Surf Forecasts:
Trestles (Lowers) surf forecast from 8 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 2AM (local time) - 3ft (0.9m), 10s period, SSW swell with glassy winds.
- Most powerful swell: Tuesday 8 Sep, 2AM (local time) - 5ft (1.6m), 11s period, SSW swell with 626 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 2AM (local time) - 3ft (0.9m), 10s 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 Wednesday (Sep 09) at 2AM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.6m and 13s. Another secondary swell of 0.6m and 4s is also forecast. 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 1.6m 11s and forecast to arrive on Tuesday (Sep 08) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 9th Sep) | 3ft (0.9m) 10s |
| Best Surf | 2AM (Wed 9th Sep) | 3ft (0.9m) 10s |
| Most Powerful | 2AM (Tue 8th Sep) | 5ft (1.6m) 11s |
Table - best surf conditions forecast for Trestles (Lowers) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s cookin’ for the next couple of weeks.
Right off the bat, I gotta be straight with you – the surf report this week is a bit of a struggle. We’ve got a decent pulse of swell coming through, but the wind is a pain. The water is running at 73° with a temperature anomaly of 6°, which is way warmer than usual for the time of year. Strange, but it’s a nice problem to have.
The first real chance to wet a line comes Monday morning, September 7th, at Trestles (Lowers). There’s a 6ft SSW swell pushing in at a 13-second period, giving us a solid 1089 combined energy reading. But the wind is out of the WNW at 6 mph, putting a cross-on chop on the face. It’s surfable, but it’s messy. The wave energy is there, but the quality is a miss. The afternoon gets worse with a 16 mph cross-shore wind. Tuesday, September 8th, the swell drops to 4ft, and the wind is still cross-on. It’s a bit of a flat, choppy mess through the middle of the week for the most part.
The Standout:
If you’re looking for the best window across the whole 16-day forecast, you have to wait. The real standout is the late-afternoon session on Friday, September 18th. The swell is a modest 2ft from the SW, but the period is a massive 19 seconds. That’s proper groundswell. The energy is in the 490 range, but the magic is the wind. It’s glassy – a light NW breeze at 3 mph. At Trestles (Lowers), that’s the kind of late afternoon that can turn a small ripple into a long, clean wall. The direction is a touch off the optimum SW, but when it’s glassy, you don’t argue. It’s a long way out, so keep an eye on it, but that’s the one session that has my heart.
The following days, Saturday the 19th and Sunday the 20th, also see a slight uptick in energy with a 2ft to 3ft SW swell, still with a long 18-second period, and light winds. Sunday morning, September 20th, has a cross-on breeze, but Saturday afternoon and Sunday evening look promising for a glassy last light session.
Honestly, most of the first two weeks are a grind. The wind just won’t play nice most days, and the swell is small and choppy. But that Friday the 18th – that’s the date. Circle it.
Rusty.
Short Range ForecastMostly dry. Warm (max 30°C on Mon afternoon, min 24°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Thu afternoon, min 19°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Mon 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | ||||||||||||||
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 12 | SSW 11 | SSW 14 | SSW 10 | SSW 10 | SSW 16 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 19 |
Wave Graph  | ||||||||||||||||||||
 kJ | 820 | 626 | 246 | 194 | 145 | 173 | 278 | 419 | 547 | 502 | 483 | 471 | 365 | 309 | 214 | 164 | 160 | 147 | 85 | 179 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | glassy | cross | on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | on | cross |
High Tide | 6:54PM1.85m | 8:19AM1.38m | 7:43PM1.91m | 8:47AM1.49m | 8:28PM1.91m | 9:17AM1.59m | 9:10PM1.83m | 9:46AM1.66m | 9:50PM1.71m | 10:15AM1.70m | 10:31PM1.55m | 10:44AM1.70m | 11:13PM1.36m | |||||||
Low Tide | 2:04AM-0.19m | 1:43PM0.49m | 2:39AM-0.20m | 2:28PM0.34m | 3:11AM-0.15m | 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 | |||||||
 |  |  | | |  | |  | | | | | | | | | | | | | |
 | — | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — |
 | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 6:59 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 30 | 27 | 28 | 29 | 27 | 29 | 29 | 25 | 25 | 25 | 23 | 24 | 24 | 22 | 22 | 22 | 20 | 22 | 22 | 20 |
Feels °C | 30 | 26 | 28 | 27 | 28 | 28 | 28 | 26 | 26 | 25 | 24 | 24 | 24 | 23 | 21 | 22 | 21 | 22 | 22 | 21 |
Swell 1 Height (m) Direction Period (s) | SSW 12 | SSW 11 | SSW 10 | SSW 10 | SSW 10 | SSW 9 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | W 7 | W 7 | W 7 | W 8 | W 8 | W 8 |
| kJ | 820 | 626 | 246 | 194 | 145 | 67 | 278 | 419 | 547 | 502 | 483 | 471 | 365 | 309 | 74 | 72 | 79 | 94 | 57 | 109 |
Swell 2 Height (m) Direction Period (s) | SW 19 | W 4 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | S 12 | W 6 | W 6 | W 7 | W 7 | W 6 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 19 |
| kJ | 58 | 9 | 207 | 154 | 135 | 135 | 119 | 82 | 72 | 16 | 27 | 43 | 43 | 51 | 214 | 164 | 160 | 147 | 85 | 179 |
Swell 3 Height (m) Direction Period (s) | — | SW 18 | SW 18 | SW 18 | SW 16 | SSW 16 | SSW 8 | W 5 | W 6 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | S 10 | WSW 14 | WSW 13 | S 9 | SW 19 | W 11 | SW 13 |
| kJ | — | 51 | 81 | 112 | 130 | 173 | 45 | 11 | 15 | 46 | 23 | 22 | 22 | 16 | 41 | 35 | 13 | 59 | 35 | 85 |
Wind waves Height (m) Direction Period (s) | WNW 4 | WNW 4 | W 4 | W 4 | WNW 4 | W 4 | W 4 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 21 | 16 | 3 | 9 | 15 | 6 | 8 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 85 | 13 | 13 | 69 | 0 | 13 | 127 | 64 | 64 | 64 | 3 | 83 | 133 | 64 | 83 | 85 | 3 | 64 | 238 | 3 |
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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