Surf Forecasts:
Triangulo surf forecast from 13 Sep 2026:
- Best quality surf: Monday 14 Sep, 1AM (local time) - 5ft (1.6m), 8s period, SSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 15 Sep, 7AM (local time) - 3.5ft (1.1m), 16s period, SW swell with 546 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 1AM (local time) - 5ft (1.6m), 8s 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 Monday (Sep 14) at 1AM. The primary swell is predicted to be 1.6m and 8s period with a secondary swell of 0.6m and 19s. 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 1.1m 16s and forecast to arrive on Tuesday (Sep 15) at 7AM. 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+) | 1AM (Mon 14th Sep) | 5ft (1.6m) 8s |
| Best Surf | 1AM (Mon 14th Sep) | 5ft (1.6m) 8s |
| Most Powerful | 7AM (Tue 15th Sep) | 3.5ft (1.1m) 16s |
Table - best surf conditions forecast for Triangulo over the next 16 days.
The Lowdown
Alright, let’s switch to feet and miles per hour. Same story, different numbers.
Looking at the charts, it’s a lean period ahead. The only break we’ve got to talk about is Triangulo, a sheltered reef that doesn’t break all that often and is suited for beginners. Water temp is a balmy 69°, coming in nearly 7° warmer than average for this time of year—really unusual, you might be fine in boardshorts.
There’s a big dry spell upfront. Sunday and Monday are total washouts—tiny surf, cross-onshore breeze, and zero quality. You’re looking at a six-day gap before anything even gets a marginal call.
Monday morning, September 14th brings the first flicker of hope: a 3ft southwest swell with a very long period of 18 seconds. That’s pure groundswell energy (moderate, 704). The wind is light and cross-shore, so it’ll be clean, but the break is sheltered and that long period means the SW swell won’t have much juice. It’s a longboarder’s special if the tide cooperates—nothing more.
Tuesday the 15th is almost identical: 3ft swell from the southwest, 15-second period, light cross-shore wind. Clean but small. Energy is still moderate (629). You could get wet, but you might wish you hadn't.
The best wave of the bunch—and I mean the *only* wave worth planning around—hits on Saturday, September 26th. The swell bumps to 4ft from the southwest, period around 13 seconds, with light cross-shore wind. The combined energy sits at 480. It’s still called marginal but it’s the strongest we’ve got. The wind will be light, the sets will be clean, though with that period and the reef setup, expect longer lulls between waves. Crowds are *often* here on a small swell, so be ready to share.
Sunday the 27th holds onto 3ft of southwest swell with similar light cross-shore wind, and by Monday the 28th it starts fading.
The message is simple: mark your calendar for Saturday, September 26th at Triangulo. That’s your session. Everything else is flat, marginal, or just not worth the hassle. On the days with bigger wind and small chop, this setup might actually work better for kiting than surfing.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Sun morning, min 18°C on Sun afternoon). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Wed afternoon, min 18°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
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) | S 8 | SSW 8 | SSW 8 | SW 18 | SW 17 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 19 | SW 18 | SW 18 |
Wave Graph  | |||||||||||||||||||||
 kJ | 272 | 257 | 310 | 370 | 354 | 492 | 427 | 410 | 393 | 308 | 290 | 242 | 202 | 181 | 181 | 210 | 203 | 193 | 184 | 171 | 154 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross-off | cross | cross-off | cross | cross | cross-off | cross | cross | cross-off |
High Tide | 7:33PM0.81m | 7:24AM0.75m | 8:17PM0.79m | 7:53AM0.65m | 9:05PM0.76m | 8:20AM0.57m | 10:02PM0.72m | 8:45AM0.49m | 11:18PM0.69m | 9:04AM0.43m | 00:53AM0.69m | 11:32AM0.39m | 2:12AM0.71m | ||||||||
Low Tide | 1:12PM0.12m | 1:31AM0.25m | 1:40PM0.14m | 2:20AM0.32m | 2:09PM0.17m | 3:16AM0.38m | 2:40PM0.21m | 4:41AM0.43m | 3:16PM0.25m | 7:56AM0.43m | 4:11PM0.28m | 9:34AM0.39m | 5:57PM0.30m | ||||||||
 | |  | | | |  | | | | | | | | | | | | | | | |
 | 6:03 | — | — | 6:03 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — | 6:00 | — | — | 6:00 | — | — |
 | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — | — | 6:04 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 18 | 20 | 20 | 18 | 20 | 19 | 18 | 19 | 20 | 18 | 20 | 20 | 18 | 20 | 20 | 19 | 20 | 20 | 19 |
Feels °C | 20 | 17 | 17 | 19 | 20 | 18 | 19 | 18 | 18 | 18 | 19 | 18 | 19 | 20 | 17 | 19 | 19 | 19 | 19 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | S 8 | SW 11 | SSW 8 | SSW 8 | SSW 9 | S 9 | S 9 | S 9 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 |
| kJ | 272 | 77 | 310 | 293 | 264 | 230 | 190 | 151 | 393 | 308 | 290 | 242 | 202 | 181 | 181 | 210 | 203 | 193 | 174 | 171 | 116 |
Swell 2 Height (m) Direction Period (s) | SW 12 | S 11 | SW 19 | SW 18 | SW 17 | SW 16 | SW 15 | SW 15 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | SW 21 | SW 20 | S 5 | S 6 | SW 18 |
| kJ | 84 | 59 | 234 | 370 | 354 | 492 | 427 | 410 | 113 | 90 | 68 | 66 | 46 | 33 | 33 | 32 | 115 | 137 | 20 | 31 | 154 |
Swell 3 Height (m) Direction Period (s) | SSW 11 | SW 18 | W 11 | WSW 14 | WSW 13 | — | S 24 | SW 24 | SW 24 | SW 23 | SW 22 | SW 21 | SSW 21 | SSW 20 | SW 21 | SW 21 | W 13 | W 11 | SW 19 | SW 18 | S 8 |
| kJ | 43 | 79 | 2 | 41 | 35 | — | 12 | 23 | 22 | 21 | 19 | 18 | 42 | 40 | 70 | 71 | 3 | 3 | 184 | 166 | 5 |
Wind waves Height (m) Direction Period (s) | — | SSW 8 | — | — | — | — | — | — | — | — | — | — | — | S 3 | S 4 | S 5 | S 8 | S 8 | — | — | S 6 |
| kJ | — | 257 | — | — | — | — | — | — | — | — | — | — | — | 2 | 7 | 11 | 63 | 58 | — | — | 33 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 2 | 0 | 2 | 2 | 0 | 2 | 2 | 0 | 2 | 2 | 0 | 29 | 2 | 29 | 2 | 2 | 2 | 2 | 2 | 2 |
Best forecast wave conditions in Lima | |||||||||||||||||||||
Best forecast wave conditions in Peru | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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