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:
Miramar surfForecast / Buenos Aires / Argentina
48hr Weather and Surf, issued 8 am Saturday 13 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Miramar surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Miramar sea temperature is
18.7° C
(Which is 2.4°C warmer than normal for this time of year)How big are the waves at Miramar today?
The current surf forecast for Miramar at 12PM is: 0.8m 10s primary swell from a East-southeast direction and 0.3m 11s secondary swell from a Southeast direction, 0.8m 4s secondary swell from a Southwest direction (forecast issued at 08:00am December 13). The wind direction is predicted to be cross-shore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 3ft (0.9m) | 10s |
| Afternoon (13 Dec) | 2.5ft (0.7m) | 10s |
| Evening (13 Dec) | 2.5ft (0.8m) | 9s |
Table - waves today at Miramar. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| 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 | 9 PM | 0 AM | 3 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 10 | 10 | 9 | 10 | 8 | 8 | 8 | 10 | 9 | 9 | 9 | 12 | 12 | 11 | 10 | 10 | 10 | 6 | 7 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 170 | 170 | 133 | 102 | 98 | 100 | 72 | 69 | 68 | 70 | 96 | 88 | 62 | 42 | 47 | 93 | 198 | 177 | 314 | 455 | 263 | 349 | 287 | 280 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | cross- off | cross | cross- off | cross- on | on | cross- on | cross- off | cross- off | off | off | off | cross | cross- off | cross- off | cross- off | off | cross- off | cross | cross | cross | cross | cross | cross |
High Tide / height (m) | 1:57PM 1.14 | 2:43AM 1.03 | 3:00PM 1.06 | 3:30AM 1.06 | 4:02PM 1.01 | |||||||||||||||||||
Low Tide / height (m) | 8:16AM 0.44 | 8:59PM 0.33 | 9:17AM 0.43 | 9:42PM 0.41 | 10:15AM 0.39 | 10:22PM 0.47 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| Sunrise | 5:20 | - | - | - | - | - | - | - | 5:20 | - | - | - | - | - | - | - | 5:20 | - | - | - | - | - | - | - |
| Sunset | - | - | - | - | 8:08 | - | - | - | - | - | - | - | 8:08 | - | - | - | - | - | - | - | 8:09 | - | - | - |
 |  | | | |  |  | | | | | | | | |  |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 21 | 23 | 22 | 19 | 18 | 18 | 17 | 15 | 16 | 20 | 21 | 23 | 19 | 17 | 17 | 15 | 14 | 21 | 20 | 19 | 17 | 16 | 16 | 15 |
| Feels °C (?) | 17 | 17 | 13 | 16 | 16 | 14 | 13 | 13 | 14 | 15 | 16 | 20 | 18 | 16 | 15 | 12 | 9 | 14 | 12 | 12 | 9 | 10 | 9 | 9 |
- 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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