Surf Forecasts:
Hornitos surf forecast from 17 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 2AM (local time) - 3ft (0.9m), 14s period, SW swell with cross-offshore winds.
- Most powerful swell: Tuesday 18 Aug, 2PM (local time) - 4ft (1.2m), 13s period, WSW swell with 491 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 8PM (local time) - 2.5ft (0.7m), 15s 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 Monday (Aug 17) at 8PM. The primary swell is predicted to be 0.7m and 15s period with a secondary swell of 0.5m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Hornitos in the next 16 days are 1.2m 13s and forecast to arrive on Tuesday (Aug 18) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Tuesday (Aug 18) at 5PM.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 17th Aug) | 2.5ft (0.7m) 15s |
| Best Surf | 2AM (Tue 18th Aug) | 3ft (0.9m) 14s |
| Most Powerful | 2PM (Tue 18th Aug) | 4ft (1.2m) 13s |
Table - best surf conditions forecast for Hornitos over the next 16 days.
The Lowdown
Alright, let’s get into the nitty-gritty. The next couple of weeks are a mix of flat spells and a late kick of real swell, but you’re going to need to be patient.
First thing – the water’s sitting at about 64°, which is roughly 4° warmer than it should be this time of year. That’s a genuine bonus, don’t ignore it.
The first few days are a bit of a bust. Monday afternoon has some swell, but it’s weak, cross-onshore, and lumpy – not worth getting wet for. Tuesday and Wednesday morning have a bit more size, but the wind’s going to make it messy. That Wednesday morning window is your first real chance – glassy and clean with a 3ft SW swell, but still on the smaller side.
From Thursday through the following weekend, it’s mostly small and poor. Think waist-high slop with a light cross-onshore breeze. There’s a moment on Saturday the 22nd afternoon where it turns glassy, but with only 2ft of swell, it’s a longboard day at best. Not much to get fired up about.
The real story is at the end of the run. Around Friday the 28th, you’ll see it start to build. By Saturday the 29th, a proper swell arrives – 7ft from the WSW with a 15 second period and strong energy (1700). That’s the standout. It’s a powerful groundswell with some real punch. The wind is light cross-onshore, so it won’t be perfect, but it’ll be the best surf we’ve seen in the whole forecast. This one is for the experienced crew – that size is way too much for beginners.
Sunday the 30th holds up too, with 5ft to 5ft and lighter winds. It’s promising, but it’s a week out, so don’t make plans just yet – long-range stuff is always a gamble. After that Monday, it fades and the wind picks back up, so that Saturday is your golden ticket.
One last thing – Hornitos is a consistent break, and it’s fairly exposed to the SW. When that bigger swell hits, the setup should be good. Just keep an eye on the wind as it gets closer.
Rusty out.
Short Range ForecastLight rain (total 8mm), mostly falling on Tue night. Warm (max 25°C on Thu morning, min 15°C on Tue night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Thu afternoon, min 18°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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) | SW 14 | SW 14 | SW 13 | WSW 13 | SW 12 | SW 12 | SW 12 | SW 16 | SW 14 | SW 14 | SW 13 | WSW 13 | SW 9 | SW 9 | SW 11 | SW 11 | SSW 10 | SW 11 | SW 11 | SW 10 |
Wave Graph | ||||||||||||||||||||
214 | 331 | 290 | 491 | 244 | 268 | 264 | 161 | 248 | 248 | 180 | 109 | 112 | 99 | 65 | 57 | 64 | 58 | 56 | 24 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-on | cross | cross | glassy | cross-on | cross-off | on | cross-on | glassy | cross-on | on | cross-on | cross-on | glassy | cross | cross-on | cross-on | cross-off |
High Tide | 1:06AM0.97m | 1:07PM0.82m | 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 | ||||||||
Low Tide | 6:42PM0.11m | 7:19AM0.27m | 7:18PM0.19m | 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 | |||||||
— | — | 7:03 | — | — | 7:03 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | |
6:25 | — | — | 6:25 | — | — | 6:25 | — | — | 6:27 | — | — | 6:27 | — | — | 6:27 | — | — | 6:28 | — | |
mm | — | — | — | 1 | 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 18 | 19 | 19 | 16 | 20 | 20 | 22 | 25 | 25 | 23 | 22 | 23 | 22 | 20 | 21 | 20 | 20 | 21 | 21 |
Feels °C | 17 | 17 | 15 | 15 | 14 | 19 | 17 | 19 | 23 | 23 | 22 | 21 | 23 | 23 | 19 | 21 | 21 | 19 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 13 | WSW 13 | SW 12 | SW 12 | SW 12 | SW 7 | SW 8 | SW 8 | SW 8 | SW 9 | SW 9 | SW 9 | SW 9 | SW 11 | SSW 10 | SW 9 | SW 11 | SW 10 |
214 | 331 | 290 | 491 | 244 | 268 | 264 | 132 | 117 | 123 | 88 | 109 | 112 | 99 | 65 | 57 | 64 | 41 | 56 | 24 | |
Swell 2 Height (m) Direction Period (s) | WSW 8 | W 13 | W 11 | WSW 18 | WNW 6 | SW 15 | SW 15 | SW 13 | SW 14 | SW 14 | SW 13 | WSW 13 | WSW 12 | WSW 12 | SW 11 | SW 9 | WSW 10 | SW 11 | SSW 9 | SW 8 |
38 | 51 | 149 | 32 | 36 | 143 | 174 | 140 | 248 | 248 | 180 | 109 | 99 | 93 | 59 | 37 | 20 | 58 | 31 | 17 | |
Swell 3 Height (m) Direction Period (s) | W 13 | WNW 6 | SW 20 | — | SW 16 | WNW 6 | W 12 | SW 16 | — | — | SW 10 | W 21 | SW 20 | SW 20 | N 3 | SW 13 | SW 12 | NNW 3 | W 10 | SW 16 |
3 | 13 | 15 | — | 96 | 17 | 3 | 161 | — | — | 4 | 9 | 15 | 15 | 1 | 28 | 23 | 1 | 2 | 10 | |
Wind waves Height (m) Direction Period (s) | — | — | — | NNE 3 | — | — | SW 4 | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | 9 | — | — | 14 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 90 | 0 | 127 | 299 | 51 | 0 | 305 | 0 | 78 | 78 | 0 | 61 | 51 | 61 | 127 | 0 | 51 | 63 | 61 | 51 |
Best forecast wave conditions in Antofagasta | ||||||||||||||||||||
Best forecast wave conditions in Chile | ||||||||||||||||||||
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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.











