Matanzas Surf Break

Lat Long: 33.96° S 71.89° W

Matanzas Surf Forecast and Surf Report

Issued: 8 am 12 Sep 2026 (local time)

Forecast update in  hr  min

Today's Matanzas sea temperature is
13.4°C
0.5° 

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


Matanzas surf forecast from 12 Sep 2026:

  • Best quality surf: Sunday 13 Sep, 12AM (local time) - 4.5ft (1.3m), 8s period, SW swell with cross-offshore winds.
  • Most powerful swell: Monday 14 Sep, 12AM (local time) - 4ft (1.2m), 16s period, WSW swell with 715 kJ wave energy.
  • Next surfable swell (1★+): Sunday 13 Sep, 12AM (local time) - 4.5ft (1.3m), 8s period with SW 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 Sunday (Sep 13) at 12AM. The primary swell is predicted to be 1.3m and 8s period with a secondary swell of 0.8m and 10s. 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 1.2m 16s and forecast to arrive on Monday (Sep 14) at 12AM. 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+)12AM (Sun 13th Sep)4.5ft (1.3m) 8s
Best Surf12AM (Sun 13th Sep)4.5ft (1.3m) 8s
Most Powerful12AM (Mon 14th Sep)4ft (1.2m) 16s

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


The Lowdown

Alright surfers, Rusty here. Let’s get into it. For the next couple of weeks, Matanzas is going to be a bit of a mixed bag, but there are a few golden windows worth paddling out for.

We start off with a nice little pulse of SW swell rolling in on Saturday the 12th, with clean morning conditions. The water temp is sitting at 56°F, which is about average for the time of year, so no surprises there. The morning sees 5ft of SW swell at an 8-second period, which is a bit short and junky, but with a light cross-off breeze it’ll be rideable. The combined energy is moderate (379), so there’s some push. Sunday the 13th is the real standout of the first week. The morning brings a clean 2ft WSW groundswell with a whopping 18-second period. That's proper long-period energy, meaning long, waiting sets, but when they come, they’ll be smooth and lined up perfectly for this reef. It’s a challenge for the paddle-out but the rewards are there. The energy reading is strong (582), so don’t let the small height fool you. Light cross-off wind and clean conditions make this a top pick.

Monday the 14th holds some shape with 4ft of WSW at 14 seconds, but it gets messy in the afternoon. You want the morning sessions this whole week. Tuesday the 15th morning is another clean one with 4ft at 13 seconds, very good surf. Wednesday the 16th is small, only 2ft, but clean. Thursday the 17th morning, it’s glassy with 2ft. Hardly a standout, but sometimes you just need to get wet.

Now, moving into the second week. On Monday the 21st, there’s a clean 5ft, but the period drops to 9 seconds – a bit fickle. The real highlight up ahead is Tuesday the 22nd morning. We get a solid 6ft of SW swell with a 9-second period, and it’s clean with light cross-off winds. The energy is strong (508). That’s your best bet for the later part of the forecast, but remember, this is a long-range call, so keep an eye on it. Thursday the 24th afternoon picks up a clean 3ft with a 12-second period, not big but clean.

There are big gaps of poor afternoons with onshore wind, especially from the 20th to the 24th, where the swell and wind just don’t line up. Don't bother with the afternoons. Stick to the early sessions. A lot of those mornings are clean, and while Matanzas is very consistent, the quality varies.

Where the wind is light and from the SSE or ENE, you get clean cross-off conditions. That’s the ticket here. The swell direction from the SW and WSW is straight into the exposed reef, and since the optimum direction is SW, any of those pulses are hitting it right on the nose. Crowds are a factor here, as it’s reef and it gets busy. Expect company, especially on the good days.

This is Rusty, signing off.

Short Range Forecast

Mostly dry. Very mild (max 18°C on Mon afternoon, min 9°C on Sat morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 20°C on Tue afternoon, min 11°C on Wed night). Wind will be generally light.

Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
0
3
3
1
2
2
0
1
3
0
2
1
1
1
1
0
1
1
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
SW
8
1.3
SW
9
1.3
SW
8
0.7
WSW
18
0.9
WSW
17
1.2
WSW
16
1.3
WSW
14
1.3
WSW
14
1.3
WSW
13
1.2
WSW
13
1.1
WSW
12
0.9
WSW
12
0.6
WSW
12
0.8
WSW
12
0.7
WSW
11
0.6
WSW
11
0.9
WSW
13
0.9
WSW
12
0.9
WSW
11
1
WSW
11
1.3
WSW
11
Wave Graph
Metric surfscale
Energy kJ
346
238
233
280
428
715
687
613
534
476
341
243
96
177
101
90
238
250
214
234
379
Wind (km/h)
10
SSE
20
SSW
15
SSE
10
SE
15
SW
10
S
10
S
20
SW
15
S
15
SSE
15
SSW
0
SSE
10
NNE
10
NNW
5
ENE
5
SSE
10
SW
15
SSW
10
S
25
SSW
20
SSW
Wind State
cross-off
cross-on
cross-off
cross-off
cross-on
cross
cross
cross-on
cross
cross-off
cross-on
glassy
cross-off
cross
glassy
glassy
cross-on
cross
cross
cross-on
cross
High Tide
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
3:15PM0.78m
3:46AM1.11m
4:31PM0.69m
Low Tide
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
9:43AM0.40m
8:45PM0.44m
11:10AM0.46m
9:39PM0.52m
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:50
7:50
7:48
7:47
7:46
7:43
7:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:36
7:37
7:37
7:37
7:38
7:39
7:39
 mm
Temp °C
12
15
13
14
14
12
15
18
15
18
20
15
14
15
12
15
15
13
15
16
13
Feels °C
8
10
9
12
10
8
12
14
11
15
17
13
12
13
11
14
13
11
12
12
9
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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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