Surf Forecasts:
Trestles (Lowers) surf forecast from 13 Aug 2026:
- Best quality surf: Thursday 13 Aug, 11PM (local time) - 3ft (0.9m), 16s period, SW swell with glassy winds.
- Most powerful swell: Saturday 15 Aug, 2AM (local time) - 4ft (1.2m), 17s period, SSW swell with 807 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 11PM (local time) - 3ft (0.9m), 16s 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 Thursday (Aug 13) at 11PM. The primary swell is predicted to be 0.9m and 16s period with a secondary swell of 0.4m and 11s. 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 1.2m 17s and forecast to arrive on Saturday (Aug 15) 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+) | 11PM (Thu 13th Aug) | 3ft (0.9m) 16s |
| Best Surf | 11PM (Thu 13th Aug) | 3ft (0.9m) 16s |
| Most Powerful | 2AM (Sat 15th Aug) | 4ft (1.2m) 17s |
Table - best surf conditions forecast for Trestles (Lowers) over the next 16 days.
The Lowdown
Right, let’s have a look at what’s on the table for the next couple of weeks, my friends…
First up, we’re looking at Trestles (Lowers). It’s a beach and reef set-up, exposed to the south-west swell, and it’s a spot that’s consistently working. The water temp? About average for the time of year, nothing unusual there.
Now, I’d be lying if I said this was a blockbuster period. The first few days are… well, they’re a struggle. Thursday 13th and Friday 14th we’ve got some small south-west swell rolling in, around 2ft to 3ft with a period of 16 to 18 seconds. That long period gives it some shape, but the wind is on it or cross-onshore. It’s not clean. The wave energy is moderate, but it’s just not happening. Those sessions are written off. Saturday 15th sees a tiny bump – up to 4ft – but with cross-onshore wind again, it’s messy and the quality is low. The whole weekend and into Monday 17th is a write-off, honestly. Very small and blown out. Combined energy drops into the three-digit numbers (around 366 to 717), which is just weak wave energy.
We’re going to hit a real slow stretch here. From Monday 17th onwards through until around Friday 21st, it’s all poor conditions and ankle-snappers. Swell height barely breaks 3ft and it’s mostly light onshore wind in the morning. The combined energy falls back into the low 200s to 300s. Not a single standout recommended.
After that, we get a slight flicker of hope around Sunday 23rd. There’s a bit of a long-period south-west swell coming through – 2ft with a period of 19 seconds. That’s a proper groundswell, and it’s long period, so it’ll be clean and peel nicely along this point. But it’s still tiny, and the wind is cross-onshore in the morning. The wave energy is moderate at 424, but the quality is still poor. Not a good call.
Monday 24th into Tuesday 25th sees a tiny, but not terrible, pulse: 2ft to 2ft south-west swell, 16 to 18 second period, and *finally* the wind goes onshore light. Those conditions are marginal but at least it’s clean. The swell energy is still low at around 306 to 430. For a dedicated surfer it’s rideable, but it’s not worth getting excited about. After that, we’re back to flat and poor conditions through to the end of the period.
Honestly, there’s not one true standout across this whole 16-day window. It’s a long, lean period with mostly small, poor-quality surf that’s either blown out or just too weak. If you’re desperate, you could paddle out on Tuesday 25th morning for a few long-period knee-high waves with clean conditions, but that’s the best of a bad bunch. Forecasts can change, and it’s not often this area stays so quiet for this long, but for now, the board stays in the car more than it hits the water.
Later days, Rusty.
Short Range ForecastMostly dry. Warm (max 22°C on Thu morning, min 19°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Mon afternoon, min 21°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 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) | SW 16 | SW 16 | SW 15 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 16 | SSW 15 |
Wave Graph | |||||||||||||||||||||
255 | 358 | 280 | 302 | 404 | 807 | 417 | 683 | 666 | 499 | 443 | 367 | 367 | 264 | 261 | 232 | 240 | 272 | 377 | 314 | 249 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | glassy | on | cross-on | glassy | cross-on | cross-on | cross | cross-on | cross-on | glassy | cross-on | cross-on | glassy | on | on | cross | cross-on | on | cross |
High Tide | 10:28AM1.47m | 10:06PM1.92m | 11:02AM1.53m | 10:48PM1.74m | 11:37AM1.55m | 11:31PM1.52m | 12:11PM1.55m | 00:18AM1.28m | 12:47PM1.51m | 1:15AM1.05m | 1:28PM1.45m | 2:46AM0.87m | 2:22PM1.40m | ||||||||
Low Tide | 4:04PM0.34m | 4:52AM-0.17m | 4:50PM0.32m | 5:23AM-0.01m | 5:38PM0.33m | 5:51AM0.17m | 6:30PM0.37m | 6:17AM0.37m | 7:30PM0.43m | 6:40AM0.56m | 8:50PM0.46m | 6:55AM0.73m | 10:43PM0.43m | ||||||||
6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | |
— | 7:37 | — | — | 7:37 | — | — | 7:36 | — | — | 7:35 | — | — | 7:34 | — | — | 7:32 | — | — | 7:31 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 22 | 20 | 22 | 22 | 20 | 22 | 21 | 20 | 23 | 24 | 21 | 24 | 25 | 23 | 25 | 25 | 23 | 26 | 25 | 22 |
Feels °C | 23 | 22 | 22 | 22 | 22 | 21 | 22 | 21 | 21 | 24 | 23 | 20 | 24 | 24 | 25 | 26 | 25 | 25 | 27 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 16 | SW 15 | SW 15 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | W 7 | W 8 | W 8 | SSW 15 | W 8 | SSW 16 | W 8 |
255 | 358 | 280 | 255 | 404 | 807 | 417 | 683 | 666 | 499 | 443 | 367 | 367 | 264 | 73 | 97 | 91 | 272 | 95 | 314 | 157 | |
Swell 2 Height (m) Direction Period (s) | S 11 | S 11 | SSW 20 | SSW 18 | SW 14 | SSW 12 | SW 14 | S 11 | W 5 | S 11 | S 10 | W 6 | W 6 | SSW 18 | SSW 14 | SSW 16 | SSW 16 | W 9 | SSW 16 | W 8 | SSW 15 |
62 | 61 | 149 | 302 | 214 | 78 | 191 | 21 | 13 | 20 | 8 | 30 | 37 | 63 | 261 | 232 | 240 | 76 | 377 | 74 | 249 | |
Swell 3 Height (m) Direction Period (s) | SW 12 | SSW 21 | SSW 10 | SSW 10 | SSW 11 | W 11 | S 11 | W 11 | S 11 | W 10 | W 10 | S 10 | S 10 | S 10 | S 10 | SSW 13 | SSW 13 | SW 19 | SW 20 | S 9 | SW 18 |
23 | 44 | 32 | 37 | 66 | 2 | 37 | 2 | 20 | 2 | 2 | 8 | 8 | 8 | 2 | 116 | 98 | 15 | 16 | 1 | 13 | |
Wind waves Height (m) Direction Period (s) | — | W 8 | — | — | — | — | W 5 | W 5 | — | W 5 | W 6 | — | — | W 6 | — | — | — | — | — | — | — |
— | 12 | — | — | — | — | 7 | 7 | — | 14 | 21 | — | — | 39 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 83 | 85 | 0 | 85 | 85 | 0 | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 85 | 0 | 85 | 85 | 64 | 83 | 89 |
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.











