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:
Double Point surfForecast / CAL – Marin County / USA
48hr Weather and Surf, issued 9 am Tuesday 16 Dec 2025 PSTForecast update in hr min s Forecast update imminent
Double Point surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Double Point sea temperature is
13.0° C
(Which is slightly warmer than usual)How big are the waves at Double Point today?
The current surf forecast for Double Point at 4PM is: 2.0m 12s primary swell from a West direction and 0.3m 13s secondary swell from a Southwest direction (forecast issued at 09:00am December 16). The wind direction is predicted to be cross-onshore.
| Time (PST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | 6ft (1.9m) | 12s |
| Afternoon (16 Dec) | 6.5ft (2.0m) | 12s |
| Evening (16 Dec) | 6ft (1.9m) | 12s |
Table - waves today at Double Point. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Fri 19 | |||||||||||||||||||||
| 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 | 4 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 926 | 1031 | 1132 | 1132 | 1019 | 1002 | 902 | 902 | 902 | 900 | 872 | 875 | 819 | 765 | 664 | 524 | 435 | 521 | 606 | 506 | 426 | 418 | 418 | 496 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | glass | glass | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross | cross- on | cross | cross | cross | cross | cross- off | glass | cross | cross | cross | cross | cross- on | glass | glass |
High Tide / height (m) | 8:19AM 1.28 | 10:39PM 0.91 | 8:51AM 1.29 | 11:25PM 0.94 | 9:25AM 1.30 | 12:05AM 0.96 | ||||||||||||||||||
Low Tide / height (m) | 4:12PM -0.03 | 3:34AM 0.57 | 4:47PM -0.08 | 4:15AM 0.60 | 5:21PM -0.11 | |||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Fri 19 | |||||||||||||||||||||
| Sunrise | - | 7:20 | - | - | - | - | - | - | - | 7:20 | - | - | - | - | - | - | - | 7:20 | - | - | - | - | - | - |
| Sunset | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:52 | - | - | - | - |
 |  | |  |  | | |  | | |  | |  | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 12 | 14 | 17 | 16 | 15 | 15 | 14 | 15 | 14 | 15 | 15 | 13 | 10 | 10 | 10 | 10 | 11 | 13 | 15 | 14 | 13 | 13 | 13 | 13 |
| Feels °C (?) | 10 | 13 | 17 | 16 | 15 | 15 | 14 | 14 | 14 | 15 | 14 | 11 | 8 | 8 | 7 | 7 | 9 | 11 | 12 | 12 | 12 | 12 | 13 | 13 |
- 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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