Surf Forecasts:
Hornitos surf forecast from 1 Sep 2026:
- Best quality surf: Tuesday 1 Sep, 2AM (local time) - 5ft (1.5m), 12s period, SW swell with glassy winds.
- Most powerful swell: Friday 4 Sep, 2PM (local time) - 4ft (1.2m), 14s period, SW swell with 614 kJ wave energy.
- Next surfable swell (1★+): Tuesday 1 Sep, 2AM (local time) - 5ft (1.5m), 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 Tuesday (Sep 01) at 2AM. The primary swell is predicted to be 1.5m and 12s period with a secondary swell of 0.3m and 16s. 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 14s and forecast to arrive on Friday (Sep 04) at 2PM. Winds are predicted to be onshore at the time the swell arrives.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 1st Sep) | 5ft (1.5m) 12s |
| Best Surf | 2AM (Tue 1st Sep) | 5ft (1.5m) 12s |
| Most Powerful | 2PM (Fri 4th Sep) | 4ft (1.2m) 14s |
Table - best surf conditions forecast for Hornitos over the next 16 days.
The Lowdown
Alright, Rusty here again, switching to feet and Fahrenheit.
The water is sitting at about 65°, which is a solid 5° warmer than usual for this time of year. That’s noticeably warm – you’ll be in boardies.
Monday the 31st of August is a washout. Cross-on wind, poor surf, combined swell energy is a moderate 362. Not worth it. Tuesday the 1st of September morning is still marginal, but the afternoon is the real deal. The wind goes glassy, the swell is a clean 4ft from the SW with an 11-second period, and the energy is 474. That’s the best session on offer. It’s consistent here, so you might have a few others out, but for a Tuesday afternoon, it’s a score.
Wednesday the 2nd of September afternoon is glassy again, but smaller: 3ft from the WSW with a 9-second period, energy at 339. Rideable, but not as good.
From Thursday the 3rd of September through to Monday the 7th of September, it’s a long stretch of marginal surf. Onshore winds in the mornings, cross-on or poor in the afternoons. Swell runs from 2ft to 4ft, with periods hitting 18 seconds on the 3rd and 6th – that’s very long period groundswell, but at a beach break like Hornitos, it tends to be too straight and hard to read. The energy peaks at 668 on the 4th, but the wind kills it.
From Monday the 7th of September afternoon onward, it’s dead. Swell drops to 2ft to 3ft, energy falls to weak numbers (down to 132 on the 13th), and the wind is mostly onshore or cross-on. No standouts in that second week at all.
The only real window is Tuesday 1st September afternoon. Glassy conditions, 4ft of SW swell with solid period, and moderate energy. That’s the one.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Mon afternoon, min 16°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Sat afternoon, min 16°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | ||||||||||||||
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) | WSW 11 | SW 12 | SW 11 | SW 11 | SW 11 | WSW 11 | WSW 9 | SW 17 | SW 18 | SW 16 | WSW 16 | WSW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 18 | SW 18 | SW 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 261 | 603 | 403 | 303 | 268 | 196 | 148 | 181 | 312 | 395 | 441 | 561 | 482 | 412 | 249 | 238 | 199 | 255 | 246 | 261 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-on | glassy | glassy | cross-on | glassy | glassy | on | cross-on | cross | on | on | glassy | on | on | glassy | on | cross-on | glassy |
High Tide | 11:39PM0.99m | 11:42AM0.91m | 00:20AM1.00m | 12:24PM0.80m | 1:10AM1.00m | 1:16PM0.69m | 2:13AM0.99m | 2:30PM0.60m | 3:30AM1.00m | 4:10PM0.56m | 4:52AM1.05m | 5:42PM0.59m | ||||||||
Low Tide | 5:23PM0.09m | 5:46AM0.20m | 5:53PM0.13m | 6:39AM0.24m | 6:28PM0.17m | 7:45AM0.29m | 7:13PM0.22m | 9:12AM0.31m | 8:14PM0.26m | 10:51AM0.28m | 9:37PM0.28m | 12:11PM0.21m | 11:04PM0.25m | |||||||
 |  | | | | | | | | | | |  |  | | | | | | | |
 | — | — | 6:50 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 7:46 | — | — |
 | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:31 | — | — | 7:31 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 22 | 23 | 22 | 19 | 20 | 20 | 18 | 20 | 21 | 20 | 21 | 21 | 19 | 22 | 23 | 22 | 23 | 23 | 22 |
Feels °C | 22 | 20 | 22 | 22 | 20 | 20 | 20 | 19 | 19 | 20 | 21 | 20 | 20 | 20 | 21 | 22 | 22 | 22 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | WSW 11 | SW 12 | SW 11 | SW 11 | SW 11 | WSW 11 | WSW 9 | WSW 10 | SW 18 | SW 16 | WSW 16 | WSW 14 | SW 14 | SW 13 | SW 10 | SW 10 | SW 10 | SW 9 | SW 10 | SW 9 |
| kJ | 261 | 603 | 403 | 303 | 268 | 196 | 148 | 81 | 312 | 395 | 441 | 561 | 482 | 412 | 163 | 163 | 134 | 99 | 139 | 128 |
Swell 2 Height (m) Direction Period (s) | SW 13 | SW 16 | SW 18 | SW 15 | SW 19 | SW 18 | SW 19 | SW 17 | SSW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 9 | SW 13 | SW 13 | SW 13 | SW 11 | SW 18 | SW 16 |
| kJ | 28 | 41 | 109 | 77 | 175 | 116 | 127 | 181 | 56 | 51 | 59 | 107 | 144 | 125 | 249 | 238 | 199 | 127 | 246 | 261 |
Swell 3 Height (m) Direction Period (s) | SW 18 | WSW 20 | — | SW 19 | — | SW 14 | SW 14 | SSW 10 | WSW 10 | SW 9 | WSW 11 | — | — | — | SW 23 | SW 21 | SW 20 | SW 18 | SW 12 | SW 12 |
| kJ | 50 | 37 | — | 94 | — | 65 | 64 | 39 | 56 | 22 | 49 | — | — | — | 21 | 72 | 186 | 255 | 90 | 71 |
Wind waves Height (m) Direction Period (s) | SW 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 305 | 0 | 51 | 0 | 0 | 127 | 0 | 0 | 127 | 61 | 51 | 305 | 78 | 0 | 172 | 61 | 0 | 127 | 305 | 0 |
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.
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