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 Southerndown at 12PM is: 1.7m 11s primary swell from a West-southwest direction and 0.5m 4s secondary swell from a South direction (forecast issued at 05:00am December 15). The wind direction is predicted to be cross-onshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 7ft (2.1m) | 11s |
| Afternoon (15 Dec) | 5.5ft (1.7m) | 13s |
| Evening (15 Dec) | 4.5ft (1.3m) | 13s |
Table - waves today at Southerndown. (Swell directed towards the surf break)
Monday 15 | Tuesday 16 | Wednesday 17 | Thu 18 | |||||||||||||||||||||
| 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 | 3 PM | 6 PM | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map | ||||||||||||||||||||||||
| Wave Height (m) & direction (?) | WSW | SW | SW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | WSW | SW | SW | SW | WSW |
| Period(s) (?) | 11 | 11 | 11 | 11 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 8 | 9 | 11 | 12 |
Wave (?)Graph | ||||||||||||||||||||||||
| 1450 | 1351 | 1103 | 780 | 890 | 784 | 624 | 613 | 597 | 624 | 557 | 549 | 542 | 452 | 446 | 433 | 433 | 433 | 440 | 198 | 291 | 777 | 1457 | 1635 | |
Wind (km/h) | SSW | SSW | SSW | S | S | SSE | WNW | NW | NW | NW | NW | NW | WNW | NW | WNW | SW | SSW | SSW | S | SSW | S | S | SSW | SW |
| 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- off | cross | cross | cross- off | cross | cross | cross | glass | glass | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on |
High Tide / height (m) | 2:42AM 6.51 | 3:07PM 6.68 | 3:36AM 6.76 | 3:59PM 6.90 | 4:23AM 7.08 | 4:44PM 7.18 | ||||||||||||||||||
Low Tide / height (m) | 8:49AM 2.57 | 9:18PM 2.39 | 9:42AM 2.36 | 10:05PM 2.18 | 10:29AM 2.09 | 10:48PM 1.94 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thu 18 | |||||||||||||||||||||
| Sunrise | - | - | 8:11 | - | - | - | - | - | - | - | 8:12 | - | - | - | - | - | - | - | 8:14 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:05 | - | - | - | - | - | - | - | 4:05 | - | - | - | - | - | - | - | 4:06 | - | - | - |
Rain (mm) | 7 | 9 | 6 | 2 | 5 | 2 | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 4 |
| Temp. °C | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 9 | 8 | 7 | 7 | 8 | 8 | 8 | 7 | 7 | 7 | 7 | 7 | 9 | 10 | 10 | 10 | 11 |
| Feels °C (?) | 4 | 4 | 6 | 5 | 6 | 4 | 8 | 5 | 4 | 3 | 3 | 5 | 5 | 5 | 5 | 5 | 4 | 3 | 2 | 3 | 3 | 2 | 1 | 5 |

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 Southerndown 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.

