
Surf Forecasts:
Trestles (Uppers) surf forecast from 10 Sep 2026:
- Best quality surf: Saturday 12 Sep, 8PM (local time) - 2ft (0.6m), 14s period, SW swell with glassy winds.
- Most powerful swell: Thursday 10 Sep, 11AM (local time) - 3.5ft (1.0m), 17s period, SW swell with 560 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 (Uppers) this week:
The surf forecast for Trestles (Uppers) 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 0.7m and 6s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Trestles (Uppers) in the next 16 days are 1.0m 17s and forecast to arrive on Thursday (Sep 10) at 11AM. 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 (Sat 12th Sep) | 2ft (0.6m) 14s |
| Best Surf | 8PM (Sat 12th Sep) | 2ft (0.6m) 14s |
| Most Powerful | 11AM (Thu 10th Sep) | 3.5ft (1.0m) 17s |
Table - best surf conditions forecast for Trestles (Uppers) over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’ve got the scoop on the local surf for the next couple of weeks. Let’s get into it.
Alright, mate, the outlook for Trestles (Uppers) is a bit of a mixed bag. We’ve got some solid long-period groundswell energy rolling in, but the winds and conditions are making things tricky for a good chunk of the forecast. The water is sitting at 71°, which is much warmer than usual for this time of year, so you won’t need a thick suit.
We start off on Wednesday the 9th of September with a bit of a dud. There’s a small 0.7m (2ft) SW groundswell with a long 16-second period, and the combined swell energy is moderate at 434, but it’s raining and the wind is a light cross-onshore. That’s not doing us any favours. The surf is marginal at best.
Thursday the 10th picks up a touch. The swell bumps to 1.0m (3ft) from the SW, with a very long 17-second period. The energy is moderate to strong at 656. But again, we’ve got a light cross-onshore breeze from the south, which keeps things a bit bumpy. Still, the long period means there’s some quality in the water if you can find a clean lineup.
From Friday the 11th right through to Monday the 14th, it’s a tough stretch. The swell hangs around 0.7m to 1.0m (2ft to 3ft), but the winds are cross-onshore from the SSE or S, making it choppy and messy. The wave energy drops off, and the conditions are just poor for a decent surf. It’s a real grind.
Then we hit a bit of a lull. From Tuesday the 15th of September through to the end of the first week, the swell drops to a tiny 0.4m to 0.5m (1ft to 2ft), with the period still long but the energy is weak. The wind is light and sometimes onshore, so it’s all very marginal. Not worth paddling out for.
Now, here’s where it gets interesting. We’ve got a standout window coming up. On the morning of Friday the 18th of September, we see a bump in energy. The swell is 0.6m (2ft) from the SW with a very long 19-second period, and the combined energy jumps to a solid 510. The wind is light and cross-onshore, so it’s not perfect, but the long period and moderate energy mean the sets will have some push. This is the best we’ve seen in a while. The swell direction is straight out of the SW, which is bang on for the optimum direction for Trestles. This is a reef and point break, and that long-period groundswell will wrap in beautifully. It’s a promising window.
Saturday the 19th of September is also looking okay. The swell holds at 0.8m (3ft) from the SW with a very long 18-second period, and the energy is strong at 540. The wind is light cross-onshore again, so it’s still a bit bumpy, but the energy is there.
The real highlight, though, is shaping up for Sunday the 20th of September. The swell is 0.9m (3ft) from the SW, period at 18 seconds, and the combined energy hits a strong 646. The wind is light and cross-onshore, but the wave quality is marginal – still, that’s the best forecast we have. The energy stays strong into Monday the 21st, with 0.9m to 1.0m (3ft to 3ft) swell and energy in the 575 to 625 range. This is the peak of the run.
After that, from Tuesday the 22nd through Thursday the 24th, the energy fades. The swell drops to 0.7m to 0.9m (2ft to 3ft), the period shortens, and the winds remain cross-onshore. Conditions go back to poor.
The final day, Thursday the 24th of September afternoon, is a real tease. We get a 0.7m (2ft) SW swell with a 14-second period and low energy at 223, but the wind goes glassy. The report says “expect good surf conditions,” so if you’re desperate for a clean, small wave session, that’s your chance. But overall, the best bet for a proper surf is that run from Friday the 18th through Monday the 21st. The long-period SW groundswell will be wrapping into the point, and if you can handle a bit of cross-onshore bump, there will be waves.
For a spot like Trestles, which is very consistent and exposed to the west, this kind of long-period SW groundswell is what it was built for. Crowds are always a factor here, so be ready for a lineup, especially when the energy is good.
Stay patient, pick your days, and I’ll see you out there.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Wed afternoon. Warm (max 32°C on Wed afternoon, min 20°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Sat afternoon, min 19°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
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 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | W 7 | SW 19 | SW 19 | SW 18 | SW 18 | SW 17 | SW 16 | SSW 20 | SSW 18 |
Wave Graph | ||||||||||||||||||||
278 | 419 | 560 | 502 | 483 | 349 | 314 | 309 | 214 | 164 | 160 | 103 | 94 | 127 | 108 | 150 | 147 | 127 | 127 | 113 | |
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 | cross-on | cross-on | cross-on | on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | on | glassy |
High Tide | 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 | 11:11AM1.66m | 11:59PM1.17m | 11:38AM1.58m | 00:58AM0.99m | |||||||
Low Tide | 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 | 5:59PM0.22m | 5:16AM0.57m | 6:51PM0.30m | |||||||
— | — | 6:30 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:33 | — | — | |
7:05 | — | — | 7:04 | — | — | 7:01 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | |
mm | 1 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 32 | 27 | 26 | 26 | 23 | 24 | 24 | 22 | 22 | 23 | 20 | 22 | 23 | 20 | 22 | 22 | 20 | 22 | 22 | 20 |
Feels °C | 32 | 30 | 27 | 27 | 24 | 24 | 24 | 24 | 22 | 23 | 22 | 22 | 23 | 21 | 22 | 21 | 21 | 23 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | W 6 | W 6 | W 6 | W 7 | W 8 | W 8 | W 7 | W 7 | SW 17 | SW 16 | SW 16 | SW 16 |
278 | 419 | 560 | 502 | 483 | 349 | 314 | 309 | 32 | 31 | 67 | 103 | 92 | 89 | 60 | 34 | 147 | 127 | 122 | 88 | |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSW 12 | W 6 | W 6 | W 7 | W 7 | W 6 | W 6 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 18 | SW 18 | W 6 | W 9 | W 8 | W 8 |
119 | 82 | 24 | 17 | 21 | 42 | 37 | 33 | 214 | 164 | 160 | 88 | 87 | 85 | 108 | 150 | 18 | 39 | 22 | 20 | |
Swell 3 Height (m) Direction Period (s) | SSW 8 | W 4 | S 12 | SSW 12 | SSW 11 | S 10 | SSW 11 | S 9 | S 10 | S 10 | S 9 | S 8 | SW 19 | SW 19 | SSW 13 | SW 12 | SW 12 | SW 12 | SSW 20 | SSW 18 |
37 | 9 | 72 | 46 | 39 | 19 | 22 | 15 | 31 | 30 | 24 | 12 | 94 | 127 | 67 | 39 | 38 | 37 | 127 | 113 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | S 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 12 | 3 | 64 | 64 | 3 | 83 | 151 | 86 | 86 | 86 | 32 | 64 | 135 | 3 | 88 | 83 | 3 | 83 | 86 | 0 |
Best forecast wave conditions in Orange County | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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Information about the Trestles (Uppers) Surf forecast
The above surf forecast table for Trestles (Uppers) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Trestles (Uppers) can be found by selecting the local surf guide option on the grey menu. Our Trestles (Uppers) 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 (Uppers)) 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 (Uppers) 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 (Uppers) 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.










