
Surf Forecasts:
Matanzas surf forecast from 13 Sep 2026:
- Best quality surf: Monday 14 Sep, 3AM (local time) - 4ft (1.2m), 15s period, WSW swell with cross-offshore winds.
- Most powerful swell: Monday 14 Sep, 9AM (local time) - 4.5ft (1.4m), 14s period, WSW swell with 789 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 3AM (local time) - 4ft (1.2m), 15s 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 (Sep 14) at 3AM. The primary swell is predicted to be 1.2m and 15s period with a secondary swell of 1.2m 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 1.4m 14s and forecast to arrive on Monday (Sep 14) at 9AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Mon 14th Sep) | 4ft (1.2m) 15s |
| Best Surf | 3AM (Mon 14th Sep) | 4ft (1.2m) 15s |
| Most Powerful | 9AM (Mon 14th Sep) | 4.5ft (1.4m) 14s |
Table - best surf conditions forecast for Matanzas over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's coming down the pipe at Matanzas.
Right off the bat, we’ve got a bit of a slow start. The first real surfable option doesn't pop up until Tuesday morning, September 15th. Before that, Sunday and Monday are pretty grim with messy, onshore wind and weak, small swell. The water temp is sitting at a normal 56° for the time of year, nothing wild.
Tuesday morning the 15th is the first glimmer of hope. The wind swings light and cross-offshore, cleaning things up. We get a modest 4ft swell from the WSW with a moderate 13-second period, but the combined wave energy is still pretty weak at 563. It’s clean, but don’t expect anything too exciting. The afternoon gets chopped out again.
Wednesday the 16th sees the swell drop right off. We’ve got a tiny 2ft glassy wave in the morning, but with combined energy of just 177, it’s really marginal. Fun for a log if you’re desperate.
Thursday the 17th morning is the first real standout. The wind goes glassy, dead calm, and the swell picks up a bit to 4ft from the SW. The catch? The period is only 7 seconds – short-period windswell, so it'll be a bit fat and sectiony. But glassy conditions make anything fun.
Then we hit a long, dull stretch. From Thursday afternoon all the way through to Wednesday the 23rd, it’s a mix of cross-onshore winds, chop, and tiny swell. There’s a brief look on Saturday the 19th morning with a clean 4ft from the WSW and offshore ENE breeze at 6 mph – decent for a session, but nothing to write home about.
Things finally start to get interesting as we head into the second week. Thursday the 24th morning brings a clean 3ft from the west with a cross-offshore NNE breeze at 9 mph. It's a solid, clean option for a Thursday surf.
Now, for the true standout – and this one is for experienced surfers only – look at Friday the 25th morning. We’ve got a proper 6ft west swell with a long 13-second period and combined energy pumping at 1285 (strong). The wind is light and cross-offshore from the NE at 6 mph, keeping it clean. This is where Matanzas reef really starts to shine. It’s big, powerful, and lined up. Not for beginners.
If you can hold out, Saturday the 26th morning is even better. A 7ft west swell, 13-second period, combined energy of 1593 (very strong), and glassy conditions with a light SE breeze at 3 mph. This is the pick of the entire forecast. Clean, heavy, and consistent. This is expert territory, no question.
After that, Sunday the 27th morning still has a clean 5ft from the WSW, but the size drops and the winds turn cross-off again. Monday the 28th is a write-off with onshore winds and choppy conditions.
So, to sum it up: the first week is mostly a write-off with a few clean but small windows. The true standouts are Friday the 25th and Saturday the 26th mornings. Get ready for some heavy, clean west swell at the reef if you've got the skills.
Rusty.
Short Range ForecastMostly dry. Very mild (max 19°C on Tue afternoon, min 11°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 17°C on Thu morning, min 12°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Sun 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | ||||||||||||||||||||
Wave Height (m) Direction Period (s) | WSW 17 | WSW 16 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | SW 12 | SW 7 | SW 7 | WSW 13 | WSW 12 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 11 |
Wave Graph | ||||||||||||||||||||
428 | 715 | 789 | 704 | 534 | 476 | 353 | 289 | 94 | 142 | 179 | 105 | 298 | 405 | 259 | 206 | 214 | 320 | 294 | 450 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-on | cross-off | cross-off | cross-on | cross | glassy | cross-on | cross | glassy | cross-on | cross | cross | cross-on | cross | off | cross-on | on |
High Tide | 00:55AM1.33m | 1:10PM1.17m | 1:31AM1.31m | 1:47PM1.03m | 2:09AM1.26m | 2:27PM0.90m | 2:51AM1.18m | 3:15PM0.78m | 3:46AM1.11m | 4:31PM0.69m | 5:04AM1.05m | 6:42PM0.67m | ||||||||
Low Tide | 6:41PM0.08m | 7:09AM0.13m | 7:11PM0.16m | 7:53AM0.21m | 7:40PM0.26m | 8:42AM0.31m | 8:10PM0.35m | 9:43AM0.40m | 8:45PM0.44m | 11:10AM0.46m | 9:39PM0.52m | 12:58PM0.45m | 11:25PM0.56m | |||||||
— | — | 7:48 | — | — | 7:47 | — | — | 7:46 | — | — | 7:43 | — | — | 7:43 | — | — | 7:41 | — | — | |
7:37 | — | — | 7:37 | — | — | 7:37 | — | — | 7:38 | — | — | 7:39 | — | — | 7:39 | — | — | 7:40 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 12 | 15 | 18 | 16 | 18 | 19 | 15 | 17 | 16 | 14 | 17 | 17 | 14 | 15 | 16 | 14 | 15 | 15 | 13 |
Feels °C | 12 | 8 | 12 | 14 | 13 | 16 | 16 | 12 | 16 | 15 | 14 | 17 | 16 | 12 | 14 | 15 | 13 | 14 | 13 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 9 | SW 8 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | SW 6 | SW 12 | SW 7 | SW 7 | WSW 13 | WSW 12 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 11 |
243 | 196 | 789 | 704 | 534 | 476 | 353 | 289 | 45 | 142 | 179 | 105 | 298 | 405 | 259 | 206 | 214 | 320 | 294 | 450 | |
Swell 2 Height (m) Direction Period (s) | WSW 17 | WSW 16 | SW 8 | SW 8 | SW 7 | SW 7 | — | SW 6 | WSW 12 | W 10 | WSW 11 | WSW 11 | SW 6 | WSW 20 | SW 6 | SW 6 | SW 6 | SW 16 | WSW 13 | SW 19 |
428 | 715 | 177 | 177 | 137 | 82 | — | 53 | 94 | 16 | 66 | 90 | 51 | 38 | 47 | 36 | 20 | 10 | 151 | 14 | |
Swell 3 Height (m) Direction Period (s) | W 15 | W 13 | NW 12 | NW 12 | NW 11 | NW 11 | — | NW 12 | WSW 10 | NW 12 | W 15 | WSW 14 | SW 21 | NW 11 | WSW 18 | WSW 18 | SW 17 | NW 15 | WNW 12 | NW 10 |
67 | 87 | 5 | 5 | 5 | 5 | — | 6 | 38 | 6 | 17 | 61 | 18 | 5 | 33 | 31 | 11 | 8 | 15 | 4 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | SW 7 | — | — | SW 7 | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | 91 | — | — | 73 | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 60 | 43 | 5 | 229 | 0 | 0 | 364 | 43 | 0 | 157 | 16 | 0 | 248 | 5 | 43 | 60 | 16 | 0 | 250 | 16 |
Best forecast wave conditions in Santiago | ||||||||||||||||||||
Best forecast wave conditions in Chile | ||||||||||||||||||||
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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.










