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:
Praia do Guincho surfForecast / Lisboa / Portugal
48hr Weather and Surf, issued 5 pm Sunday 14 Dec 2025 WETForecast update in hr min s Forecast update imminent
Praia do Guincho surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Praia do Guincho sea temperature is
16.1° C
(Which is slightly cooler than normal)How big are the waves at Praia do Guincho today?
The current surf forecast for Praia do Guincho at 9PM is: 2.4m 14s primary swell from a West-northwest direction (forecast issued at 05:00pm December 14). The wind direction is predicted to be cross-offshore and the swell rating is 4.
| Time (WET) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | - | - |
| Afternoon (14 Dec) | 7.5ft (2.3m) | 13s |
| Evening (14 Dec) | 8ft (2.4m) | 14s |
Table - waves today at Praia do Guincho. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | |||||||||||||||||||||
| 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 | 13 | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 9 | 10 | 10 | 11 | 11 | 11 | 11 | 13 | 14 | 14 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1783 | 1859 | 2153 | 2259 | 2281 | 2148 | 2088 | 1821 | 1630 | 1467 | 1408 | 3331 | 2387 | 4342 | 5665 | 7433 | 8413 | 7955 | 7222 | 5529 | 5953 | 4642 | 5031 | 4107 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | off | cross- off | cross- off | cross | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross | cross | cross | cross | cross- off |
High Tide / height (m) | 11:06PM 2.20 | 11:24AM 2.23 | 11:53PM 2.30 | 12:12PM 2.28 | 12:34AM 2.40 | |||||||||||||||||||
Low Tide / height (m) | 4:49PM 0.77 | 5:14AM 0.84 | 5:36PM 0.73 | 6:03AM 0.74 | 6:18PM 0.67 | 6:46AM 0.64 | ||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 7:48 | - | - | - | - | - | - | - | 7:48 | - | - | - | - | - | - | - | 7:48 | - |
| Sunset | 5:15 | - | - | - | - | - | - | - | 5:16 | - | - | - | - | - | - | - | 5:16 | - | - | - | - | - | - | - |
 |  | | | | | |  | |  |  |  | | | | |  |  | | | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | 1 | 1 | 2 | 9 | 2 | 3 | 4 | 1 | 1 | 1 | - | - | - | - | - | - | - |
| Temp. °C | 16 | 15 | 15 | 14 | 13 | 13 | 14 | 15 | 14 | 14 | 12 | 13 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 |
| Feels °C (?) | 12 | 13 | 13 | 12 | 11 | 11 | 12 | 13 | 8 | 7 | 4 | 4 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 3 | 4 | 5 | 7 | 9 |
- 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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