Surf Forecasts:
Trestles (Lowers) surf forecast from 11 Sep 2026:
- Best quality surf: Thursday 17 Sep, 5AM (local time) - 3.5ft (1.0m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Thursday 17 Sep, 5AM (local time) - 3.5ft (1.0m), 16s period, SSW swell with 487 kJ wave energy.
- Next surfable swell (1★+): Saturday 12 Sep, 8PM (local time) - 2ft (0.6m), 14s period with SW 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 Saturday (Sep 12) at 8PM. The primary swell is predicted to be 0.6m and 14s period with a secondary swell of 0.6m and 6s. 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 1.0m 16s and forecast to arrive on Thursday (Sep 17) at 5AM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 12th Sep) | 2ft (0.6m) 14s |
| Best Surf | 5AM (Thu 17th Sep) | 3.5ft (1.0m) 16s |
| Most Powerful | 5AM (Thu 17th Sep) | 3.5ft (1.0m) 16s |
Table - best surf conditions forecast for Trestles (Lowers) over the next 16 days.
The Lowdown
Alright, let’s break it down in feet and miles per hour. It’s Rusty here, and I’m looking at the next couple of weeks at Trestles. The overall pattern is a slow start with some pretty average conditions, but there’s a pulse of better energy coming in the second week that could be worth waiting for.
Right now, for the first few days, it’s a tough call. The water temp at Trestles is sitting at 70° – about a touch warmer than normal for this time of year, which is nice. But the surf? Not much to write home about. Through Thursday 10th and into the weekend, we’ve got some knee-to-waist high swell around, but the wind is mostly cross-on from the south or southeast, leaving the surface choppy and messy. The combined wave energy is moderate (558 down to 225), but the quality just isn’t there for a good paddle session.
Monday 14th through Tuesday 15th stays pretty flat and weak, with light winds but still a cross-on component. It’s not completely dead, but it’s marginal at best. For anyone hoping for a classic Trestles session, you’ll be waiting.
Now, I’m starting to get a little excited from late in the second week. Around Wednesday 23rd into Thursday 24th, the swell starts to build again out of the SW, with heights around 3 ft and a period of 16 seconds – that’s a proper long-period groundswell. The combined energy jumps into the strong range (over 500 to over 700), and that’s the best we’ve seen in the whole outlook. The caveat is that Trestles is a river mouth setup, and a long period groundswell like this can sometimes straighten out here, but with the right tide it should offer some punchy, well-shaped lines.
The standout window looks like it could be Sunday 21st and Monday 22nd. The swell is consistent at 3 ft to 4 ft from the SW, 17 to 16 seconds, with light winds. Some sessions have offshore or clean conditions. The energy is strong (648 to 729), and while it’s not huge, the quality should be head-high and clean if the wind plays ball. Crowds? Absolutely – Trestles is always packed, but for good reason.
If you’re an advanced surfer and you can pick your tides, that Sunday and Monday in the second week is the one to aim for. The earlier part of the week is a write-off for quality surfing.
Stay patient, keep an eye on the wind, and I’ll catch you in the lineup.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Thu afternoon, min 21°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Sun afternoon, min 19°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Thu 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | ||||||||||||||
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 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 19 | W 10 | SW 18 | SW 18 | SW 17 | SW 16 | SSW 20 | SSW 18 | SSW 17 | SSW 16 | SSW 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 502 | 483 | 471 | 360 | 309 | 211 | 164 | 160 | 147 | 130 | 156 | 108 | 150 | 190 | 161 | 127 | 114 | 386 | 347 | 366 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | cross-on | cross | cross-on | on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | on | cross | on | on | glassy |
High Tide | 9:10PM1.83m | 9:46AM1.66m | 9:50PM1.71m | 10:15AM1.70m | 10:31PM1.55m | 10:44AM1.70m | 11:13PM1.36m | 11:11AM1.66m | 11:59PM1.17m | 11:38AM1.58m | 00:58AM0.99m | 12:07PM1.48m | 2:45AM0.87m | |||||||
Low Tide | 3:10PM0.23m | 3:40AM-0.05m | 3:52PM0.16m | 4:08AM0.08m | 4:33PM0.14m | 4:33AM0.24m | 5:15PM0.16m | 4:56AM0.41m | 5:59PM0.22m | 5:16AM0.57m | 6:51PM0.30m | 5:28AM0.72m | 8:00PM0.38m | |||||||
 |  | | | | | | | | | | | | | | | | | | | |
 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — |
 | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:54 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 25 | 24 | 25 | 23 | 24 | 24 | 21 | 23 | 23 | 21 | 22 | 22 | 20 | 22 | 22 | 20 | 21 | 22 | 19 |
Feels °C | 28 | 26 | 24 | 25 | 25 | 25 | 25 | 24 | 23 | 23 | 23 | 21 | 21 | 21 | 22 | 21 | 21 | 21 | 22 | 20 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | W 6 | W 7 | W 7 | W 10 | W 8 | W 7 | W 9 | W 9 | W 9 | W 7 | SSW 17 | SSW 16 | SSW 16 |
| kJ | 502 | 483 | 471 | 360 | 309 | 211 | 164 | 51 | 107 | 61 | 156 | 89 | 54 | 79 | 55 | 53 | 23 | 386 | 347 | 366 |
Swell 2 Height (m) Direction Period (s) | W 6 | W 6 | W 7 | W 6 | W 6 | W 6 | W 6 | SW 14 | SW 14 | SW 13 | SW 13 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | W 6 | W 6 | SW 13 |
| kJ | 10 | 15 | 42 | 28 | 24 | 33 | 32 | 160 | 147 | 87 | 85 | 108 | 150 | 190 | 161 | 122 | 88 | 11 | 10 | 82 |
Swell 3 Height (m) Direction Period (s) | SSW 12 | SSW 11 | SSW 11 | SSW 10 | S 10 | WSW 15 | S 10 | S 9 | S 8 | SW 19 | SW 19 | SW 13 | SW 13 | SW 12 | SW 12 | SSW 20 | SSW 18 | S 14 | S 9 | SSW 9 |
| kJ | 46 | 39 | 22 | 20 | 16 | 42 | 29 | 14 | 13 | 130 | 129 | 43 | 40 | 38 | 37 | 127 | 114 | 32 | 14 | 17 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 64 | 64 | 83 | 64 | 25 | 85 | 85 | 3 | 83 | 85 | 3 | 83 | 89 | 15 | 83 | 85 | 3 | 85 | 85 | 0 |
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.
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