
Surf Forecasts:
Matanzas surf forecast from 10 Aug 2026:
- Best quality surf: Monday 10 Aug, 5AM (local time) - 7.5ft (2.3m), 13s period, SW swell with cross-offshore winds.
- Most powerful swell: Monday 10 Aug, 2AM (local time) - 8ft (2.5m), 14s period, SW swell with 2,205 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 5AM (local time) - 7.5ft (2.3m), 13s 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 Monday (Aug 10) at 5AM. The primary swell is predicted to be 2.3m and 13s 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 2.5m 14s and forecast to arrive on Monday (Aug 10) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 5s period and expected on Saturday (Aug 15) at 5PM.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 10th Aug) | 7.5ft (2.3m) 13s |
| Best Surf | 5AM (Mon 10th Aug) | 7.5ft (2.3m) 13s |
| Most Powerful | 2AM (Mon 10th Aug) | 8ft (2.5m) 14s |
Table - best surf conditions forecast for Matanzas over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s look at what’s shaping up for Matanzas.
Overall, the first week is a bit of a mixed bag, with some clean windows but nothing to get too excited about until we hit Thursday morning the 13th. That’s the first real standout—a little pocket of glassy, perfect conditions. The swell is rolling in from the WSW, around 4ft, with a period of 16 seconds. That’s proper groundswell, long lines, and the combined wave energy is a solid 689 (moderate energy). That kind of period loves a reef setup like Matanzas, so expect some good shape, but those long gaps between sets will make you wait. The wind is dead calm—glassy—so the surface is gonna be like a mirror. This is the pick of the first week.
Saturday morning the 15th, you get another good one. Swell picks up to about 7ft from the WNW, 11-second period, and the wind is a light cross-offshore breeze, keeping it clean. The combined energy jumps up to 1228 (strong wave energy). That’s got some punch, but it's still in the intermediate-friendly zone, good for experienced surfers. This morning session is worth dragging yourself out of bed for.
Now, for the second week. Sunday the 22nd in the morning, the swell cranks up to a solid 12ft from the WSW, 13-second period. The combined energy is massive—3605 (very strong wave energy). That’s expert-only territory. The wind is a fresh cross-shore, so it’s going to be lumpy and gnarly. Not for the faint-hearted or beginners.
But if you can hold out, Monday the 23rd morning is where it all comes together. Swell is still a solid 10ft from the WSW, 12-second period, and the wind turns cross-offshore with a gentle breeze, cleaning the face right up. The energy is still huge at 2657. This is a big-wave day for experienced surfers only, but if you’ve got the skill and the nerve, this is the absolute highlight of the whole outlook. It won’t be crazy crowded—crowds are only "sometimes" a thing here, so you might have a bit more room to breathe on those big sets.
Water temp is about average for this time of year, so no wetsuit hassles.
After that, the swell backs off through the 24th and really drops by the 25th. There’s a bit of a gap with no real recommendations after the 23rd.
So, bottom line: first week, Thursday morning the 13th and Saturday morning the 15th are your best bets. Second week, if you’re experienced, Sunday the 22nd is big and messy, but Monday the 23rd morning is the gold mine.
Rusty.
Short Range ForecastMostly dry. Very mild (max 13°C on Wed afternoon, min 7°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Thu afternoon. Very mild (max 15°C on Sat afternoon, min 11°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||
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 14 | SW 13 | SW 12 | SW 12 | SW 12 | SW 13 | SW 11 | WSW 19 | WSW 18 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | WNW 9 | W 13 | WNW 11 | WNW 10 | WSW 14 |
Wave Graph | |||||||||||||||||||
2205 | 1323 | 1025 | 689 | 344 | 424 | 125 | 203 | 438 | 590 | 654 | 573 | 389 | 229 | 237 | 799 | 904 | 530 | 419 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross-off | cross | cross | cross | cross | cross | off | glassy | cross | cross-off | cross-off | cross | cross-off | cross-off | cross | cross |
High Tide | 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 | 11:22AM1.57m | 11:53PM1.18m | 12:03PM1.46m | 00:33AM1.20m | ||||||
Low Tide | 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 | 5:53PM-0.04m | 5:42AM0.07m | 6:27PM0.01m | |||||||
— | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | 7:26 | — | — | |
6:13 | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | 3 | 2 | — | — | 1 | — | — | 5 |
Temp °C | 9 | 10 | 11 | 10 | 11 | 12 | 10 | 10 | 13 | 12 | 14 | 14 | 12 | 14 | 14 | 13 | 14 | 15 | 13 |
Feels °C | 3 | 6 | 6 | 6 | 7 | 8 | 5 | 6 | 9 | 10 | 14 | 11 | 8 | 12 | 12 | 11 | 12 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 13 | SW 12 | SW 12 | SW 12 | SW 13 | SW 11 | SW 5 | WSW 18 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 13 | WNW 9 | W 13 | WNW 11 | WNW 10 | W 10 |
2205 | 1323 | 1025 | 689 | 344 | 424 | 125 | 25 | 438 | 590 | 654 | 573 | 389 | 229 | 237 | 799 | 904 | 530 | 273 | |
Swell 2 Height (m) Direction Period (s) | — | WSW 18 | — | W 8 | WSW 15 | — | WSW 14 | WSW 19 | SW 10 | WSW 5 | SW 8 | WSW 6 | W 6 | W 10 | WSW 13 | WSW 12 | WSW 13 | WSW 16 | WSW 14 |
— | 31 | — | 1 | 130 | — | 118 | 203 | 46 | 19 | 35 | 14 | 5 | 49 | 198 | 138 | 215 | 469 | 419 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | WSW 20 | SW 10 | WSW 13 | SW 9 | — | — | SW 8 | NW 4 | NW 12 | — | WSW 17 | N 11 | N 5 |
— | — | — | — | — | — | 40 | 64 | 57 | 21 | — | — | 3 | 2 | 6 | — | 109 | 2 | 13 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | SSW 4 | — | SW 5 | — | — | — | — | — | — | — | — | NNE 5 | — |
— | — | — | — | — | — | 8 | — | 28 | — | — | — | — | — | — | — | — | 17 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 5 | 48 | 48 | 0 | 48 | 48 | 43 | 5 | 53 | 0 | 0 | 118 | 0 | 0 | 22 | 0 | 0 | 55 | 22 |
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.











