Surf Forecasts:
Matanzas surf forecast from 30 Jul 2026:
- Best quality surf: Sunday 2 Aug, 5PM (local time) - 8ft (2.5m), 11s period, W swell with cross-offshore winds.
- Most powerful swell: Wednesday 5 Aug, 2PM (local time) - 7ft (2.1m), 16s period, WSW swell with 2,191 kJ wave energy.
- Next surfable swell (1★+): Friday 31 Jul, 11PM (local time) - 3.5ft (1.1m), 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 Friday (Jul 31) at 11PM. The primary swell is predicted to be 1.1m and 10s period with a secondary swell of 1.1m and 9s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Matanzas in the next 16 days are 2.1m 16s and forecast to arrive on Wednesday (Aug 05) at 2PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Friday (Jul 31) at 2AM.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Fri 31st Jul) | 3.5ft (1.1m) 10s |
| Best Surf | 5PM (Sun 2nd Aug) | 8ft (2.5m) 11s |
| Most Powerful | 2PM (Wed 5th Aug) | 7ft (2.1m) 16s |
Table - best surf conditions forecast for Matanzas over the next 16 days.
The Lowdown
G’day, it’s Rusty here. Usually, when a spot like Matanzas (a reef break) is this consistent and exposed to the right swell, we’d be in for a treat, but the start of this 16-day window is a slow burn. For the first couple of days, it’s messy—Thursday and Friday are a write-off with that fresh north-northeasterly wind and onshore vibes, and the swell is just too churned up to get excited about. The combined swell energy is moderate (600-972), but the wind is all wrong. Stick with me, though, because it gets its act together beautifully.
The real standout is Saturday morning, August 3, and Sunday morning, August 4. On Saturday, a solid 7ft west swell with a 12-second period rolls in, and Sunday brings a 6ft west-southwest swell, also 12 seconds. The winds are light and cross-offshore, so it’s clean, and the combined energy is strong (1456 on Saturday, 1127 on Sunday). The water temperature is 56°F, which is pretty much spot on for this time of year, so it’s nothing unusual. With that swell size, it’s getting into experienced territory, but it’s excellent for those who know what they’re doing. Crowds are possible here, so get in early.
Then, Wednesday morning, August 7, is another beauty—glassy conditions with a 5ft west-southwest swell, 11-second period, and the combined energy is strong (1171). That glassy wind is a serious bonus, so the reef will be clean and lined up. For the experts, Monday morning, August 12, is a big one: a 10ft west-southwest swell with a 13-second period, glassy winds, and a massive combined energy of 2860. That’s serious power, but it’s only for the experienced crew—beginners, stay well clear. The long period (13 seconds) means it’ll be a proper groundswell, with long waits between sets but plenty of push.
The second week fades a bit. There’s a bump on Monday morning, August 12, with a 7ft west swell, 11-second period, and glassy conditions again (1305 combined energy), but it’s not as clean by afternoon. After that, it’s a mix of cross-shore winds and choppy conditions, with the swell dropping off. The outlook turns poor by August 15, with strong southerly winds. So, the best is definitely the first week.
Rusty.
Short Range ForecastHeavy rain (total 36mm), heaviest during Fri morning. Very mild (max 15°C on Thu afternoon, min 12°C on Sun morning). Winds decreasing (strong winds from the N on Thu night, light winds from the ENE by Sat morning). | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Sun afternoon. Very mild (max 17°C on Mon afternoon, min 12°C on Sun afternoon). Wind will be generally light. | |||||||||||||||||||
Thu 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||
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) | W 11 | WNW 10 | NW 9 | NW 9 | W 10 | SW 12 | SW 12 | WNW 9 | W 11 | W 11 | W 11 | W 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 16 | WSW 15 | WSW 14 |
Wave Graph  | ||||||||||||||||||||
 kJ | 595 | 863 | 571 | 330 | 257 | 514 | 634 | 281 | 1931 | 1567 | 1317 | 1342 | 1251 | 1200 | 985 | 872 | 569 | 591 | 2150 | 1797 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-on | cross-off | cross-off | cross | cross | glassy | cross-on | cross-off |
High Tide | 11:27PM0.96m | 11:31AM1.43m | 00:00AM0.99m | 12:02PM1.38m | 00:33AM1.02m | 12:34PM1.31m | 1:08AM1.05m | 1:08PM1.21m | 1:48AM1.08m | 1:46PM1.10m | 2:34AM1.11m | 2:34PM0.97m | 3:31AM1.13m | |||||||
Low Tide | 5:39PM0.11m | 5:00AM0.20m | 6:08PM0.10m | 5:36AM0.21m | 6:36PM0.12m | 6:13AM0.24m | 7:04PM0.15m | 6:54AM0.29m | 7:33PM0.19m | 7:43AM0.35m | 8:06PM0.24m | 8:44AM0.40m | 8:47PM0.29m | |||||||
 |  |  |  |  |  | | |  |  |  | | | | | |  | | | | |
 | — | — | 7:39 | — | — | 7:39 | — | — | 7:39 | — | — | 7:37 | — | — | 7:37 | — | — | 7:35 | — | — |
 | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:09 | — | — | 6:09 | — |
mm | — | 3 | 19 | 2 | — | — | — | 2 | 10 | 1 | 2 | — | — | — | — | — | — | — | — | 2 |
Temp °C | 15 | 15 | 13 | 13 | 14 | 14 | 14 | 14 | 12 | 14 | 14 | 15 | 17 | 15 | 16 | 17 | 14 | 16 | 16 | 14 |
Feels °C | 9 | 9 | 11 | 8 | 11 | 11 | 12 | 12 | 8 | 12 | 13 | 13 | 15 | 12 | 15 | 14 | 10 | 15 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | W 11 | WNW 10 | NW 9 | NW 9 | W 10 | SW 12 | SW 12 | WNW 9 | W 11 | W 11 | W 11 | W 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 15 | WSW 14 |
| kJ | 595 | 863 | 571 | 330 | 257 | 514 | 634 | 281 | 1931 | 1567 | 1317 | 1342 | 1251 | 1200 | 985 | 872 | 569 | 591 | 2150 | 1797 |
Swell 2 Height (m) Direction Period (s) | S 7 | WSW 12 | W 11 | W 10 | NW 9 | W 10 | W 10 | SW 11 | SW 11 | SW 10 | — | SW 11 | SW 10 | SW 10 | SW 9 | SW 19 | SW 18 | WSW 16 | NW 12 | — |
| kJ | 1 | 195 | 375 | 245 | 155 | 228 | 177 | 250 | 58 | 36 | — | 114 | 84 | 77 | 43 | 183 | 319 | 575 | 5 | — |
Swell 3 Height (m) Direction Period (s) | NW 10 | W 18 | WSW 16 | WSW 16 | N 7 | NW 9 | NW 8 | WSW 13 | — | — | — | — | — | WSW 20 | SW 20 | SW 9 | SW 8 | NW 11 | — | — |
| kJ | 4 | 6 | 26 | 50 | 55 | 93 | 80 | 99 | — | — | — | — | — | 39 | 99 | 22 | 18 | 5 | — | — |
Wind waves Height (m) Direction Period (s) | N 5 | N 6 | — | N 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 51 | 282 | — | 56 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 157 | 157 | 22 | 118 | 0 | 0 | 0 | 53 | 43 | 0 | 0 | 0 | 48 | 0 | 0 | 48 | 16 | 0 | 43 | 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.
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