Surf Forecasts:
Matanzas surf forecast from 9 Sep 2026:
- Best quality surf: Monday 14 Sep, 6AM (local time) - 5ft (1.5m), 15s period, WSW swell with cross-offshore winds.
- Most powerful swell: Monday 14 Sep, 6AM (local time) - 5ft (1.5m), 15s period, WSW swell with 924 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 12AM (local time) - 4.5ft (1.4m), 10s 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 Sunday (Sep 13) at 12AM. The primary swell is predicted to be 1.4m and 10s period with a secondary swell of 0.4m 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 1.5m 15s and forecast to arrive on Monday (Sep 14) at 6AM. 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+) | 12AM (Sun 13th Sep) | 4.5ft (1.4m) 10s |
| Best Surf | 6AM (Mon 14th Sep) | 5ft (1.5m) 15s |
| Most Powerful | 6AM (Mon 14th Sep) | 5ft (1.5m) 15s |
Table - best surf conditions forecast for Matanzas over the next 16 days.
The Lowdown
G’day, Rusty here, and we’ve got a solid 16-day window ahead of us at Matanzas. This reef breaks real consistent, so there’s almost always something to paddle out into. The water’s sitting at 56°, which is pretty much spot on for this time of year – nothing weird going on there.
The first real standout is Wednesday morning, the 9th. We’ve got a clean 3ft SW swell, light cross-offshore breeze from the ESE, and the combined energy is a solid 413 (moderate). It’s glassy, clean, and perfect for an intermediate session. The wind’s light, so those waves will be holding their shape nicely.
The next real gem is Sunday morning, the 13th. That morning delivers a clean 4ft SW groundswell, period dropping to 9 seconds, with a light ESE cross-offshore wind. The combined energy jumps to 613 (moderate to strong), and the forecast is for very good surf. This one’s got some punch.
Monday morning, the 14th, is another beauty. Clean 5ft WSW groundswell with a 14-second period – that’s a long period groundswell, so it’ll be a bit more lined up and powerful on this reef. Light cross-offshore from the SSE, combined energy of 926 (strong), and the description says very good. This is a serious session for the experienced crew.
There’s a bit of a lull mid-week, but then we get a real treat on Monday morning, the 21st. Glassy conditions, 5ft SW groundswell with an 11-second period, combined energy of 619 (moderate to strong). The wind is dead calm – glassy – so the surface will be like a mirror. That’s a morning to set the alarm early.
Consistency is high here, so even the “ordinary” days will have waves. Just keep an eye on the afternoons, which tend to get a bit cross-onshore and choppy, especially later in the period. The best of the best are those clean mornings from the 13th, 14th, and 21st. Get out there.
Rusty.
Short Range ForecastMostly dry. Very mild (max 14°C on Thu afternoon, min 9°C on Wed morning). Winds increasing (light winds from the SW on Wed morning, fresh winds from the SSW by Fri afternoon). | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Mon afternoon, min 9°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | |||||||||||||||
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 12 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 10 | SW 8 | SW 8 | SW 10 | WSW 18 | WSW 17 | WSW 16 | WSW 14 | WSW 14 | WSW 12 | WSW 13 | WSW 13 | WSW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 212 | 487 | 357 | 357 | 362 | 309 | 378 | 231 | 265 | 410 | 279 | 365 | 287 | 423 | 715 | 800 | 790 | 518 | 476 | 408 | 299 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | glassy | cross-off | cross-on | cross | cross-off | cross | cross | cross-off | cross-on | cross |
High Tide | 9:55AM1.50m | 10:32PM1.09m | 10:39AM1.52m | 11:09PM1.19m | 11:19AM1.49m | 11:45PM1.27m | 11:57AM1.41m | 00:20AM1.31m | 12:34PM1.30m | 00:55AM1.33m | 1:10PM1.17m | 1:31AM1.31m | 1:47PM1.03m | 2:09AM1.26m | |||||||
Low Tide | 4:33PM0.00m | 4:14AM0.10m | 5:08PM-0.03m | 5:00AM0.05m | 5:40PM-0.03m | 5:43AM0.04m | 6:12PM0.01m | 6:26AM0.07m | 6:41PM0.08m | 7:09AM0.13m | 7:11PM0.16m | 7:53AM0.21m | 7:40PM0.26m | ||||||||
 | |  |  | |  |  | | | | | | | | | | | | | | | |
 | 7:54 | — | — | 7:54 | — | — | 7:52 | — | — | 7:50 | — | — | 7:50 | — | — | 7:48 | — | — | 7:47 | — | — |
 | — | 7:34 | — | — | 7:35 | — | — | 7:36 | — | — | 7:36 | — | — | 7:37 | — | — | 7:37 | — | — | 7:37 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 11 | 13 | 10 | 13 | 14 | 11 | 13 | 14 | 11 | 12 | 13 | 11 | 14 | 15 | 11 | 15 | 17 | 14 | 15 | 15 | 13 |
Feels °C | 9 | 10 | 6 | 11 | 10 | 7 | 10 | 8 | 5 | 9 | 10 | 9 | 13 | 12 | 6 | 11 | 13 | 10 | 13 | 12 | 10 |
Swell 1 Height (m) Direction Period (s) | SW 12 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 10 | SW 8 | WSW 11 | SW 10 | SW 9 | SW 9 | WSW 16 | WSW 14 | WSW 14 | WSW 12 | WSW 13 | WSW 13 | WSW 12 |
| kJ | 212 | 487 | 357 | 357 | 362 | 309 | 378 | 231 | 265 | 410 | 75 | 365 | 287 | 220 | 715 | 800 | 790 | 518 | 476 | 408 | 299 |
Swell 2 Height (m) Direction Period (s) | WSW 15 | NW 13 | SW 5 | SW 5 | NW 12 | NW 13 | NW 11 | NW 12 | SW 18 | WSW 16 | WSW 21 | WSW 20 | WSW 18 | WSW 17 | SW 8 | SW 8 | NW 12 | SW 7 | SW 7 | NW 12 | SW 7 |
| kJ | 188 | 7 | 19 | 17 | 6 | 7 | 5 | 6 | 13 | 27 | 44 | 149 | 280 | 423 | 177 | 126 | 5 | 94 | 75 | 6 | 73 |
Swell 3 Height (m) Direction Period (s) | SW 5 | — | NW 12 | NW 12 | — | NW 11 | SW 21 | SW 20 | NW 12 | NW 12 | WSW 16 | SW 15 | W 16 | W 15 | W 13 | — | — | NW 11 | NW 12 | — | NW 12 |
| kJ | 13 | — | 6 | 6 | — | 5 | 17 | 15 | 6 | 6 | 26 | 56 | 46 | 67 | 87 | — | — | 5 | 5 | — | 6 |
Wind waves Height (m) Direction Period (s) | — | SW 5 | — | — | SW 4 | SW 4 | — | WSW 9 | SW 6 | — | SW 8 | — | — | — | — | — | SW 8 | — | — | SW 7 | — |
| kJ | — | 18 | — | — | 11 | 13 | — | 115 | 124 | — | 279 | — | — | — | — | — | 153 | — | — | 118 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 60 | 43 | 16 | 364 | 48 | 5 | 291 | 48 | 16 | 60 | 0 | 0 | 364 | 43 | 0 | 364 | 16 | 0 | 60 | 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.
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