
Surf Forecasts:
Matanzas surf forecast from 14 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 12AM (local time) - 4.5ft (1.3m), 13s period, WSW swell with cross-offshore winds.
- Most powerful swell: Monday 14 Sep, 9PM (local time) - 4.5ft (1.3m), 13s period, WSW swell with 569 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 12AM (local time) - 4.5ft (1.3m), 13s 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 Tuesday (Sep 15) at 12AM. The primary swell is predicted to be 1.3m and 13s period with a secondary swell of 1.1m and 7s. 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 1.3m 13s and forecast to arrive on Monday (Sep 14) at 9PM. 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+) | 12AM (Tue 15th Sep) | 4.5ft (1.3m) 13s |
| Best Surf | 12AM (Tue 15th Sep) | 4.5ft (1.3m) 13s |
| Most Powerful | 9PM (Mon 14th Sep) | 4.5ft (1.3m) 13s |
Table - best surf conditions forecast for Matanzas over the next 16 days.
The Lowdown
Morning, crew. Rusty here, checking the forecast for our stretch of coast over the next couple of weeks. It’s a mixed bag, so let’s get into it.
The opening days are the real deal for clean, lined-up waves. We've got a solid pulse of WSW groundswell running, and the morning sessions are where it's at. The water's sitting around 56°F, which is pretty much bang on normal for this time of year, so no surprises there. The standout is Monday the 14th. We're looking at a 5ft swell with a 14-second period, and the energy is in the moderate range at 971. Clear skies, a light SSE cross-off breeze... it’s going to be glassy and clean. This is the pick of the bunch for sure. Tuesday morning keeps the momentum with a clean 4ft swell, though the energy drops a bit to 544. Still, with a light offshore, it’s a great window.
Now, the rest of that first week is a bit of a write-off for the most part. From Wednesday the 16th through to Saturday the 19th, we've got onshore winds and a dropping, weaker swell. The swell direction stays out of the WSW, but the period drops into the 6-to-13 second range, and with that cross-onshore wind, it’s going to be a choppy mess. Not worth paddling out for anything serious.
Then we get a little blip of hope on Sunday the 20th. The morning sees a clean 4ft swell from the WSW with a light offshore ENE wind. The energy is weak at 254, but it might be worth a look if you're desperate for a slide. That’s it for a few days though. Monday and Tuesday are pretty poor, mostly onshore and messy.
Here's where things get interesting. Wednesday the 23rd is a glassy morning, but the swell is tiny at 2ft. Not worth the hassle. But then, Thursday the 24th and Friday the 25th see a bigger pulse of W swell roll in. Thursday morning brings a 6ft swell with an 11-second period, and the energy jumps up to 879. The wind is a cross-off from the NE, which is clean, even though there's some light rain around. This is a bigger, more powerful swell. The period is moderate, so it should have some push. Friday morning is the biggest of the bunch, pushing 7ft from the W with that same NE cross-off. Energy is way up at 1154. For most of us, this is great, but be aware, at 7ft, it’s starting to get serious for beginners. The afternoon is a different story though, with the wind shifting NW and making things lumpy.
Saturday the 26th has a solid 7ft W swell in the morning, but it’s cross-shore winds, which is a bit messy. The energy is strong at 1384. Still, if you're experienced, there could be some serious power in those sets. The afternoon turns to onshore and choppy, so get out early.
The final stretch, from Sunday the 27th, is a letdown. The swell stays in the 3 to 5ft range, but the winds are all over the place, mostly cross-shore or strong onshore, turning the ocean into lumpy chaos. The period drops too, so it loses all its shape. One thing to note is the very last day, Tuesday the 29th. The morning looks clean with a tiny 2ft swell at a 17-second period. That’s a long-period groundswell, which at a beach break like this might just close out. The afternoon is toast with a 35 km/h fresh breeze making it a total mess.
So, to wrap it up: Monday the 14th is your best bet for clean, fun waves. Friday the 25th morning is the big one for power, but it’s more for the experienced crew. The long-range stuff is promising but has less certainty. Keep an eye on the wind, and make the most of those morning windows when it’s clean.
Rusty out.
Short Range ForecastMostly dry. Very mild (max 18°C on Mon afternoon, min 11°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Thu morning, min 11°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
AM | 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 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | SW 12 | WSW 11 | WSW 11 | WSW 13 | WSW 12 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 10 |
Wave Graph | |||||||||||||||||||||
789 | 704 | 534 | 476 | 341 | 289 | 96 | 142 | 103 | 68 | 289 | 199 | 346 | 334 | 210 | 320 | 359 | 379 | 241 | 373 | 435 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-off | cross-off | cross-on | cross | cross | cross-on | cross | cross-off | cross-on | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross-off | off | cross-on | cross |
High Tide | 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 | 6:37AM1.06m | 8:13PM0.72m | ||||||||
Low Tide | 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 | 2:11PM0.39m | 1:05AM0.53m | ||||||||
7:48 | — | — | 7:47 | — | — | 7:46 | — | — | 7:43 | — | — | 7:43 | — | — | 7:41 | — | — | 7:39 | — | — | |
— | 7:37 | — | — | 7:37 | — | — | 7:38 | — | — | 7:39 | — | — | 7:39 | — | — | 7:40 | — | — | 7:42 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 18 | 15 | 18 | 18 | 14 | 16 | 17 | 15 | 18 | 18 | 14 | 15 | 15 | 13 | 16 | 16 | 13 | 16 | 17 | 17 |
Feels °C | 13 | 15 | 13 | 16 | 14 | 11 | 14 | 15 | 12 | 16 | 16 | 12 | 14 | 14 | 11 | 14 | 13 | 11 | 15 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | SW 6 | SW 12 | SW 6 | SW 6 | WSW 13 | WSW 12 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 10 |
789 | 704 | 534 | 476 | 341 | 289 | 36 | 142 | 85 | 68 | 289 | 199 | 346 | 334 | 210 | 320 | 359 | 379 | 241 | 373 | 435 | |
Swell 2 Height (m) Direction Period (s) | SW 8 | SW 8 | SW 7 | SW 7 | NW 13 | SW 7 | WSW 12 | W 10 | WSW 11 | WSW 11 | SW 21 | SW 6 | WSW 18 | WSW 18 | SW 18 | NW 15 | WNW 12 | SW 19 | W 18 | NW 13 | WNW 12 |
177 | 153 | 121 | 63 | 6 | 65 | 96 | 17 | 103 | 65 | 18 | 42 | 34 | 31 | 12 | 8 | 15 | 14 | 6 | 7 | 15 | |
Swell 3 Height (m) Direction Period (s) | NW 12 | NW 12 | NW 11 | NW 11 | — | NW 12 | WSW 10 | NW 12 | W 15 | WSW 13 | S 10 | WSW 8 | — | — | — | W 20 | W 20 | — | NW 13 | W 18 | W 16 |
5 | 5 | 5 | 5 | — | 6 | 37 | 6 | 17 | 60 | 2 | 37 | — | — | — | 8 | 7 | — | 7 | 6 | 5 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | SW 7 | — | — | SW 6 | — | — | SW 6 | — | — | — | SW 5 | — | — | — | — | — | — |
— | — | — | — | 84 | — | — | 39 | — | — | 79 | — | — | — | 25 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 229 | 0 | 0 | 364 | 43 | 16 | 48 | 43 | 0 | 60 | 0 | 43 | 60 | 43 | 48 | 1360 | 0 | 0 | 43 | 43 |
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.










