Matanzas Surf Break

Lat Long: 33.96° S 71.89° W

Matanzas Surf Forecast and Surf Report

Issued: 2 am 08 Sep 2026 (local time)

Forecast update in  hr  min

Today's Matanzas sea temperature is
13.0°C
0.1° 

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


Matanzas surf forecast from 8 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 9AM (local time) - 4.5ft (1.3m), 13s period, SW swell with cross-offshore winds.
  • Most powerful swell: Monday 14 Sep, 12AM (local time) - 4ft (1.2m), 16s period, WSW swell with 671 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 8 Sep, 9AM (local time) - 4.5ft (1.3m), 13s 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 Tuesday (Sep 08) at 9AM. The primary swell is predicted to be 1.3m and 13s period with a secondary swell of 0.3m and 18s. 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+) 9AM (Tue 8th Sep)4.5ft (1.3m) 13s
Best Surf 9AM (Tue 8th Sep)4.5ft (1.3m) 13s
Most Powerful12AM (Mon 14th Sep)4ft (1.2m) 16s

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


The Lowdown

Alright folks, Rusty here. Let’s talk about what’s cooking at Matanzas. This is a consistent reef break that’s exposed to the SW, and it’s got a good run of surf coming our way.

The overall pattern is pretty solid. We’ve got a solid stretch of SW groundswell pushing through, with long periods that’ll be stacking up beautifully on the reef. The water temp is sitting at 55°, which is bang on average for this time of year – no surprises there.

Kicking off Tuesday morning, the 8th of September, we’ve got clean 4ft SW swell with a 13-second period. The wind is light and cross-off from the SSE, which is a real treat. The energy is moderate (615), and the wave comment says it all – expect very good surf conditions. The afternoons get a bit dicey with onshore wind, so make the morning session your priority.

Moving into Wednesday the 9th, the swell drops to 2ft, but the period stretches to 15 seconds. The morning is clean again with a slight air, making for some fun, long lines on the reef. The energy is still moderate (400). Thursday the 10th and Friday the 11th are a mixed bag – mornings offer clean 3ft to 4ft surf, but the afternoons get blown out by a stiff cross-onshore wind.

Saturday the 12th brings a bit more size, with 6ft in the morning. The period drops to 9 seconds, so it’s a bit more of a short-period swell, but it’s clean and the energy is moderate (463). Still a good session.

Now, if you’ve got patience, the real standout window starts Sunday the 13th of September. The morning is absolutely glassy with a 2ft swell but a massive 18-second period. The energy is moderate (528), and the wave comment says it all – expect very good surf conditions. This is a long-period groundswell, which will be peeling like a dream on this reef. The following Monday the 14th and Tuesday the 15th mornings are also looking fantastic, with 4ft and 4ft SW swell, long periods, and clean cross-off winds. The energy jumps up to 786 on Monday, so the power is there.

The second week stays promising. Thursday the 17th and Saturday the 19th of September mornings are clean. Saturday the 19th is a big one – 5ft of SW swell with a 12-second period, light offshore wind from the ENE, and a very strong energy reading (723). The wave comment is expecting very good surf conditions. This is a top pick.

Then, the real heavy hitter arrives on Wednesday the 23rd of September. We’re looking at 8ft of SW swell with a 13-second period. The energy is massive (2548), making it an excellent session for experienced surfers only. The morning wind is gentle and cross-off, keeping it clean. This is not for beginners – it’s a proper, powerful reef wave.

Overall, the best surf on offer is the morning of Monday the 14th of September for the quality of the swell and conditions, and the morning of Saturday the 19th of September for the size and clean conditions. The 23rd is for the experts only.

This is Rusty, signing off.

Short Range Forecast

Mostly dry. Very mild (max 14°C on Thu afternoon, min 8°C on Tue morning). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Very mild (max 14°C on Sun afternoon, min 9°C on Sat morning). Wind will be generally light.

Tuesday
8
Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
2
2
2
0
0
1
0
0
2
0
0
2
1
3
3
1
1
3
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
SW
13
1.1
SW
13
1
SW
12
0.7
WSW
15
1
WSW
14
1
WSW
13
1
WSW
13
1
WSW
13
1
WSW
12
1.1
SW
12
1.1
SW
12
1.2
SW
11
1.7
WSW
9
1.3
SW
8
1.4
SW
9
0.7
WSW
18
0.8
WSW
17
1.2
WSW
16
1.3
WSW
14
1.3
WSW
14
1.2
WSW
13
Wave Graph
Metric surfscale
Energy kJ
552
418
292
188
413
351
357
362
309
325
343
341
430
232
314
276
344
671
660
606
491
Wind (km/h)
10
SSE
10
W
10
SSE
5
SSE
15
WSW
15
S
10
S
25
SW
15
SSW
10
SSE
20
SW
20
SSW
10
SSE
5
WSW
0
ENE
5
ESE
15
WSW
15
S
10
S
20
SSW
15
S
Wind State
cross-off
on
cross-off
cross-off
cross-on
cross
cross
cross-on
cross
cross-off
cross-on
cross-on
cross-off
cross-on
glassy
cross-off
cross-on
cross
cross-off
cross-on
cross
High Tide
9:07AM1.43m
9:51PM0.98m
9:55AM1.50m
10:32PM1.09m
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
Low Tide
3:54PM0.07m
3:26AM0.18m
4:33PM0.00m
4:14AM0.10m
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
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
part cloud
cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
clear
part cloud
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:56
7:54
7:54
7:52
7:50
7:50
7:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:34
7:34
7:35
7:36
7:36
7:37
7:37
 mm
Temp °C
11
12
10
12
13
11
13
14
11
13
13
11
11
12
11
12
14
12
15
16
16
Feels °C
9
9
8
10
10
8
11
9
6
9
8
6
10
10
10
11
11
8
12
11
14
  • 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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