Surf Forecasts:
Trestles (Lowers) surf forecast from 29 Aug 2026:
- Best quality surf: Thursday 3 Sep, 11PM (local time) - 4.5ft (1.3m), 14s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 29 Aug, 8PM (local time) - 4.5ft (1.3m), 16s period, SSW swell with 788 kJ wave energy.
- Next surfable swell (1★+): Sunday 30 Aug, 8PM (local time) - 3.5ft (1.0m), 14s period with SSW swell.
Best Forecast Surf Conditions for Trestles (Lowers) this week:
The surf forecast for Trestles (Lowers) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Aug 30) at 8PM. The primary swell is predicted to be 1.0m and 14s period with a secondary swell of 0.9m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Trestles (Lowers) in the next 16 days are 1.3m 16s and forecast to arrive on Saturday (Aug 29) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sun 30th Aug) | 3.5ft (1.0m) 14s |
| Best Surf | 11PM (Thu 3rd Sep) | 4.5ft (1.3m) 14s |
| Most Powerful | 8PM (Sat 29th Aug) | 4.5ft (1.3m) 16s |
Table - best surf conditions forecast for Trestles (Lowers) over the next 16 days.
The Lowdown
Right, grab a coffee and listen up. I’m Rusty, and I’ve just been staring at the charts for Trestles (Lowers). It’s a classic beach and reef set-up, exposed to the south-west swell, and it loves a good, long-period pulse. The water is currently 75° and sitting a massive 7° warmer than it should be for this time of year, so you definitely won’t be needing a steamer.
Alright, the honest truth for the next week or so is a bit of a grind. We’ve got a persistent run of messy, cross-onshore winds that are just going to chop things up. From Saturday the 29th right through most of the first week of September, it’s looking marginal at best. We’re talking knee to waist-high swell (around 3 to 4 ft) from the SSW, but that consistent wind from the W or WSW is going to keep the surface bumpy. The combined energy is moderate, sitting around that 500 to 700 mark, but it just won’t be clean. Sunday the 30th and Monday the 31st are particularly flat and messy—a real beach day, not a surf day. You’re better off checking the tides and waiting.
Now, hold on, because the second week starts to show some real promise. Monday the 7th of September we see a pickup, with the swell jumping to 5 ft from the S and period hitting a nice 14 seconds. The energy jumps up (878) but it’s still got that cross-on wind. That’s the warm-up.
The real standout—and I mean the one day you need to circle in your calendar—is Tuesday the 8th of September. We get a proper pulse of groundswell. The morning sees solid 8 ft from the SSW, jumping to a pumping 12 ft in the afternoon. The period is a quality 12 to 13 seconds, and the combined energy is strong, registering 1930 in the morning and a massive 3123 in the afternoon. Now, this is expert territory only; it’s too big for beginners. The catch is that the wind is still a cross-on from the W. It’ll be a bit bumpy, but the sheer power and size of that SSW swell on a super consistent break like Trestles will produce some serious, dredging barrels on the right banks. It’s going to be a zoo crowds-wise, that’s inevitable, but for the experienced surfer, that is the session of the forecast.
After that surge, it fades quickly. Wednesday the 9th drops back to 6 ft from the SSW, but the period crashes to a short 8 seconds, which is pretty junky. Then from the 10th through the 12th, it’s a return to the small stuff, with waist-high leftovers and poor, cross-onshore conditions. Not worth the hassle.
Then, just when you’re about to give up, look at Sunday the 13th of September. The morning offers a small, clean window. The swell is a modest 3 ft from the SSW (period around 12 seconds) but the wind goes glassy with a light N breeze. It’s a rare moment of pure, clean conditions. It’s not big, but for a longboard or a fish in the early morning light, with almost no wind, it’ll be a beautiful little session. The rain showers might put some people off, leaving it quieter.
So, the call: Tuesday the 8th of September is the big, powerful, expert-only day with a massive 12 ft SSW groundswell. For the everyday surfer wanting clean lines, the best bet is the glassy morning of Sunday the 13th of September. Everything else is a bit of a write-off.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Sat morning, min 21°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Wed afternoon, min 20°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | |||||||||||||||
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) | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | S 12 | SSW 13 | SSW 13 | S 11 | S 12 | SSW 12 | SSW 12 | SSW 13 | SSW 12 | SSW 16 | SSW 14 | SSW 17 | SSW 16 | SSW 16 |
Wave Graph | |||||||||||||||||||||
692 | 627 | 759 | 537 | 478 | 389 | 325 | 235 | 160 | 156 | 260 | 371 | 373 | 361 | 648 | 517 | 452 | 621 | 537 | 659 | 620 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | on | glassy | on | cross-on | glassy | cross-on | cross | cross | cross-on | cross-on | glassy | on | cross-on | cross-on | cross-on | on | on |
High Tide | 10:26AM1.52m | 10:18PM1.61m | 10:52AM1.58m | 10:57PM1.45m | 11:20AM1.62m | 11:42PM1.26m | 11:53AM1.63m | 00:41AM1.06m | 12:34PM1.62m | 2:20AM0.88m | 1:34PM1.57m | 5:35AM0.88m | 3:06PM1.55m | ||||||||
Low Tide | 4:23PM0.33m | 4:43AM0.13m | 5:04PM0.29m | 5:06AM0.26m | 5:52PM0.28m | 5:29AM0.41m | 6:51PM0.30m | 5:52AM0.58m | 8:11PM0.32m | 6:14AM0.73m | 9:57PM0.27m | 6:35AM0.88m | 11:34PM0.14m | ||||||||
6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | |
— | 7:19 | — | — | 7:17 | — | — | 7:16 | — | — | 7:15 | — | — | 7:14 | — | — | 7:13 | — | — | 7:12 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 25 | 26 | 25 | 22 | 24 | 24 | 22 | 25 | 25 | 24 | 25 | 26 | 23 | 24 | 24 | 21 | 23 | 23 | 21 |
Feels °C | 30 | 29 | 27 | 26 | 24 | 24 | 24 | 23 | 22 | 25 | 22 | 23 | 24 | 23 | 21 | 23 | 22 | 21 | 22 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | W 7 | SSW 14 | S 12 | S 11 | S 11 | S 11 | S 12 | SSW 12 | SSW 12 | SSW 13 | SSW 12 | SSW 12 | SSW 14 | SSW 12 | SSW 16 | SSW 16 |
692 | 627 | 759 | 537 | 478 | 99 | 325 | 235 | 160 | 149 | 260 | 371 | 373 | 361 | 648 | 517 | 412 | 621 | 403 | 659 | 620 | |
Swell 2 Height (m) Direction Period (s) | W 6 | W 6 | W 7 | W 8 | W 8 | SSW 14 | W 7 | SSW 13 | SSW 13 | SSW 13 | W 5 | WNW 5 | SW 16 | SW 16 | W 5 | W 6 | SSW 16 | SSW 18 | SSW 17 | SSW 12 | W 6 |
29 | 28 | 80 | 153 | 89 | 389 | 55 | 158 | 156 | 156 | 14 | 35 | 214 | 208 | 11 | 25 | 452 | 408 | 537 | 231 | 53 | |
Swell 3 Height (m) Direction Period (s) | SSW 8 | SW 12 | S 8 | SSE 13 | S 12 | SSE 12 | S 13 | SSW 19 | W 5 | W 5 | SW 18 | SW 18 | W 9 | SSW 12 | S 15 | SSW 19 | S 13 | W 5 | W 7 | W 6 | SW 11 |
21 | 37 | 10 | 33 | 44 | 46 | 163 | 35 | 14 | 9 | 80 | 111 | 2 | 119 | 17 | 145 | 14 | 21 | 42 | 28 | 117 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 6 | — | — | — | — | W 5 | W 3 | — | — | W 6 | — | — | W 6 | W 6 |
— | — | — | — | — | — | — | 25 | — | — | — | — | 7 | 4 | — | — | 25 | — | — | 52 | 88 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 85 | 85 | 15 | 85 | 85 | 0 | 85 | 85 | 0 | 85 | 85 | 13 | 85 | 85 | 0 | 85 | 130 | 1 | 85 | 1362 | 24 |
Best forecast wave conditions in Orange County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Trestles (Lowers) Surf forecast
The above surf forecast table for Trestles (Lowers) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Trestles (Lowers) can be found by selecting the local surf guide option on the grey menu. Our Trestles (Lowers) 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 (Trestles (Lowers)) 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 Trestles (Lowers) 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.
Trestles (Lowers) is 6 km (4 miles) from San Clemente. If you plan a vacation in Orange County, look for hotels and other accommodation in San Clemente. San Clemente has rooms for a wide range of budgets as well as car hire and transport links.











