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.
- Forecast
- Maps
- Live
- Weather State
- Spot Information
Isla Santa Maria Surf Forecast
/ Antofagasta (21 surf breaks) /
Surf Forecasts:
Isla Santa Maria surfForecast / Antofagasta / Chile
12 Day Weather and Surf, issued 8 am Saturday 13 Dec 2025 -04Forecast update in hr min s Forecast update imminent
Isla Santa Maria surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Isla Santa Maria sea temperature is
17.5° C
(Which is 2.2°C colder than average for this time of year)Best Forecast Surf Conditions for Isla Santa Maria this week:
The surf forecast for Isla Santa Maria over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Dec 13) at 9PM. The primary swell is predicted to be 1.0m and 11s period with a secondary swell of 0.5m and 13s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Isla Santa Maria in the next 12 days are 2.4m 12s and forecast to arrive on Tuesday (Dec 16) at 9PM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Sat 13th Dec) | 3.5ft (1.0m) 11s |
| Best Surf | 12AM (Tue 16th Dec) | 7ft (2.2m) 12s |
| Most Powerful | 9PM (Tue 16th Dec) | 8ft (2.4m) 12s |
Table - best surf conditions forecast for Isla Santa Maria over the next 12 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Mostly dry. Very mild (max 19°C on Sat morning, min 17°C on Sat night). Winds decreasing (fresh winds from the SSW on Mon afternoon, calm by Mon night). | Days 3-6 Weather Summary Mostly dry. Warm (max 20°C on Wed morning, min 17°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 11 | 11 | 15 | 13 | 12 | 12 | 12 | 11 | 11 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 16 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 319 | 314 | 247 | 207 | 314 | 796 | 771 | 1163 | 1338 | 1214 | 1388 | 1483 | 1175 | 862 | 637 | 530 | 483 | 353 | 226 | 207 | 251 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross- off | cross- off | cross | cross- off | cross | cross | cross- off | cross- on | cross- on | cross- on | glass | cross- on | glass | glass | cross- on | glass | glass | cross | cross- off |
High Tide / height (m) | 6:22PM 0.89 | 6:00AM 0.80 | 7:10PM 0.95 | 6:58AM 0.74 | 7:52PM 1.01 | 7:53AM 0.70 | 8:31PM 1.06 | 8:43AM 0.68 | 9:08PM 1.11 | 9:29AM 0.66 | 9:46PM 1.14 | 10:11AM 0.66 | 10:24PM 1.17 | ||||||||
Low Tide / height (m) | 11:45AM 0.16 | 12:27AM 0.38 | 12:27PM 0.18 | 1:34AM 0.35 | 1:07PM 0.20 | 2:30AM 0.30 | 1:44PM 0.21 | 3:18AM 0.24 | 2:22PM 0.21 | 4:00AM 0.20 | 2:59PM 0.21 | 4:40AM 0.16 | 3:36PM 0.20 | ||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | Friday 19 | |||||||||||||||
| Sunrise | 6:48 | - | - | 6:50 | - | - | 6:50 | - | - | 6:50 | - | - | 6:50 | - | - | 6:50 | - | - | 6:50 | - | - |
| Sunset | - | 8:22 | - | - | 8:22 | - | - | 8:23 | - | - | 8:24 | - | - | 8:24 | - | - | 8:25 | - | - | 8:25 | - |
 | |  | | | | | |  | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 19 | 19 | 17 | 19 | 19 | 17 | 18 | 18 | 17 | 19 | 19 | 19 | 20 | 20 | 19 | 19 | 20 | 18 | 19 | 20 | 18 |
| Feels °C (?) | 18 | 17 | 16 | 18 | 16 | 14 | 15 | 14 | 15 | 18 | 18 | 20 | 19 | 19 | 19 | 18 | 19 | 18 | 18 | 18 | 17 |
- 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 Isla Santa Maria 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.
false
Information about the Isla Santa Maria Surf forecast
The above surf forecast table for Isla Santa Maria provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Isla Santa Maria can be found by selecting the local surf guide option on the grey menu. Our Isla Santa Maria surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Isla Santa Maria) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Isla Santa Maria may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a holiday in Antofagasta? If you are looking for accommodation near Isla Santa Maria, camping, hotels and holiday cottages in Antofagasta, consider staying in Antofagasta which is 35 km (22 miles) away. Alternatively, find information about places to stay and car hire in Mejillones which is 39 km (24 miles) away
Nearest