Matanzas Surf Break

Lat Long: 33.96° S 71.89° W

Matanzas Surf Forecast and Surf Report

Issued: 8 am 10 Sep 2026 (local time)

Forecast update in  hr  min

Today's Matanzas sea temperature is
13.3°C
0.4° 

Matanzas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Matanzas surf forecast from 10 Sep 2026:

  • Best quality surf: Saturday 12 Sep, 3AM (local time) - 6.5ft (2.0m), 9s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Monday 14 Sep, 6AM (local time) - 4.5ft (1.4m), 15s period, WSW swell with 811 kJ wave energy.
  • Next surfable swell (1★+): Friday 11 Sep, 9AM (local time) - 3.5ft (1.0m), 12s period with WSW swell.

Best Forecast Surf Conditions for Matanzas this week:

The surf forecast for Matanzas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Sep 11) at 9AM. The primary swell is predicted to be 1.0m and 12s period with a secondary swell of 0.5m and 5s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Matanzas in the next 16 days are 1.4m 15s and forecast to arrive on Monday (Sep 14) at 6AM. Winds are predicted to be cross-shore at the time the swell arrives.

Wave TypeTime (-04) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Fri 11th Sep)3.5ft (1.0m) 12s
Best Surf 3AM (Sat 12th Sep)6.5ft (2.0m) 9s
Most Powerful 6AM (Mon 14th Sep)4.5ft (1.4m) 15s

Table - best surf conditions forecast for Matanzas over the next 16 days.


The Lowdown

Alright folks, Rusty here with a look at what's cooking at Matanzas. We’ve got a bit of a mixed bag over the next couple weeks, but if you time it right, you'll score some real gems.

The start of the run is pretty average with light, messy cross-shore winds and small waves, but don't get discouraged – there’s a clean stretch coming this weekend and into next week that'll have the place looking proper. The water temp is about 56°F which is pretty standard for this time of year.

Saturday the 12th of September is where it gets interesting. The morning is a standout: clean, light cross-offshore breezes, and a solid 6ft swell pushing in from the SW. It’s short-period stuff at 8 seconds, so it'll be a bit crumbly and not holding much punch, but it’s miles better than the junk we’ve had earlier. The combined energy is moderate (483). Good for the intermediate crew, but beginners might find 6ft a bit heavy.

If you can get out Sunday morning the 13th, it's even better. The swell is a touch smaller at 5ft from the SW, but the period has stretched to 9 seconds, the winds are light cross-off again, and the combined energy is up at (626). That’s a sweet spot for a morning session.

But the one you want to circle on the calendar is Monday morning the 14th. The ocean is forecast to go glassy. The swell has backed off to 5ft, but it's from the WSW with a long period of 14 seconds, which is proper groundswell. The combined energy is strong at (976). This is the kind of day Matanzas lives for – clean, lined-up, and with some real push. Get in the water early.

The good run keeps rolling into Tuesday the 15th morning with clean 4ft waves at (552), and again on Thursday the 17th with a glassy dawn and 4ft short-period swell. Not big, but clean and fun.

Looking further out, there’s a notable pulse of energy hitting around Saturday the 20th of September with a 7ft SW swell and a combined energy of (1148), meaning there’s a lot of water moving. But it's getting smashed by 18 mph cross-shore wind. That’s a lumpy, choppy mess and honestly, it looks more interesting for kite surfing than a paddle session. Experts only, if anyone bothers.

The forecast really peaks again for the final standout: Thursday morning the 24th of September. Clean, light cross-off winds, a solid 5ft swell from the WSW with a moderate period of 12 seconds, and a combined energy of (987). That’s a cracking window.

And the best of the entire outlook? Friday morning the 25th of September. Glassy conditions, a 4ft swell, but with a very long period of 14 seconds from the SW, and a combined energy of (1126). That’s excellent, powerful groundswell on a reef, perfect for experienced surfers who know how to handle the longer lulls and the juice when it arrives. It's a long way out, so treat it as a promising possibility, but it's got special written all over it.

So bottom line: the next few days are a write-off. The gold is Monday 14th morning and Friday 25th morning. Don't miss 'em.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 14°C on Thu afternoon, min 9°C on Fri night). Winds decreasing (fresh winds from the SSW on Fri afternoon, calm by Sat night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 18°C on Mon afternoon, min 11°C on Sun morning). Wind will be generally light.

Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
1
2
0
0
3
0
3
3
1
2
3
1
3
3
0
1
2
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1
WSW
13
1
WSW
13
1
WSW
12
1
WSW
12
0.9
WSW
12
1.2
WSW
10
1.8
SW
9
1.4
SW
9
1.3
SW
9
1.4
SW
9
0.9
WSW
17
1.2
WSW
16
1.4
WSW
14
1.4
WSW
14
1.3
WSW
13
1.2
WSW
13
1.1
WSW
11
0.9
WSW
12
0.8
WSW
12
1.1
SW
8
1.5
SW
7
Wave Graph
Metric surfscale
Energy kJ
357
362
309
294
231
316
471
268
269
300
423
715
789
704
526
476
319
222
180
128
212
Wind (km/h)
10
S
15
SW
5
S
10
SSE
25
SSW
20
SSW
10
SSE
15
SW
5
SSE
10
ESE
15
SW
10
SSW
5
SE
15
SW
10
SE
10
SSE
15
SSW
10
SSW
0
SSW
10
WSW
15
S
Wind State
cross
cross-on
cross
cross-off
cross-on
cross-on
cross-off
cross-on
glassy
cross-off
cross-on
cross-on
cross-off
cross-on
cross-off
cross-off
cross-on
cross
glassy
on
cross
High Tide
10:39AM1.52m
11:09PM1.19m
11:19AM1.49m
11:45PM1.27m
11:57AM1.41m
00:20AM1.31m
12:34PM1.30m
00:55AM1.33m
1:10PM1.17m
1:31AM1.31m
1:47PM1.03m
2:09AM1.26m
2:27PM0.90m
2:51AM1.18m
Low Tide
5:08PM-0.03m
5:00AM0.05m
5:40PM-0.03m
5:43AM0.04m
6:12PM0.01m
6:26AM0.07m
6:41PM0.08m
7:09AM0.13m
7:11PM0.16m
7:53AM0.21m
7:40PM0.26m
8:42AM0.31m
8:10PM0.35m
cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:54
7:52
7:50
7:50
7:48
7:47
7:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:35
7:36
7:36
7:37
7:37
7:37
7:38
 mm
Temp °C
13
14
11
13
14
10
12
13
12
15
16
13
15
18
15
17
18
14
14
14
12
Feels °C
11
11
8
9
9
4
9
9
8
13
13
10
12
15
12
14
15
12
14
12
10
  • Map Icons:
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  • 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 Matanzas Surf forecast

The above surf forecast table for Matanzas provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Matanzas can be found by selecting the local surf guide option on the grey menu. Our Matanzas 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 (Matanzas) 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 Matanzas 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.

Matanzas is 47 km (29 miles) from the city of San Antonio. If you plan a holiday in Santiago, look for hotels and other accommodation in San Antonio. San Antonio has rooms for a wide range of budgets as well as car hire and transport links.

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