
Surf Forecasts:
Matanzas surf forecast from 11 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 11PM (local time) - 3.5ft (1.0m), 17s period, WSW swell with cross-offshore winds.
- Most powerful swell: Saturday 15 Aug, 5AM (local time) - 5.5ft (1.7m), 11s period, W swell with 759 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 8AM (local time) - 4.5ft (1.3m), 12s 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 Tuesday (Aug 11) at 8AM. The primary swell is predicted to be 1.3m and 12s period. 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 1.7m 11s and forecast to arrive on Saturday (Aug 15) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Saturday (Aug 15) at 11PM.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Tue 11th Aug) | 4.5ft (1.3m) 12s |
| Best Surf | 11PM (Wed 12th Aug) | 3.5ft (1.0m) 17s |
| Most Powerful | 5AM (Sat 15th Aug) | 5.5ft (1.7m) 11s |
Table - best surf conditions forecast for Matanzas over the next 16 days.
The Lowdown
Alright folks, Rusty here, digging into the outlook for the Matanzas region.
Alright, so it’s a bit of a mixed bag ahead. We’ve got a decent run of surf potential, but you’ve got to pick your windows carefully because the wind, especially in the afternoons, is gonna mess things up quite a bit. The first proper swell energy shows up on Tuesday the 11th, but the conditions are rough, so we’ll be skipping that. The real story for the coming week is a period of clean, smaller waves bookended by some stronger, but messier, swells.
We start with a bit of a gap. Tuesday the 11th and Wednesday the 12th are a write-off for decent surf – onshore or cross-shore winds and choppy conditions have the score at zero or nearly zero. You’d be wasting your energy. Thursday the 13th is where we get our first real chance, and it’s a good one.
Thursday the 13th morning is your first standout. The conditions are *glass* – that’s about as good as it gets. The wind is a slight NNE breeze, which is offshore for Matanzas. You’re looking at a 4 ft swell from the WSW, which is the optimum direction for this reef. The period is a solid 16 seconds, so it’s a proper groundswell with good shape, but that long period can make it a bit straight on a beach break, but for a reef like this, it’s prime. The water is sitting at 56°, which is bang on average for the time of year. The combined energy is strong at 675. Get out there early, the crowds are *sometimes* a factor here, and this will be worth it. The afternoon stays clean with a light cross-offshore breeze from the NNE, dropping to a 4 ft swell.
Friday the 14th remains clean through the day with a lighter 4 ft WNW swell in the afternoon and great cross-off winds. Saturday the 15th sees a bigger bump coming through – a 5 ft WNW swell in the morning and 5 ft from the west in the afternoon. It’s clean again, but the combined energy is starting to pump up, hitting 928 in the morning. That’s strong, but the wind is still cross-off, so it’s surfable for decent crew, though the size is getting a bit much for beginners.
Sunday the 16th starts clean with a small 3 ft WSW swell, but the afternoon turns to garbage – strong cross-on southerly wind makes it choppy and poor.
Now, we’ve got a big lull in quality conditions for a few days. Monday and Tuesday the 17th and 18th are completely ruled by strong, wrong winds. The afternoons are all onshore chop.
Wednesday the 19th is the big event for the second week. This is the power swing. The swell jumps to 6 ft from the WSW, and the combined energy is massive – 1415 on the morning. That is very strong energy. The wind is only a light cross-shore, so the surface will be okay, not perfect. The period drops to 14 seconds. This is serious size, over the 5 ft mark, and getting close to the 8 ft expert zone. Definitely one for experienced surfers only. The strong onshore in the afternoon will trash it though.
The rest of the week stays in that 5 ft to 7 ft range but with moderate to fresh cross-shore winds, so it’s going to be lumpy. It’s not a total loss, but Thursday and Friday the 20th and 21st are marginal. Sunday the 23rd sees a drop back to small clean waves, but the real party is over.
The Best on Offer: Without a doubt, Thursday morning the 13th is the pick of the trip. Glassy conditions, a solid 4 ft groundswell from the optimum direction, and that long 16-second period will draw some beautiful lines across the reef. The Wednesday the 19th morning is a close second for the bigger, more powerful crew, but you have to be ready for a much heavier, more challenging wave with very strong energy (1415).
Rusty out.
Short Range ForecastSome drizzle, heaviest during Thu afternoon. Very mild (max 16°C on Thu afternoon, min 7°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 9mm), mostly falling on Sat afternoon. Very mild (max 14°C on Sat morning, min 10°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
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) | SW 12 | SW 13 | SW 11 | WSW 19 | WSW 18 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | WNW 9 | W 12 | WNW 10 | W 10 | WSW 14 | WSW 13 | WSW 13 | WSW 15 | WSW 13 | WSW 13 | SW 9 |
Wave Graph | |||||||||||||||||||||
344 | 374 | 180 | 203 | 438 | 590 | 654 | 485 | 389 | 204 | 265 | 628 | 588 | 432 | 419 | 304 | 330 | 405 | 408 | 484 | 359 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-on | cross | cross | cross-on | cross-off |
High Tide | 9:09AM1.56m | 9:48PM0.98m | 9:56AM1.62m | 10:31PM1.06m | 10:40AM1.63m | 11:12PM1.13m | 11:22AM1.57m | 11:53PM1.18m | 12:03PM1.46m | 00:33AM1.20m | 12:42PM1.32m | 1:14AM1.20m | 1:21PM1.16m | 1:56AM1.18m | |||||||
Low Tide | 3:57PM0.01m | 3:20AM0.11m | 4:38PM-0.05m | 4:09AM0.06m | 5:16PM-0.06m | 4:56AM0.04m | 5:53PM-0.04m | 5:42AM0.07m | 6:27PM0.01m | 6:29AM0.14m | 7:01PM0.10m | 7:18AM0.23m | 7:34PM0.19m | ||||||||
7:30 | — | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | 7:26 | — | — | 7:24 | — | — | 7:24 | — | — | |
— | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:17 | — | — | 6:19 | — | |
mm | — | — | — | — | — | — | — | 1 | — | — | — | — | 1 | 7 | 1 | — | — | — | — | — | — |
Temp °C | 10 | 11 | 10 | 10 | 12 | 11 | 15 | 16 | 12 | 13 | 13 | 13 | 14 | 13 | 14 | 13 | 14 | 12 | 12 | 12 | 12 |
Feels °C | 7 | 8 | 6 | 5 | 7 | 7 | 14 | 14 | 11 | 11 | 11 | 12 | 12 | 9 | 12 | 12 | 11 | 9 | 8 | 8 | 7 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 13 | SW 11 | SW 10 | WSW 18 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | WNW 9 | W 12 | WNW 10 | W 10 | W 9 | WSW 13 | W 8 | WSW 8 | SW 8 | WSW 13 | SW 9 |
344 | 374 | 180 | 82 | 438 | 590 | 654 | 485 | 389 | 204 | 265 | 628 | 588 | 432 | 186 | 304 | 168 | 278 | 311 | 484 | 354 | |
Swell 2 Height (m) Direction Period (s) | WSW 15 | — | WSW 14 | WSW 19 | SW 10 | SW 9 | WSW 6 | WSW 6 | SW 6 | W 11 | WSW 13 | WSW 13 | WSW 13 | WSW 16 | WSW 14 | WNW 8 | WSW 13 | WSW 15 | WSW 13 | — | WSW 12 |
133 | — | 118 | 203 | 46 | 65 | 14 | 14 | 9 | 85 | 198 | 198 | 227 | 220 | 419 | 79 | 330 | 405 | 408 | — | 359 | |
Swell 3 Height (m) Direction Period (s) | — | — | WSW 20 | WSW 14 | WSW 13 | WSW 12 | SSW 9 | NW 13 | NW 13 | W 6 | NW 12 | — | WSW 17 | WSW 12 | NW 11 | WSW 9 | NW 10 | NW 10 | NW 10 | — | WSW 17 |
— | — | 40 | 104 | 57 | 28 | 7 | 7 | 7 | 5 | 6 | — | 113 | 99 | 5 | 86 | 4 | 4 | 4 | — | 59 | |
Wind waves Height (m) Direction Period (s) | — | SW 2 | — | — | SW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 8 | — |
— | 1 | — | — | 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 338 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 16 | 435 | 43 | 48 | 108 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 53 | 0 | 0 | 60 | 43 | 48 | 60 | 0 |
Best forecast wave conditions in Santiago | |||||||||||||||||||||
Best forecast wave conditions in Chile | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Latest Updates
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.











