Matanzas Surf Break

Lat Long: 33.96° S 71.89° W

Matanzas Surf Forecast and Surf Report

Issued: 1 pm 29 Aug 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 29 Aug 2026:

  • Best quality surf: Sunday 30 Aug, 2AM (local time) - 6ft (1.8m), 11s period, WSW swell with cross-offshore winds.
  • Most powerful swell: Thursday 3 Sep, 5PM (local time) - 7ft (2.1m), 15s period, WSW swell with 1,797 kJ wave energy.
  • Next surfable swell (1★+): Sunday 30 Aug, 2AM (local time) - 6ft (1.8m), 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 Sunday (Aug 30) at 2AM. The primary swell is predicted to be 1.8m and 11s period with a secondary swell of 0.1m and 20s. 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 2.1m 15s and forecast to arrive on Thursday (Sep 03) at 5PM. 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+) 2AM (Sun 30th Aug)6ft (1.8m) 11s
Best Surf 2AM (Sun 30th Aug)6ft (1.8m) 11s
Most Powerful 5PM (Thu 3rd Sep)7ft (2.1m) 15s

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


The Lowdown

Alright, Rusty here. Let’s have a look at what we’ve got cooking.

Right off the bat, we’re looking at a classic winter run here at Matanzas, a reef setup that’s very consistent and exposed to the southwest. The water’s sitting at 56°, which is pretty much spot on for this time of year – nothing weird going on there.

Saturday the 29th is the standout. The morning’s clean with a light northeast cross-offshore breeze, and we’ve got a solid 7ft groundswell rolling in from the west-southwest with a 12-second period. The energy’s properly pumping at 1072. This is proper surf for experienced surfers – it’s pushing the 5ft mark and definitely not for beginners. The waves will have real shape and power, but that wind will keep the face clean. If you’re intermediate or above and you’ve got Saturday morning free, get on it.

Saturday afternoon gets messy. The wind swings around to a cross-onshore and picks up, and the quality drops right out.

Sunday the 30th is a good second option. Morning again is the call: 6ft swell, same west-southwest direction, 11-second period, clean light cross-offshore breeze from the north-northeast. Energy’s still solid at 689. It’s a solid session, just not quite as much power as Saturday.

Monday the 31st has a glassy morning – 5 km/h from the south-southwest, which is as good as it gets for clean conditions. The swell’s dropped to 5ft, but it’s still 11 seconds, so there’s shape. Energy’s moderate at 599. This is a fun, user-friendly morning with no wind to worry about. Good for a wider range of surfers.

From Tuesday the 1st of September onward, things go downhill fast. The wind picks up and sits in the cross to cross-onshore zone for days, and the swell quality just ain’t there. The energy dips into the weak range (around 400) and the sessions are marginal to poor. There’s a couple of pulses of longer-period swell around the 2nd and 3rd of September with 18-second and 17-second periods, and energy climbs back up to 1204 on Thursday the 3rd afternoon, but the wind is a fresh 30 km/h cross-shore. That combo means lumpy, lumpy conditions – better for kites than paddles if you ask me.

For the second week, from the 5th of September onwards, we’re looking at small, short-period, wind-affected surf. Nothing worth writing home about. A few mornings have lighter wind and small swell around 4ft to 5ft, but it’s all cross-onshore or onshore, and the period drops to 7-9 seconds by the end. The energy stays weak to moderate. There’s no real standout in that second week – it’s a bit of a flat, messy run.

Bottom line: your best bet is Saturday 29th August morning for the biggest, cleanest swell of the window. Sunday morning and Monday morning are solid fallbacks. After that, the window closes up for quality surf for a solid week or more until things maybe look a little better around the 10th, but even then it’s marginal at best. Crowds are sometimes an issue here, but with this forecast, mid-week should be quiet.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 17°C on Mon afternoon, min 11°C on Sat night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 17°C on Tue afternoon, min 11°C on Thu night). Wind will be generally light.

Sat
29
Sunday
30
Monday
31
Tuesday
1
Wednesday
2
Thursday
3
Friday
4
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
3
2
2
3
3
2
2
0
0
2
0
0
1
1
1
2
1
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)
1.9
WSW
12
1.8
WSW
11
1.7
WSW
11
1.7
WSW
11
1.5
WSW
12
1.4
WSW
11
1.4
WSW
11
1.2
WSW
11
1.1
SW
10
1
SW
10
0.6
WSW
19
0.7
WSW
18
0.8
WSW
17
0.8
WSW
16
1.1
WSW
16
2.1
WSW
15
1.7
WSW
14
1.5
WSW
13
1.4
WSW
13
0.9
WSW
12
Wave Graph
Metric surfscale
Energy kJ
937
786
655
667
603
494
469
311
234
192
236
280
386
302
575
1797
1004
755
623
246
Wind (km/h)
15
SSW
10
SSE
10
N
10
SW
5
ENE
5
S
15
SSW
10
SSE
15
SSW
25
SSW
15
SSE
10
SSW
20
SSW
15
S
20
SSW
30
SSW
20
S
25
S
30
SSW
15
SSE
Wind State
cross-on
cross-off
cross
cross-on
glassy
glassy
cross
cross-off
cross-on
cross
cross-off
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross-off
High Tide
11:25PM1.16m
11:32AM1.34m
11:57PM1.21m
12:05PM1.25m
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
Low Tide
5:23PM0.07m
5:18AM0.14m
5:49PM0.09m
5:57AM0.17m
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
clear
clear
clear
part cloud
cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:07
7:07
7:05
7:03
7:03
7:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:27
6:28
6:29
6:29
6:30
6:30
6:30
 mm
Temp °C
15
13
14
15
13
16
17
16
16
17
14
16
17
13
15
16
14
14
15
13
Feels °C
13
10
12
13
11
14
13
13
13
13
10
14
14
9
11
11
10
9
9
8
  • 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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