Surf Forecasts:
Trestles (Uppers) surf forecast from 8 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 11PM (local time) - 3.5ft (1.0m), 10s period, SSW 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★+): Tuesday 8 Sep, 11PM (local time) - 3.5ft (1.0m), 10s period with SSW 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 Tuesday (Sep 08) at 11PM. The primary swell is predicted to be 1.0m and 10s period with a secondary swell of 0.4m 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 (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+) | 11PM (Tue 8th Sep) | 3.5ft (1.0m) 10s |
| Best Surf | 11PM (Tue 8th Sep) | 3.5ft (1.0m) 10s |
| 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
Hey folks, Rusty here. Let’s talk about Trestles (Uppers).
Alright, we’ve got a bit of a mixed bag coming up over the next 16 days. The first real window of opportunity is a bit of a slow-burner, but there’s a couple of windows that could get the heart racing. The water is currently sitting at 73°F, which is a solid 5° warmer than usual for this time of year – that’s very unusual, so you can leave the thick wetsuit at home for a while.
The pattern starts off pretty average. The first few days, from Tuesday the 8th through to the weekend, we’re looking at small, choppy swells. The wind is mostly cross-onshore, which is a bit of a bummer, keeping things a bit messy. The swell is small, around 2ft to 3ft, with periods that are either short or a bit long, but the energy is moderate (between 418 and 656). It’s not a write-off, but it’s definitely not firing. The waves are there, but they’re work.
The real standout, the one that’s got me a little excited, is looking like Wednesday the 16th of September. That morning, we’ve got a clean 3ft swell from the SSW, with a long period of 18 seconds. That’s proper groundswell. The wind is light and offshore (SSW at 6 mph), which is a major positive. That combo is going to produce some clean, lined-up waves. The combined energy is moderate (524), but with that period and direction, the quality should be there. It’s a reef and point setup, so that long period stuff will wrap in nicely. The crowds are always a thing at Uppers, so expect a busy lineup, but for the quality on offer, it’s worth it.
The following week is a bit of a mixed bag again. We see the window on Friday the 18th of September morning with a 2ft swell from the SW, but again, a long period of 19 seconds and light offshore wind (WSW at 6 mph). That’s another one for the early crew. The energy is moderate (515), similar conditions. Then, on Monday the 21st of September, we get a pulse of 3ft from the SW with a 17-second period, and light winds. The energy is moderate (632). It’s a decent option, but not quite the standout of the 16th.
Overall, don’t expect much for the first week. The second week has a couple of promising days, but the 16th is the one to circle on your calendar. It’s the best of the lot.
Catch you out there.
Rusty
Short Range ForecastMostly dry. Warm (max 30°C on Tue afternoon, min 21°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Fri afternoon, min 19°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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) | SSW 13 | SSW 13 | SSW 10 | SW 16 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | W 8 | SW 19 | W 9 | W 8 | SW 18 | SW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 227 | 180 | 135 | 214 | 278 | 419 | 560 | 502 | 483 | 349 | 314 | 309 | 214 | 164 | 160 | 135 | 94 | 194 | 157 | 150 | 188 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-on | on | cross | cross-on | cross-on | cross |
High Tide | 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 | 11:11AM1.66m | 11:59PM1.17m | |||||||
Low Tide | 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 | 5:59PM0.22m | ||||||||
 |  |  | | |  | | | | | | | | | | | | | | | | |
 | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — |
 | — | 7:06 | — | — | 7:05 | — | — | 7:04 | — | — | 7:01 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 30 | 29 | 29 | 28 | 26 | 26 | 26 | 23 | 23 | 24 | 21 | 22 | 22 | 20 | 22 | 23 | 21 | 22 | 22 | 20 |
Feels °C | 30 | 28 | 29 | 30 | 29 | 28 | 27 | 26 | 24 | 23 | 24 | 22 | 22 | 22 | 22 | 22 | 24 | 23 | 21 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | SSW 10 | SSW 10 | SSW 10 | SW 16 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | W 6 | W 6 | W 7 | W 8 | W 8 | W 9 | W 8 | W 8 | W 7 |
| kJ | 227 | 180 | 132 | 214 | 278 | 419 | 560 | 502 | 483 | 349 | 314 | 309 | 36 | 37 | 55 | 135 | 93 | 194 | 157 | 94 | 93 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 13 | SSW 8 | SSW 12 | W 5 | W 6 | W 6 | W 6 | W 7 | W 6 | W 6 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 18 | SW 18 | SW 17 |
| kJ | 204 | 154 | 135 | 64 | 119 | 17 | 24 | 24 | 36 | 55 | 37 | 33 | 214 | 164 | 160 | 88 | 87 | 85 | 108 | 150 | 188 |
Swell 3 Height (m) Direction Period (s) | SW 18 | SW 18 | SW 16 | SSW 13 | SSW 8 | SSW 12 | S 12 | SSW 12 | SSW 11 | S 10 | SSW 10 | S 9 | WSW 14 | S 9 | S 8 | SW 19 | SW 19 | SW 19 | SW 13 | SW 12 | SW 12 |
| kJ | 80 | 81 | 130 | 133 | 37 | 82 | 72 | 46 | 23 | 19 | 21 | 15 | 40 | 14 | 13 | 58 | 94 | 129 | 43 | 40 | 38 |
Wind waves Height (m) Direction Period (s) | WNW 3 | WNW 4 | WNW 4 | WNW 5 | W 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 6 | 20 | 15 | 7 | 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 12 | 86 | 6 | 86 | 86 | 15 | 64 | 64 | 28 | 83 | 88 | 64 | 64 | 86 | 32 | 64 | 86 | 3 | 83 | 64 | 3 |
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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