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:

The current surf forecast for Siesta at 12PM is: 0.3m 5s primary swell from a West-northwest direction (forecast issued at 06:00am December 12). The wind direction is predicted to be cross-offshore.
| Time (EST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 1.5ft (0.4m) | 5s |
| Afternoon (12 Dec) | 1ft (0.3m) | 5s |
| Evening (12 Dec) | 0.5ft (0.2m) | 5s |
Table - waves today at Siesta. (Swell directed towards the surf break)
Friday 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
| 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map | ||||||||||||||||||||||||
| Wave Height (m) & direction (?) | WNW | WNW | WNW | WNW | WNW | WNW | WNW | NW | — | NW | — | — | — | — | — | SE | SE | SSE | S | SSE | NW | S | NNW | NNW |
| Period(s) (?) | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 4 | - | 4 | - | - | - | - | - | 2 | 3 | 3 | 6 | 5 | 3 | 6 | 4 | 5 |
Wave (?)Graph | ||||||||||||||||||||||||
| 18 | 12 | 11 | 5 | 5 | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 | 2 | 1 | 39 | 0 | |
Wind (km/h) | E | E | E | SSE | W | NNW | NNE | E | ESE | E | E | ESE | NW | NNW | E | E | ESE | E | NE | NNW | NNW | NNW | NNE | NNE |
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross- off | glass | on | cross | cross- off | off | cross- off | off | off | cross- off | glass | cross | off | off | cross- off | off | cross- off | cross | cross | cross- off | cross- off | cross- off |
High Tide / height (m) | 5:57AM 0.69 | 7:22PM 0.78 | 7:46AM 0.63 | 7:53PM 0.83 | 9:27AM 0.62 | 8:24PM 0.88 | ||||||||||||||||||
Low Tide / height (m) | 12:27PM 0.40 | 2:07AM 0.44 | 1:05PM 0.47 | 3:11AM 0.35 | 1:43PM 0.52 | |||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Mon 15 | |||||||||||||||||||||
| Sunrise | - | - | 7:09 | - | - | - | - | - | - | - | 7:11 | - | - | - | - | - | - | - | 7:11 | - | - | - | - | - |
| Sunset | - | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:37 | - | - | - | - | - | - | - | 5:37 | - | - | - |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 14 | 15 | 18 | 19 | 18 | 19 | 18 | 18 | 18 | 18 | 22 | 22 | 22 | 22 | 21 | 20 | 20 | 20 | 22 | 22 | 20 | 19 | 16 |
| Feels °C (?) | 12 | 10 | 12 | 17 | 18 | 17 | 17 | 15 | 16 | 17 | 17 | 22 | 22 | 21 | 20 | 20 | 20 | 20 | 20 | 21 | 18 | 15 | 15 | 10 |

70-foot plus waves predicted for Portuguese big wave tow surfing competition.

Surf-forecast is providing a free, all-access pass to our premium features and 12-day forecasts all weekend.

Previously used in our snow jackets for mountain conditions, PrimaLoft® technology is making its debut in the surf industry. The aim is to bring mountain-grade warmth to the waves.

Surf-Forecast recently helped the 21-year-old Canadian pro surfer and adventurer score some cold water perfection at home.
Discover more articles and updates in the Greenroom.
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Siesta surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.

