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Surf Forecasts:

Isla Santa Maria surfForecast / Antofagasta / Chile

information circle12 Day Weather and Surf, issued 8 pm Monday 09 Mar 2026 -04
Forecast 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
21.9° C
 (Which is slightly warmer than usual)

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 Tuesday (Mar 10) at 6AM. The primary swell is predicted to be 2.4m and 16s period with a secondary swell of 0.8m and 20s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Isla Santa Maria in the next 12 days are 3.0m 17s and forecast to arrive on Friday (Mar 13) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (-04) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Tue 10th Mar)8ft (2.4m) 16s
Best Surf 9AM (Fri 13th Mar)8ft (2.5m) 19s
Most Powerful 9PM (Fri 13th Mar)10ft (3.0m) 17s

Table - best surf conditions forecast for Isla Santa Maria over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table

Short Range Forecast Mostly dry. Warm (max 22°C on Tue morning, min 19°C on Tue night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 21°C on Fri morning, min 19°C on Thu night). Wind will be generally light.

Tuesday
10
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Mon
16
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
5
4
4
5
4
3
4
4
3
4
6
4
6
5
4
4
4
2
4
4
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2.5
SW
2.3
SW
2.5
SW
2.5
SW
2.3
SW
2.3
SW
2.1
SW
1.9
SW
1.8
SW
1.8
SW
2.5
SW
3
SW
3
SW
3
SW
2.5
SW
2.5
SW
2.2
SW
2.1
SW
1.9
SW
1.8
SW
1.7
SSW
Period(s) (?)161617161414131312131918171616151414131312
Wave
Graph
(?)Metric surfscale
Energy kJ (?)31722475392734992247200415911185104210505222540650433832336926842004171213081044808
Wind
(km/h)
10
S
5
SSW
10
SW
15
S
10
S
15
SW
15
S
0
S
15
SW
10
S
5
E
10
WSW
10
S
5
SSE
15
SSW
15
S
5
S
15
WSW
10
S
10
S
15
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off		glasscrosscross-
off		cross-
off		crosscross-
off		glasscrosscross-
off		glasscross-
on		cross-
off		cross-
off		crosscross-
off		glasscross-
on		cross-
off		cross-
off		cross
High Tide
/ height (m)
2:37AM
0.64
3:21PM
0.90
3:47AM
0.56
4:36PM
0.87
5:35AM
0.52
5:59PM
0.88
7:10AM
0.55
7:05PM
0.94
8:03AM
0.60
7:54PM
1.00
8:39AM
0.66
8:33PM
1.07
9:10AM
0.74
Low Tide
/ height (m)
9:08PM
0.34
8:15AM
0.32
10:35PM
0.38
9:05AM
0.37
12:22AM
0.37
10:29AM
0.41
1:37AM
0.31
12:03PM
0.39
2:21AM
0.26
1:09PM
0.35
2:54AM
0.20
1:58PM
0.29
3:21AM
0.14
2:40PM
0.23
Tuesday
10
Wednesday
11
Thursday
12
Friday
13
Saturday
14
Sunday
15
Mon
16
Sunrise-7:41--7:41--7:41--7:43--7:43--7:43--7:43-
Sunset--8:02--8:01--8:00--8:00--7:59--7:58--7:57
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
Rain (mm)
---------------------
Temp. °C212222202121192121192121202121202121192021
Feels °C (?)212222192120182120182220202220192120191920
  • 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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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.

View detailed surf forecast for Isla Santa Maria at:
surf-forecast.com

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

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