Surf Forecasts:
Matanzas surf forecast from 4 Aug 2026:
- Best quality surf: Monday 3 Aug, 11PM (local time) - 7.5ft (2.3m), 12s period, WSW swell with glassy winds.
- Most powerful swell: Wednesday 5 Aug, 11PM (local time) - 10ft (3.0m), 14s period, WSW swell with 3,773 kJ wave energy.
- Next surfable swell (1★+): Monday 3 Aug, 11PM (local time) - 7.5ft (2.3m), 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 Monday (Aug 03) at 11PM. The primary swell is predicted to be 2.3m and 12s period with a secondary swell of 0.1m and 20s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Matanzas in the next 16 days are 3.0m 14s and forecast to arrive on Wednesday (Aug 05) at 11PM. 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+) | 11PM (Mon 3rd Aug) | 7.5ft (2.3m) 12s |
| Best Surf | 11PM (Mon 3rd Aug) | 7.5ft (2.3m) 12s |
| Most Powerful | 11PM (Wed 5th Aug) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Matanzas over the next 16 days.
The Lowdown
Alright, let’s get into the forecast for Matanzas over the next couple of weeks. This is a consistent reef break that’s exposed to the swell, and it likes a south-west direction. The water’s about 56°F, which is normal for the season.
We’ve got a slow start, but the first real highlight lands on Monday afternoon, the 3rd of August. The swell is a solid 7ft from the west, with a 12-second period. That’s got some serious energy behind it, and the wind is a light north-easterly cross-off breeze. That’ll keep things clean. It’s a bit big for a beginner, but for the experienced surfer, this is a proper session. This is the best on offer.
Tuesday morning (4th August) drops off a bit. The swell is still 7ft from the west-south-west, but the wind swings to a southerly cross-breeze, and the energy is still solid. By the afternoon, a cross-on wind makes it choppy. Not worth the paddle.
Wednesday morning (5th August) sees a 8ft west-south-west swell with a lighter westerly onshore wind. The energy is big, but the wind is onshore, so it’ll be lumpy. The afternoon drops to 5ft but the wind goes cross, still nothing special.
Thursday (6th August) gets big. Morning sees a 10ft west-south-west swell with an 11-second period, and strong energy. That’s a powerful wave, but with a 12 mph cross-breeze, it’s going to be a messy, choppy beast. Only for the very experienced. The afternoon is not much better with an 18 mph cross-wind.
Friday (7th August) the swell drops right off, and the wind is unfriendly. It’s a fade-out.
Now, here’s the real gem. Saturday morning, the 8th of August. The swell is 10ft from the south-west, with a 13-second period, and the energy is massive. But the wind? It’s glassy. A light south-easterly breeze, but it’s described as “glass”. That’s as clean as it gets. This is a serious, powerful groundswell. For experts, this is the window. The afternoon gets a bit cross-on and choppy, so get it early.
Sunday (9th August) morning is still a solid 8ft from the south-west, with a 13-second period and strong energy, but the wind is a light cross-breeze, so it’s not as clean as Saturday. It’s still a good wave, but Saturday morning is the standout.
The second week gets a bit quieter. Monday (10th August) to Tuesday (11th August) sees the swell dropping, with a 7ft and 4ft respectively. The Tuesday morning (11th) is glassy, but the swell is only 4ft. It’ll be a clean, fun little wave for the longboard or a groveler.
From Wednesday (12th August) it gets small, with a 2ft west-south-west swell. The energy is weak. There’s a brief pulse on Saturday (15th August) with a 6ft west swell, but the wind is messy. Not a true standout.
Overall, the week is a tale of two windows: Monday afternoon (3rd) and Saturday morning (8th). Saturday morning, with the glassy 10ft south-west swell, is the absolute pick of the bunch. The second week is for smaller, cleaner sessions, but nothing to get too excited about.
Rusty.
Short Range ForecastModerate rain (total 17mm), heaviest on Wed night. Very mild (max 15°C on Mon night, min 9°C on Thu morning). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 2mm), mostly falling on Fri night. Very mild (max 12°C on Fri afternoon, min 6°C on Sun morning). Wind will be generally light. | ||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | ||||||||||||||
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 12 | WSW 12 | WSW 12 | WSW 13 | WSW 12 | WSW 14 | WSW 10 | WSW 10 | WSW 9 | WSW 12 | SW 12 | WSW 11 | SW 12 | SW 13 | SW 13 | SW 13 | SW 13 | SW 15 | SW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 1485 | 1200 | 887 | 1227 | 1425 | 1887 | 2115 | 1139 | 565 | 403 | 694 | 426 | 1111 | 2567 | 2567 | 2005 | 1819 | 1511 | 2125 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross | cross-on | cross-off | cross | cross | cross | cross | cross | cross-on | cross-off | cross-off | cross-on | cross | cross | cross | cross-off |
High Tide | 1:48AM1.08m | 1:46PM1.10m | 2:34AM1.11m | 2:34PM0.97m | 3:31AM1.13m | 3:39PM0.85m | 4:42AM1.17m | 5:10PM0.77m | 6:02AM1.24m | 6:48PM0.76m | 7:14AM1.35m | 8:04PM0.82m | |||||||
Low Tide | 7:43AM0.35m | 8:06PM0.24m | 8:44AM0.40m | 8:47PM0.29m | 10:06AM0.44m | 9:42PM0.35m | 11:45AM0.42m | 10:56PM0.37m | 1:14PM0.33m | 00:17AM0.35m | 2:20PM0.21m | 1:28AM0.28m | |||||||
 |  |  |  | | |  |  | |  | | | | | | | | | | |
 | — | 7:37 | — | — | 7:35 | — | — | 7:35 | — | — | 7:33 | — | — | 7:33 | — | — | 7:31 | — | — |
 | 6:08 | — | 6:09 | — | — | 6:09 | — | — | 6:10 | — | — | 6:12 | — | — | 6:13 | — | — | 6:13 | — |
mm | — | — | — | — | — | — | 17 | — | — | — | — | — | 2 | — | — | — | — | — | — |
Temp °C | 15 | 14 | 15 | 13 | 14 | 15 | 12 | 11 | 12 | 10 | 10 | 12 | 11 | 9 | 11 | 9 | 9 | 11 | 9 |
Feels °C | 14 | 12 | 12 | 10 | 13 | 12 | 8 | 6 | 7 | 5 | 5 | 9 | 7 | 6 | 6 | 4 | 4 | 5 | 3 |
Swell 1 Height (m) Direction Period (s) | WSW 12 | WSW 12 | WSW 12 | WSW 13 | WSW 12 | WSW 14 | WSW 10 | WSW 10 | WSW 9 | SW 8 | SW 12 | WSW 11 | SW 12 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 14 |
| kJ | 1485 | 1200 | 887 | 1227 | 1425 | 1887 | 2115 | 1139 | 565 | 288 | 694 | 426 | 1111 | 2567 | 2567 | 2005 | 1819 | 897 | 2125 |
Swell 2 Height (m) Direction Period (s) | SW 8 | SW 20 | SW 19 | WSW 18 | NW 11 | NW 12 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | SW 17 | WSW 16 | WSW 15 | SW 21 | SW 20 | SW 18 | SW 16 | SW 15 | — |
| kJ | 10 | 97 | 94 | 207 | 5 | 5 | 594 | 545 | 528 | 403 | 74 | 173 | 568 | 117 | 100 | 460 | 786 | 1511 | — |
Swell 3 Height (m) Direction Period (s) | WSW 20 | — | NW 12 | NW 11 | — | — | N 11 | — | — | WSW 18 | W 12 | W 11 | SW 24 | — | — | — | — | — | — |
| kJ | 39 | — | 6 | 5 | — | — | 2 | — | — | 31 | 3 | 2 | 22 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SW 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 28 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 43 | 48 | 121 | 16 | 55 | 60 | 60 | 48 | 364 | 43 | 48 | 43 | 0 | 0 | 48 | 43 | 16 | 291 | 0 |
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.
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