Surf Forecasts:
Hornitos surf forecast from 21 Aug 2026:
- Best quality surf: Thursday 27 Aug, 8PM (local time) - 2.5ft (0.7m), 18s period, WSW swell with glassy winds.
- Most powerful swell: Friday 28 Aug, 2AM (local time) - 4.5ft (1.3m), 17s period, WSW swell with 900 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 5AM (local time) - 2.5ft (0.7m), 13s 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 Friday (Aug 21) at 5AM. The primary swell is predicted to be 0.7m and 13s period with a secondary swell of 0.8m and 8s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Hornitos in the next 16 days are 1.3m 17s and forecast to arrive on Friday (Aug 28) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Fri 21st Aug) | 2.5ft (0.7m) 13s |
| Best Surf | 8PM (Thu 27th Aug) | 2.5ft (0.7m) 18s |
| Most Powerful | 2AM (Fri 28th Aug) | 4.5ft (1.3m) 17s |
Table - best surf conditions forecast for Hornitos over the next 16 days.
The Lowdown
Alright, let’s talk Hornitos. Right now, it’s flat and dead quiet. This spot picks up southwest swell pretty well, but the first several days have next to nothing—tiny waves and mostly cross-on or glassy but tiny. The water temp is about normal for this time of year, so no surprises there.
The first real action comes on Friday 28th August. A solid pulse of SW groundswell hits, with waves at 7ft and a long 15-second period. The combined energy is strong at 1936. Wind is light offshore from the WSW, so it’ll be clean. That afternoon stays similar at 7ft, WSW direction, 16-second period, and energy at 2123, still offshore. This is the standout—clean, powerful, long-period groundswell. But at 7ft, it’s expert territory, and with that long period, waves will be a bit walled up on a beach break. Hornitos is a beach-and-reef setup, so it might handle it, but expect big, widely spaced sets.
Saturday 29th August is still solid at 6ft, but the wind goes cross-on from the WSW, so it’s less clean. Sunday 30th August drops to 4-5ft, but winds pick up to 12-15 mph from the SW, making it choppy. After that, it fades out and the winds stay messy, so the real focus is Friday 28th August.
For beginners, this whole stretch is a miss—too small early, then too big late. Experienced crew, circle Friday 28th August. It’s a clean, powerful groundswell window.
Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Fri afternoon, min 17°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Tue morning, min 18°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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 13 | WSW 13 | SW 9 | SW 9 | SW 9 | SW 9 | SW 10 | SW 9 | SW 11 | SW 10 | SW 9 | SSW 11 | SSW 8 | SW 8 | SSW 13 | SW 15 | WSW 14 | WSW 13 | WSW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 180 | 114 | 117 | 101 | 84 | 71 | 98 | 40 | 40 | 30 | 36 | 24 | 13 | 33 | 65 | 55 | 78 | 120 | 103 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | glassy | glassy | cross-on | cross-on | cross-off | glassy | cross-on | cross-on | cross-on | cross-on | cross | glassy | cross-on | cross | on | on | glassy |
High Tide | 4:06AM0.90m | 4:35PM0.55m | 5:19AM0.91m | 6:03PM0.55m | 6:21AM0.96m | 7:03PM0.58m | 7:10AM1.01m | 7:45PM0.62m | 7:50AM1.07m | 8:20PM0.68m | 8:26AM1.12m | 8:53PM0.73m | |||||||
Low Tide | 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 | 2:42PM0.15m | 1:48AM0.20m | 3:10PM0.12m | 2:25AM0.16m | ||||||
 |  | | | | | |  | |  | | | | | | | | | | |
 | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — | 6:56 | — | — |
 | 6:27 | — | 6:27 | — | — | 6:27 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:29 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 21 | 22 | 21 | 21 | 21 | 18 | 20 | 20 | 20 | 21 | 24 | 23 | 25 | 25 | 24 | 23 | 23 | 21 |
Feels °C | 22 | 21 | 22 | 22 | 21 | 21 | 18 | 20 | 20 | 21 | 20 | 23 | 21 | 25 | 24 | 23 | 23 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | SW 8 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 10 | SW 9 | SW 8 | SSW 9 | SW 9 | SW 8 | SSW 8 | SSW 13 | SW 4 | SW 15 | WSW 14 | WSW 13 | WSW 12 |
| kJ | 93 | 114 | 117 | 101 | 84 | 71 | 98 | 37 | 35 | 30 | 36 | 17 | 13 | 33 | 6 | 55 | 78 | 120 | 103 |
Swell 2 Height (m) Direction Period (s) | SW 13 | WSW 13 | WSW 12 | SW 12 | WSW 11 | SW 11 | SW 12 | SW 11 | SW 11 | SW 10 | SW 9 | SSW 11 | WSW 9 | SW 13 | SSW 13 | SW 11 | SW 5 | SW 5 | SW 10 |
| kJ | 180 | 108 | 99 | 66 | 47 | 30 | 23 | 40 | 40 | 25 | 22 | 24 | 9 | 27 | 65 | 30 | 10 | 10 | 61 |
Swell 3 Height (m) Direction Period (s) | SW 10 | W 21 | SW 20 | W 12 | SW 18 | WSW 11 | SW 17 | W 10 | W 10 | S 12 | SSW 12 | SW 9 | SSW 11 | WSW 9 | SW 12 | SSW 11 | SW 10 | SW 9 | WSW 21 |
| kJ | 26 | 9 | 15 | 11 | 13 | 12 | 11 | 8 | 2 | 12 | 13 | 13 | 11 | 8 | 35 | 25 | 24 | 22 | 44 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | SW 4 | SW 8 | — | SW 5 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 31 | — | 8 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 127 | 0 | 0 | 78 | 78 | 0 | 0 | 61 | 71 | 535 | 127 | 172 | 0 | 305 | 4 | 127 | 78 | 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.
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