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:
Playa Mariano (Mar del Plata) surfForecast / Buenos Aires / Argentina
48hr Weather and Surf, issued 8 pm Tuesday 16 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Playa Mariano (Mar del Plata) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Playa Mariano (Mar del Plata) sea temperature is
20.3° C
(Which is 3.9°C warmer than normal for this time of year)How big are the waves at Playa Mariano (Mar del Plata) today?
The current surf forecast for Playa Mariano (Mar del Plata) at 4AM is: 1.4m 10s primary swell from a South-southwest direction and 0.2m 7s secondary swell from a East-northeast direction (forecast issued at 08:00pm December 16). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | 3.5ft (1.1m) | 10s |
| Afternoon (17 Dec) | 2.5ft (0.8m) | 10s |
| Evening (17 Dec) | 2ft (0.6m) | 9s |
Table - waves today at Playa Mariano (Mar del Plata). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tue 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| 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) (?) | 7 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 7 | 6 | 8 | 6 | 6 | 4 | 5 | 5 | 12 | 12 | 11 | 11 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 337 | 711 | 657 | 468 | 332 | 235 | 192 | 120 | 84 | 57 | 111 | 58 | 22 | 120 | 75 | 49 | 87 | 116 | 834 | 220 | 240 | 541 | 416 | 255 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- off | off | cross- off | off | off | off | off | cross- off | off | cross | cross- off | cross- off | cross | cross | cross | cross | cross- on | on | cross- on | cross- on | cross | cross |
High Tide / height (m) | 5:15PM 1.13 | 5:36AM 1.28 | 6:09PM 1.06 | 6:11AM 1.35 | 7:00PM 1.01 | 6:44AM 1.41 | ||||||||||||||||||
Low Tide / height (m) | 11:42PM 0.63 | 12:53PM 0.53 | 12:08AM 0.69 | 1:41PM 0.46 | 12:35AM 0.72 | 2:22PM 0.39 | ||||||||||||||||||
Tue 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 5:20 | - | - | - | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:22 | - | - | - |
| Sunset | 8:08 | - | - | - | - | - | - | - | 8:09 | - | - | - | - | - | - | - | 8:09 | - | - | - | - | - | - | - |
 |  | | | |  |  | | |  |  | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | 3 | 5 | 1 | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 14 | 13 | 11 | 11 | 19 | 26 | 29 | 30 | 18 | 17 | 17 | 18 | 20 | 24 | 22 | 19 | 17 | 16 | 16 | 16 | 17 | 18 | 19 |
| Feels °C (?) | 10 | 11 | 10 | 5 | 4 | 11 | 19 | 23 | 25 | 16 | 17 | 17 | 16 | 18 | 21 | 15 | 11 | 11 | 11 | 14 | 14 | 14 | 13 | 14 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
Buy Less, Surf More This Black Friday
Surf-forecast is providing a free, all-access pass to our premium features and 12-day forecasts all weekend.
Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.
Previously used in our snow jackets for mountain conditions, PrimaLoft® technology is making its debut in the surf industry. The aim is to bring mountain-grade warmth to the waves.
Vancouver Island’s Day Of Days With Reed Platenius
Surf-Forecast recently helped the 21-year-old Canadian pro surfer and adventurer score some cold water perfection at home.
Read more
Discover more articles and updates in the Greenroom.
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Playa Mariano (Mar del Plata) surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest