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:
Rincon - Rivermouth surfForecast / CAL – Ventura / USA
48hr Weather and Surf, issued 9 am Saturday 13 Dec 2025 PSTForecast update in hr min s Forecast update imminent
Rincon - Rivermouth surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Rincon - Rivermouth sea temperature is
17.1° C
(Which is 2.4°C warmer than normal for this time of year)How big are the waves at Rincon - Rivermouth today?
The current surf forecast for Rincon - Rivermouth at 1PM is: 0.5m 13s primary swell from a West-northwest direction (forecast issued at 09:00am December 13). An open ocean swell of 0.3m 12s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (PST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 2ft (0.6m) | 13s |
| Afternoon (13 Dec) | 1.5ft (0.5m) | 13s |
| Evening (13 Dec) | 1.5ft (0.4m) | 12s |
Table - waves today at Rincon - Rivermouth. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| 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) (?) | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 15 | 15 | 12 | 12 | 12 | 14 | 13 | 13 | 13 | 10 | 10 | 10 | 6 | 6 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 137 | 135 | 95 | 92 | 85 | 56 | 56 | 47 | 47 | 33 | 33 | 28 | 28 | 26 | 29 | 28 | 28 | 28 | 18 | 17 | 16 | 31 | 25 | 25 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross | cross- off | cross- off | off | off | off | off | off | cross- off | cross- off | cross- off | off | off | off | cross- off | cross- off | glass | cross- off | off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 5:14AM 1.53 | 5:42PM 0.99 | 5:46AM 1.61 | 6:56PM 0.98 | 6:15AM 1.67 | 7:57PM 1.01 | ||||||||||||||||||
Low Tide / height (m) | 12:04PM 0.38 | 11:01PM 0.47 | 12:53PM 0.19 | 11:40PM 0.59 | 1:34PM 0.03 | 12:17AM 0.68 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| Sunrise | 6:54 | - | - | - | - | - | - | - | 6:54 | - | - | - | - | - | - | - | 6:56 | - | - | - | - | - | - | - |
| Sunset | - | - | - | 4:47 | - | - | - | - | - | - | - | 4:47 | - | - | - | - | - | - | - | 4:49 | - | - | - | - |
 | | | |  |  | | | | | | |  | | | | | |  | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 17 | 20 | 21 | 20 | 18 | 19 | 19 | 18 | 18 | 21 | 22 | 20 | 19 | 19 | 19 | 19 | 18 | 24 | 24 | 23 | 20 | 21 | 20 | 19 |
| Feels °C (?) | 16 | 19 | 20 | 20 | 17 | 18 | 18 | 16 | 16 | 19 | 20 | 19 | 18 | 17 | 17 | 16 | 15 | 21 | 20 | 20 | 16 | 16 | 15 | 15 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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