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:
Belgas surfForecast / Peniche / Portugal
48hr Weather and Surf, issued 5 pm Tuesday 16 Dec 2025 WETForecast update in hr min s Forecast update imminent
Belgas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Belgas sea temperature is
15.7° C
(Which is slightly cooler than normal)How big are the waves at Belgas today?
The current surf forecast for Belgas at 11PM is: 4.0m 14s primary swell from a West-northwest direction and 2.2m 8s secondary swell from a North direction (forecast issued at 05:00pm December 16). The wind direction is predicted to be cross-onshore.
| Time (WET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | - | - |
| Afternoon (16 Dec) | 18ft (5.5m) | 13s |
| Evening (16 Dec) | 15ft (4.5m) | 14s |
Table - waves today at Belgas. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 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 | 9 AM | 12 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 24 | 22 | 21 | 19 | 19 | 18 | 17 | 17 | 16 | 16 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 10933 | 7192 | 7399 | 5526 | 5656 | 4863 | 3901 | 3184 | 2860 | 2402 | 1879 | 1764 | 1735 | 3129 | 15680 | 17484 | 15642 | 15643 | 13271 | 13709 | 11380 | 10724 | 10811 | 10256 |
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 | cross | cross- on | cross | cross- off | off | cross- off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- on | cross- on | cross- on | cross- on |
High Tide / height (m) | 12:21PM 2.29 | 12:44AM 2.42 | 1:04PM 2.35 | 1:22AM 2.52 | 1:43PM 2.42 | 1:59AM 2.60 | ||||||||||||||||||
Low Tide / height (m) | 6:28PM 0.68 | 6:55AM 0.65 | 7:07PM 0.62 | 7:34AM 0.55 | 7:44PM 0.55 | 8:12AM 0.47 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 7:50 | - | - | - | - | - | - | - | 7:50 | - | - | - | - | - | - | - | 7:52 | - |
| Sunset | 5:14 | - | - | - | - | - | - | - | 5:14 | - | - | - | - | - | - | - | 5:15 | - | - | - | - | - | - | - |
 |  |  | | | |  | | | | | | | | | | |  |  |  | | |  | | |
Rain (mm) | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 6 | 2 | - | - | - |
| Temp. °C | 13 | 13 | 14 | 14 | 13 | 13 | 12 | 12 | 13 | 13 | 12 | 12 | 12 | 11 | 11 | 13 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 13 |
| Feels °C (?) | 2 | 3 | 5 | 7 | 7 | 8 | 8 | 9 | 10 | 11 | 10 | 9 | 9 | 8 | 7 | 9 | 10 | 9 | 9 | 9 | 5 | 5 | 6 | 6 |
- 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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