Surf Forecasts:
Infernillo surf forecast from 20 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 5AM (local time) - 6ft (1.9m), 12s period, WSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 26 Aug, 8AM (local time) - 7ft (2.1m), 12s period, WSW swell with 1,268 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 8PM (local time) - 5ft (1.5m), 12s period with WSW swell.
Best Forecast Surf Conditions for Infernillo this week:
The surf forecast for Infernillo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 8PM. The primary swell is predicted to be 1.5m and 12s period with a secondary swell of 1.4m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Infernillo in the next 16 days are 2.1m 12s and forecast to arrive on Wednesday (Aug 26) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Friday (Aug 21) at 8AM.
| Wave Type | Time (-04) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Thu 20th Aug) | 5ft (1.5m) 12s |
| Best Surf | 5AM (Wed 26th Aug) | 6ft (1.9m) 12s |
| Most Powerful | 8AM (Wed 26th Aug) | 7ft (2.1m) 12s |
Table - best surf conditions forecast for Infernillo over the next 16 days.
The Lowdown
Alright, fellow wave hunters, Rusty here, and I’ve been staring at the charts for our little corner of the coast. Let’s talk about what’s brewing.
We’ve got a bit of a mixed bag coming our way, but there are definitely some sessions worth getting excited about. The water temp is sitting right about normal for the time of year, so no surprises there.
The early part of this run, starting Thursday the 20th, is a bit of a tease. We’ve got a moderate 6ft swell from the WSW with a decent 13-second period, and the combined energy is strong at (1152). Sounds good, right? Problem is, the wind is a cross-shore from the S at 9 mph, putting a bit of a chop on the face. It’s surfable for an intermediate, but it’s not going to be a classic. The afternoon gets worse with the wind picking up. This pattern of so-so, cross-shore wind and marginal conditions hangs around through Friday and Saturday, with the swell dropping off. By Saturday afternoon it gets short and choppy, and I’d call that one a washout.
The first real glimmer of hope comes late Sunday the 23rd. The swell has dropped to just 2ft, but check out the afternoon: glassy conditions from the NNW at just 3 mph. That’s a whisper. The period jumps back to 11 seconds, too. It’s small, but it will be clean. Then Monday the 24th is a write-off with onshore wind, but Tuesday the 25th serves up some magic. We get a 3-3ft groundswell from the WSW with a period of 14-15 seconds, and it’s glassy as a mirror all day. That’s a classic dawny for the points and reefs—long lines, easy paddling, and nobody out. The combined energy is moderate (419-436), but the quality will be high.
Now, here’s the standout. Hold onto your boardies for Thursday the 27th afternoon. The swell pumps up to 12ft from the WSW with a very long 17-second period. The combined energy is an enormous (6845). This is big, powerful, and perfect for a reef setup like Infernillo. The wind is light cross-shore, keeping things relatively tidy. That’s a session for experienced surfers only, as anything over 8ft is for the crew with skills. Friday the 28th keeps the size at a solid 13ft, but the wind gets a bit stronger. Still, for the bold, it’s on.
Saturday the 29th morning might just be the pick of the whole run. You’ve got 10ft of swell from the WSW, a 13-second period, and the wind is dead calm—glassy. The energy is very strong (2450). It’s described as excellent surf for experienced surfers, and I can see why. That’s a session you call in sick for.
After that, things settle down into the first week of September with smaller, clean-ish swells, but nothing that really screams at you. There’s a big, long-period pulse on Thursday the 3rd afternoon and into Friday the 4th, but the wind gets messy again.
So, to cut through the noise: if you want clean, fun waves, get out Tuesday the 25th. It’s small but perfect. If you’re an experienced charger looking for serious power, the standout is Thursday the 27th afternoon through to Saturday the 29th morning. Don’t sleep on that glassy Saturday dawn patrol—it could be the wave of the month.
Stay stoked,
Rusty
Short Range ForecastMostly dry. Very mild (max 18°C on Fri afternoon, min 10°C on Thu morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Tue afternoon, min 11°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
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) | WSW 13 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 10 | WSW 11 | SW 7 | SW 8 | SW 7 | W 11 | WSW 13 | WSW 11 | WSW 11 | SW 15 | WSW 15 | WSW 14 | WSW 13 | WSW 12 | WSW 12 | W 11 |
Wave Graph | |||||||||||||||||||||
1152 | 1080 | 512 | 785 | 674 | 214 | 187 | 171 | 229 | 137 | 110 | 294 | 229 | 206 | 212 | 272 | 290 | 878 | 1268 | 1072 | 943 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross | cross | cross-off | cross | cross | off | cross-on | glassy | glassy | cross-on | cross-on | glassy | glassy | glassy | glassy | cross | cross | glassy |
High Tide | 4:06PM0.74m | 5:01AM1.07m | 6:01PM0.69m | 6:24AM1.09m | 7:35PM0.72m | 7:30AM1.16m | 8:26PM0.77m | 8:18AM1.23m | 9:01PM0.83m | 8:56AM1.31m | 9:31PM0.90m | 9:30AM1.37m | 9:59PM0.96m | ||||||||
Low Tide | 10:49AM0.48m | 9:48PM0.48m | 12:32PM0.47m | 11:13PM0.52m | 1:47PM0.40m | 00:36AM0.49m | 2:35PM0.33m | 1:36AM0.43m | 3:11PM0.25m | 2:21AM0.35m | 3:41PM0.18m | 2:59AM0.27m | 4:09PM0.13m | 3:35AM0.21m | |||||||
7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | |
— | 6:21 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:23 | — | — | 6:24 | — | — | 6:24 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 13 | 14 | 13 | 15 | 18 | 14 | 16 | 15 | 13 | 15 | 14 | 12 | 14 | 14 | 15 | 15 | 17 | 14 | 15 | 15 | 14 |
Feels °C | 10 | 10 | 10 | 12 | 14 | 12 | 14 | 11 | 12 | 13 | 13 | 11 | 11 | 12 | 13 | 14 | 15 | 12 | 13 | 13 | 14 |
Swell 1 Height (m) Direction Period (s) | WSW 13 | WSW 12 | SW 7 | WSW 11 | WSW 11 | SW 7 | SW 8 | WSW 10 | SW 8 | SW 7 | SW 7 | WSW 13 | WSW 11 | WSW 11 | WSW 10 | WSW 15 | WSW 9 | WSW 13 | WSW 12 | WSW 12 | W 11 |
1152 | 1080 | 217 | 785 | 674 | 112 | 128 | 104 | 229 | 137 | 65 | 294 | 229 | 206 | 140 | 272 | 146 | 878 | 1268 | 1072 | 943 | |
Swell 2 Height (m) Direction Period (s) | — | SW 21 | WSW 12 | SW 19 | WSW 13 | WSW 10 | WSW 11 | SSW 10 | W 10 | W 9 | W 11 | SW 6 | SSW 12 | SW 12 | SW 15 | WSW 10 | WSW 14 | — | WSW 21 | WSW 20 | WSW 21 |
— | 17 | 512 | 14 | 60 | 214 | 187 | 35 | 50 | 41 | 110 | 23 | 101 | 152 | 212 | 105 | 290 | — | 43 | 40 | 141 | |
Swell 3 Height (m) Direction Period (s) | — | — | SW 20 | — | SW 18 | WSW 12 | SSW 13 | W 14 | SSW 11 | W 11 | SSW 11 | SSW 13 | SW 6 | SW 16 | SW 12 | SW 13 | — | — | — | — | — |
— | — | 15 | — | 13 | 83 | 16 | 4 | 48 | 64 | 45 | 114 | 11 | 42 | 34 | 42 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | SW 7 | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | 171 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1 | 316 | 0 | 1 | 169 | 0 | 1 | 91 | 0 | 54 | 0 | 0 | 109 | 1 | 0 | 0 | 0 | 0 | 6 | 6 | 0 |
Best forecast wave conditions in Santiago | |||||||||||||||||||||
Best forecast wave conditions in Chile | |||||||||||||||||||||
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Information about the Infernillo Surf forecast
The above surf forecast table for Infernillo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Infernillo can be found by selecting the local surf guide option on the grey menu. Our Infernillo 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 (Infernillo) 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 Infernillo 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.
Infernillo is 67 km (42 miles) from Santa Cruz. If you plan a holiday in Santiago, look for hotels and other accommodation in Santa Cruz. Santa Cruz has rooms for a wide range of budgets as well as car hire and transport links.











