Isla Santa Maria surfForecast / Antofagasta / Chile

information circle12 Day Weather and Surf, issued 1 pm Monday 14 Jul 2025 -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
14.9° C
(Which is 1.1°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 Monday (Jul 14) at 5PM. The primary swell is predicted to be 3.0m and 16s period with a secondary swell of 0.6m and 5s. 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 3.0m 16s and forecast to arrive on Tuesday (Jul 15) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Tuesday (Jul 15) at 8PM.

Wave TypeTime (-04) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Mon 14th Jul)10ft (3.0m) 16s
Best Surf11PM (Mon 14th Jul)8ft (2.5m) 15s
Most Powerful 2AM (Tue 15th Jul)10ft (3.0m) 16s

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

Updates in  hr  min  s Forecast update imminent
Mon
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Sat
26
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
0
Swell
Height Map
Wave Height (m) & direction (?)
3
SW
3
SW
2.5
SW
2.5
SW
1.9
SW
1.7
SW
1.7
SW
2.4
SW
2.3
SSW
2.1
SSW
1.6
SSW
1.4
SW
1.4
SW
2.2
SW
2.1
SW
2.1
SW
1.9
SW
2.1
SW
2.1
SW
1.9
SW
1.8
SW
1.6
SW
1.5
SW
0.9
SW
0.9
SW
1.1
SW
0.9
SSW
1
SW
0.7
SW
1.1
SW
1.5
SW
1.5
SW
2.2
SW
2
SSW
2.2
SSW
2.5
SSW
Period(s) (?)161616151514141111111013141514141415141313131212118881516141312101011
Wave
Graph
(?)Metric surfscale
Energy (?)36554209317828561814170416711388156713089141071144121171862156418131941183613481050855686455348314241225479862113111761611150917541792
Wind
(km/h)
25
S
15
S
25
SSW
25
S
15
S
10
SW
5
SSW
5
N
5
NW
5
SW
5
N
10
SW
10
S
5
SE
15
SSW
15
S
5
ENE
10
SW
15
S
5
SSE
10
SSW
15
S
0
S
5
SW
15
S
15
S
15
S
30
S
20
S
10
SSW
20
S
5
SSE
15
SSW
15
S
15
S
15
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
crosscross-
off
cross-
off
cross-
on
crossglassonglasscrosscrosscross-
off
glasscrosscross-
off
glasscrosscross-
off
glasscrosscross-
off
glasscross-
on
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
crosscross-
off
glasscrosscross-
off
cross-
off
cross
High Tide
/ height (m)
12:30AM
0.75
12:26PM
1.14
1:17AM
0.80
1:08PM
1.05
2:09AM
0.86
1:56PM
0.95
3:06AM
0.92
2:53PM
0.83
4:08AM
0.99
4:03PM
0.73
5:12AM
1.06
5:23PM
0.67
6:16AM
1.14
6:41PM
0.65
7:16AM
1.21
7:48PM
0.66
8:11AM
1.27
8:44PM
0.69
9:01AM
1.32
9:33PM
0.73
9:47AM
1.33
10:19PM
0.76
10:30AM
1.32
Low Tide
/ height (m)
6:37PM
0.08
5:55AM
0.23
7:13PM
0.09
6:49AM
0.28
7:51PM
0.11
7:53AM
0.32
8:32PM
0.13
9:10AM
0.35
9:19PM
0.16
10:38AM
0.34
10:14PM
0.18
12:04PM
0.28
11:16PM
0.19
1:17PM
0.21
12:19AM
0.17
2:17PM
0.13
1:19AM
0.14
3:09PM
0.06
2:13AM
0.10
3:55PM
0.02
3:04AM
0.08
4:37PM
0.00
3:51AM
0.08
Mon
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Saturday
19
Sunday
20
Monday
21
Tuesday
22
Wednesday
23
Thursday
24
Friday
25
Sat
26
Sunrise--7:22--7:22--7:22--7:22--7:22--7:22--7:22--7:20--7:20--7:20--7:20--7:20
Sunset6:12--6:13--6:13--6:14--6:14--6:14--6:15--6:15--6:15--6:15--6:16--6:16--
part cloudpart cloudpart cloudpart cloudpart cloudclearclearclearclearclearclearclearclearpart cloudclearclearclearclearpart cloudpart cloudclearclearpart cloudclearclearpart cloudpart cloudpart cloudpart cloudpart cloudclearclearpart cloudpart cloudclearclear
Rain (mm)
------------------------------------
Temp. °C121212131314141313141313141214141314141214141213141214141313141214141314
Feels °C (?)78881113131312131312121012111213121013121012139111081111911111111

Short Range Forecast: Mostly dry. Very mild (max 14°C on Wed morning, min 12°C on Mon afternoon). Winds decreasing (fresh winds from the SSW on Tue afternoon, calm by Wed night).

Days 3-6 Weather Summary Mostly dry. Very mild (max 14°C on Thu afternoon, min 12°C on Thu night). Wind will be generally light.

Days 6-9 Weather Summary Mostly dry. Very mild (max 14°C on Sun afternoon, min 12°C on Sun night). Wind will be generally light.

Long Range Forecast: Mostly dry. Very mild (max 14°C on Wed afternoon, min 12°C on Wed night). Winds decreasing (fresh winds from the S on Wed afternoon, calm by Thu night).

  • 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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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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