Surf Forecasts:
Matanzas surf forecast from 23 Aug 2026:
- Best quality surf: Thursday 27 Aug, 8AM (local time) - 11ft (3.5m), 14s period, WSW swell with glassy winds.
- Most powerful swell: Thursday 27 Aug, 11AM (local time) - 11ft (3.5m), 15s period, WSW swell with 5,626 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 8PM (local time) - 2ft (0.6m), 10s period with W 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 Sunday (Aug 23) at 8PM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.7m and 7s. Another secondary swell of 0.2m and 3s is also forecast. 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 3.5m 15s and forecast to arrive on Thursday (Aug 27) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Sunday (Aug 23) at 5PM.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sun 23rd Aug) | 2ft (0.6m) 10s |
| Best Surf | 8AM (Thu 27th Aug) | 11ft (3.5m) 14s |
| Most Powerful | 11AM (Thu 27th Aug) | 11ft (3.5m) 15s |
Table - best surf conditions forecast for Matanzas over the next 16 days.
The Lowdown
G’day, I’m Rusty. Let’s have a look at what’s comin’ up for Matanzas.
Alright, it’s gonna be a quiet start, no real surf to speak of on Sunday the 23rd of August. You’ve got some small, weak lines – around 3 ft at best – but with a cross wind and only 7-second period, it’s just messy and weak (combined swell energy 170). Not worth paddlin’ out for.
Monday the 24th ain’t much better. Morning sees a tiny 2 ft swell with a long 12-second period, but the energy is low (160) and conditions are ordinary. Afternoon picks up a little to 3 ft from the WSW, still nothing to write home about.
Tuesday the 25th shows a little more life. The swell holds around 2 ft in the morning with a 15-second period – that’s groundswell – and the wind is cross-off, keeping it clean. But it’s still small. The afternoon pushes up to 4 ft, still from the WSW, with a 14-second period and moderate wave energy (438). Clean conditions thanks to a light cross-off breeze, but it’s only marginal.
Wednesday the 26th is where things start to get interesting. Morning brings 6 ft from the west with a 10-second period – solid enough – and the swell energy jumps to 852. The wind is cross-off and it’s clean. But the real standout is Wednesday afternoon: 6 ft from the west, 12-second period, and light offshore wind from the east. That’s clean, lined-up surf, and the combined energy hits 902. This is the first proper window for a fun session.
Thursday the 27th is a beast but not for everyone. Morning has 12 ft from the WSW with a very long 15-second period and huge energy (5626). But the wind is cross-shore and light, leaving a few ripples. That’s expert territory only – way too big for beginners. Afternoon holds at 12 ft with 14-second period but the wind swings cross-on, so it loses a bit of its shine.
Friday the 28th stays solid but not as clean. 10 ft in the morning with a 13-second period, cross wind, and energy of 2658. Afternoon drops to 8 ft with onshore wind – still big, but messy.
Saturday the 29th: 7 ft in the morning from the WSW, 12-second period, cross-on wind, and energy at 1200. Afternoon eases to 6 ft, same direction and period, but cross-on again. Not the pick.
Sunday the 30th: morning has 5 ft, 11-second period, cross wind, energy 509 – small but okay. Afternoon gets rain and cross-on wind, poor conditions.
Now, here’s the next real highlight: Monday the 31st of August. Morning sees 8 ft from the WSW, 11-second period, clean cross-off breeze from the SSE, and energy of 1339. This is excellent for experienced surfers – powerful, clean, and the reef at Matanzas will handle it well.
Tuesday the 1st of September drops back to 4 ft with moderate cross wind – not great.
Wednesday the 2nd of September: 6 ft in the morning with a long 16-second period, cross wind, and energy of 1884. Clean enough but not a standout.
Thursday the 3rd: 8 ft from the WSW, 14-second period, but cross-on wind makes it choppy.
Now, here’s the last true standout: Friday the 4th of September. Morning has 8 ft from the west, 14-second period, cross wind, and energy of 3066 – solid. But the afternoon is the gem: 8 ft from the west, 14-second period, near-calm NNE breeze, and clean conditions. The combined energy is 2498, and it’s rated excellent for experienced surfers. That’s the one to circle.
Saturday the 5th and Sunday the 6th drop back with 8 ft and 7 ft but with strong cross winds and chop. Monday the 7th of September fades to tiny 2 ft with a very long 20-second period but onshore wind – not worth it.
So, the two best windows are Wednesday afternoon the 26th of August and Friday afternoon the 4th of September. Both offer clean, powerful swell from the west-southwest, offshore or near-calm winds, and the reef will handle the long-period groundswell nicely. Crowds are possible at Matanzas, so keep that in mind.
Stay stoked, Rusty.
Short Range ForecastMostly dry. Very mild (max 16°C on Mon night, min 11°C on Sun morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Wed morning. Very mild (max 14°C on Thu afternoon, min 11°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | |||||||||||||||
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 7 | SW 7 | SW 13 | SW 12 | WSW 11 | SW 12 | WSW 15 | WSW 14 | WSW 13 | W 10 | W 12 | WSW 13 | WSW 15 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 |
Wave Graph | |||||||||||||||||||||
99 | 54 | 61 | 77 | 145 | 106 | 167 | 433 | 290 | 529 | 894 | 2789 | 5626 | 4555 | 3076 | 2658 | 2190 | 1593 | 1200 | 953 | 716 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | glassy | cross-off | cross | glassy | cross-off | cross-off | cross | cross-off | off | cross-off | cross | cross-on | cross-off | cross | on | cross-off | cross-on | cross-on | off |
High Tide | 8:21PM0.77m | 8:14AM1.23m | 8:57PM0.83m | 8:52AM1.31m | 9:27PM0.89m | 9:26AM1.37m | 9:56PM0.96m | 9:58AM1.41m | 10:25PM1.03m | 10:29AM1.42m | 10:54PM1.10m | 11:00AM1.39m | 11:25PM1.16m | ||||||||
Low Tide | 2:31PM0.33m | 1:31AM0.43m | 3:07PM0.25m | 2:17AM0.35m | 3:37PM0.19m | 2:55AM0.27m | 4:05PM0.13m | 3:31AM0.21m | 4:32PM0.09m | 4:05AM0.17m | 4:58PM0.07m | 4:41AM0.14m | 5:23PM0.07m | ||||||||
7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | |
— | 6:22 | — | — | 6:23 | — | — | 6:23 | — | — | 6:24 | — | — | 6:25 | — | — | 6:25 | — | — | 6:27 | — | |
mm | — | — | — | — | — | — | — | — | — | 6 | 5 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 12 | 13 | 14 | 16 | 15 | 14 | 13 | 12 | 12 | 12 | 13 | 14 | 12 | 13 | 14 | 12 | 13 | 13 | 12 |
Feels °C | 11 | 11 | 11 | 11 | 13 | 15 | 13 | 12 | 9 | 10 | 9 | 10 | 12 | 11 | 10 | 11 | 12 | 11 | 11 | 10 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 7 | SW 7 | SW 6 | SW 12 | WSW 11 | WSW 10 | WSW 15 | WSW 14 | WSW 13 | W 10 | W 12 | WSW 13 | WSW 15 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 |
99 | 54 | 24 | 77 | 145 | 106 | 167 | 433 | 290 | 529 | 894 | 2789 | 5626 | 4555 | 3076 | 2658 | 2190 | 1593 | 1200 | 953 | 716 | |
Swell 2 Height (m) Direction Period (s) | W 9 | W 9 | W 10 | WSW 12 | SSW 12 | SW 12 | W 10 | — | WSW 10 | WSW 12 | W 20 | — | — | — | — | — | — | — | — | W 20 | SW 11 |
41 | 42 | 48 | 57 | 52 | 89 | 90 | — | 132 | 308 | 8 | — | — | — | — | — | — | — | — | 8 | 5 | |
Swell 3 Height (m) Direction Period (s) | SW 11 | WSW 11 | SW 13 | W 9 | SW 16 | W 16 | SSW 11 | — | — | SW 20 | — | — | — | — | — | — | — | — | — | — | SW 20 |
30 | 40 | 61 | 25 | 66 | 20 | 23 | — | — | 15 | — | — | — | — | — | — | — | — | — | — | 15 | |
Wind waves Height (m) Direction Period (s) | — | NNE 3 | — | N 3 | — | — | — | N 3 | NNW 5 | — | — | — | — | — | — | — | — | — | — | — | — |
— | 1 | — | 1 | — | — | — | 5 | 47 | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 55 | 53 | 0 | 0 | 43 | 0 | 5 | 79 | 53 | 16 | 0 | 0 | 53 | 55 | 0 | 43 | 22 | 0 | 5 | 60 | 0 |
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.











