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:
San Miguel - Ribeira Grande surfForecast / Azores / Portugal
48hr Weather and Surf, issued 4 pm Wednesday 10 Dec 2025 -01Forecast update in hr min s Forecast update imminent
San Miguel - Ribeira Grande surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's San Miguel - Ribeira Grande sea temperature is
18.2° C
(Which is normal for this time of year)How big are the waves at San Miguel - Ribeira Grande today?
The current surf forecast for San Miguel - Ribeira Grande at 10PM is: 3.0m 11s primary swell from a West-southwest direction and 1.0m 13s secondary swell from a North-northwest direction (forecast issued at 04:00pm December 10). An open ocean swell of 0.1m 15s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (-01) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 Dec) | - | - |
| Afternoon (10 Dec) | 5ft (1.6m) | 13s |
| Evening (10 Dec) | 3.5ft (1.1m) | 13s |
Table - waves today at San Miguel - Ribeira Grande. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 13 | 11 | 12 | 12 | 12 | 12 | 15 | 17 | 17 | 17 | 19 | 19 | 18 | 18 | 17 | 17 | 16 | 16 | 15 | 15 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1002 | 659 | 427 | 2432 | 1455 | 1249 | 792 | 1220 | 1983 | 6817 | 7848 | 9843 | 16060 | 18656 | 16724 | 14972 | 12453 | 9574 | 7004 | 5218 | 3778 | 2852 | 2285 | 1906 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | cross- on | cross- on | cross- on | cross | glass | glass | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross |
High Tide / height (m) | 5:54PM 1.15 | 6:20AM 1.32 | 7:01PM 1.10 | 7:25AM 1.25 | 8:11PM 1.09 | 8:30AM 1.21 | ||||||||||||||||||
Low Tide / height (m) | 11:51AM 0.31 | 11:53PM 0.38 | 12:56PM 0.37 | 12:59AM 0.45 | 2:01PM 0.40 | 2:10AM 0.49 | ||||||||||||||||||
Wednesday 10 | Thursday 11 | Friday 12 | Saturday 13 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 7:47 | - | - | - | - | - | - | - | 7:47 | - | - | - | - | - | - | - | 7:48 | - |
| Sunset | - | 5:22 | - | - | - | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:22 | - | - | - | - | - | - |
 | |  |  |  |  |  |  |  | |  | | | | | | | | | | | | | | |
Rain (mm) | 1 | 2 | 3 | 6 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 17 | 17 | 18 | 15 | 14 | 14 | 14 | 15 | 14 | 14 | 15 | 15 | 14 | 14 | 13 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 14 | 15 |
| Feels °C (?) | 9 | 9 | 12 | 9 | 8 | 8 | 8 | 9 | 8 | 9 | 9 | 8 | 7 | 8 | 9 | 12 | 13 | 11 | 11 | 11 | 11 | 10 | 11 | 12 |
- 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 San Miguel - Ribeira Grande 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