
Surf Forecasts:
Matanzas surf forecast from 17 Jul 2026:
- Best quality surf: Wednesday 22 Jul, 2PM (local time) - 13ft (4.0m), 13s period, W swell with glassy winds.
- Most powerful swell: Wednesday 22 Jul, 11AM (local time) - 13ft (4.0m), 13s period, W swell with 5,239 kJ wave energy.
- Next surfable swell (1★+): Saturday 18 Jul, 8PM (local time) - 6ft (1.9m), 10s period with NW 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 (Jul 18) at 8PM. The primary swell is predicted to be 1.9m and 10s period with a secondary swell of 0.9m and 12s. 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 4.0m 13s and forecast to arrive on Wednesday (Jul 22) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 10s period and expected on Friday (Jul 17) at 2PM.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 18th Jul) | 6ft (1.9m) 10s |
| Best Surf | 2PM (Wed 22nd Jul) | 13ft (4.0m) 13s |
| Most Powerful | 11AM (Wed 22nd Jul) | 13ft (4.0m) 13s |
Table - best surf conditions forecast for Matanzas over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s in store for Matanzas.
First up, it’s a reef break, very consistent, and exposed to the swell. The water is sitting at 54°, which is a bit colder than normal for this time of year – so don’t be fooled by the summer dates, you’ll want a decent spring suit.
Honestly, the next few days are a write-off. Thursday afternoon and Friday are a mess with heavy rain, strong winds, and messy surf. The swell is there but the conditions are just poor. We’ve got a gap of a couple of days where the surf is not really worth paddling out for.
The first real hope comes on Sunday the 19th. The morning shows a 5ft swell from the WNW with an 11-second period and a light offshore breeze from the ENE. That’s clean. The afternoon gets even better – glassy conditions with a 4ft WNW swell. The combined energy is moderate (761 in the morning, 592 in the afternoon). This is your best bet for the first week. It’s not massive, but it’ll be fun and clean for an intermediate.
Monday the 20th also holds clean, glassy conditions, but the swell drops a bit to 4ft and 3ft. Still decent.
Then we hit another rough patch. Tuesday and Wednesday see onshore junk and a big spike in size – Wednesday morning has a 13ft swell from the W with a 13-second period, but it’s blown out with cross-onshore winds. That’s a lot of water moving (combined energy over 5000), but the wind ruins it. That’s more of a kite-surfing kind of day.
Now, here’s the standout of the whole outlook: Thursday the 23rd. The morning session is looking excellent. A 10ft swell from the W with a 12-second period, and a light offshore breeze from the E. The combined energy is strong (2285). This is solid, powerful groundswell, and with offshore wind, Matanzas will be firing. This is only for experienced surfers though – that size is serious. The afternoon drops a bit to 8ft, but still with clean-ish conditions.
After that, the swell backs off, and we’re into smaller, more marginal surf for the rest of the month. The morning of the 28th looks okay with a 3ft SSW swell and a 13-second period, clean conditions, but nothing to write home about. The 29th sees a bump in size again (8ft) but with cross-shore winds, so it’s messy.
Bottom line: don’t waste your time this week. Get out on Sunday the 19th for a fun, clean session, or hold out for Thursday the 23rd if you’ve got the skills for a solid, powerful swell with clean conditions. That’s the one to circle.
Rusty.
Short Range ForecastHeavy rain (total 106mm), heaviest during Fri morning. Very mild (max 14°C on Fri afternoon, min 11°C on Fri morning). Winds decreasing (gales from the N on Thu afternoon, light winds from the SE by Sun morning). | Days 5-7 Weather SummaryHeavy rain (total 56mm), heaviest during Tue morning. Very mild (max 13°C on Mon afternoon, min 10°C on Mon morning). Winds increasing (calm on Sun night, strong winds from the N by Tue morning). | |||||||||||||||||||
Thu 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||
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) | WNW 11 | WNW 10 | WNW 10 | SW 13 | SW 13 | WNW 9 | NW 9 | WNW 12 | WNW 11 | WNW 11 | W 11 | W 11 | W 11 | W 11 | W 11 | SW 26 | WNW 13 | W 13 | W 12 | W 13 |
Wave Graph | ||||||||||||||||||||
2337 | 1082 | 527 | 246 | 330 | 673 | 599 | 923 | 582 | 407 | 350 | 298 | 248 | 157 | 62 | 27 | 3606 | 5239 | 4155 | 3602 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross | cross-on | cross | cross | cross-off | off | glassy | glassy | cross-off | glassy | cross | cross | cross | cross-off | cross-on | cross-off | cross-off |
High Tide | 00:21AM1.04m | 12:29PM1.56m | 1:09AM1.06m | 1:14PM1.43m | 1:57AM1.08m | 1:59PM1.27m | 2:48AM1.08m | 2:46PM1.10m | 3:42AM1.09m | 3:40PM0.95m | 4:43AM1.09m | 4:47PM0.82m | ||||||||
Low Tide | 6:27PM-0.05m | 5:58AM0.10m | 7:10PM-0.01m | 6:49AM0.17m | 7:51PM0.06m | 7:44AM0.26m | 8:32PM0.14m | 8:45AM0.35m | 9:14PM0.23m | 9:56AM0.43m | 10:00PM0.32m | 11:20AM0.47m | 10:52PM0.39m | |||||||
— | — | 7:48 | — | — | 7:48 | — | — | 7:48 | — | — | 7:48 | — | — | 7:47 | — | — | 7:47 | — | — | |
5:57 | — | — | 5:58 | — | — | 5:58 | — | — | 5:59 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | |
mm | 22 | 15 | 34 | 16 | 13 | 3 | 2 | 1 | — | — | 4 | 1 | — | 8 | 13 | 12 | 12 | 6 | 2 | 1 |
Temp °C | 12 | 13 | 13 | 14 | 14 | 14 | 14 | 12 | 12 | 12 | 12 | 10 | 13 | 13 | 12 | 12 | 13 | 13 | 12 | 12 |
Feels °C | -1 | 5 | 7 | 6 | 6 | 9 | 9 | 9 | 10 | 11 | 11 | 6 | 12 | 12 | 4 | 4 | 6 | 8 | 8 | 8 |
Swell 1 Height (m) Direction Period (s) | WNW 11 | WNW 10 | WNW 10 | SW 13 | SW 13 | WNW 9 | NW 9 | WNW 12 | WNW 11 | WNW 11 | W 11 | W 11 | N 9 | W 11 | W 11 | SSW 10 | WNW 13 | W 13 | W 12 | W 13 |
2337 | 1082 | 527 | 246 | 330 | 673 | 599 | 923 | 582 | 407 | 350 | 298 | 194 | 157 | 62 | 10 | 3606 | 5239 | 4155 | 3602 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 9 | SW 8 | — | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 11 | SW 11 | W 11 | SW 10 | SW 10 | SW 15 | WSW 25 | SW 12 | SW 22 | SW 21 |
133 | 313 | 129 | 68 | — | 256 | 403 | 246 | 179 | 185 | 121 | 119 | 248 | 51 | 16 | 9 | 63 | 35 | 74 | 113 | |
Swell 3 Height (m) Direction Period (s) | SW 12 | SW 11 | SW 14 | W 15 | — | W 13 | W 12 | N 7 | — | N 7 | NW 11 | NW 11 | SW 11 | SSW 6 | SW 17 | SW 26 | — | WSW 24 | — | — |
34 | 19 | 265 | 38 | — | 90 | 109 | 38 | — | 8 | 5 | 5 | 90 | 4 | 11 | 27 | — | 55 | — | — | |
Wind waves Height (m) Direction Period (s) | N 10 | N 10 | NNW 9 | NNW 10 | NNW 10 | N 9 | N 8 | — | — | — | — | N 8 | — | N 9 | NNW 9 | NNW 9 | — | — | — | — |
2481 | 1146 | 955 | 2273 | 2990 | 351 | 160 | — | — | — | — | 104 | — | 235 | 2019 | 1354 | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 157 | 79 | 55 | 229 | 435 | 364 | 157 | 0 | 0 | 0 | 0 | 0 | 0 | 291 | 157 | 435 | 134 | 248 | 121 | 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.










