
Surf Forecasts:
Matanzas surf forecast from 10 Sep 2026:
- Best quality surf: Saturday 12 Sep, 3AM (local time) - 6ft (1.8m), 9s period, SW swell with cross-offshore winds.
- Most powerful swell: Monday 14 Sep, 6AM (local time) - 4.5ft (1.4m), 15s period, WSW swell with 811 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 3AM (local time) - 6ft (1.8m), 9s 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 Saturday (Sep 12) at 3AM. The primary swell is predicted to be 1.8m and 9s period with a secondary swell of 0.6m and 11s. 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 15s and forecast to arrive on Monday (Sep 14) at 6AM. 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 (Sat 12th Sep) | 6ft (1.8m) 9s |
| Best Surf | 3AM (Sat 12th Sep) | 6ft (1.8m) 9s |
| Most Powerful | 6AM (Mon 14th Sep) | 4.5ft (1.4m) 15s |
Table - best surf conditions forecast for Matanzas over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at what's cooking at Matanzas. We’ve got a bit of a mixed bag over the next couple weeks, but if you time it right, you'll score some real gems.
The start of the run is pretty average with light, messy cross-shore winds and small waves, but don't get discouraged – there’s a clean stretch coming this weekend and into next week that'll have the place looking proper. The water temp is about 56°F which is pretty standard for this time of year.
Saturday the 12th of September is where it gets interesting. The morning is a standout: clean, light cross-offshore breezes, and a solid 6ft swell pushing in from the SW. It’s short-period stuff at 8 seconds, so it'll be a bit crumbly and not holding much punch, but it’s miles better than the junk we’ve had earlier. The combined energy is moderate (483). Good for the intermediate crew, but beginners might find 6ft a bit heavy.
If you can get out Sunday morning the 13th, it's even better. The swell is a touch smaller at 5ft from the SW, but the period has stretched to 9 seconds, the winds are light cross-off again, and the combined energy is up at (626). That’s a sweet spot for a morning session.
But the one you want to circle on the calendar is Monday morning the 14th. The ocean is forecast to go glassy. The swell has backed off to 5ft, but it's from the WSW with a long period of 14 seconds, which is proper groundswell. The combined energy is strong at (976). This is the kind of day Matanzas lives for – clean, lined-up, and with some real push. Get in the water early.
The good run keeps rolling into Tuesday the 15th morning with clean 4ft waves at (552), and again on Thursday the 17th with a glassy dawn and 4ft short-period swell. Not big, but clean and fun.
Looking further out, there’s a notable pulse of energy hitting around Saturday the 20th of September with a 7ft SW swell and a combined energy of (1148), meaning there’s a lot of water moving. But it's getting smashed by 18 mph cross-shore wind. That’s a lumpy, choppy mess and honestly, it looks more interesting for kite surfing than a paddle session. Experts only, if anyone bothers.
The forecast really peaks again for the final standout: Thursday morning the 24th of September. Clean, light cross-off winds, a solid 5ft swell from the WSW with a moderate period of 12 seconds, and a combined energy of (987). That’s a cracking window.
And the best of the entire outlook? Friday morning the 25th of September. Glassy conditions, a 4ft swell, but with a very long period of 14 seconds from the SW, and a combined energy of (1126). That’s excellent, powerful groundswell on a reef, perfect for experienced surfers who know how to handle the longer lulls and the juice when it arrives. It's a long way out, so treat it as a promising possibility, but it's got special written all over it.
So bottom line: the next few days are a write-off. The gold is Monday 14th morning and Friday 25th morning. Don't miss 'em.
Rusty.
Short Range ForecastMostly dry. Very mild (max 14°C on Fri afternoon, min 9°C on Sat morning). Winds decreasing (fresh winds from the SSW on Fri afternoon, light winds from the SE by Sat night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Tue afternoon, min 11°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | |||||||||||||||
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 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | SW 8 | SW 8 | SW 9 | SW 9 | WSW 17 | WSW 16 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | SW 7 |
Wave Graph | |||||||||||||||||||||
357 | 362 | 309 | 294 | 280 | 256 | 450 | 279 | 238 | 300 | 423 | 715 | 789 | 704 | 526 | 476 | 324 | 289 | 180 | 158 | 102 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross-on | cross | cross-off | cross-on | cross | cross-off | cross-on | cross-on | glassy | cross-on | cross-off | cross-off | cross-on | cross | cross-on | on | cross |
High Tide | 10:39AM1.52m | 11:09PM1.19m | 11:19AM1.49m | 11:45PM1.27m | 11:57AM1.41m | 00:20AM1.31m | 12:34PM1.30m | 00:55AM1.33m | 1:10PM1.17m | 1:31AM1.31m | 1:47PM1.03m | 2:09AM1.26m | 2:27PM0.90m | 2:51AM1.18m | |||||||
Low Tide | 5:08PM-0.03m | 5:00AM0.05m | 5:40PM-0.03m | 5:43AM0.04m | 6:12PM0.01m | 6:26AM0.07m | 6:41PM0.08m | 7:09AM0.13m | 7:11PM0.16m | 7:53AM0.21m | 7:40PM0.26m | 8:42AM0.31m | 8:10PM0.35m | ||||||||
7:54 | — | — | 7:52 | — | — | 7:50 | — | — | 7:50 | — | — | 7:48 | — | — | 7:47 | — | — | 7:46 | — | — | |
— | 7:35 | — | — | 7:36 | — | — | 7:36 | — | — | 7:37 | — | — | 7:37 | — | — | 7:37 | — | — | 7:38 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 12 | 13 | 14 | 11 | 12 | 14 | 12 | 15 | 16 | 13 | 15 | 17 | 16 | 17 | 18 | 15 | 14 | 14 | 12 |
Feels °C | 11 | 10 | 9 | 10 | 9 | 6 | 9 | 11 | 9 | 13 | 13 | 10 | 13 | 14 | 13 | 14 | 15 | 13 | 13 | 13 | 10 |
Swell 1 Height (m) Direction Period (s) | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | SW 8 | SW 10 | SW 9 | SW 9 | SW 9 | SW 8 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | SW 6 | SW 7 | WSW 11 |
357 | 362 | 309 | 294 | 280 | 256 | 450 | 106 | 238 | 300 | 300 | 250 | 789 | 704 | 526 | 476 | 324 | 289 | 91 | 75 | 90 | |
Swell 2 Height (m) Direction Period (s) | SW 4 | NW 12 | NW 13 | SW 5 | W 11 | SW 18 | WSW 16 | WSW 21 | SW 10 | WSW 18 | WSW 17 | WSW 16 | SW 8 | SW 8 | SW 8 | SW 7 | — | SW 6 | WSW 12 | WSW 12 | W 15 |
6 | 6 | 7 | 16 | 185 | 13 | 27 | 44 | 84 | 280 | 423 | 715 | 182 | 165 | 114 | 71 | — | 60 | 180 | 158 | 17 | |
Swell 3 Height (m) Direction Period (s) | NW 12 | — | NW 11 | NW 11 | NW 12 | NW 12 | NW 12 | WSW 16 | WSW 20 | W 16 | W 15 | W 13 | NW 12 | NW 12 | NW 11 | NW 12 | — | NW 12 | W 10 | W 13 | NW 12 |
6 | — | 5 | 5 | 5 | 6 | 6 | 26 | 149 | 46 | 67 | 87 | 5 | 5 | 5 | 5 | — | 6 | 8 | 3 | 6 | |
Wind waves Height (m) Direction Period (s) | — | SW 4 | SW 5 | — | SW 4 | SW 6 | — | SW 8 | — | — | — | — | — | — | — | — | SW 7 | — | — | — | SW 7 |
— | 7 | 21 | — | 11 | 145 | — | 279 | — | — | — | — | — | — | — | — | 86 | — | — | — | 102 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 364 | 16 | 5 | 291 | 48 | 0 | 229 | 43 | 0 | 48 | 43 | 0 | 48 | 0 | 0 | 60 | 43 | 5 | 364 | 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.










