Matanzas Surf Break

Lat Long: 33.96° S 71.89° W

Matanzas Surf Forecast and Surf Report

Issued: 7 pm 08 Aug 2026 (local time)

Forecast update in  hr  min

Today's Matanzas sea temperature is
13.6° C
0.6° 

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


Matanzas surf forecast from 9 Aug 2026:

  • Best quality surf: Sunday 9 Aug, 8AM (local time) - 8ft (2.5m), 13s period, SW swell with cross-offshore winds.
  • Most powerful swell: Sunday 9 Aug, 5PM (local time) - 8ft (2.5m), 14s period, SW swell with 2,805 kJ wave energy.
  • Next surfable swell (1★+): Sunday 9 Aug, 5AM (local time) - 8ft (2.5m), 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 Sunday (Aug 09) at 5AM. The primary swell is predicted to be 2.5m and 13s period with a secondary swell of 1.0m and 17s. 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 2.5m 14s and forecast to arrive on Sunday (Aug 09) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (Aug 14) at 11PM.

Wave TypeTime (-04) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Sun 9th Aug)8ft (2.5m) 13s
Best Surf 8AM (Sun 9th Aug)8ft (2.5m) 13s
Most Powerful 5PM (Sun 9th Aug)8ft (2.5m) 14s

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


The Lowdown

Alright, mate, Rusty here. Let’s have a look at what’s shaping up for us over the next couple of weeks.

The opening stretch is a bit of a mixed bag, with some solid swell energy but the wind is often playing against us, leaving the surf a bit on the rough side. We’ve got a window of opportunity mid-week that starts to look really promising, and the second week is holding some good potential, though we’ll have to keep an eye on the details.

First up, we’re looking at Matanzas (Santa Catarina, Brazil). The reef is a very consistent setup, exposed to SW swell, which is exactly what’s coming. Sunday the 9th kicks off with a chunky 8ft SW swell (13s period) and a hefty 3074 units of energy, but a cross-shore wind leaves it with a slight chop. It’s surfable if you’re keen, but it’s not the cleanest. The afternoon sees the swell bump up to 8ft, but the wind picks up to 16 mph, making it even messier. Monday the 10th drops a bit in size, with 7ft and 6ft swells, but the wind stays cross or cross-onshore, keeping the surface fairly choppy. Tuesday the 11th continues this trend with smaller, weaker swell.

The real standout starts to emerge on Thursday the 13th. Early morning, we get glassy conditions with a 4ft WSW groundswell at a very long 16s period. The energy is moderate at 677 units, but with no wind, the waves will be clean and well-shaped. This is a good one for intermediate surfers – the long period means the waves will have plenty of punch and nice lines, though the sets will be more spaced out, making the paddle out easier. It’s the best call of the early week.

Saturday the 15th morning is another highlight. We’ve got a 7ft WNW swell (11s period) with 1217 units of energy and glassy conditions again. This is a bigger swell, so it’s one for the experienced lot. The waves will be powerful and clean, perfect for a good session. The afternoon gets a bit of a cross-onshore breeze, so stick to the morning.

Moving into the second week, Monday the 17th morning offers a nice 4ft WSW swell (13s) with offshore winds, giving clean surf. It’s a smaller day, but nice and tidy. Tuesday the 18th morning is a cracker – 5ft WSW swell (14s) with a cross-offshore wind, keeping things clean and the energy moderate at 902 units. This is a solid, fun size for intermediate surfers.

Wednesday the 19th morning is another top pick. We’ve got 5ft WSW swell (14s), 1032 units of energy, and a clean cross-offshore wind. This is excellent for experienced surfers – the waves will have good shape and power. Thursday the 20th morning sees a 6ft WSW swell (12s) with a cross-shore wind, but it’s a bit more marginal.

The final standout is on Friday the 21st morning. Absolutely glassy conditions, with a 5ft SW swell (11s) and 563 units of energy. It’s a calm, clean morning, perfect for a long, relaxing session. The swell is a bit smaller, so it’s a good one for all levels.

Overall, the best of the best is Thursday the 13th morning for that glassy, long-period groundswell, and Saturday the 15th morning for the bigger, powerful swell. Wednesday the 19th and Friday the 21st mornings are also strong contenders. The other days are either small, windy, or have a bit of chop, so pick your windows wisely.

Rusty out.

Short Range Forecast

Mostly dry. Very mild (max 11°C on Sun afternoon, min 7°C on Sun morning). Wind will be generally light.

Days 5-7 Weather Summary

Some drizzle, heaviest during Thu afternoon. Very mild (max 15°C on Thu morning, min 7°C on Wed morning). Wind will be generally light.

Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
5
3
1
4
3
1
2
2
0
0
1
1
3
3
1
2
0
1
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
SW
13
2.3
SW
13
2.5
SW
14
2.5
SW
14
2.1
SW
13
1.8
SW
12
1.6
SW
12
1.2
SW
12
1.1
SW
13
0.8
SW
11
0.5
WSW
19
0.9
WSW
18
1.1
WSW
16
1.2
WSW
16
1.2
WSW
15
1.1
WSW
14
0.9
WSW
13
0.9
WSW
13
1.6
WNW
9
Wave Graph
Metric surfscale
Energy kJ
2837
1819
2805
2205
1407
1025
689
396
424
180
203
438
590
654
573
465
277
273
415
Wind (km/h)
15
SSE
15
S
25
SSW
15
SSE
15
SSW
15
SSW
15
S
15
SSW
15
SSW
20
S
15
S
20
SSW
5
SSE
5
S
15
N
10
NE
15
N
15
N
10
NE
Wind State
cross-off
cross
cross
cross-off
cross
cross-on
cross
cross
cross-on
cross
cross
cross
cross-off
glassy
cross
cross-off
cross
cross
cross-off
High Tide
7:14AM1.35m
8:04PM0.82m
8:16AM1.46m
9:00PM0.90m
9:09AM1.56m
9:48PM0.98m
9:56AM1.62m
10:31PM1.06m
10:40AM1.63m
11:12PM1.13m
11:22AM1.57m
11:53PM1.18m
Low Tide
00:17AM0.35m
2:20PM0.21m
1:28AM0.28m
3:12PM0.10m
2:28AM0.19m
3:57PM0.01m
3:20AM0.11m
4:38PM-0.05m
4:09AM0.06m
5:16PM-0.06m
4:56AM0.04m
5:53PM-0.04m
clear
clear
clear
part cloud
cloud
cloud
cloud
part cloud
cloud
clear
clear
clear
part cloud
cloud
rain showers
cloud
part cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:31
7:31
7:30
7:28
7:28
7:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:13
6:13
6:14
6:15
6:15
6:15
6:16
 mm
1
Temp °C
10
10
11
10
10
11
9
10
11
10
10
13
12
15
15
13
14
14
13
Feels °C
5
5
5
5
6
7
5
6
8
6
6
9
9
14
13
11
12
12
11
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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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