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:
Sandvik surfForecast / Reykjanes Peninsula / Iceland
48hr Weather and Surf, issued 11 pm Tuesday 16 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Sandvik surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Sandvik sea temperature is
7.3° C
(Which is normal for this time of year)How big are the waves at Sandvik today?
The current surf forecast for Sandvik at 3AM is: 1.3m 12s primary swell from a Southwest direction and 1.1m 8s secondary swell from a South direction (forecast issued at 11:00pm December 16). An open ocean swell of 3.0m 7s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 11ft (3.5m) | 11s |
| Afternoon (17 Dec) | 11ft (3.5m) | 10s |
| Evening (17 Dec) | 25ft (7.5m) | 20s |
Table - waves today at Sandvik. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | ||||||||||||||||||||||
| 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 | 3 PM | 6 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 10 | 11 | 11 | 10 | 22 | 20 | 19 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 13 | 12 | 12 | 11 | 11 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 970 | 748 | 455 | 947 | 2570 | 2820 | 2239 | 3888 | 42581 | 47123 | 46924 | 39703 | 28174 | 16088 | 9217 | 6560 | 3781 | 3622 | 1735 | 1671 | 991 | 1008 | 689 | 634 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | off | off | cross- off | off | off | cross- off | off | off | off | off | off | off | off | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off |
High Tide / height (m) | 4:26AM 2.72 | 4:42PM 2.51 | 5:05AM 2.86 | 5:21PM 2.60 | 5:42AM 2.97 | 5:58PM 2.68 | ||||||||||||||||||
Low Tide / height (m) | 10:05PM 0.72 | 10:41AM 0.75 | 10:45PM 0.64 | 11:21AM 0.65 | 11:22PM 0.55 | 11:57AM 0.57 | ||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | - | 11:15 | - | - | - | - | - | - | - | 11:15 | - | - | - | - | - | - | - | 11:17 | - | - |
| Sunset | - | - | - | - | - | - | 3:37 | - | - | - | - | - | - | - | 3:37 | - | - | - | - | - | - | - | 3:37 | - |
 |  | |  |  |  | | | | | | | |  |  |  | | | | | |  | | | |
Rain (mm) | - | - | - | 3 | 6 | 1 | 1 | - | 1 | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 4 | 4 | 4 | 4 | 5 | 5 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 5 | 5 | 5 |
| Feels °C (?) | -7 | -9 | -10 | -11 | -5 | -5 | -7 | -6 | -5 | -5 | -5 | -4 | -5 | -4 | -4 | -3 | -3 | -2 | -1 | -1 | -1 | 0 | 0 | -1 |
- 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 Sandvik 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