Surf Forecasts:
Triangulo surf forecast from 20 Aug 2026:
- Best quality surf: Thursday 20 Aug, 4AM (local time) - 6.5ft (2.0m), 9s period, SSW swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 4AM (local time) - 6.5ft (2.0m), 9s period, SSW swell with 613 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 4AM (local time) - 6.5ft (2.0m), 9s period with SSW swell.
Best Forecast Surf Conditions for Triangulo this week:
The surf forecast for Triangulo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 4AM. The primary swell is predicted to be 2.0m and 9s period with a secondary swell of 0.4m and 14s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Triangulo in the next 16 days are 2.0m 9s and forecast to arrive on Thursday (Aug 20) at 4AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (-05) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Thu 20th Aug) | 6.5ft (2.0m) 9s |
| Best Surf | 4AM (Thu 20th Aug) | 6.5ft (2.0m) 9s |
| Most Powerful | 4AM (Thu 20th Aug) | 6.5ft (2.0m) 9s |
Table - best surf conditions forecast for Triangulo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with ya – this 16-day window is a bit of a mixed bag for Triangulo. We’ve got a solid run of proper swell coming through, but the conditions are gonna be fiddly, and a lot of it is just not going to line up clean.
The first surf worth mentioning kicks off on Wednesday the 19th of August. The water is sitting at 71° – that’s a massive 9° warmer than usual for this time of year, so it’s feeling more like a tropical bath than a typical winter dip. The swell is a decent 6ft from the SSW with a period of 9 seconds, and the combined energy is moderate at 772. The wind is a cross-off from the South at 12 mph, which is actually a good sign. The report says "clean", so while the swell is a bit on the short-period side, for a spot that’s sheltered and inconsistent, this is a solid, rideable option. The only bummer is it’s an inconsistent spot, so you might have to wait for your waves.
After that, things get a bit ordinary. From Thursday the 20th right through until the end of August, the wind is mostly cross-on or cross-shore, and the surf quality drops right off. The heights fade from 6ft down to next to nothing. You’ll see a few longer-period swells on the 22nd and 23rd (19-second and 18-second periods), but those are tiny 1ft waves with no push – just a lot of water moving around with no real shape. It’s a flat spell, basically.
Now, the real standout, the one you want to circle on the calendar, is Friday the 28th of August. That morning we’ve got a solid 7ft of SW groundswell pumping in with a 17-second period. The combined energy rockets up to 2511 – that’s strong energy. By the afternoon, it’s nudging 8ft with a 16-second period and energy at 2602. The wind is a light cross-on from the SSW at 6 mph, so it’ll be a bit textured but still very surfable. This is a big, powerful swell for a reef break. The wave comment says "marginal," but with that much energy and a long period, it’s going to be a proper session for the experienced crew. The long period means it’ll be a bit more lined up and better for a point or reef setup like this.
That big swell holds through the 29th and 30th of August, with 7ft to 6ft swell and plenty of energy (1607 and 1222). The wind stays light and cross-shore, so it’s not perfect, but it’s a huge step up from the flat spell before it. After that, it slowly fades into the first days of September, but the wind gets a bit more messy and the swell periods drop back to 9 seconds, so the quality goes with it.
The best call for the whole period is the morning of the 28th and the 29th. It’s going to be big, powerful, and a long-period groundswell – that’s expert territory. The 6ft on the 19th is a good, smaller option for the beginners if you can catch the clean window.
Rusty, signing off.
Short Range ForecastMostly dry. Warm (max 21°C on Fri morning, min 18°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Sat afternoon, min 18°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||
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) | SSW 9 | S 9 | SSW 9 | SSW 9 | SSW 9 | S 9 | S 8 | S 8 | S 8 | SW 19 | SW 18 | SW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SSW 14 | SW 12 |
Wave Graph | ||||||||||||||||||||
585 | 699 | 540 | 484 | 318 | 215 | 177 | 108 | 82 | 92 | 83 | 108 | 96 | 67 | 87 | 58 | 56 | 74 | 136 | 65 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | on | cross-on | cross-off | cross-on | cross-on | cross | cross-on | cross-on | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off |
High Tide | 00:12AM0.68m | 10:36AM0.50m | 1:39AM0.69m | 11:54AM0.45m | 2:51AM0.72m | 1:38PM0.43m | 3:41AM0.76m | 2:50PM0.45m | 4:18AM0.81m | 3:36PM0.48m | 4:49AM0.85m | 4:14PM0.51m | ||||||||
Low Tide | 4:40PM0.24m | 7:03AM0.46m | 5:39PM0.26m | 9:09AM0.43m | 6:54PM0.26m | 10:07AM0.39m | 8:02PM0.23m | 10:38AM0.36m | 8:53PM0.20m | 11:03AM0.34m | 9:35PM0.17m | 11:25AM0.31m | 10:10PM0.14m | |||||||
— | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | |
6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 20 | 20 | 19 | 21 | 20 | 19 | 21 | 21 | 19 | 21 | 20 | 19 | 20 | 20 | 19 | 20 | 20 | 19 |
Feels °C | 18 | 18 | 20 | 20 | 19 | 21 | 20 | 19 | 21 | 22 | 19 | 21 | 20 | 19 | 19 | 19 | 18 | 20 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | SSW 9 | SSW 9 | SSW 9 | SSW 9 | SSW 9 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 9 | S 9 | S 9 | S 8 | S 6 | S 6 |
585 | 554 | 540 | 484 | 318 | 215 | 177 | 108 | 82 | 61 | 60 | 63 | 66 | 51 | 55 | 55 | 53 | 35 | 32 | 24 | |
Swell 2 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 15 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 12 | SW 11 | SW 11 | SW 16 | SW 10 | SW 10 | SW 14 | SSW 14 | SW 12 |
120 | 69 | 80 | 91 | 132 | 97 | 109 | 80 | 51 | 49 | 43 | 47 | 43 | 41 | 87 | 35 | 35 | 74 | 136 | 65 | |
Swell 3 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 13 | SW 13 | SW 22 | SW 21 | SW 21 | SW 20 | SW 19 | SW 19 | SW 18 | SW 18 | SW 16 | SW 16 | SW 10 | SW 15 | SW 15 | SSW 12 | SSW 11 | S 11 |
67 | 75 | 28 | 7 | 18 | 18 | 17 | 60 | 58 | 92 | 83 | 108 | 96 | 67 | 35 | 58 | 56 | 48 | 43 | 59 | |
Wind waves Height (m) Direction Period (s) | — | S 9 | — | — | — | — | — | — | — | — | — | — | — | SSW 4 | S 4 | S 5 | S 5 | S 5 | — | — |
— | 699 | — | — | — | — | — | — | — | — | — | — | — | 5 | 9 | 17 | 20 | 29 | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 2 | 2 | 2 | 2 | 0 | 2 | 2 | 2 | 2 | 2 | 0 | 2 | 2 | 0 | 2 | 2 | 0 | 2 | 2 | 0 |
Best forecast wave conditions in Lima | ||||||||||||||||||||
Best forecast wave conditions in Peru | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Information about the Triangulo Surf forecast
The above surf forecast table for Triangulo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Triangulo can be found by selecting the local surf guide option on the grey menu. Our Triangulo 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 (Triangulo) 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 Triangulo 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.
Triangulo is 7 km (4 miles) from the city of Lima. If you plan a holiday in Lima, look for hotels and other accommodation in Lima. Lima has rooms for a wide range of budgets as well as car hire and transport links.











