Surf Forecasts:
Hornitos surf forecast from 2 Sep 2026:
- Best quality surf: Wednesday 2 Sep, 8PM (local time) - 1.5ft (0.5m), 19s period, SW swell with glassy winds.
- Most powerful swell: Friday 4 Sep, 11PM (local time) - 4.5ft (1.3m), 14s period, SW swell with 647 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 8PM (local time) - 1.5ft (0.5m), 19s 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 (Sep 02) at 8PM. The primary swell is predicted to be 0.5m and 19s period with a secondary swell of 0.9m and 10s. 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 14s and forecast to arrive on Friday (Sep 04) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Tuesday (Sep 08) at 6PM.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 2nd Sep) | 1.5ft (0.5m) 19s |
| Best Surf | 8PM (Wed 2nd Sep) | 1.5ft (0.5m) 19s |
| Most Powerful | 11PM (Fri 4th Sep) | 4.5ft (1.3m) 14s |
Table - best surf conditions forecast for Hornitos over the next 16 days.
The Lowdown
Hey, Rusty here. Let’s slice it up for Hornitos.
Right out of the gate, it’s looking like a 16-day run where the real action is packed into a tiny window. If you’re keen, the first couple days of September are just about it. The highlight shapes up for Thursday the 4th and Friday the 5th. We’ve got a solid south-west groundswell pushing in at around 4ft. The period hangs around 13 to 15 seconds, which gives you proper wave shape, like holding a good line. The wind’s light and offshore from the west and WSW both mornings, which means clean faces, peeling walls, and no chop. The combined energy reading hits a big 705 on the afternoon of the 5th, which is a strong pulse of power. Water temp sits at 66°, which is about 5° warmer than your usual early-September water – almost summer feeling.
After that though, honestly, things flatline. From Saturday the 6th through to the 17th you’re not looking at much. The swell drops back to a sloppy 2-3ft, and the offshores turn into cross-onshore during the day – that gentle breeze just ruins the face. The period shrinks below 10 seconds later in the second week, and wave energy dips hard, down into the low 200s. The forecast’s calling it ‘poor surf conditions’ from the 13th onward, and that’s no exaggeration. By the 16th and 17th of September, it’s just weak, choppy mess – not worth the tow.
So here’s the take: hit Hornitos on the 4th or 5th of September for the best of the run. That SW swell, solid period, and glassy mornings are worth getting up early for. After that, the window slams shut. Keep it salty.
Rusty.
Short Range ForecastMostly dry. Warm (max 21°C on Thu afternoon, min 16°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Sun morning, min 17°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | |||||||||||||||
AM | 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 11 | SW 19 | SW 17 | SW 18 | SW 16 | WSW 16 | WSW 15 | WSW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 18 | SW 17 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 220 | 179 | 181 | 312 | 395 | 441 | 568 | 561 | 628 | 336 | 238 | 170 | 197 | 190 | 206 | 305 | 293 | 281 | 285 | 245 | 173 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | glassy | on | cross-on | glassy | on | on | glassy | on | on | glassy | on | cross-on | glassy | on | on | cross | cross-on | cross-on | glassy |
High Tide | 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 | 6:02AM1.12m | 6:49PM0.66m | 6:59AM1.19m | 7:40PM0.75m | ||||||||
Low Tide | 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 | 1:07PM0.13m | 00:16AM0.19m | 1:53PM0.06m | 1:15AM0.13m | ||||||||
 | |  | | | | |  |  | | | | | | | | | | | | | |
 | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 7:46 | — | — | 7:45 | — | — | 7:43 | — | — |
 | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:31 | — | — | 7:31 | — | — | 7:31 | — | — | 7:32 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 20 | 18 | 20 | 21 | 20 | 21 | 21 | 19 | 22 | 22 | 21 | 24 | 24 | 22 | 23 | 23 | 21 | 20 | 21 | 19 |
Feels °C | 19 | 20 | 19 | 19 | 20 | 21 | 20 | 21 | 21 | 22 | 22 | 22 | 23 | 23 | 22 | 23 | 23 | 22 | 20 | 21 | 19 |
Swell 1 Height (m) Direction Period (s) | SW 11 | SW 9 | SW 10 | SW 18 | SW 16 | WSW 16 | WSW 15 | WSW 14 | SW 13 | SW 13 | SW 10 | SW 10 | SW 10 | SSW 10 | SW 9 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 |
| kJ | 220 | 125 | 94 | 312 | 395 | 441 | 568 | 561 | 628 | 336 | 196 | 137 | 94 | 115 | 86 | 305 | 293 | 281 | 285 | 245 | 173 |
Swell 2 Height (m) Direction Period (s) | SW 18 | SW 19 | SW 17 | WSW 9 | SW 9 | SW 9 | SW 9 | SW 9 | — | SW 10 | SW 13 | SW 13 | SW 12 | SW 12 | SW 16 | SW 9 | SSW 9 | SW 8 | SSW 8 | SW 8 | SW 18 |
| kJ | 116 | 179 | 181 | 50 | 51 | 61 | 91 | 144 | — | 151 | 238 | 170 | 137 | 114 | 206 | 65 | 50 | 32 | 25 | 16 | 79 |
Swell 3 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 10 | SW 10 | WSW 9 | WSW 11 | — | — | — | SW 23 | SW 21 | SW 20 | SW 18 | SW 17 | SW 12 | W 12 | W 11 | WSW 20 | NNW 4 | SW 19 | SW 8 |
| kJ | 65 | 64 | 25 | 48 | 34 | 49 | — | — | — | 21 | 72 | 134 | 197 | 190 | 87 | 3 | 2 | 39 | 2 | 89 | 16 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | N 3 | — | NNE 3 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | 2 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 127 | 78 | 0 | 127 | 305 | 0 | 127 | 51 | 0 | 127 | 61 | 0 | 127 | 305 | 0 | 127 | 61 | 51 | 78 | 78 | 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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