Matanzas Surf Break

Lat Long: 33.96° S 71.89° W

Matanzas Surf Forecast and Surf Report

Issued: 7 pm 03 Sep 2026 (local time)

Forecast update in  hr  min

Today's Matanzas sea temperature is
14.0°C
1.0° 

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


Matanzas surf forecast from 4 Sep 2026:

  • Best quality surf: Sunday 6 Sep, 3AM (local time) - 4ft (1.2m), 16s period, SW swell with cross-offshore winds.
  • Most powerful swell: Sunday 6 Sep, 3PM (local time) - 5.5ft (1.7m), 14s period, SW swell with 1,179 kJ wave energy.
  • Next surfable swell (1★+): Sunday 6 Sep, 3AM (local time) - 4ft (1.2m), 16s 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 06) at 3AM. The primary swell is predicted to be 1.2m and 16s period with a secondary swell of 1.2m and 9s. 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 1.7m 14s and forecast to arrive on Sunday (Sep 06) at 3PM. 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+) 3AM (Sun 6th Sep)4ft (1.2m) 16s
Best Surf 3AM (Sun 6th Sep)4ft (1.2m) 16s
Most Powerful 3PM (Sun 6th Sep)5.5ft (1.7m) 14s

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


The Lowdown

Alright folks, Rusty here. Let’s get into it. We’ve got a 16-day window for Matanzas, and honestly, it’s a bit of a mixed bag. The first few days are looking pretty average, but there’s a glimmer of hope if you’re patient.

The overall pattern is dominated by a persistent cross to cross-onshore wind, which is going to keep things choppy and messy for most of the period. The swell energy is moderate, with values mostly in the 800-1000 (combined energy) range early on, but it’s not enough to overcome the wind. The water temp is about average for the time of year, nothing to write home about.

Friday, September 4th kicks off with a 4 ft WSW swell, but with a 15 mph cross breeze from the south, it’s going to be a lumpy, frustrating session. The energy is there (845), but the quality isn’t. Not worth paddling out.

Saturday, September 5th drops off to 3 ft, but the real story is the 18-second period on that SW swell. That’s a long period groundswell, which means it could have some real shape to it, but unfortunately the wind is still cross. The morning has a small window of lighter breeze (9 mph), but it’s still cross. The energy is higher (1037-1146), but the conditions are marginal. Not a standout.

Sunday, September 6th is the one to circle. The morning sees a light NW breeze at just 3 mph, switching to a light onshore 6 mph offshore in the afternoon. The swell is a solid 5 ft from the SW, with a 15-second period, giving it real grunt (1053 combined energy). The wind is light and cross-onshore, but the biggest draw is the early morning glass-off potential. This is the best window of the next week. The break is a reef, so that long period will wrap in nicely, and the light wind means clean walls. It’s the pick of the first week.

Monday, September 7th through to Wednesday, September 9th is a write-off. The wind picks up again, stays cross-onshore, and the swell drops. The combined energy dips below 500, and the conditions are “poor”. Don’t bother.

Thursday, September 10th is interesting. The morning is glassy, with zero wind, and a 3 ft WSW swell. The energy is low (271), but for a log or a funboard, that glassy morning could be a real treat. The forecast says “expect good surf conditions,” and that’s rare in this outlook. It’s not a big wave day, but it’s clean.

Friday, September 11th brings a bump in swell to 6 ft, but it’s a short period (12 seconds) and the wind is back to 15 mph cross-shore. The energy is 815, but it’s going to be a messy, blown-out scene. Kite surfers might enjoy it, but for paddle surfing, it’s a pass.

The second week, from Saturday, September 12th onward, is a slow decline. The swells are smaller, the period drops, and the wind is consistently cross-onshore. Saturday the 12th has 6 ft, but it’s short period (10 seconds) and the wind is on it. The energy is just 591. Sunday the 13th is similar. Monday the 14th sees a drop to 2 ft in the morning, then a slight pick-up in the afternoon with a 4 ft WSW swell and a 14-second period. The wind is lighter cross-shore, so it’s passable, but not a standout.

Tuesday, September 15th has a tiny window of light wind in the morning, but the swell is only 4 ft and the period is average. The rest of the week is all poor conditions with gusty cross-shore winds.

The best on offer is Sunday, September 6th, morning. That 5 ft SW swell with a 15-second period and light NW wind (3 mph) is the cleanest, most powerful wave of the entire forecast. It’s a reef break, so it’ll handle that long period well. After that, Thursday, September 10th morning is a consolation prize for the glassy conditions, but the swell is tiny.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 15°C on Fri afternoon, min 7°C on Fri night). Winds decreasing (fresh winds from the SSW on Fri afternoon, calm by Sat night).

Days 5-7 Weather Summary

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

Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
1
0
2
2
1
4
3
2
3
2
0
1
1
0
0
0
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)
2.1
WSW
13
1.3
WSW
13
1.1
WSW
13
1.7
SW
8
0.9
SW
18
1
SW
18
1.2
SW
16
1.4
SW
15
1.4
SW
14
1.4
SW
14
1.4
SW
14
1.4
SW
14
1.3
SW
13
1.1
SW
13
1.1
SW
12
0.9
WSW
12
1
WSW
14
1
WSW
14
1
WSW
13
Wave Graph
Metric surfscale
Energy kJ
1623
577
408
401
491
607
748
881
742
776
799
799
560
431
358
260
419
384
351
Wind (km/h)
20
S
25
S
30
SSW
20
S
15
SSW
20
SSW
5
SSE
5
NW
10
W
5
SE
10
WSW
20
SW
15
S
15
SSW
20
SSW
15
S
15
SSW
20
SW
5
ENE
Wind State
cross
cross
cross
cross-off
cross
cross-on
cross-off
cross-on
on
glassy
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
cross-on
glassy
High Tide
3:03AM1.21m
3:36PM0.76m
4:25AM1.20m
5:28PM0.72m
5:54AM1.25m
7:04PM0.77m
7:09AM1.34m
8:05PM0.87m
8:07AM1.43m
8:51PM0.98m
8:55AM1.50m
9:32PM1.09m
Low Tide
8:06PM0.33m
10:07AM0.39m
9:12PM0.40m
11:53AM0.36m
10:48PM0.43m
1:14PM0.27m
1:20AM0.38m
2:10PM0.16m
1:30AM0.28m
2:54PM0.07m
2:26AM0.18m
3:33PM0.00m
3:14AM0.10m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:01
7:00
7:58
7:56
7:56
7:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:30
6:30
6:31
7:32
7:32
7:34
7:35
 mm
Temp °C
12
12
15
12
11
14
11
13
14
11
11
12
10
11
13
11
13
15
12
Feels °C
7
7
8
7
7
10
7
11
11
9
8
8
6
7
9
7
10
12
10
  • 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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