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 pm 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 1AM is: 0.6m 10s primary swell from a East-southeast direction and 0.7m 8s secondary swell from a South-southwest direction (forecast issued at 08:00pm December 13). The wind direction is predicted to be cross-onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | 2.5ft (0.7m) | 8s |
| Afternoon (14 Dec) | 2.5ft (0.8m) | 9s |
| Evening (14 Dec) | 2.5ft (0.8m) | 8s |
Table - waves today at Miramar. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sat 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| 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 | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 9 | 10 | 8 | 8 | 8 | 10 | 9 | 9 | 8 | 8 | 12 | 11 | 10 | 10 | 5 | 7 | 8 | 8 | 8 | 8 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 98 | 69 | 72 | 69 | 65 | 65 | 96 | 94 | 62 | 82 | 72 | 66 | 158 | 177 | 308 | 157 | 369 | 318 | 221 | 202 | 195 | 346 | 327 | 268 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross | cross- off | cross- off | off | off | off | cross- on | on | cross- off | cross- off | off | cross- off | cross | cross | cross | cross | cross | cross | cross- on | cross | cross | cross- on |
High Tide / height (m) | 2:43AM 1.03 | 3:00PM 1.06 | 3:30AM 1.06 | 4:02PM 1.01 | 4:14AM 1.10 | |||||||||||||||||||
Low Tide / height (m) | 8:59PM 0.33 | 9:17AM 0.43 | 9:42PM 0.41 | 10:15AM 0.39 | 10:22PM 0.47 | 11:10AM 0.35 | ||||||||||||||||||
Sat 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 5:20 | - | - | - | - | - | - | - | 5:20 | - | - | - | - | - | - | - | 5:22 | - | - | - |
| Sunset | 8:08 | - | - | - | - | - | - | - | 8:08 | - | - | - | - | - | - | - | 8:09 | - | - | - | - | - | - | - |
 |  |  | | | | | | | | | |  | | | | |  | | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 19 | 18 | 18 | 17 | 17 | 20 | 23 | 24 | 19 | 17 | 17 | 15 | 15 | 21 | 20 | 19 | 17 | 16 | 16 | 15 | 14 | 15 | 16 | 16 |
| Feels °C (?) | 17 | 15 | 15 | 13 | 14 | 15 | 17 | 20 | 16 | 17 | 16 | 12 | 10 | 13 | 12 | 12 | 9 | 10 | 10 | 8 | 7 | 8 | 9 | 10 |
- 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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