Surf Forecasts:
Matanzas surf forecast from 3 Sep 2026:
- Best quality surf: Saturday 5 Sep, 8AM (local time) - 2.5ft (0.8m), 19s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 3 Sep, 5PM (local time) - 7ft (2.1m), 15s period, WSW swell with 1,772 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 8AM (local time) - 2.5ft (0.8m), 19s 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 (Sep 05) at 8AM. The primary swell is predicted to be 0.8m and 19s period with a secondary swell of 1.5m and 9s. Another secondary swell of 0.9m and 12s 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 2.1m 15s and forecast to arrive on Thursday (Sep 03) at 5PM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Sat 5th Sep) | 2.5ft (0.8m) 19s |
| Best Surf | 8AM (Sat 5th Sep) | 2.5ft (0.8m) 19s |
| Most Powerful | 5PM (Thu 3rd Sep) | 7ft (2.1m) 15s |
Table - best surf conditions forecast for Matanzas over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it for Matanzas.
The opening stretch looks pretty grim for a paddle. We’ve got a solid window of poor to marginal conditions from Wednesday the 2nd right through to Saturday the 5th. The wind is mostly cross or cross-on and moderate to fresh, making a mess of things. The only real saving grace is the swell is building from a very long period 17s groundswell out of the WSW, but it’s tiny at 2 ft. The combined energy sits at 520 (moderate), but it’s just not lining up with the wind. Honestly, there’s nothing worth suiting up for there.
The first genuine standout hits on Sunday morning, September 6th. That’s where the forecast finally lights up. The wind drops to a glassy 5 km/h from the NNW, and the water is a touch warmer than normal at 57°. The swell jumps to 5 ft from the SW with a period of 15 seconds, carrying a combined energy of 974 (moderate). That’s a quality groundswell, and with glassy conditions, it’s going to be clean. This is a reef break, so that long-period swell will wrap in nicely. It’s best for intermediate surfers – 5 ft is manageable. Crowds are possible here, so get there early.
After that, the wind turns cross-on again through Monday and Tuesday, and the quality drops back into marginal territory. The swell holds around 5 ft, but the chop makes it a slog. The energy stays moderate (799 to 749), but it’s just not clean.
The next small window is on Thursday morning, September 17th. Another glassy moment with a 5 km/h wind from the W. The swell is smaller at 3 ft, but it’s a clean 13s SW groundswell. The energy is low at 294. This is a mellow day for a longboard or a beginner session, but not a standout.
Sunday morning the 6th is the best on offer. The rest of the period is a mix of marginal and poor, with a lot of cross-shore chop. For the 16-day outlook, that’s your one true highlight.
Rusty.
Short Range ForecastMostly dry. Very mild (max 15°C on Wed afternoon, min 7°C on Fri night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Very mild (max 14°C on Sat afternoon, min 8°C on Sun night). Wind will be generally light. | |||||||||||||||||||
Wed 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | ||||||||||||||
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 17 | WSW 16 | WSW 14 | WSW 15 | WSW 13 | WSW 13 | WSW 13 | SW 8 | SW 18 | SW 18 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | WSW 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 267 | 302 | 378 | 1772 | 1697 | 577 | 476 | 449 | 491 | 607 | 748 | 784 | 1079 | 776 | 799 | 731 | 509 | 388 | 311 | 190 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross | cross | cross | cross | cross-off | cross | cross | cross-off | glassy | cross-on | glassy | cross-on | cross-on | cross | cross | cross | cross |
High Tide | 2:00AM1.23m | 2:18PM0.87m | 3:03AM1.21m | 3:36PM0.76m | 4:25AM1.20m | 5:28PM0.72m | 5:54AM1.25m | 7:04PM0.77m | 7:09AM1.34m | 8:05PM0.87m | 8:07AM1.43m | 8:51PM0.98m | ||||||||
Low Tide | 7:22PM0.26m | 8:36AM0.35m | 8:06PM0.33m | 10:07AM0.39m | 9:12PM0.40m | 11:53AM0.36m | 10:48PM0.43m | 1:14PM0.27m | 1:20AM0.38m | 2:10PM0.16m | 1:30AM0.28m | 2:54PM0.07m | 2:26AM0.18m | |||||||
 |  | | | | | | | | | | | | | | | |  |  |  | |
 | — | — | 7:03 | — | — | 7:01 | — | — | 7:00 | — | — | 7:58 | — | — | 7:56 | — | — | 7:56 | — | — |
 | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:31 | — | — | 7:32 | — | — | 7:32 | — | — | 7:34 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 13 | 13 | 14 | 12 | 12 | 14 | 12 | 11 | 14 | 12 | 12 | 13 | 11 | 12 | 13 | 10 | 13 | 14 | 12 |
Feels °C | 10 | 10 | 8 | 7 | 7 | 7 | 8 | 7 | 6 | 9 | 8 | 10 | 10 | 10 | 9 | 9 | 6 | 9 | 9 | 7 |
Swell 1 Height (m) Direction Period (s) | WSW 17 | WSW 10 | WSW 9 | WSW 15 | WSW 13 | SW 8 | WSW 13 | SW 8 | SW 9 | SW 18 | SW 9 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 7 |
| kJ | 267 | 218 | 216 | 1772 | 1697 | 274 | 476 | 449 | 320 | 607 | 281 | 784 | 1079 | 776 | 799 | 731 | 509 | 388 | 311 | 158 |
Swell 2 Height (m) Direction Period (s) | WSW 12 | WSW 16 | WSW 14 | — | — | WSW 13 | SW 23 | WSW 13 | WSW 12 | SW 12 | SW 16 | SW 9 | — | — | — | — | SW 5 | SW 6 | WSW 17 | WSW 12 |
| kJ | 75 | 302 | 378 | — | — | 577 | 21 | 330 | 247 | 149 | 748 | 172 | — | — | — | — | 19 | 25 | 108 | 190 |
Swell 3 Height (m) Direction Period (s) | — | WSW 13 | WSW 16 | — | — | — | — | SW 21 | SW 18 | — | WSW 12 | SW 22 | — | — | — | — | WSW 19 | WSW 18 | W 14 | WSW 16 |
| kJ | — | 69 | 234 | — | — | — | — | 220 | 491 | — | 177 | 18 | — | — | — | — | 72 | 121 | 4 | 144 |
Wind waves Height (m) Direction Period (s) | SW 9 | SW 5 | — | — | — | — | SW 8 | — | — | SW 10 | — | — | — | — | — | SW 4 | — | — | SW 6 | — |
| kJ | 178 | 52 | — | — | — | — | 382 | — | — | 479 | — | — | — | — | — | 18 | — | — | 69 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 121 | 120 | 250 | 364 | 43 | 121 | 1312 | 43 | 48 | 121 | 0 | 0 | 55 | 0 | 65 | 364 | 43 | 48 | 121 | 5 |
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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