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:
Zavial surfForecast / Algarve / Portugal
48hr Weather and Surf, issued 11 am Tuesday 16 Dec 2025 WETForecast update in hr min s Forecast update imminent
Zavial surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Zavial sea temperature is
17.0° C
(Which is slightly cooler than normal)How big are the waves at Zavial today?
The current surf forecast for Zavial at 7PM is: 4.5m 13s primary swell from a West-northwest direction and 3.5m 13s secondary swell from a West direction (forecast issued at 11:00am December 16). The wind direction is predicted to be cross-offshore.
| Time (WET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | 15ft (4.5m) | 11s |
| Afternoon (16 Dec) | 15ft (4.5m) | 13s |
| Evening (16 Dec) | 15ft (4.5m) | 12s |
Table - waves today at Zavial. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 12 | 13 | 13 | 12 | 12 | 13 | 13 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 24 | 22 | 21 | 19 | 19 | 18 | 17 | 17 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 4605 | 5544 | 7100 | 7242 | 6398 | 4999 | 4203 | 3556 | 2930 | 2454 | 2026 | 1783 | 1430 | 1266 | 1036 | 986 | 1377 | 4648 | 8942 | 8363 | 8565 | 6827 | 6673 | 6565 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | glass | glass | on | cross- on | cross- on | cross | cross | cross- on | cross | on |
High Tide / height (m) | 11:58AM 2.29 | 12:21AM 2.42 | 12:41PM 2.36 | 12:59AM 2.52 | 1:20PM 2.42 | 1:36AM 2.60 | ||||||||||||||||||
Low Tide / height (m) | 6:04PM 0.68 | 6:31AM 0.65 | 6:42PM 0.61 | 7:10AM 0.55 | 7:19PM 0.55 | |||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | 7:41 | - | - | - | - | - | - | - | 7:41 | - | - | - | - | - | - | - | 7:43 | - | - | - | - | - | - | - |
| Sunset | - | - | 5:19 | - | - | - | - | - | - | - | 5:20 | - | - | - | - | - | - | - | 5:20 | - | - | - | - | - |
 | |  |  |  |  |  | |  | | | | | | | | | | | | | | | | |
Rain (mm) | 4 | 1 | - | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 13 | 13 | 14 | 14 | 13 | 14 | 13 | 12 | 12 | 14 | 16 | 15 | 14 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 16 | 15 | 14 |
| Feels °C (?) | 1 | 1 | 2 | 2 | 2 | 6 | 6 | 6 | 6 | 8 | 12 | 11 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 15 | 14 | 12 |
- 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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