Surf Forecasts:
Trestles (Uppers) surf forecast from 15 Aug 2026:
- Best quality surf: Saturday 15 Aug, 2AM (local time) - 4ft (1.2m), 17s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 15 Aug, 2AM (local time) - 4ft (1.2m), 17s period, SSW swell with 807 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 2AM (local time) - 4ft (1.2m), 17s 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 Saturday (Aug 15) at 2AM. The primary swell is predicted to be 1.2m and 17s period with a secondary swell of 0.5m and 12s. 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 1.2m 17s and forecast to arrive on Saturday (Aug 15) at 2AM. 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+) | 2AM (Sat 15th Aug) | 4ft (1.2m) 17s |
| Best Surf | 2AM (Sat 15th Aug) | 4ft (1.2m) 17s |
| Most Powerful | 2AM (Sat 15th Aug) | 4ft (1.2m) 17s |
Table - best surf conditions forecast for Trestles (Uppers) over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what we’ve got for Trestles (Uppers) over the next couple of weeks.
The water is a warm 75°, which is much warmer than normal for this time of year—a full 7° above average. That’s a real treat.
The first week is a bit of a grind, to be honest. We start off on Friday the 14th with some weak, long-period swell from the SSW. The waves are only around 3 ft, but that 18-second period is proper groundswell. It’ll have some push and shape, but the cross-onshore wind is messing it up with a gentle breeze, making it pretty choppy. The combined wave energy is weak (636). It’s really a marginal call at best. Saturday and Sunday are similar—small, with that same cross-onshore wind keeping things lumpy. The energy dips a bit on Sunday (534) and then drops further early next week.
From Monday the 17th through Thursday the 20th, it’s pretty flat and poor. The swell is tiny—2 ft to 3 ft—and the energy falls away to low numbers like 322. The wind does go light and onshore (or cross-on), but there’s just no power to work with. This stretch is a real dud for a paddle surfer. If you’re a kiter, the onshore wind and any small bump might look more interesting, but for us, it’s a no-go.
The pattern starts to shift late on Tuesday the 25th. That afternoon, a new swell from the S starts to fill in, jumping up to 5 ft with a moderate 16-second period. The wave energy ramps up to a strong 1087. The wind is light and onshore (WSW) at 6 mph. This is the first sign of life, but it’s still labeled marginal.
The standout window arrives on Wednesday the 26th. The S swell pushes up to 6 ft with a 13-second period, and the combined energy hits a very strong 1468. The wind is light and onshore, which will keep the surface clean and lined up. For a break like Uppers—a reef and point setup that handles a longer period—this is the pick of the entire forecast. This is expert territory at this size; it’ll be too much for beginners. The light wind should mean smooth, powerful lines.
Thursday the 27th holds solid, with 5 ft from the SSW and energy over 1000 (1018). Friday the 28th is still good, with 5 ft and energy at 1055. The wind stays light and favorable through these days.
By Saturday the 29th, the swell is beginning to fade back down to 4 ft, but the period has stretched back out to 18 seconds, giving it some nice push still. Energy is still decent at 937, with light wind again.
So, the long-range call for the 26th and 27th looks like the best you’re going to get—some proper, clean, mid-size waves at the end of the month. It’s a fair way out, so keep an eye on it, but the signs are promising.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Sun afternoon, min 20°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Wed afternoon, min 22°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Fri 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||
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 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | 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 |
Wave Graph | ||||||||||||||||||||
360 | 807 | 417 | 627 | 612 | 499 | 372 | 367 | 330 | 264 | 261 | 232 | 243 | 272 | 377 | 314 | 246 | 236 | 236 | 173 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross-on | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on | glassy | on | on | glassy | on | cross-on | glassy |
High Tide | 10:48PM1.74m | 11:37AM1.55m | 11:31PM1.52m | 12:11PM1.55m | 00:18AM1.28m | 12:47PM1.51m | 1:15AM1.05m | 1:28PM1.45m | 2:46AM0.87m | 2:22PM1.40m | 3:41PM1.37m | |||||||||
Low Tide | 4:50PM0.32m | 5:23AM-0.01m | 5:38PM0.33m | 5:51AM0.17m | 6:30PM0.37m | 6:17AM0.37m | 7:30PM0.43m | 6:40AM0.56m | 8:50PM0.46m | 6:55AM0.73m | 10:43PM0.43m | 00:16AM0.32m | ||||||||
— | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | |
7:37 | — | — | 7:36 | — | — | 7:35 | — | — | 7:34 | — | — | 7:32 | — | — | 7:31 | — | — | 7:30 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 20 | 22 | 22 | 20 | 23 | 24 | 22 | 24 | 25 | 23 | 25 | 26 | 23 | 26 | 27 | 23 | 27 | 27 | 24 |
Feels °C | 22 | 21 | 22 | 21 | 22 | 24 | 23 | 22 | 24 | 24 | 24 | 26 | 27 | 25 | 27 | 27 | 25 | 28 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | W 7 | W 8 | W 8 | SSW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 |
360 | 807 | 417 | 627 | 612 | 499 | 372 | 367 | 330 | 264 | 117 | 114 | 88 | 272 | 377 | 314 | 246 | 236 | 236 | 173 | |
Swell 2 Height (m) Direction Period (s) | SW 14 | S 12 | SW 14 | S 11 | W 5 | W 5 | S 10 | W 6 | W 6 | SSW 18 | SSW 14 | SSW 16 | SSW 17 | W 9 | W 7 | W 7 | W 6 | W 6 | W 6 | W 7 |
214 | 69 | 191 | 37 | 18 | 15 | 19 | 52 | 51 | 63 | 261 | 232 | 243 | 71 | 47 | 32 | 18 | 29 | 30 | 24 | |
Swell 3 Height (m) Direction Period (s) | S 11 | W 11 | S 11 | W 11 | S 11 | S 11 | W 10 | S 10 | S 10 | S 10 | S 10 | SSW 13 | SSW 13 | S 9 | SW 20 | S 8 | SSW 18 | SW 19 | WNW 13 | WNW 11 |
62 | 10 | 39 | 2 | 20 | 20 | 2 | 8 | 8 | 8 | 7 | 116 | 98 | 6 | 16 | 1 | 31 | 57 | 16 | 25 | |
Wind waves Height (m) Direction Period (s) | — | — | W 5 | W 5 | — | — | W 5 | — | — | W 7 | — | — | — | — | — | — | — | — | — | — |
— | — | 7 | 11 | — | — | 27 | — | — | 72 | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 86 | 0 | 86 | 86 | 12 | 86 | 86 | 26 | 69 | 86 | 9 | 86 | 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.











