Surf Forecasts:
Cupula surf forecast from 28 Aug 2026:
- Best quality surf: Friday 28 Aug, 11PM (local time) - 6ft (1.9m), 14s period, WSW swell with cross-offshore winds.
- Most powerful swell: Friday 28 Aug, 5AM (local time) - 7.5ft (2.3m), 16s period, SW swell with 2,513 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 11PM (local time) - 6ft (1.9m), 14s period with WSW swell.
Best Forecast Surf Conditions for Cupula this week:
The surf forecast for Cupula over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 28) at 11PM. The primary swell is predicted to be 1.9m and 14s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Cupula in the next 16 days are 2.3m 16s and forecast to arrive on Friday (Aug 28) at 5AM. 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+) | 11PM (Fri 28th Aug) | 6ft (1.9m) 14s |
| Best Surf | 11PM (Fri 28th Aug) | 6ft (1.9m) 14s |
| Most Powerful | 5AM (Fri 28th Aug) | 7.5ft (2.3m) 16s |
Table - best surf conditions forecast for Cupula over the next 16 days.
The Lowdown
Alright, Rusty here. Let's have a look at what's cookin' for Cupula over the next couple of weeks. It's a reef and point set-up, exposed to the south-west, and it's a consistent spot, but honestly, the first week or so is lookin' pretty average.
We've got some solid energy pushin' in, but the winds are mostly cross or cross-on, so the face is gonna be a bit bumpy. The wave energy is strong to very strong, with values around 2061 on Friday morning, droppin' through the weekend. The swell is a long-period groundswell from the SW, about 7 ft Friday morning, with a period of 15 seconds. That's a classic groundswell for a point, so the shape should be there, but the wind's gonna mess with the surface. Water temp is about average for the time of year.
To be real, there's not much to get stoked about in the first several days. The rating's low, and the wave comments keep sayin' 'marginal at best'. The crowd is possible here.
Now, if we push out a bit, there's a flicker of something more interestin' around Tuesday the 8th of September. We get a bump in energy up to 1315 in the morning, with a 4 ft SW swell and a very long period of 16 seconds. That's proper groundswell, and with the wind still cross-shore from the SW, it's not glassy but the shape should be good. The combined energy of all swells is strong (1315). This is probably the best on offer for the whole window. But it's still got that 'marginal' tag, so keep your expectations in check.
A couple of days later, on Wednesday the 9th of September, we finally see some offshore wind. In the morning, a light WNW breeze at 6 mph, with a clean 4 ft SW swell (period 15 seconds) and moderate energy (914). This could be the real standout if you're after a clean wave. The wind'll be light and offshore, so the face should be smooth. The afternoon has a super light WSW at 3 mph, which is nearly glassy. That Wednesday morning is the one to circle on the calendar as a promising, but less certain, long-range option.
After that, it fades out again. The 11th and 12th of September see energy drop and the wind pick back up, so it's back to being a bit of a write-off. For the points in between, it's just not worth paddlin' out.
So, to wrap it up: it's a slow start. The surf is just okay for the first week, with bumpy conditions. The best bet is that Wednesday the 9th of September with the offshore wind and a solid 4 ft groundswell. The crowd is possible there, so you might have it fairly empty if you're early. For the first week or so, don't get your hopes up. If there's a lot of west in that swell direction and it's a bit fat for the beachies, the point setup here should handle it.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Fri night, min 15°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Very mild (max 19°C on Mon morning, min 15°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | ||||||||||||||
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 16 | SW 15 | SW 14 | WSW 14 | SW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | SW 11 | WSW 12 | SW 12 | WSW 11 | SW 11 | SW 10 | WSW 10 | SW 18 |
Wave Graph | |||||||||||||||||||
2107 | 2061 | 1712 | 1310 | 1110 | 904 | 702 | 545 | 464 | 456 | 335 | 471 | 239 | 192 | 154 | 297 | 217 | 63 | 260 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | glassy | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide | 9:29PM0.81m | 9:34AM1.18m | 10:01PM0.87m | 10:05AM1.15m | 10:33PM0.93m | 10:37AM1.10m | 11:07PM0.97m | 11:11AM1.02m | 11:43PM1.01m | 11:47AM0.92m | 00:25AM1.02m | 12:29PM0.82m | 1:14AM1.02m | ||||||
Low Tide | 3:08AM0.14m | 4:07PM0.07m | 3:45AM0.13m | 4:33PM0.06m | 4:24AM0.14m | 4:59PM0.07m | 5:05AM0.16m | 5:27PM0.09m | 5:50AM0.20m | 5:58PM0.13m | 6:43AM0.24m | 6:33PM0.17m | |||||||
— | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | |
6:29 | — | 6:29 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 16 | 17 | 17 | 17 | 16 | 17 | 16 | 17 | 19 | 18 | 18 | 19 | 17 | 16 | 17 | 16 | 15 |
Feels °C | 15 | 15 | 15 | 17 | 16 | 15 | 15 | 16 | 15 | 15 | 16 | 15 | 17 | 17 | 15 | 15 | 16 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 14 | WSW 14 | SW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | SW 11 | WSW 12 | SW 8 | SW 8 | SW 11 | SW 10 | SW 7 | SW 7 |
2107 | 2061 | 1712 | 1310 | 1110 | 904 | 702 | 545 | 464 | 456 | 335 | 471 | 239 | 94 | 79 | 297 | 217 | 41 | 45 | |
Swell 2 Height (m) Direction Period (s) | — | — | NW 14 | — | — | — | — | — | SW 20 | SW 19 | SW 18 | SW 18 | SW 7 | SW 12 | WSW 11 | SW 19 | SW 18 | WSW 10 | SW 18 |
— | — | 7 | — | — | — | — | — | 15 | 15 | 13 | 52 | 65 | 192 | 154 | 122 | 118 | 63 | 260 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | SW 19 | SW 18 | SW 15 | SW 14 | SW 14 | SW 11 | WSW 10 |
— | — | — | — | — | — | — | — | — | — | — | — | 59 | 109 | 76 | 32 | 65 | 55 | 55 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | SW 6 | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | 45 | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 36 | 395 | 311 | 95 | 217 | 395 | 0 | 217 | 395 | 90 | 395 | 395 | 217 | 217 | 168 | 16 | 395 | 392 | 90 |
Best forecast wave conditions in Antofagasta | |||||||||||||||||||
Best forecast wave conditions in Chile | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Cupula Surf forecast
The above surf forecast table for Cupula provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Cupula can be found by selecting the local surf guide option on the grey menu. Our Cupula 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 (Cupula) 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 Cupula 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.
Are you planning a holiday in Antofagasta? If you are looking for accommodation near Cupula, camping, hotels and holiday cottages in Antofagasta, consider staying in Antofagasta which is 13 km (8 miles) away. Alternatively, find information about places to stay and car hire in Mejillones which is 72 km (45 miles) away











