Surf Forecasts:
Matanzas surf forecast from 21 Jul 2026:
- Best quality surf: Friday 24 Jul, 2AM (local time) - 8ft (2.5m), 12s period, W swell with offshore winds.
- Most powerful swell: Thursday 23 Jul, 11PM (local time) - 8ft (2.5m), 12s period, W swell with 1,848 kJ wave energy.
- Next surfable swell (1★+): Wednesday 22 Jul, 5AM (local time) - 6ft (1.8m), 8s 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 Wednesday (Jul 22) at 5AM. The primary swell is predicted to be 1.8m and 8s period with a secondary swell of 0.3m and 13s. 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 2.5m 12s and forecast to arrive on Thursday (Jul 23) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 7s period and expected on Tuesday (Jul 21) at 2PM.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Wed 22nd Jul) | 6ft (1.8m) 8s |
| Best Surf | 2AM (Fri 24th Jul) | 8ft (2.5m) 12s |
| Most Powerful | 11PM (Thu 23rd Jul) | 8ft (2.5m) 12s |
Table - best surf conditions forecast for Matanzas over the next 16 days.
The Lowdown
Alright folks, let’s break this down for the next couple weeks. We’ve got a slow start, then a proper pump, then some heavy, big stuff.
It starts with a dud on Tuesday the 21st at Matanzas (reef). Small, messy, strong northerly wind – don't bother. Wednesday the 22nd is where it turns on. Swell hits 1.9m from the WNW, period around 10 seconds, and the energy is moderate at 843. The big news is the afternoon goes glassy. That’s a major win for clean waves. Good for stronger intermediates. Water temp is about 55°, normal for the time of year.
Thursday the 23rd has more size but less clean wind. The afternoon pulse gets a 12-second period, giving the waves more push – energy hits 996. Friday the 24th brings 2.1m from the west, but the afternoon wind turns cross-onshore, messing up the face.
The standouts: Saturday morning the 25th is a glassy, flat calm morning with a smaller 1.2m swell. Perfect for a clean, cruisy session. But for power, Sunday the 26th morning is the real gem – 1.6m west swell with a 13-second period, energy at 1237, and light cross-off wind. That reef will hold those waves beautifully.
Best of the bunch: Wednesday the 22nd afternoon (glassy) and Saturday morning the 25th (also glassy) are the top picks for the first week.
Then the second week gets serious. Monday the 27th pushes into 2.2m groundswell with energy at 1512. Wednesday the 29th brings glassy conditions again early with a 2.2m WSW swell at a very long 13 seconds – energy at 1568. That’s a powerful, long-period groundswell. For a reef, that’s going to be incredible, but it’s experts only.
After that, we’re looking at 3.0m+ waves with energy hitting 3451 (very strong) on July 31st. The wind gets messy and strong, with a cross-chop. That’s heavy, scary water. Thursday the 30th has 2.5m waves with 25 mph winds – more for kite surfers than paddle surfers. By August 1st, the energy is still massive but the wind is onshore and lumpy.
From August 2nd onward, the swell drops and the wind turns poor with a lot of cross and onshore slop. The absolute best window is the Wednesday the 29th glassy morning and the Sunday the 26th clean morning. Get on the 26th for the combo of size and cleanliness.
Rusty.
Short Range ForecastHeavy rain (total 32mm), heaviest during Tue morning. Very mild (max 15°C on Wed afternoon, min 10°C on Thu afternoon). Winds decreasing (strong winds from the N on Tue afternoon, calm by Wed afternoon). | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Sun night. Very mild (max 17°C on Fri afternoon, min 11°C on Fri morning). Wind will be generally light. | ||||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||
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) | W 11 | W 11 | WNW 8 | WNW 10 | W 10 | W 10 | W 9 | W 12 | W 12 | W 11 | W 11 | W 10 | W 10 | WSW 15 | WSW 14 | W 13 | W 10 | W 11 | W 11 | W 11 | W 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 114 | 82 | 212 | 763 | 720 | 426 | 282 | 902 | 1623 | 1011 | 804 | 450 | 294 | 222 | 407 | 862 | 325 | 1144 | 1213 | 813 | 1834 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | glassy | cross-off | cross-off | cross-off | off | cross-off | cross-on | cross-off | glassy | cross | off | cross-off | cross-off | cross-off | cross | cross-off | cross-off |
High Tide | 3:40PM0.95m | 4:43AM1.09m | 4:47PM0.82m | 5:48AM1.11m | 6:12PM0.76m | 6:52AM1.15m | 7:33PM0.75m | 7:47AM1.20m | 8:32PM0.78m | 8:34AM1.26m | 9:15PM0.82m | 9:15AM1.33m | 9:50PM0.85m | ||||||||
Low Tide | 9:56AM0.43m | 10:00PM0.32m | 11:20AM0.47m | 10:52PM0.39m | 12:46PM0.45m | 11:53PM0.43m | 1:56PM0.39m | 00:54AM0.43m | 2:48PM0.33m | 1:48AM0.40m | 3:29PM0.26m | 2:33AM0.35m | 4:05PM0.21m | 3:13AM0.29m | |||||||
 |  |  |  | |  |  |  |  | | | | | |  | | |  | | | | |
 | 7:47 | — | — | 7:47 | — | — | 7:46 | — | — | 7:45 | — | — | 7:45 | — | — | 7:43 | — | — | 7:43 | — | — |
 | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:02 | — | — | 6:02 | — | — | 6:04 | — |
mm | 15 | 5 | 2 | — | — | — | — | 7 | 3 | — | — | — | — | — | — | — | — | 13 | 17 | 4 | 5 |
Temp °C | 12 | 14 | 14 | 14 | 15 | 14 | 13 | 14 | 12 | 13 | 17 | 15 | 16 | 17 | 17 | 15 | 16 | 15 | 14 | 15 | 14 |
Feels °C | 4 | 5 | 7 | 12 | 14 | 13 | 10 | 11 | 10 | 10 | 15 | 13 | 15 | 14 | 14 | 13 | 14 | 13 | 13 | 15 | 14 |
Swell 1 Height (m) Direction Period (s) | W 11 | W 11 | WNW 8 | WNW 10 | W 10 | W 10 | W 9 | W 12 | W 12 | W 11 | W 11 | W 10 | W 10 | W 10 | W 9 | W 13 | W 10 | W 11 | W 11 | W 11 | W 13 |
| kJ | 114 | 82 | 212 | 763 | 720 | 426 | 282 | 902 | 1623 | 1011 | 804 | 450 | 294 | 204 | 240 | 862 | 325 | 1144 | 1213 | 813 | 1834 |
Swell 2 Height (m) Direction Period (s) | SW 10 | SW 10 | NNW 7 | N 7 | SW 12 | SW 11 | SW 20 | SW 19 | SW 18 | SW 21 | SW 21 | SW 8 | W 15 | WSW 15 | WSW 14 | WSW 19 | WSW 17 | WSW 16 | WSW 15 | WSW 14 | W 18 |
| kJ | 25 | 25 | 86 | 32 | 68 | 29 | 60 | 90 | 49 | 115 | 111 | 43 | 172 | 222 | 407 | 363 | 297 | 341 | 296 | 521 | 57 |
Swell 3 Height (m) Direction Period (s) | SW 17 | WNW 9 | W 11 | SW 13 | N 6 | SW 21 | SSW 10 | SW 10 | S 10 | NW 19 | W 18 | W 16 | SW 8 | SW 10 | WSW 20 | NW 17 | WSW 13 | — | SW 9 | — | NW 16 |
| kJ | 11 | 17 | 59 | 80 | 12 | 112 | 10 | 4 | 2 | 15 | 57 | 134 | 45 | 76 | 132 | 12 | 176 | — | 3 | — | 10 |
Wind waves Height (m) Direction Period (s) | N 7 | N 7 | N 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 553 | 529 | 191 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 157 | 157 | 43 | 0 | 0 | 0 | 43 | 364 | 0 | 16 | 48 | 0 | 0 | 16 | 0 | 0 | 60 | 0 | 43 | 0 | 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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