Matanzas Surf Break

Lat Long: 33.96° S 71.89° W

Matanzas Surf Forecast and Surf Report

Issued: 8 pm 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 11 Sep 2026:

  • Best quality surf: Sunday 13 Sep, 12AM (local time) - 4.5ft (1.3m), 9s period, SW swell with cross-offshore winds.
  • Most powerful swell: Monday 14 Sep, 9AM (local time) - 4.5ft (1.4m), 14s period, WSW swell with 789 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 0.4m 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 14s and forecast to arrive on Monday (Sep 14) at 9AM. 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 Surf12AM (Sun 13th Sep)4.5ft (1.3m) 9s
Most Powerful 9AM (Mon 14th Sep)4.5ft (1.4m) 14s

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


The Lowdown

G’day, Rusty here. Looks like we’ve got a bit of a slow burner on our hands at Matanzas, but once it gets going, there’s some proper gold to be had.

The overall pattern is a bit of a mixed bag. Early on, the swell is small and clean but nothing to write home about. Then it starts to build, but the wind gets messy through the middle of the period. The real standout is going to be Sunday the 13th – that morning session is the pick of the whole run.

Alright, let’s get into it.

We kick off Friday the 11th with a clean 1.0m groundswell from the WSW at 12 seconds (moderate energy at 307). The wind is a light cross-off from the SSE, so it’s clean but pretty small. Matanzas is a very consistent reef break, exposed to the SW, so it needs a bit more push. That said, it’s a nice gentle start.

Saturday the 12th sees the swell jump to 1.7m from the SW, but the period drops to 8 seconds – shorter period windswell. The morning is clean with a light cross-off, so it’s surfable. Not the best shape, but worth a paddle.

Now for the real standout: Sunday the 13th morning. We’ve got 1.4m from the SW, period 8 seconds, but the winds are light from the SE, cross-off, and it’s clean. The combined energy is strong at 612 – you can feel the push. This is the best on offer. Expect fun, punchy lefts off the reef. Crowds are sometimes an issue here, so you might want to get in early.

The afternoon on Sunday turns a bit tricky – the swell drops back to 0.9m from the WSW, period jumps to 17 seconds (very long period groundswell), but the wind goes cross-on. That long period tends to make beach breaks close out, but Matanzas as a reef can handle it. Just a bit bumpy.

From Monday the 14th through to Friday the 18th it’s a bit of a struggle. The swell hangs around 1.0m to 1.4m, but the wind is mostly cross or cross-onshore, creating chop. The energy readings are moderate (around 300-500 range), but the quality just isn’t there. A few mornings offer a tiny window of cleaner conditions, but nothing worth calling a standout.

We get a reprieve on Wednesday the 16th morning – 0.8m from the WSW at 12 seconds with glassy conditions. That’s a lovely session if you’re after small, clean waves for a longboard. The water temp is around average for this time of year, nothing unusual.

Saturday the 19th and Sunday the 20th bring more of the same – small, messy afternoons. But look at Sunday the 20th morning: 1.2m from the SW, 10 second period, and glassy winds again. That’s another clean, small morning. Not a standout, but a solid session.

Then we get a real late-show surprise. Saturday the 26th morning: 1.7m from the WSW, 8 second period, with a light cross-off from the SSE, clean conditions. The combined energy is solid at 888 – that’s strong. This is the second true standout of the run. It’s a bit far out, so treat it as promising but not locked in. If the wind holds, that’s going to be a ripping morning at Matanzas.

Between Sunday the 13th and Saturday the 26th, there are patches of 3-4 days where the afternoons are write-offs, but the mornings keep giving little windows. The longest gap without any real recommendation is from Monday the 14th through Wednesday the 16th – only the Wednesday morning is worth looking at.

Overall, Matanzas is fairly consistent, so despite the choppy afternoons, it never really goes flat. Stoke is high for those two morning windows: Sunday the 13th and Saturday the 26th.

Keep an eye on that later date. Rusty out.

Short Range Forecast

Mostly dry. Very mild (max 15°C on Sat afternoon, min 8°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

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

Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
2
0
1
2
0
3
3
2
3
2
1
3
2
0
1
2
1
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
WSW
12
1
WSW
12
0.9
WSW
12
1.9
WSW
9
1.7
SW
8
1.4
SW
8
1.3
SW
9
0.7
WSW
18
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
12
1
WSW
12
0.8
WSW
12
0.7
SW
12
0.7
WSW
11
Wave Graph
Metric surfscale
Energy kJ
309
294
231
617
419
286
269
286
428
715
789
704
534
476
324
265
180
142
103
Wind (km/h)
10
SSW
10
SSE
25
SW
20
S
10
SSE
20
SSW
10
SSE
5
SE
10
SW
10
S
10
S
15
SW
10
SSE
15
S
15
SW
10
S
5
SW
10
WSW
15
S
Wind State
cross
cross-off
cross-on
cross
cross-off
cross-on
cross-off
cross-off
cross-on
cross
cross
cross-on
cross-off
cross
cross-on
cross
glassy
cross-on
cross
High Tide
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
5:00AM0.05m
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
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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
11
13
14
11
12
15
13
15
15
13
16
17
14
17
18
14
14
15
12
Feels °C
8
9
8
6
9
11
9
13
12
11
14
14
11
14
15
12
13
13
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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