Hornitos Surf Break

Lat Long: 22.96° S 70.31° W

Hornitos Surf Forecast and Surf Report

Issued: 7 am 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Hornitos sea temperature is
18.0° C
2.3° 

Hornitos surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Hornitos surf forecast from 18 Aug 2026:

  • Best quality surf: Tuesday 18 Aug, 11PM (local time) - 3ft (0.9m), 13s period, SW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 19 Aug, 2PM (local time) - 4.5ft (1.3m), 12s period, SW swell with 440 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 18 Aug, 11PM (local time) - 3ft (0.9m), 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 Tuesday (Aug 18) at 11PM. The primary swell is predicted to be 0.9m and 13s period with a secondary swell of 0.9m and 6s. 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 1.3m 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 TypeTime (-04) & Date Wave Height & Period
Next good surf (1 star+)11PM (Tue 18th Aug)3ft (0.9m) 13s
Best Surf11PM (Tue 18th Aug)3ft (0.9m) 13s
Most Powerful 2PM (Wed 19th Aug)4.5ft (1.3m) 12s

Table - best surf conditions forecast for Hornitos over the next 16 days.


The Lowdown

G’day, Rusty here.

Alright, let’s have a look at what’s on the cards for Hornitos. To be straight with you, the next week or so is a bit of a struggle. We’ve got swell, sure, but it’s mostly small and the wind’s not playing ball. There are a couple of windows that look worth a paddle, but you’ll need to pick your moment.

The water’s sitting at a very warm 64°, which is 4° above the norm for this time of year – that’s much warmer than we’d expect, a real treat when you’re sitting out there.

For the first few days, we’re looking at waist-high waves around 3ft from the SW, but the wind is a cross or cross-onshore, making it pretty choppy and unappealing. The combined energy is moderate though, around 503 (moderate) on Tuesday morning. It’s not the sort of stuff that gets you out of bed.

Things get a little interesting on Thursday the 20th. Early morning, the wind switches to a light onshore from the WSW, but it’s light, only 3 mph, and the swell is 3ft from the SW with a period of 14 seconds. That longer period gives the waves some shape, but it’s still just a marginal call. The energy is moderate at 421.

Friday the 21st afternoon is where it gets closer to something you’d actually want to surf. It’s only 3ft from the SW, but the wind goes glassy – completely calm. That’s a major positive. The period has dropped to 9 seconds, so the waves are a bit weaker, but if you’re desperate for a clean, small wave session, this is your shot.

Then we hit a dry spell. From Saturday the 22nd through until Thursday the 28th, the swell drops to barely 2ft, and most of the time the wind isn’t helpful. Combined energy gets weak, down to 82 (weak) on Sunday the 23rd. It’s basically a no-go for a solid stretch.

But hold on – Thursday the 28th afternoon is the standout of the whole 16-day window. The swell builds to 3ft from the WSW, but the period jumps to 16 seconds – that’s proper groundswell with a lot of energy. The combined energy is 634 (moderate). The best part? Glassy conditions again, with a light air from the WNW. This is the cleanest and most promising surf of the run. That’s the session you want to circle.

The following days see a real increase in size but a trade-off in quality. Saturday the 30th of August morning has 6ft from the WSW, and it pushes over 7ft in the afternoon. Combined energy hits 1498 (strong) and 1592 (strong). That’s a lot of ocean moving, but the wind is onshore and the period drops to 14-15 seconds. For Hornitos, this is more of an expert-only day – beginners will find it too big at over 5ft, and with the cross-onshore wind later in the weekend, it’s going to be lumpy. The period is still decent, so the waves will have some punch, but it’s not going to be the clean, lined-up stuff we saw on the 28th. This is for experienced surfers only.

After that, the swell fades back down to around 4ft by Monday the 31st, but the wind remains cross-onshore and the quality drops again.

So, overall, the best of the lot is Thursday the 28th of August afternoon. Small but glassy, with real deep ocean energy in the water. A close second for the bigger wave crew would be Saturday the 30th of August, but only if you’re comfortable in solid, messy conditions.

Rusty.

Short Range Forecast

Light rain (total 7mm), mostly falling on Tue night. Warm (max 25°C on Thu morning, min 15°C on Tue night). Winds decreasing (fresh winds from the NNW on Tue afternoon, calm by Thu night).

Days 4-6 Weather Summary

Mostly dry. Warm (max 22°C on Fri morning, min 17°C on Sat night). Wind will be generally light.

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
2
1
0
2
1
1
2
0
1
0
0
1
1
0
0
1
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
SW
13
1
SW
13
0.9
SW
12
1
SW
12
0.8
SW
12
0.6
SW
16
0.9
SW
14
0.8
SW
14
0.7
SW
13
0.6
WSW
13
0.8
SW
9
0.8
SW
9
0.6
SW
9
0.6
SW
9
0.7
SW
10
0.5
SW
9
0.4
SW
11
0.5
SW
9
0.4
SW
14
0.6
SW
13
0.6
SW
12
Wave Graph
Metric surfscale
Energy kJ
290
336
248
268
190
161
301
248
180
112
114
101
67
71
98
41
41
39
51
113
118
Wind (km/h)
20
NNW
30
NNW
5
SSE
5
SSW
20
SSW
10
SSE
5
WSW
10
SW
5
NE
10
WNW
5
W
5
NNW
10
W
5
NW
5
NE
10
WSW
10
SW
5
WNW
10
W
15
W
10
S
Wind State
cross-on
cross
glassy
cross-on
cross
cross-off
on
cross-on
glassy
cross-on
glassy
cross
on
glassy
cross-off
on
cross-on
glassy
on
on
cross
High Tide
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
7:10AM1.01m
7:45PM0.62m
Low Tide
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
2:11PM0.20m
1:07AM0.25m
part cloud
rain showers
rain showers
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:03
7:03
7:01
7:01
7:00
6:58
6:58
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:25
6:25
6:27
6:27
6:27
6:28
6:28
 mm
3
4
Temp °C
18
18
16
20
22
21
25
24
23
22
22
21
21
22
19
20
22
22
24
22
23
Feels °C
15
13
15
18
18
18
23
23
23
21
22
22
20
22
20
20
22
22
23
22
21
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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