Matanzas Surf Break

Lat Long: 33.96° S 71.89° W

Matanzas Surf Forecast and Surf Report

Issued: 1 pm 31 Aug 2026 (local time)

Forecast update in  hr  min

Today's Matanzas sea temperature is
13.6°C
0.7° 

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


Matanzas surf forecast from 1 Sep 2026:

  • Best quality surf: Monday 31 Aug, 11PM (local time) - 4.5ft (1.3m), 11s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Sunday 6 Sep, 12PM (local time) - 6ft (1.9m), 15s period, SW swell with 1,563 kJ wave energy.
  • Next surfable swell (1★+): Monday 31 Aug, 11PM (local time) - 4.5ft (1.3m), 11s 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 Monday (Aug 31) at 11PM. The primary swell is predicted to be 1.3m and 11s period with a secondary swell of 0.6m and 8s. 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 1.9m 15s and forecast to arrive on Sunday (Sep 06) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (-04) & Date Wave Height & Period
Next good surf (1 star+)11PM (Mon 31st Aug)4.5ft (1.3m) 11s
Best Surf11PM (Mon 31st Aug)4.5ft (1.3m) 11s
Most Powerful12PM (Sun 6th Sep)6ft (1.9m) 15s

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


The Lowdown

Alright, crew, let's break down what's happening at Matanzas over the next couple of weeks.

It's a bit of a mixed bag here. The swell is coming in, but the wind is the main character for most of it, making things tricky. We've got a solid run of cross and cross-onshore winds that are going to chop things up, so finding a clean window takes some patience. The water temp is sitting at 57°F, which is pretty much average for this time of year, so no surprises there.

The first real chance to get wet kicks off on Monday afternoon, August 31st. We've got a 5ft swell from the WSW with an 11-second period, which is a touch of energy (585). The wind is a light cross-onshore, so it'll be a little bumpy, but it's surfable. It's a bit of a marginal call, but the best bet of the early days.

The rest of the week into early September is a bit of a write-off. The swell drops off to around 4ft, and the wind gets up, especially from the 3rd, with a fresh 19 mph cross-onshore breeze turning things into a lumpy mess. The energy does pick up on the 3rd afternoon to 1329, but that fresh wind just kills it. Saturday the 5th has a long-period 19-second swell from the SW, but again, the wind is too strong and cross-onshore. It's a frustrating pattern.

Now, here's the standout. Look ahead to Sunday morning, September 6th. The swell is 6ft from the SW with a 15-second period, and the energy is pumping at 1563. The wind is a light cross-onshore from the SW at 6 mph. That's a clean, powerful groundswell pushing in with only a light ruffle on the surface. This is the one to circle. It's still a little cross-onshore, but with that light breeze, it's going to be the cleanest and most powerful we see for a while. It's an intermediate-level wave at that size, but it's a proper session.

After that, the wind stays messy. We get a bit of a bump on the 14th and 15th of September, with the swell building to 7ft and 8ft from the WSW. The morning of the 14th has a 7ft swell with 14-second period and a cross-shore wind, but it's still a moderate breeze. By the 15th afternoon, the wind drops to a gentle breeze, which is a decent sign. The energy is massive, around 1879 and 1722. This is big, powerful swell, well over 8ft, so it's strictly for the experienced crew. The cross-shore wind will keep it from being a total mess, but it's still lumpy. This is a promising but less certain long-range call.

So, if you're picking a winner, the Sunday morning, September 6th, is the one. The 14th and 15th are for the hardcore, but keep an eye on them.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 18°C on Mon afternoon, min 12°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 15°C on Thu afternoon, min 7°C on Sat morning). Winds decreasing (fresh winds from the SSW on Fri afternoon, light winds from the S by Sun morning).

Mon
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
Saturday
5
Sunday
6
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
3
1
0
1
0
0
2
1
0
2
1
0
1
2
0
3
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)
1.4
WSW
11
1.3
WSW
11
1.1
SW
10
1.1
SW
10
0.6
WSW
19
0.7
WSW
18
0.7
WSW
17
0.8
WSW
16
0.9
WSW
14
1.7
WSW
12
1.6
WSW
13
1.2
WSW
13
1.2
WSW
13
1.7
SW
8
0.9
SW
19
1.1
SW
18
1.4
SW
16
1.9
SW
15
1.4
SW
14
1.5
SW
14
Wave Graph
Metric surfscale
Energy kJ
447
359
234
225
236
280
267
302
351
756
919
499
476
373
589
790
929
1563
810
852
Wind (km/h)
10
SSW
5
SE
10
S
20
SSW
15
S
20
SSW
25
SSW
15
S
25
SSW
30
SSW
20
S
20
S
30
SSW
20
S
20
SSW
30
SSW
15
S
10
SW
20
SW
10
S
Wind State
cross-on
cross-off
cross
cross
cross
cross-on
cross-on
cross
cross
cross-on
cross
cross
cross
cross
cross
cross-on
cross
cross-on
cross-on
cross
High Tide
00:32AM1.24m
12:42PM1.13m
1:12AM1.25m
1:24PM1.00m
2:00AM1.23m
2:18PM0.87m
3:03AM1.21m
3:36PM0.76m
4:25AM1.20m
5:28PM0.72m
5:54AM1.25m
7:04PM0.77m
Low Tide
6:17PM0.13m
6:40AM0.21m
6:47PM0.19m
7:31AM0.28m
7:22PM0.26m
8:36AM0.35m
8:06PM0.33m
10:07AM0.39m
9:12PM0.40m
11:53AM0.36m
10:48PM0.43m
1:14PM0.27m
1:20AM0.38m
clear
part cloud
clear
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:05
7:03
7:03
7:01
7:00
7:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:29
6:29
6:30
6:30
6:30
6:31
7:32
 mm
Temp °C
18
16
16
17
14
14
16
13
14
15
11
12
14
11
11
12
9
11
12
9
Feels °C
16
13
13
13
10
11
12
10
9
10
6
8
8
6
6
5
4
8
8
5
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  • 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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