 80 | 76 | 58 | 82 | 151 | 196 | 190 | 185 | 185 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross- on | on | on | on | on | on | on | on |
High Tide / height (m) | 2:05AM 2.12 | 2:27PM 2.20 | 2:42AM 2.23 | 3:02PM 2.30 | 3:17AM 2.34 | |||||||||||||||||||
Low Tide / height (m) | 7:59PM 0.73 | 8:16AM 0.64 | 8:37PM 0.61 | 8:53AM 0.52 | 9:11PM 0.50 | 9:28AM 0.43 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 4:45 | - | - | - | - | - | - | - | 4:45 | - | - | - | - | - | - | - | 4:46 | - | - | - |
| Sunset | 6:21 | - | - | - | - | - | - | - | 6:21 | - | - | - | - | - | - | - | 6:22 | - | - | - | - | - | - | - |
 |  | |  |  | | | | | | | |  |  | | | |  | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | 3 | 1 | 1 | - | 2 | 2 | - | 1 | - | - | - |
| Temp. °C | 26 | 26 | 26 | 26 | 26 | 26 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 28 | 28 | 28 | 28 | 27 | 26 | 26 | 25 | 26 | 26 | 26 |
| Feels °C (?) | 27 | 28 | 28 | 28 | 28 | 27 | 27 | 26 | 27 | 27 | 27 | 28 | 28 | 30 | 29 | 29 | 30 | 29 | 28 | 28 | 27 | 27 | 27 | 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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