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:
Islas Marietas surfForecast / Nayarit / Mexico
48hr Weather and Surf, issued 5 pm Tuesday 16 Dec 2025 CSTForecast update in hr min s Forecast update imminent
Islas Marietas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Islas Marietas sea temperature is
27.3° C
(Which is 1.3°C warmer than normal for this time of year)How big are the waves at Islas Marietas today?
The current surf forecast for Islas Marietas at 12AM is: 0.5m 15s primary swell from a Southwest direction and 0.4m 4s secondary swell from a Northwest direction (forecast issued at 05:00pm December 16). The wind direction is predicted to be cross-offshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 1.5ft (0.5m) | 13s |
| Afternoon (17 Dec) | 1.5ft (0.5m) | 13s |
| Evening (17 Dec) | 1.5ft (0.5m) | 13s |
Table - waves today at Islas Marietas. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 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 | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 15 | 15 | 12 | 15 | 15 | 14 | 13 | 12 | 13 | 13 | 13 | 13 | 5 | 5 | 5 | 13 | 12 | 12 | 12 | 12 | 15 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 171 | 171 | 37 | 104 | 104 | 100 | 88 | 14 | 87 | 87 | 87 | 87 | 11 | 9 | 7 | 78 | 74 | 73 | 72 | 72 | 71 | 82 | 78 | 71 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | off | off | cross- off | off | cross- off | cross- off | off | cross- off | off | off | cross- off | cross- off | cross- off | cross- off | glass | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross- off | glass |
High Tide / height (m) | 8:46PM 1.13 | 7:18AM 1.40 | 9:14PM 1.15 | 7:46AM 1.44 | 9:42PM 1.15 | 8:14AM 1.47 | ||||||||||||||||||
Low Tide / height (m) | 2:06PM 0.22 | 1:34AM 0.82 | 2:31PM 0.15 | 1:59AM 0.81 | 2:58PM 0.10 | 2:23AM 0.80 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 7:31 | - | - | - | - | - | - | - | 7:31 | - | - | - | - | - | - | - | 7:33 | - |
| Sunset | - | 6:23 | - | - | - | - | - | - | - | 6:23 | - | - | - | - | - | - | - | 6:24 | - | - | - | - | - | - |
 |  |  | | |  | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 25 | 24 | 24 | 23 | 23 | 23 | 22 | 24 | 24 | 24 | 23 | 22 | 22 | 22 | 22 | 23 | 24 | 24 | 23 | 22 | 22 | 22 | 22 | 24 |
| Feels °C (?) | 25 | 25 | 24 | 24 | 23 | 23 | 23 | 24 | 23 | 24 | 23 | 22 | 23 | 23 | 22 | 24 | 24 | 26 | 24 | 22 | 23 | 22 | 22 | 25 |
- 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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