Surf Forecasts:
Triangulo surf forecast from 4 Sep 2026:
- Best quality surf: Friday 4 Sep, 10AM (local time) - 5ft (1.6m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Friday 4 Sep, 7AM (local time) - 5ft (1.6m), 16s period, SW swell with 1,297 kJ wave energy.
- Next surfable swell (1★+): Friday 4 Sep, 10AM (local time) - 5ft (1.6m), 16s period with SW 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 Friday (Sep 04) at 10AM. The primary swell is predicted to be 1.6m and 16s period with a secondary swell of 0.8m and 7s. 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 1.6m 16s and forecast to arrive on Friday (Sep 04) at 7AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (-05) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Fri 4th Sep) | 5ft (1.6m) 16s |
| Best Surf | 10AM (Fri 4th Sep) | 5ft (1.6m) 16s |
| Most Powerful | 7AM (Fri 4th Sep) | 5ft (1.6m) 16s |
Table - best surf conditions forecast for Triangulo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the cards for the coming weeks.
We’re looking at a very specific window here, with only one spot really offering anything, and it's a bit of a quirky one. The first real action doesn't kick off until Friday, September 4th.
The Standout Window
The standout by a mile is Friday morning, September 4th at Triangulo. This is a sheltered reef setup that’s inconsistent, so when it lines up, you pay attention. We’ve got a solid 5ft swell pumping in from the SW, and here’s the magic: the wind is light and cross-offshore. That means the face is going to be smooth as glass. The period is a very long 16 seconds, so this is proper groundswell with real energy behind it – you can feel the power in the water (combined swell energy is 1363, which is strong). This is the one to circle on your calendar. Water temps are about average for this time of year.
The Rest of the Run
Friday afternoon at Triangulo drops off. The swell holds at 5ft but the wind swings cross-shore and picks up, making things a bit bumpy. The rest of the first week is a slow decline. Saturday and Sunday see the swell easing from 5ft down to 3ft, with the wind staying cross-shore. It’s not bad, but it’s not special. By Monday, the 7th, the swell drops below 3ft and the wind turns cross-onshore.
The Lull
From around Monday the 7th onwards, things get pretty marginal. The swell hangs around the 3ft to 4ft mark for most of the second week, but the period shortens up, and the conditions are frequently described as poor. You’re looking at a lot of cross-shore chop and onshore crud. There’s a brief spike in energy on Wednesday the 9th with a 3ft swell and a 16-second period, but the wind is a moderate breeze, so it’ll be lumpy.
The Second Week
Into the second week, from September 11th onward, it gets bleak. The swell flips to a short-period 8-second S swell. At 4ft, it’s just too short and messy to be any good for a spot like Triangulo. The combined energy readings drop into the low hundreds (313-452), confirming the lack of grunt. It’s essentially a blank run of poor conditions right through to the end of the forecast window on September 18th.
Honestly, if you don’t have a board in the water on Friday morning the 4th, you might be waiting a while. The forecast can always change, but right now, it’s a one-morning show.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Fri morning, min 18°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Mon morning, min 18°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | |||||||||||||||
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 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 18 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1297 | 1025 | 998 | 769 | 656 | 503 | 431 | 330 | 370 | 310 | 416 | 424 | 529 | 549 | 453 | 404 | 318 | 427 | 542 | 528 | 459 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross-on | cross | cross-off | cross | cross | cross-off | cross | cross-off | cross-off | cross | cross-off | cross-off |
High Tide | 9:51AM0.53m | 00:37AM0.77m | 11:28AM0.47m | 1:59AM0.83m | 1:19PM0.47m | 3:01AM0.89m | 2:43PM0.51m | 3:51AM0.95m | 3:44PM0.58m | 4:34AM0.99m | 4:36PM0.65m | 5:12AM1.00m | 5:23PM0.71m | ||||||||
Low Tide | 5:41AM0.45m | 4:41PM0.19m | 7:59AM0.42m | 6:10PM0.18m | 9:11AM0.36m | 7:36PM0.16m | 9:56AM0.30m | 8:43PM0.12m | 10:34AM0.24m | 9:39PM0.09m | 11:08AM0.19m | 10:29PM0.08m | 11:41AM0.15m | 11:16PM0.09m | |||||||
 | |  | | | | |  | | | | | | | | | | | |  | | |
 | 6:09 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:05 | — | — | 6:05 | — | — |
 | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 18 | 20 | 20 | 18 | 19 | 20 | 18 | 20 | 20 | 19 | 20 | 20 | 18 | 20 | 20 | 18 | 20 | 19 | 18 |
Feels °C | 19 | 18 | 17 | 19 | 19 | 17 | 19 | 20 | 17 | 20 | 20 | 20 | 19 | 19 | 17 | 19 | 19 | 16 | 18 | 17 | 18 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | S 10 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 16 | SW 15 | SW 14 | SSW 7 |
| kJ | 1297 | 1025 | 998 | 769 | 656 | 503 | 431 | 330 | 231 | 146 | 416 | 424 | 529 | 549 | 453 | 404 | 295 | 427 | 542 | 528 | 166 |
Swell 2 Height (m) Direction Period (s) | S 7 | SSW 9 | — | S 7 | S 7 | S 8 | S 10 | S 10 | S 10 | SW 16 | S 10 | S 9 | S 9 | S 9 | S 9 | S 9 | SW 16 | SW 13 | S 6 | NW 12 | SW 14 |
| kJ | 57 | 8 | — | 45 | 47 | 74 | 149 | 149 | 146 | 310 | 116 | 134 | 109 | 109 | 78 | 101 | 318 | 239 | 104 | 5 | 459 |
Swell 3 Height (m) Direction Period (s) | SSW 10 | SSW 9 | — | W 11 | SW 22 | SW 21 | SSW 20 | SW 18 | SW 18 | SW 12 | SW 12 | SW 12 | SW 19 | SW 20 | SW 18 | SW 17 | NW 10 | NW 10 | — | — | — |
| kJ | 9 | 8 | — | 2 | 19 | 71 | 253 | 275 | 370 | 207 | 139 | 137 | 179 | 134 | 311 | 362 | 4 | 4 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | S 7 | S 7 | — | — | — | — | — | — | — | — | — | — | — | S 4 | S 4 | S 9 | S 5 | — | S 7 | — |
| kJ | — | 57 | 72 | — | — | — | — | — | — | — | — | — | — | — | 6 | 14 | 96 | 56 | — | 110 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 2 | 0 | 2 | 2 | 0 | 2 | 2 | 0 | 2 | 2 | 0 | 2 | 2 | 29 | 2 | 2 | 29 | 2 | 2 | 0 |
Best forecast wave conditions in Lima | |||||||||||||||||||||
Best forecast wave conditions in Peru | |||||||||||||||||||||
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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.
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