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:
Mecana surfForecast / Pacific / Colombia
48hr Weather and Surf, issued 12 am Wednesday 17 Dec 2025 -05Forecast update in hr min s Forecast update imminent
Mecana surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Mecana sea temperature is
27.8° C
(Which is slightly warmer than usual)How big are the waves at Mecana today?
The current surf forecast for Mecana at 4AM is: 0.6m 14s primary swell from a Southwest direction and 0.5m 6s secondary swell from a West-southwest direction (forecast issued at 12:00am December 17). The wind direction is predicted to be cross-offshore.
| Time (-05) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 2ft (0.6m) | 15s |
| Afternoon (17 Dec) | 1.5ft (0.5m) | 15s |
| Evening (17 Dec) | 1ft (0.3m) | 15s |
Table - waves today at Mecana. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | ||||||||||||||||||||||
| 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 | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 62 | 63 | 130 | 134 | 134 | 134 | 75 | 75 | 33 | 54 | 108 | 109 | 109 | 111 | 111 | 111 | 85 | 61 | 59 | 53 | 52 | 52 | 51 | 51 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross | cross- on | cross- on | cross- on | cross- on | cross | cross- off | cross | cross- on | cross- on | on | on | cross- on | cross | cross | cross- off | cross | cross- on | cross- on | on | on |
High Tide / height (m) | 1:34AM 2.87 | 2:16PM 2.73 | 2:18AM 2.94 | 2:58PM 2.83 | 3:00AM 3.01 | 3:37PM 2.91 | ||||||||||||||||||
Low Tide / height (m) | 7:58AM 0.71 | 8:10PM 0.97 | 8:40AM 0.60 | 8:53PM 0.88 | 9:20AM 0.51 | |||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:11 | - | - | - | - | - | - | - | 6:13 | - | - | - | - | - | - | - | 6:13 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 5:58 | - | - | - | - | - | - | - | 5:59 | - | - | - | - | - | - | - | 5:59 | - |
 |  | |  |  | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | 2 | - | - | 3 | 3 | 1 | 1 | 2 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 |
| Temp. °C | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 |
| Feels °C (?) | 29 | 28 | 28 | 28 | 29 | 28 | 29 | 28 | 28 | 28 | 27 | 27 | 29 | 28 | 28 | 28 | 29 | 28 | 28 | 28 | 29 | 28 | 29 | 29 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
Buy Less, Surf More This Black Friday
Surf-forecast is providing a free, all-access pass to our premium features and 12-day forecasts all weekend.
Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.
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.
Vancouver Island’s Day Of Days With Reed Platenius
Surf-Forecast recently helped the 21-year-old Canadian pro surfer and adventurer score some cold water perfection at home.
Read more
Discover more articles and updates in the Greenroom.
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Mecana 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.
Nearest