Surf Forecasts:
Trestles (Uppers) surf forecast from 12 Sep 2026:
- Best quality surf: Thursday 17 Sep, 5AM (local time) - 2.5ft (0.8m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Wednesday 16 Sep, 8AM (local time) - 2.5ft (0.8m), 17s period, SSW swell with 386 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 0.8m 17s and forecast to arrive on Wednesday (Sep 16) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 11s period and expected on Wednesday (Sep 16) at 8PM.
| 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) | 2.5ft (0.8m) 16s |
| Most Powerful | 8AM (Wed 16th Sep) | 2.5ft (0.8m) 17s |
Table - best surf conditions forecast for Trestles (Uppers) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s break down what’s happening at Trestles (Uppers) for the next couple weeks.
To be straight with you, it starts off pretty dead. From Friday the 11th (that’s today) through about Wednesday the 16th, there’s barely a pulse. The combined swell energy is stuck below 400, and with cross-onshore winds from the SSE and S, it’s mostly choppy and weak. A couple afternoons get onshore wind with waves around 2ft, but it’s barely a ripple. Water temp’s 69°, which is normal for this time of year, so at least the water’s not shockin’ ya.
We get a small tease on Thursday the 17th morning – a light cross-onshore breeze from the W, and a 3ft SSW groundswell with a 16-second period. The energy’s creeping up to 334. Still marginal, but it’s the first sign of life.
The real deal shows up on the weekend of the 19th and 20th of September. Saturday the 19th morning: a 3ft SW swell with an 18-second period – that’s proper groundswell. With a light onshore wind from the WSW, it’ll be glassy clean. The energy jumps to 535. Then Sunday the 20th morning is the pick: same 3ft SW swell, 18-second period, and the energy hits 614. The wind stays light onshore from the SW. This is the best window. Trestles (Uppers) is a reef and point break, and that long-period SW swell will wrap in nice and give you long, drifty walls. Crowds? Expect ’em – it’s always packed here.
If you’re new to it, those waves are under 5ft, so you’ll be fine. For the more experienced, the long period means the sets have push, but at a point break it’ll stand up clean.
Monday the 21st still has some juice – the energy climbs to 877 with a 3ft SW swell and 17-second period. The morning breeze from the S puts a bit of texture on it, but it’s still worth paddling out.
After that, it slowly fades. From Tuesday the 22nd onward, you’re looking at the same 3ft SW swell but the period drops to 15 seconds and the wind goes cross or cross-on. Rideable, but nothin’ to write home about.
Bottom line: if you want the best surf, mark your calendar for Saturday the 19th and Sunday the 20th. Small, clean, lined-up waves with that long-period power. Just expect a crowd.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Fri morning, min 21°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Mon morning, min 19°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
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 15 | SW 15 | SW 14 | SW 14 | SW 14 | W 7 | SW 13 | W 10 | W 8 | SW 18 | SW 17 | SW 16 | SSW 20 | SW 16 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 349 | 360 | 309 | 214 | 164 | 160 | 124 | 88 | 220 | 142 | 192 | 147 | 127 | 127 | 88 | 386 | 240 | 291 | 284 | 246 | 242 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | on | cross-on | cross-on | on | cross | cross-on | on | cross-on | cross-on | on | glassy | on | cross-on | glassy | cross-on | cross-on | glassy |
High Tide | 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 | 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 | ||||||||
 | |  | | | | | | | | | | | | | | | | | | | |
 | 6:30 | — | — | 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 | 25 | 23 | 24 | 24 | 22 | 24 | 24 | 22 | 23 | 23 | 21 | 22 | 22 | 20 | 22 | 22 | 20 | 23 | 23 | 21 |
Feels °C | 26 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 22 | 23 | 23 | 22 | 22 | 22 | 23 | 22 | 22 | 23 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 15 | W 6 | W 6 | W 6 | W 7 | W 7 | W 10 | W 8 | W 10 | W 9 | W 9 | W 9 | W 8 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 |
| kJ | 349 | 360 | 309 | 48 | 33 | 63 | 124 | 88 | 220 | 142 | 146 | 78 | 74 | 56 | 32 | 386 | 240 | 291 | 284 | 246 | 242 |
Swell 2 Height (m) Direction Period (s) | W 6 | W 6 | W 6 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SSW 13 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | W 6 | W 6 | SSW 11 | S 10 | S 12 | S 11 |
| kJ | 37 | 25 | 25 | 214 | 164 | 160 | 88 | 87 | 68 | 108 | 192 | 147 | 127 | 122 | 88 | 17 | 9 | 130 | 49 | 72 | 81 |
Swell 3 Height (m) Direction Period (s) | S 10 | SSW 6 | S 9 | S 9 | S 10 | S 9 | S 8 | SW 19 | SW 19 | SW 13 | SW 12 | SW 12 | SW 12 | SSW 20 | SSE 9 | SSE 9 | SSE 9 | SW 20 | SSW 12 | S 9 | SW 21 |
| kJ | 19 | 8 | 15 | 28 | 28 | 23 | 12 | 58 | 127 | 43 | 39 | 38 | 37 | 127 | 28 | 26 | 15 | 61 | 50 | 43 | 154 |
Wind waves Height (m) Direction Period (s) | S 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WNW 3 | W 4 |
| kJ | 14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 9 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 83 | 88 | 64 | 83 | 86 | 27 | 64 | 86 | 3 | 64 | 86 | 64 | 83 | 86 | 0 | 86 | 86 | 0 | 86 | 86 | 0 |
Best forecast wave conditions in Orange County | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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.
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