Surf Forecasts:
Maitencillo surf forecast from 16 Aug 2026:
- Best quality surf: Saturday 22 Aug, 5AM (local time) - 10ft (3.0m), 10s period, SW swell with cross-shore winds.
- Most powerful swell: Friday 21 Aug, 11PM (local time) - 8ft (2.5m), 12s period, SW swell with 1,839 kJ wave energy.
- Next surfable swell (1★+): Sunday 16 Aug, 5AM (local time) - 3.5ft (1.0m), 14s period with SW swell.
Best Forecast Surf Conditions for Maitencillo this week:
The surf forecast for Maitencillo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 16) at 5AM. The primary swell is predicted to be 1.0m and 14s period with a secondary swell of 1.1m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Maitencillo in the next 16 days are 2.5m 12s and forecast to arrive on Friday (Aug 21) 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 0.2m 6s period and expected on Thursday (Aug 20) at 2AM.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Sun 16th Aug) | 3.5ft (1.0m) 14s |
| Best Surf | 5AM (Sat 22nd Aug) | 10ft (3.0m) 10s |
| Most Powerful | 11PM (Fri 21st Aug) | 8ft (2.5m) 12s |
Table - best surf conditions forecast for Maitencillo over the next 16 days.
The Lowdown
Alright, my friends, Rusty here, taking a good long look at what’s on offer at Maitencillo (Valparaiso). It’s a bit of a mixed forecast for the next couple of weeks, but don't write it off just yet. There a couple of proper windows where it's going to be firing, and a whole lot of time where you might be better off waxing your board at home.
We kick things off this Sunday the 16th with some average waves. It's small, around 3ft, and that cross-shore breeze is going to have it all chopped up. Not much joy there. Monday the 17th is similar in the morning, a bit rainy and bumpy. But hold on, the afternoon looks a treat. That wind goes light and glassy, and while it's still small at 3ft, it'll be clean. That's your first chance to get a few peelers before it drops.
The surf picks up on Tuesday the 18th, getting to 5ft with a bit more energy in the water. But it’s messy with an onshore wind. However, Wednesday the 19th is a standout. The wind turns light and offshore, and we've got a solid 6ft of SW groundswell with a long 15-second period. The energy is cranking. This is a proper session, clean and powerful – definitely one for the more experienced heads. The afternoon stays glassy as the swell holds. That's your pick of the first week.
The rest of the week goes a bit flat and choppy. Thursday the 20th and Friday the 21st are nothing to write home about, with the swell dropping. Friday afternoon gets a quick bump to around 8ft, but the period is a lousy 8 seconds, and the wind is on it. That spells close-outs and choppy chaos. More of a fight than a surf.
The weekend is still pretty grovelly. The 22nd and 23rd have some size, but the period is short, and the onshore wind is messing with the shape. There's a clean window on Sunday afternoon when the wind drops, but the waves will be soft and gutless.
Now, next week starts off really small. From the 24th to the 27th, we're looking at tiny, ankle-to-knee high dribble. Perfect for the longboard if you’re desperate, but there’s no power behind it.
But here's the long-range gold. We've got a proper swell filling in around the 28th of August, with 7-8ft waves on the way. The wind is a little cross, but there's size. Then the 29th of August looks like the crown jewel of the whole run. The swell holds at around 7ft from the WSW, and the wind goes absolutely dead – glassy, calm conditions. This is for experienced surfers only, with plenty of power and energy. The forecast is calling it excellent, and I agree. Mark that date. After that, it starts to back down, but the 31st brings another long-period SW swell, and it looks clean again, even if a bit smaller.
So, to sum it up. Your two big standouts are the morning of Wednesday, August 19th – clean, solid groundswell. And the Saturday, August 29th – a proper, powerful swell with zero wind. Both of these are solid, quality options. The rest of the time, you'll be working for nothing. Get your board ready for the 29th, lads.
Rusty, signing off.
Short Range ForecastLight rain (total 7mm), mostly falling on Mon morning. Very mild (max 18°C on Tue afternoon, min 11°C on Mon morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 17°C on Thu afternoon, min 12°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | ||||||||||||||
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 15 | SW 14 | SW 13 | SW 8 | WSW 14 | WSW 13 | SW 12 | SW 12 | SW 11 | SW 14 | SW 15 | SW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | SW 8 | SW 8 | SW 11 |
Wave Graph | |||||||||||||||||||
424 | 363 | 336 | 435 | 379 | 357 | 895 | 723 | 780 | 711 | 1526 | 1533 | 1422 | 943 | 711 | 452 | 372 | 717 | 1538 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-on | cross-on | glassy | cross-off | cross | cross-on | cross | glassy | on | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross |
High Tide | 00:28AM1.19m | 12:37PM1.30m | 1:09AM1.19m | 1:16PM1.14m | 1:51AM1.17m | 1:58PM0.99m | 2:39AM1.13m | 2:47PM0.84m | 3:36AM1.08m | 3:56PM0.73m | 4:51AM1.06m | 5:46PM0.68m | |||||||
Low Tide | 6:24AM0.14m | 6:56PM0.09m | 7:13AM0.23m | 7:29PM0.19m | 8:06AM0.33m | 8:04PM0.29m | 9:12AM0.42m | 8:44PM0.38m | 10:39AM0.47m | 9:40PM0.46m | 12:20PM0.46m | 11:03PM0.50m | |||||||
— | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — | 7:16 | — | — | |
6:16 | — | 6:17 | — | — | 6:19 | — | — | 6:19 | — | — | 6:20 | — | — | 6:21 | — | — | 6:21 | — | |
mm | 2 | — | — | 1 | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 14 | 15 | 13 | 11 | 12 | 13 | 16 | 18 | 14 | 15 | 14 | 13 | 15 | 17 | 15 | 15 | 16 | 16 |
Feels °C | 14 | 12 | 12 | 10 | 8 | 11 | 12 | 14 | 15 | 12 | 15 | 13 | 13 | 14 | 14 | 13 | 12 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | W 9 | SW 14 | SW 13 | WSW 14 | SW 8 | SW 8 | SW 12 | SW 16 | SW 15 | SW 7 | SW 15 | SW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 11 | WSW 13 | — |
185 | 363 | 336 | 352 | 200 | 169 | 895 | 381 | 566 | 198 | 1526 | 1533 | 1422 | 943 | 711 | 452 | 280 | 596 | — | |
Swell 2 Height (m) Direction Period (s) | SW 15 | W 8 | NW 10 | NW 10 | WSW 14 | WSW 13 | SW 18 | SW 16 | — | SW 14 | SW 8 | SW 8 | N 6 | N 6 | — | WSW 18 | WSW 15 | — | — |
424 | 82 | 4 | 4 | 379 | 357 | 84 | 381 | — | 711 | 239 | 161 | 3 | 1 | — | 32 | 372 | — | — | |
Swell 3 Height (m) Direction Period (s) | NW 11 | NW 11 | — | NW 10 | NW 10 | NW 10 | N 10 | — | — | SW 17 | — | — | — | — | — | — | — | — | — |
5 | 4 | — | 4 | 4 | 4 | 2 | — | — | 611 | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | SW 5 | SW 6 | SW 8 | — | — | — | SW 12 | SW 11 | — | — | — | — | SSW 4 | SSW 5 | SW 7 | SW 8 | SW 8 | SW 11 |
— | 64 | 287 | 435 | — | — | — | 723 | 780 | — | — | — | — | 10 | 128 | 287 | 350 | 717 | 1538 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 25 | 510 | 25 | 67 | 0 | 0 | 25 | 510 | 11 | 0 | 161 | 0 | 25 | 310 | 25 | 25 | 310 | 25 |
Best forecast wave conditions in Santiago | |||||||||||||||||||
Best forecast wave conditions in Chile | |||||||||||||||||||
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Information about the Maitencillo Surf forecast
The above surf forecast table for Maitencillo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Maitencillo can be found by selecting the local surf guide option on the grey menu. Our Maitencillo 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 (Maitencillo) 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 Maitencillo 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.
Maitencillo is 12 km (7 miles) from Quintero. If you plan a holiday in Santiago, look for hotels and other accommodation in Quintero. Quintero has rooms for a wide range of budgets as well as car hire and transport links.











