Surf Forecasts:
Trestles (Uppers) surf forecast from 17 Aug 2026:
- Best quality surf: Monday 17 Aug, 8AM (local time) - 3ft (0.9m), 14s period, SSW swell with glassy winds.
- Most powerful swell: Tuesday 18 Aug, 8AM (local time) - 3ft (0.9m), 16s period, SSW swell with 402 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 8AM (local time) - 3ft (0.9m), 14s 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 Monday (Aug 17) at 8AM. The primary swell is predicted to be 0.9m 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 0.9m 16s and forecast to arrive on Tuesday (Aug 18) at 8AM. 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+) | 8AM (Mon 17th Aug) | 3ft (0.9m) 14s |
| Best Surf | 8AM (Mon 17th Aug) | 3ft (0.9m) 14s |
| Most Powerful | 8AM (Tue 18th Aug) | 3ft (0.9m) 16s |
Table - best surf conditions forecast for Trestles (Uppers) over the next 16 days.
The Lowdown
Hey folks, Rusty here. Looking at the next 16 days at Trestles (Uppers), we’ve got a slow start and a long wait for anything decent. For the first week and a half, the surf is tiny—0.6ft to 1ft from the SSW—and the wind is mostly cross-on or onshore, so expect rippled, choppy surface. The combined swell energy hangs around moderate (195 to 452), but the conditions just ain’t there for clean rides.
The one day that stands out is Wednesday, August 26. That morning you’ll see 0.6ft of SW swell, 16-second period, combined energy 332—and the wind goes glassy. That’s a beautiful setup at Uppers. The wave face will be clean, and the long period means solid shape despite the small size. Crowds are gonna be thick though—this spot is always packed.
Thursday morning, August 27, also offers glassy conditions: 0.6ft from the SW, 14-second period. Another early-bird special. Water temp is about average for this time of year.
Later on, around Saturday August 29 and Sunday August 30, the swell picks up to 1ft from the SSW, with combined energy shooting into the strong range (627 and 663 respectively). But the wind stays cross-on, so it’ll be bumpy. For experts only at that size with the chop.
So, for the first week, save your energy. The real window is that glassy Wednesday morning on the 26th—don’t sleep on it. After that, it’s hit or miss.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Wed afternoon, min 20°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sat morning, min 23°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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 14 | SSW 14 | SSW 14 | SSW 14 | SSW 16 | SSW 17 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SW 18 | SSW 14 | SSW 15 |
Wave Graph  | |||||||||||||||||||
 kJ | 367 | 330 | 264 | 261 | 232 | 243 | 272 | 377 | 314 | 246 | 236 | 236 | 173 | 139 | 137 | 98 | 90 | 165 | 222 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | glassy | on | cross-on | glassy | on | cross-on | glassy | on | on | glassy | on | cross-on | glassy | on | cross-on | glassy |
High Tide | 00:18AM1.28m | 12:47PM1.51m | 1:15AM1.05m | 1:28PM1.45m | 2:46AM0.87m | 2:22PM1.40m | 3:41PM1.37m | 8:16AM0.98m | 5:05PM1.40m | 8:13AM1.05m | 6:07PM1.49m | ||||||||
Low Tide | 6:17AM0.37m | 7:30PM0.43m | 6:40AM0.56m | 8:50PM0.46m | 6:55AM0.73m | 10:43PM0.43m | 00:16AM0.32m | 9:51AM0.97m | 1:08AM0.21m | 11:54AM0.93m | 1:45AM0.11m | ||||||||
 |  | | | | | | | | | | | | | |  | | | | |
 | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — |
 | — | — | 7:34 | — | — | 7:32 | — | — | 7:31 | — | — | 7:30 | — | — | 7:29 | — | — | 7:28 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 24 | 25 | 22 | 25 | 25 | 23 | 26 | 27 | 23 | 26 | 26 | 23 | 25 | 25 | 24 | 27 | 27 | 25 |
Feels °C | 22 | 24 | 25 | 23 | 25 | 25 | 25 | 27 | 27 | 25 | 27 | 27 | 25 | 26 | 25 | 26 | 27 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | W 6 | W 7 | W 7 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 14 | SSW 15 |
| kJ | 367 | 330 | 264 | 59 | 57 | 56 | 272 | 377 | 314 | 246 | 236 | 236 | 173 | 139 | 137 | 98 | 90 | 165 | 222 |
Swell 2 Height (m) Direction Period (s) | W 5 | W 6 | SSW 18 | SSW 14 | SSW 16 | SSW 17 | W 6 | W 7 | W 7 | W 5 | W 6 | W 6 | W 6 | SW 18 | W 6 | SW 17 | W 6 | W 10 | W 10 |
| kJ | 26 | 35 | 64 | 261 | 232 | 243 | 47 | 59 | 38 | 13 | 16 | 16 | 11 | 81 | 11 | 47 | 7 | 49 | 47 |
Swell 3 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | S 10 | SSW 13 | SSW 13 | S 9 | SW 20 | S 8 | SSW 18 | SW 19 | SW 19 | S 10 | W 6 | SW 17 | W 6 | SW 18 | SW 19 | SW 19 |
| kJ | 8 | 8 | 8 | 7 | 114 | 98 | 6 | 16 | 6 | 31 | 57 | 57 | 8 | 6 | 47 | 6 | 81 | 57 | 58 |
Wind waves Height (m) Direction Period (s) | — | — | W 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 6 | — |
| kJ | — | — | 44 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 12 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 86 | 86 | 86 | 0 | 86 | 86 | 0 | 24 | 86 | 0 | 86 | 151 | 0 | 88 | 86 | 0 | 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.
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