
Surf Forecasts:
Matanzas surf forecast from 8 Aug 2026:
- Best quality surf: Saturday 8 Aug, 5AM (local time) - 10ft (3.0m), 14s period, SW swell with cross-offshore winds.
- Most powerful swell: Saturday 8 Aug, 8AM (local time) - 10ft (3.0m), 14s period, SW swell with 3,699 kJ wave energy.
- Next surfable swell (1★+): Saturday 8 Aug, 2AM (local time) - 7ft (2.1m), 11s 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 (Aug 08) at 2AM. The primary swell is predicted to be 2.1m and 11s period with a secondary swell of 1.5m and 14s. 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 3.0m 14s and forecast to arrive on Saturday (Aug 08) at 8AM. 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+) | 2AM (Sat 8th Aug) | 7ft (2.1m) 11s |
| Best Surf | 5AM (Sat 8th Aug) | 10ft (3.0m) 14s |
| Most Powerful | 8AM (Sat 8th Aug) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Matanzas over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s talk about what’s in store for the next couple of weeks at Matanzas. This is a solid, exposed reef setup that really knows how to handle a SW groundswell, and we’ve got a fair bit of that coming through.
The real standout is gonna be Saturday the 8th of August. We’re waking up to a solid 10ft SW swell with a 14-second period pumping in from the deep blue. The wind is light, cross-off, and the water is going to be clean. That’s proper, powerful groundswell (combined energy of 3846) and it’s going to be stacking up nicely on the reef. This is for experienced surfers only; that kind of size is no joke, but for those who are comfortable, it’s gonna be a morning to remember. Later in the day, the wind swings and kicks up chop, so make the most of the early.
The swell stays in the 7ft to 8ft range through Sunday and Monday, but the wind is mostly cross or cross-on, so it’s going to be a bit lumpy. Not the best for a clean session, but there’s still plenty of energy in the water (combined energy in the 1000-3000 range).
We hit a bit of a lull mid-week, with Tuesday the 11th seeing a drop to 4ft. The morning is glassy though, which is a treat if you’re after a longboard or a fish. The water temp is about average for this time of year.
The second week has a couple of promising windows. Keep an eye on Saturday the 15th of August morning. The wind is clean offshore from the east, with a 4ft SW groundswell. That’s a fun size, and the conditions will be clean. The afternoon gets glassy, and the swell picks up a touch. Sunday the 16th of August morning is also glassy with a clean 5ft swell. These are good, fun days for a crowd.
Then around Tuesday the 18th of August, we get a nice pulse of 6ft swell with a 14-second period and a clean, cross-off wind from the NE. That’s another excellent window for experienced surfers, with solid energy (combined energy of 1291). The swell lingers into Wednesday, but the wind gets messy again.
The last few days of the outlook taper off, with smaller, cleaner conditions arriving on Saturday the 22nd of August and Sunday the 23rd of August, with a 3ft to 5ft swell and light winds. Good for a relaxed paddle.
So, the best advice: be on the reef at dawn on Saturday the 8th of August for the heavy stuff, and then mark your calendar for the morning of Tuesday the 18th of August for another solid, clean session. The smaller, glassy mornings in between are great for a cruise.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Fri night. Very mild (max 11°C on Fri night, min 7°C on Sun morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 13°C on Thu afternoon, min 7°C on Wed morning). Wind will be generally light. | ||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | ||||||||||||||
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 11 | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | SW 14 | SW 13 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | WSW 19 | WSW 18 | WSW 16 | WSW 16 | WSW 15 | WSW 14 |
Wave Graph | |||||||||||||||||||
990 | 3699 | 3315 | 2837 | 1819 | 2846 | 2205 | 1323 | 1025 | 689 | 338 | 325 | 119 | 205 | 443 | 597 | 763 | 610 | 465 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-on | cross | cross | cross | cross-off | cross | cross-on | cross-off | glassy | cross-on | cross | cross | cross-on | cross-off | cross-off | cross | cross |
High Tide | 6:02AM1.24m | 6:48PM0.76m | 7:14AM1.35m | 8:04PM0.82m | 8:16AM1.46m | 9:00PM0.90m | 9:09AM1.56m | 9:48PM0.98m | 9:56AM1.62m | 10:31PM1.06m | 10:40AM1.63m | 11:12PM1.13m | |||||||
Low Tide | 10:56PM0.37m | 1:14PM0.33m | 00:17AM0.35m | 2:20PM0.21m | 1:28AM0.28m | 3:12PM0.10m | 2:28AM0.19m | 3:57PM0.01m | 3:20AM0.11m | 4:38PM-0.05m | 4:09AM0.06m | 5:16PM-0.06m | 4:56AM0.04m | ||||||
— | 7:33 | — | — | 7:31 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:28 | — | — | |
6:12 | — | 6:13 | — | — | 6:13 | — | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | |
mm | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 11 | 10 | 11 | 10 | 10 | 11 | 9 | 9 | 11 | 10 | 10 | 11 | 9 | 10 | 12 | 10 | 11 | 13 | 12 |
Feels °C | 8 | 7 | 7 | 5 | 5 | 5 | 4 | 6 | 7 | 7 | 8 | 8 | 6 | 7 | 8 | 6 | 8 | 10 | 9 |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | SW 14 | SW 13 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | WSW 19 | WSW 18 | WSW 16 | WSW 16 | WSW 15 | WSW 14 |
990 | 3699 | 3315 | 2837 | 1819 | 2846 | 2205 | 1323 | 1025 | 689 | 338 | 325 | 119 | 205 | 443 | 597 | 763 | 610 | 465 | |
Swell 2 Height (m) Direction Period (s) | SW 14 | SW 21 | SW 20 | SW 18 | SW 16 | — | — | WSW 18 | — | W 8 | WSW 15 | W 8 | WSW 14 | SW 10 | SW 10 | SW 6 | SW 6 | SSW 9 | WSW 5 |
928 | 117 | 99 | 383 | 1255 | — | — | 31 | — | 1 | 133 | 1 | 118 | 63 | 45 | 15 | 16 | 7 | 11 | |
Swell 3 Height (m) Direction Period (s) | SW 24 | — | — | — | — | — | — | — | — | — | — | — | SW 6 | WSW 14 | WSW 13 | SW 9 | — | — | SW 8 |
22 | — | — | — | — | — | — | — | — | — | — | — | 9 | 104 | 57 | 21 | — | — | 3 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 6 | — | — | WSW 6 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 29 | — | — | 20 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 48 | 43 | 48 | 364 | 0 | 16 | 65 | 0 | 0 | 60 | 5 | 16 | 48 | 0 | 0 | 48 | 16 |
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.











