
Surf Forecasts:
Matanzas surf forecast from 9 Sep 2026:
- Best quality surf: Sunday 13 Sep, 3AM (local time) - 4ft (1.2m), 8s period, SW swell with glassy 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★+): Wednesday 9 Sep, 3AM (local time) - 3ft (0.9m), 12s 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 Wednesday (Sep 09) at 3AM. The primary swell is predicted to be 0.9m and 12s period with a secondary swell of 0.5m and 16s. 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-offshore at the time the swell arrives.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 9th Sep) | 3ft (0.9m) 12s |
| Best Surf | 3AM (Sun 13th Sep) | 4ft (1.2m) 8s |
| 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, let’s get into it. The long-range picture for our stretch of coast has a bit of a slow burn to it, but there are a couple of proper windows that’ll get the heart rate up if you’re patient. The first few days are a write-off for anything decent, so don’t bother paddling out until we get past that.
Starting with Wednesday the 9th – forget the afternoon, it’s messy. The morning’s got a tiny bit of push, around 2ft of WSW swell but it’s clean and glassy with the SE wind barely breathing. It’s small, but if you’re desperate for a splash, that’s your only real option. The energy is moderate at 392, so there’s a bit of life, but honestly, it’s a grovel session. Thursday and Friday are no good either – winds go cross and then cross-on, chop everywhere, and the swell drops into the 3ft range with poor quality. You’re better off doing something else.
Saturday the 12th brings a slight bump to 6ft but the period drops to 8 seconds, that’s junky, short-period stuff. There’s a bit of energy (443) but it’s going to be lumpy and frustrating, especially with the afternoon cross-onshore mess.
Now, Sunday the 13th – this is where it starts to turn. Early morning, the ESE offshore wind comes in light, and we’ve got 4ft of SW swell with a clean face. The energy jumps to a solid 607, and that’s a proper moderate pulse. This is the first real standout. The wave comment says “expect very good surf conditions,” and I’m inclined to agree. It’s a bit of a bigger, cleaner swell, and that offshore breeze will hold it together. Keep the crowd situation in mind – it’s a spot that’s “sometimes” busy, so you might get a bit of company, but it’s worth it.
Monday the 14th is the pick of the bunch, honestly. Morning sees 5ft of WSW swell, period out at 14 seconds – that’s proper groundswell – and a cross-offshore SSE wind keeping it clean. The energy is cranking at 945, which is strong, and the comment is “very good surf conditions” again. This is the one to circle on the calendar. The longer period means it’ll have real push and shape, especially on a reef setup like this. It’s a standout, no doubt.
Tuesday the 15th morning is still fun – glassy with the SE wind, 4ft of swell, decent 13-second period, but it’s a step down in energy (560). Still a good bet if you missed the Monday window.
Then we hit a lull. Wednesday the 16th and Thursday the 17th are marginal at best, small and mostly cross or onshore. The afternoons are poor. Friday the 18th and Saturday the 19th get worse, with rising winds and messy conditions. The weekend of the 19th-20th sees a swell pulse up to 5-6ft, but it’s with strong cross-shore winds and periods of 10-11 seconds, so it’s a total mess. That Saturday afternoon has 30 km/h cross-shore winds, and it’s not going to be fun.
The following week from the 22nd onwards is looking at a lot of average, cross/onshore stuff. But here’s the thing – the 23rd afternoon throws a curveball. The swell jumps to 10ft from the west, period at 10 seconds, and the energy goes through the roof at 2023 – that’s very strong. But it’s also a 10ft wave. That’s expert-only territory. The wind is light onshore at that point, so it might be a bit raw, but if you’ve got the skills and the nerve, that could be something. It’s a long way out though, so treat it as promising but not set in stone.
One thing to remember – water temps are running pretty average for this time of year, so no surprises there.
So, bottom line: Sunday the 13th and Monday the 14th are your standout mornings. Clean, solid, proper energy. After that, there’s a dry spell, then that big 23rd afternoon if you’re brave enough. Don’t waste your time on the junk days.
Rusty.
Short Range ForecastMostly dry. Very mild (max 14°C on Fri afternoon, min 9°C on Tue night). Winds increasing (calm on Wed morning, fresh winds from the SSW by Fri afternoon). | Days 5-7 Weather SummaryMostly dry. Very mild (max 17°C on Mon afternoon, min 9°C on Sat morning). Winds decreasing (fresh winds from the SSW on Fri night, calm by Sun morning). | ||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||
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) | SW 12 | WSW 15 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | SW 12 | WSW 12 | WSW 10 | SW 8 | SW 8 | SW 9 | WSW 18 | WSW 17 | WSW 16 | WSW 14 | WSW 14 | WSW 13 |
Wave Graph | |||||||||||||||||||
341 | 188 | 413 | 357 | 357 | 362 | 309 | 325 | 275 | 270 | 410 | 311 | 293 | 281 | 428 | 724 | 800 | 704 | 526 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | glassy | on | cross-off | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | glassy | off | cross-on | cross | cross-off | cross-on | cross |
High Tide | 9:51PM0.98m | 9:55AM1.50m | 10:32PM1.09m | 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 | ||||||
Low Tide | 3:26AM0.18m | 4:33PM0.00m | 4:14AM0.10m | 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 | |||||||
— | 7:54 | — | — | 7:54 | — | — | 7:52 | — | — | 7:50 | — | — | 7:50 | — | — | 7:48 | — | — | |
7:34 | — | 7:34 | — | — | 7:35 | — | — | 7:36 | — | — | 7:36 | — | — | 7:37 | — | — | 7:37 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 10 | 12 | 13 | 11 | 13 | 13 | 11 | 13 | 14 | 11 | 12 | 13 | 11 | 14 | 15 | 13 | 15 | 17 | 14 |
Feels °C | 7 | 11 | 11 | 8 | 11 | 9 | 7 | 10 | 9 | 5 | 9 | 10 | 9 | 13 | 12 | 10 | 13 | 13 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 12 | WSW 12 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | SW 12 | WSW 12 | WSW 10 | SW 8 | SW 8 | SW 9 | SW 9 | SW 9 | WSW 16 | WSW 14 | WSW 14 | WSW 13 |
341 | 187 | 413 | 357 | 357 | 362 | 309 | 325 | 275 | 270 | 410 | 311 | 293 | 281 | 243 | 724 | 800 | 704 | 526 | |
Swell 2 Height (m) Direction Period (s) | WSW 16 | WSW 15 | SW 6 | SW 5 | SW 5 | NW 12 | NW 13 | SW 5 | W 9 | SW 18 | WSW 16 | WSW 21 | WSW 20 | WSW 18 | WSW 17 | SW 8 | SW 8 | NW 12 | SW 7 |
147 | 188 | 20 | 17 | 13 | 6 | 7 | 11 | 6 | 13 | 27 | 44 | 149 | 280 | 428 | 181 | 145 | 5 | 86 | |
Swell 3 Height (m) Direction Period (s) | W 13 | SW 5 | NW 13 | NW 12 | NW 12 | — | NW 11 | W 6 | NW 12 | NW 12 | NW 12 | WSW 16 | SW 15 | W 16 | W 15 | W 13 | — | — | NW 11 |
3 | 17 | 7 | 6 | 6 | — | 5 | 3 | 6 | 6 | 6 | 26 | 56 | 46 | 67 | 87 | — | — | 5 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SW 4 | SW 4 | — | SW 7 | SW 6 | — | — | — | — | — | — | — | SW 8 | — |
— | — | — | — | — | 11 | 14 | — | 47 | 145 | — | — | — | — | — | — | — | 135 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 48 | 0 | 60 | 0 | 16 | 364 | 43 | 16 | 364 | 120 | 16 | 250 | 0 | 0 | 364 | 43 | 0 | 364 | 16 |
Best forecast wave conditions in Santiago | |||||||||||||||||||
Best forecast wave conditions in Chile | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










