Surf Forecasts:
Hornitos surf forecast from 19 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 2AM (local time) - 3ft (0.9m), 12s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 19 Aug, 2PM (local time) - 4ft (1.2m), 12s period, SW swell with 389 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 2AM (local time) - 3ft (0.9m), 12s period with SW swell.
Best Forecast Surf Conditions for Hornitos this week:
The surf forecast for Hornitos over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 19) at 2AM. The primary swell is predicted to be 0.9m and 12s period with a secondary swell of 0.8m and 6s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Hornitos in the next 16 days are 1.2m 12s and forecast to arrive on Wednesday (Aug 19) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 19th Aug) | 3ft (0.9m) 12s |
| Best Surf | 2AM (Wed 19th Aug) | 3ft (0.9m) 12s |
| Most Powerful | 2PM (Wed 19th Aug) | 4ft (1.2m) 12s |
Table - best surf conditions forecast for Hornitos over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s coming our way for Hornitos over the next couple of weeks. It’s a bit of a slow burner, but there’s a glimmer of hope if you’re patient.
We’ve got a real quiet spell to start. From Wednesday the 19th of August right through to the end of the month, it’s pretty bleak. There are a few days with tiny 1ft to 3ft SW swell but the wind is mostly a messy cross or cross-onshore, and the wave energy is weak, barely pushing above 100 (combined energy). Honestly, you’re looking at over a week of nothing worth paddling out for. The morning of Friday the 21st offers a moment of glassy conditions, but with a short period swell of 9 seconds and only 3ft, it’s still just ordinary. That’s a long gap with no real recommendations.
Now, if you can hold out, things finally start to look more interesting as we head into the end of August and the start of September. The standout period kicks off on Friday the 28th of August. We’ve got a proper groundswell arriving from the WSW, pushing 4ft in the morning with a very long period of 17 seconds. The combined energy jumps to a strong 1417 – that’s serious power for Hornitos. By the afternoon, it’s up to 6ft, still with a long 16 second period. The wind is a light cross-onshore, which will keep it a bit lumpy, but the quality of the swell is undeniable.
Saturday the 29th sees the peak, with 7ft of WSW swell in the morning and a period of 14 seconds. That’s getting into the expert territory for sure – this is not a day for beginners. The energy is still huge at 1589. The wind stays a light cross-onshore. The crowd factor is listed as “sometimes,” so you might have a few locals out, but it won’t be a zoo. For a break that’s fairly exposed to the SW, this is the best window we’ve got. The water temp is about average for this time of year, so no surprises there.
Then, into the first week of September, Wednesday the 2nd brings another pulse: 6ft of SW swell with a solid 13 second period and strong energy (1678). It’s another good option, but by then we’re looking at a more distant call, so less certain. The wind is still a light cross-onshore, which is the main caveat across these better days – we never get pure offshore, just clean-ish.
If the swell gets over 5ft and the quality is marginal, a beach setup like this might actually be more appealing to kite surfers than paddle surfers on the windier afternoons, so keep that in mind.
Bottom line: the first week and a half is a write-off. But the last few days of August and the start of September offer some real, powerful, long-period groundswell. It won’t be perfect, but it’ll be surfable and punchy.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue night. Warm (max 24°C on Thu morning, min 16°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Mon morning, min 16°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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 12 | SW 12 | SW 12 | SW 8 | SW 14 | SW 14 | SW 13 | WSW 13 | SW 9 | SW 9 | SW 11 | SW 9 | SW 10 | SW 11 | SW 11 | SW 10 | SW 14 | SW 14 | WSW 12 |
Wave Graph | |||||||||||||||||||
248 | 268 | 190 | 187 | 248 | 248 | 180 | 112 | 112 | 99 | 62 | 42 | 98 | 92 | 40 | 30 | 31 | 69 | 91 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross | cross-off | on | cross-on | glassy | cross-on | glassy | cross | cross-on | cross-on | glassy | on | on | cross-on | cross-on | cross-on | glassy |
High Tide | 1:57AM0.95m | 1:57PM0.69m | 2:56AM0.91m | 3:04PM0.60m | 4:06AM0.90m | 4:35PM0.55m | 5:19AM0.91m | 6:03PM0.55m | 6:21AM0.96m | 7:03PM0.58m | 7:10AM1.01m | 7:45PM0.62m | |||||||
Low Tide | 8:27AM0.33m | 7:59PM0.26m | 9:52AM0.37m | 8:51PM0.31m | 11:28AM0.35m | 10:03PM0.34m | 12:43PM0.31m | 11:19PM0.33m | 1:33PM0.25m | 00:20AM0.30m | 2:11PM0.20m | 1:07AM0.25m | |||||||
— | 7:03 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:58 | — | — | |
6:25 | — | 6:25 | — | — | 6:27 | — | — | 6:27 | — | — | 6:27 | — | — | 6:28 | — | — | 6:28 | — | |
mm | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 20 | 22 | 21 | 24 | 24 | 23 | 22 | 23 | 22 | 21 | 21 | 19 | 21 | 22 | 22 | 23 | 23 | 23 |
Feels °C | 12 | 17 | 18 | 19 | 22 | 23 | 22 | 22 | 23 | 23 | 21 | 21 | 20 | 20 | 22 | 22 | 21 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 12 | SW 8 | SW 8 | SW 8 | SW 8 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 10 | SW 11 | SW 11 | SSW 9 | SW 9 | SW 14 | WSW 12 |
248 | 268 | 190 | 187 | 126 | 120 | 77 | 112 | 112 | 99 | 62 | 38 | 98 | 92 | 40 | 30 | 20 | 69 | 91 | |
Swell 2 Height (m) Direction Period (s) | WNW 6 | SW 15 | SW 15 | SW 13 | SW 14 | SW 14 | SW 13 | WSW 13 | WSW 12 | SW 12 | SW 11 | SW 11 | SW 12 | WSW 10 | SW 9 | SW 10 | SW 9 | SSW 11 | SW 13 |
36 | 143 | 174 | 109 | 248 | 248 | 180 | 108 | 99 | 67 | 59 | 42 | 23 | 10 | 19 | 25 | 22 | 49 | 63 | |
Swell 3 Height (m) Direction Period (s) | SW 16 | W 5 | W 12 | SW 16 | — | — | SW 10 | W 21 | SW 20 | W 12 | SW 18 | WSW 11 | SW 17 | NNW 3 | W 10 | SW 15 | SW 14 | WSW 9 | SSW 11 |
96 | 15 | 3 | 161 | — | — | 26 | 9 | 15 | 11 | 13 | 12 | 11 | 1 | 8 | 9 | 31 | 8 | 23 | |
Wind waves Height (m) Direction Period (s) | — | — | SSW 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 4 |
— | — | 56 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 172 | 498 | 0 | 127 | 127 | 0 | 61 | 0 | 61 | 127 | 78 | 0 | 127 | 78 | 61 | 305 | 61 | 0 |
Best forecast wave conditions in Antofagasta | |||||||||||||||||||
Best forecast wave conditions in Chile | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Hornitos Surf forecast
The above surf forecast table for Hornitos provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Hornitos can be found by selecting the local surf guide option on the grey menu. Our Hornitos 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 (Hornitos) 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 Hornitos 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.
Hornitos is 22 km (14 miles) from the city of Mejillones. If you plan a holiday in Antofagasta, look for hotels and other accommodation in Mejillones. Mejillones has rooms for a wide range of budgets as well as car hire and transport links.











