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:
Matunuck surfForecast / Rhode Island / USA
48hr Weather and Surf, issued 6 am Tuesday 16 Dec 2025 ESTForecast update in hr min s Forecast update imminent
Matunuck surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Matunuck sea temperature is
8.2° C
(Which is slightly cooler than normal)How big are the waves at Matunuck today?
The current surf forecast for Matunuck at 1PM is: 0.9m 6s primary swell from a Southwest direction and 0.2m 11s secondary swell from a South-southeast direction (forecast issued at 06:00am December 16). The wind direction is predicted to be cross-shore.
| Time (EST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | 2.5ft (0.8m) | 5s |
| Afternoon (16 Dec) | 2.5ft (0.8m) | 5s |
| Evening (16 Dec) | 4ft (1.2m) | 5s |
Table - waves today at Matunuck. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Fri 19 | |||||||||||||||||||||
| 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 (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 4 | 5 | 6 | 4 | 5 | 5 | 6 | 6 | 6 | 6 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 5 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 11 | 16 | 35 | 44 | 25 | 41 | 79 | 131 | 191 | 244 | 326 | 434 | 493 | 494 | 300 | 232 | 183 | 113 | 81 | 91 | 89 | 100 | 71 | 144 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross | glass | cross- on | cross- on | on | on | cross- on | on |
High Tide / height (m) | 5:01AM 0.87 | 5:19PM 0.70 | 5:45AM 0.90 | 6:03PM 0.72 | 6:27AM 0.93 | 6:45PM 0.74 | ||||||||||||||||||
Low Tide / height (m) | 11:57AM 0.06 | 11:36PM 0.04 | 12:34PM 0.04 | 12:10AM 0.02 | 1:08PM 0.02 | 12:43AM 0.00 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Fri 19 | |||||||||||||||||||||
| Sunrise | - | - | 7:05 | - | - | - | - | - | - | - | 7:05 | - | - | - | - | - | - | - | 7:05 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:16 | - | - | - | - | - | - | - | 4:16 | - | - | - | - | - | - | - | 4:17 | - | - | - |
 |  |  | | | | |  | | |  |  | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | -3 | -3 | -3 | -1 | -1 | -1 | 0 | 1 | 2 | 5 | 6 | 7 | 5 | 4 | 4 | 3 | 1 | 1 | 3 | 5 | 7 | 9 | 11 | 11 |
| Feels °C (?) | -9 | -10 | -9 | -9 | -8 | -8 | -8 | -8 | -7 | -3 | -3 | -2 | -4 | -4 | -3 | -3 | -3 | -2 | -2 | 0 | 2 | 4 | 6 | 6 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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