Surf Forecasts:
Matanzas surf forecast from 25 Aug 2026:
- Best quality surf: Thursday 27 Aug, 8AM (local time) - 11ft (3.5m), 14s period, WSW swell with cross-offshore winds.
- Most powerful swell: Thursday 27 Aug, 8AM (local time) - 11ft (3.5m), 14s period, WSW swell with 5,212 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 2PM (local time) - 6.5ft (2.0m), 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 Wednesday (Aug 26) at 2PM. The primary swell is predicted to be 2.0m and 12s period with a secondary swell of 0.1m and 20s. 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 14s and forecast to arrive on Thursday (Aug 27) 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+) | 2PM (Wed 26th Aug) | 6.5ft (2.0m) 12s |
| Best Surf | 8AM (Thu 27th Aug) | 11ft (3.5m) 14s |
| Most Powerful | 8AM (Thu 27th Aug) | 11ft (3.5m) 14s |
Table - best surf conditions forecast for Matanzas over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’m looking at the waves on offer for the next couple of weeks. We’ve got one spot to focus on, and it’s a real slow burn, but there are a couple of windows where it could get serious.
Right now, we’re coming out of a flat and choppy period. The first few days are a write-off, with weak, messy surf and onshore winds. Tuesday morning on the 25th August has a tiny 2ft WSW swell, but it’s cross-on and choppy, so don’t even bother. That carries on through Wednesday morning, though the swell is starting to build.
The first real glimmer of hope comes on Wednesday afternoon, 26th August. The swell bumps up to 7ft from the WSW, and the key thing here is the wind goes glassy. That’s a major positive. The combined energy is moderate, and it’s calling for excellent conditions for experienced surfers. The period is 12 seconds, so it’s a proper groundswell. This is a solid option for the more crew.
Then, Thursday the 27th August morning is the absolute standout. We’re looking at an 12ft WSW swell with a 14-second period, and glassy conditions. The combined energy is very strong. This is big, powerful, and clean. But hear me now – 12ft is expert territory only. The swell direction matches the optimal SW, and with that long period, it’s going to be a freight train, especially at a reef break like Matanzas. This is the one to circle on the calendar if you’ve got the skills.
Friday the 28th August still has good size, with 8ft WSW swell under glassy skies in the morning and afternoon. Energy is still high. This is still excellent for experienced surfers, but a bit more manageable than Thursday.
The weekend sees the swell start to back off. Saturday the 29th August morning is still glassy with 6ft, but the energy drops. By the afternoon, the wind turns cross-on and it gets choppy again. Sunday the 30th August is smaller and messy with stronger winds.
After that, the second week is a lot more inconsistent. There’s a mix of cross and cross-on winds, with the swell hanging around the 5ft to 7ft mark, but it’s rarely clean. The only other bright spot is much later, on Saturday the 5th September. The morning shows a 7ft WSW swell, 14-second period, with glassy winds and strong energy. That’s promising for experienced surfers, but it’s a long way out, so keep an eye on the forecasts.
The water temp is sitting at about 55°F at the start, which is pretty much normal for this time of year, so no major surprises there.
Overall, the best bet is Thursday the 27th August morning for the big wave hunters, and Wednesday afternoon the 26th August as a slightly smaller, still excellent option. The rest of the time, you’ll be scratching for a clean one.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Wed afternoon. Very mild (max 13°C on Tue morning, min 10°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Sun night. Very mild (max 16°C on Sat afternoon, min 10°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | |||||||||||||||
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) | WSW 15 | WSW 14 | WSW 13 | WSW 12 | WSW 12 | WSW 13 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 11 | WSW 12 | WSW 12 | WSW 11 | WSW 10 |
Wave Graph | |||||||||||||||||||||
167 | 273 | 307 | 937 | 1047 | 2817 | 5120 | 4431 | 2786 | 2303 | 2071 | 1428 | 985 | 730 | 716 | 634 | 572 | 569 | 1250 | 1018 | 755 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross | glassy | cross-off | glassy | cross-on | off | glassy | glassy | glassy | glassy | cross-on | cross-off | cross-off | cross | cross | cross | cross | cross-off |
High Tide | 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 | 11:32AM1.34m | 11:57PM1.21m | 12:05PM1.25m | 00:32AM1.24m | |||||||
Low Tide | 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 | 5:18AM0.14m | 5:49PM0.09m | 5:57AM0.17m | 6:17PM0.13m | ||||||||
7:13 | — | — | 7:13 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | 7:07 | — | — | |
— | 6:23 | — | — | 6:24 | — | — | 6:25 | — | — | 6:25 | — | — | 6:27 | — | — | 6:28 | — | — | 6:29 | — | |
mm | — | — | — | 10 | 8 | — | — | — | — | — | — | — | — | — | — | — | 1 | 7 | — | — | — |
Temp °C | 13 | 13 | 13 | 13 | 12 | 12 | 13 | 13 | 12 | 13 | 14 | 12 | 14 | 16 | 14 | 14 | 14 | 12 | 13 | 14 | 13 |
Feels °C | 12 | 10 | 10 | 13 | 11 | 11 | 12 | 11 | 11 | 11 | 11 | 10 | 12 | 14 | 11 | 10 | 9 | 11 | 10 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | WSW 15 | WSW 14 | WSW 13 | WSW 12 | WSW 12 | WSW 13 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 11 | WSW 12 | WSW 12 | WSW 11 | WSW 10 |
167 | 273 | 307 | 937 | 1047 | 2817 | 5120 | 4431 | 2786 | 2303 | 2071 | 1428 | 985 | 730 | 716 | 634 | 572 | 569 | 1250 | 1018 | 755 | |
Swell 2 Height (m) Direction Period (s) | WSW 10 | WSW 10 | WSW 9 | SW 20 | W 20 | — | — | — | — | — | — | — | — | W 20 | SW 20 | WSW 15 | WSW 18 | SW 16 | WSW 19 | SW 15 | SW 20 |
72 | 63 | 156 | 15 | 8 | — | — | — | — | — | — | — | — | 8 | 15 | 42 | 31 | 40 | 35 | 55 | 97 | |
Swell 3 Height (m) Direction Period (s) | SW 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | W 13 | WSW 17 | — | WSW 19 | — | SW 18 | WSW 14 |
29 | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 30 | — | 37 | — | 84 | 18 | |
Wind waves Height (m) Direction Period (s) | — | N 3 | NNW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | 3 | 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 118 | 118 | 43 | 16 | 0 | 0 | 0 | 1364 | 0 | 0 | 0 | 0 | 0 | 48 | 0 | 118 | 118 | 5 | 60 | 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.











