Surf Forecasts:
Trestles (Lowers) surf forecast from 12 Sep 2026:
- Best quality surf: Thursday 17 Sep, 5AM (local time) - 3ft (0.9m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Thursday 17 Sep, 2AM (local time) - 3ft (0.9m), 16s period, SSW swell with 402 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 0.5m 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 0.9m 16s and forecast to arrive on Thursday (Sep 17) at 2AM. 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) | 3ft (0.9m) 16s |
| Most Powerful | 2AM (Thu 17th Sep) | 3ft (0.9m) 16s |
Table - best surf conditions forecast for Trestles (Lowers) over the next 16 days.
The Lowdown
Alright, this is Rusty here, and I’ll be honest with you – it’s a quiet spell coming up for our stretch of coast. Looking at Trestles (Lowers), the swell is just limping along. We’ve got a string of days where the ocean’s not giving us much to work with.
Right out of the gate, starting from the 11th, it’s pretty sad. The water temp here is sitting at 69°, which is about average for this time of year, so at least you won't freeze while you're sitting there waiting for a set that barely comes. The combined swell energy is weak, just 396 (moderate energy). For the first several days, through the 12th, 13th, and well into the week, the swell is tiny – around 1 ft to 2 ft – and the wind is a light cross-onshore, which just messes up any chance of a clean face. It’s poor surf, pure and simple.
We hit a bit of a lull in the quality. The combined energy picks up a bit on the 16th (Wednesday) to 414, and again to 528 on the 17th (Thursday), but the swell is still small, under 3 ft, and the wind keeps switching around from the south and then the west, staying cross-onshore. It’s just marginal, with questionable tide conditions. Nothing to get excited about.
Honestly, the best chance to get a half-decent wave falls on the 20th of September (Sunday) into the 21st (Monday). The swell bumps up to 3 ft from the SW, with a period hanging around 17-18 seconds. That’s a long-period swell, which should offer some good shape at a reef like Lowers, but with that extra period, the sets will be a bit spaced out. The morning of the 20th looks the pick, with a light onshore from the SW at just 3 mph – almost glassy. The combined energy climbs to 598, which is solidly moderate, and that’s about as good as this window gets.
After that, the 22nd and 23rd see the swell hold at 3 ft, but the energy starts to fade and the cross-onshore wind comes back, keeping things choppy and poor. By the 24th and into the 26th, it’s back down to the same tired story – small swell, weak energy (down to 255 by the 25th), and no decent wind. There isn’t a true standout session in this whole 16-day block. It’s a long gap of nothing, with just the 20th morning offering a slight glimmer. For a break that’s very consistent, it’s a frustrating run.
- Rusty
Short Range ForecastMostly dry. Warm (max 25°C on Fri afternoon, min 21°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Mon afternoon, min 19°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Fri 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | ||||||||||||||
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 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 | SSW 16 | SSW 15 | SSW 15 |
Wave Graph  | ||||||||||||||||||||
 kJ | 360 | 309 | 211 | 164 | 160 | 89 | 130 | 159 | 108 | 150 | 190 | 161 | 127 | 113 | 386 | 347 | 402 | 314 | 275 | 242 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-on | on | cross-on | cross-on | on | cross | cross-on | cross-on | cross | cross-on | on | glassy | on | cross-on | glassy | cross-on | cross-on | cross |
High Tide | 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 | 12:46PM1.38m | ||||||||
Low Tide | 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 | 5:12AM0.84m | 9:44PM0.41m | |||||||
 |  | | | | | | | | | | | | | | | | | | | |
 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — |
 | 7:01 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | — | 6:54 | — | — | 6:53 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 23 | 24 | 24 | 22 | 24 | 24 | 22 | 23 | 23 | 21 | 22 | 22 | 20 | 22 | 22 | 20 | 22 | 23 | 21 |
Feels °C | 26 | 25 | 25 | 25 | 25 | 24 | 25 | 24 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 22 | 22 | 22 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 14 | SW 14 | W 6 | W 7 | W 7 | W 10 | W 8 | W 7 | W 7 | W 9 | W 9 | SW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | S 12 |
| kJ | 360 | 309 | 211 | 164 | 35 | 80 | 58 | 159 | 92 | 52 | 22 | 57 | 58 | 88 | 386 | 347 | 402 | 314 | 275 | 130 |
Swell 2 Height (m) Direction Period (s) | 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 | W 8 | W 6 | W 6 | S 11 | S 10 | SSW 11 | SSW 15 |
| kJ | 16 | 17 | 25 | 24 | 160 | 89 | 87 | 85 | 108 | 150 | 190 | 161 | 122 | 21 | 12 | 9 | 58 | 48 | 88 | 242 |
Swell 3 Height (m) Direction Period (s) | SSW 10 | S 10 | S 10 | S 10 | S 9 | SW 19 | SW 19 | SW 19 | SW 13 | SW 13 | SW 12 | SW 12 | SSW 20 | SSW 18 | S 10 | S 10 | S 12 | S 12 | SW 21 | W 4 |
| kJ | 20 | 16 | 29 | 29 | 14 | 58 | 130 | 129 | 44 | 40 | 38 | 37 | 127 | 113 | 16 | 16 | 27 | 47 | 162 | 10 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 3 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 133 | 16 | 83 | 85 | 27 | 64 | 85 | 3 | 65 | 89 | 3 | 83 | 89 | 0 | 85 | 85 | 0 | 85 | 85 | 13 |
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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