
Surf Forecasts:
Trestles (Lowers) surf forecast from 20 Jul 2026:
- Best quality surf: Saturday 25 Jul, 5AM (local time) - 3.5ft (1.0m), 21s period, SW swell with glassy winds.
- Most powerful swell: Sunday 26 Jul, 5AM (local time) - 4ft (1.2m), 19s period, SW swell with 1,100 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 11PM (local time) - 5ft (1.5m), 12s period with SSW swell.
Best Forecast Surf Conditions for Trestles (Lowers) this week:
The surf forecast for Trestles (Lowers) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Jul 19) at 11PM. The primary swell is predicted to be 1.5m and 12s period with a secondary swell of 0.3m and 5s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Trestles (Lowers) in the next 16 days are 1.2m 19s and forecast to arrive on Sunday (Jul 26) at 5AM. 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 (Sun 19th Jul) | 5ft (1.5m) 12s |
| Best Surf | 5AM (Sat 25th Jul) | 3.5ft (1.0m) 21s |
| Most Powerful | 5AM (Sun 26th Jul) | 4ft (1.2m) 19s |
Table - best surf conditions forecast for Trestles (Lowers) over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming up for Trestles (Lowers).
Okay, so the first week or so is a bit of a mixed bag. We’ve got a real persistent run of small, clean swells, but the forecast keeps calling it “marginal.” That’s a nice way of saying it’s going to be small and a little inconsistent. The standout for the whole period is actually right at the end, and it’s a bit of a long-range promise, so keep your fingers crossed.
The real highlight looks like it’s gonna be Saturday, August 1st. That morning we’re looking at a solid 6 ft swell from the SSW, with a period of 13 seconds. That’s a proper groundswell with some punch. The combined energy is strong at 1106, so you’ll feel it. The wind is light and cross-on from the SSW, which is okay for Lowers, but what’s really nice is the afternoon glass-off. The wind goes straight onshore, but it’s only 6 mph. That’s basically clean. This is the best on offer, no doubt. The water is sitting at a warm 71°, which is 4° warmer than usual for this time of year. That’s notably warm, so you can leave the thick rubber at home. It’s a very consistent break, so you’ll get waves, but it’s always crowded, so expect a full lineup.
Before that, let’s walk through it. Sunday, July 19th through to Thursday, July 30th is all pretty similar. The swell hangs around the 3 ft to 4 ft range, mostly from the SSW or SW. The wind is mostly light, with a lot of “unknown” states, but when it’s glassy or light onshore, it’ll be clean. The energy is moderate, mostly between 477 and 903. There’s a weird spike on Friday, July 24th morning – a 2 ft swell but with a period of 24 seconds. That’s a very long, drawn-out groundswell. The energy is 1132, which is strong, but that period is so long it’ll likely break a bit straight on the beach break sections. Not ideal for Lowers’ usual form. The wind is decent though, light cross-on.
From Thursday, July 31st into Friday, August 1st, the swell starts to build. July 31st sees the swell hitting 5 ft from the S with a period of 14 seconds, and the energy is strong at 1004. The wind is light and onshore, so it’ll be clean. That’s a good warm-up for the main event.
Then after that Saturday peak, it drops off fast. Sunday, August 2nd and Monday, August 3rd are poor. The swell crashes down to 2 ft on Monday, the energy plummets to 148, and the forecast calls it poor conditions. Don’t bother.
So, if you’re planning a session, hold out for Saturday, August 1st. That’s the one. Everything else is just small, clean fun for a log or a mid-length. The long-range promise on the 1st is the real deal, but it’s a week and a half out, so don’t bet the house on it yet.
Catch you in the water,
Rusty
Short Range ForecastMostly dry. Warm (max 24°C on Mon morning, min 21°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Thu morning, min 22°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sun 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||
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 17 | SSW 12 | SSW 15 | SW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | S 13 | S 13 | SW 24 | SSW 13 | SW 21 | SW 21 | SW 21 | SW 19 |
Wave Graph | ||||||||||||||||||||
424 | 488 | 398 | 367 | 334 | 715 | 559 | 559 | 437 | 394 | 316 | 471 | 582 | 475 | 563 | 499 | 548 | 664 | 640 | 863 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | on | cross-on | glassy | cross-on | on | cross-on | on | cross-on | glassy | on | cross-on | cross | cross-on | on | cross-on | on | on | glassy |
High Tide | 1:45AM1.14m | 2:48PM1.44m | 3:09AM0.93m | 3:42PM1.45m | 5:11AM0.84m | 4:40PM1.47m | 7:14AM0.88m | 5:36PM1.51m | 8:16AM0.96m | 6:26PM1.57m | 8:48AM1.02m | 7:09PM1.64m | ||||||||
Low Tide | 8:13PM0.55m | 7:54AM0.37m | 9:43PM0.52m | 8:31AM0.55m | 11:24PM0.42m | 9:18AM0.71m | 00:41AM0.28m | 10:30AM0.81m | 1:32AM0.15m | 11:48AM0.85m | 2:10AM0.05m | 12:47PM0.83m | 2:43AM-0.03m | |||||||
— | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | |
7:58 | — | — | 7:58 | — | — | 7:57 | — | — | 7:57 | — | — | 7:55 | — | — | 7:55 | — | — | 7:54 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 21 | 24 | 24 | 22 | 23 | 23 | 22 | 24 | 25 | 22 | 26 | 26 | 24 | 25 | 25 | 23 | 25 | 26 | 23 |
Feels °C | 23 | 22 | 24 | 23 | 23 | 23 | 22 | 24 | 25 | 25 | 23 | 27 | 26 | 26 | 26 | 26 | 25 | 26 | 27 | 25 |
Swell 1 Height (m) Direction Period (s) | S 12 | SSW 12 | S 11 | S 11 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | S 13 | S 13 | S 12 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SW 19 |
336 | 488 | 235 | 188 | 334 | 715 | 559 | 559 | 437 | 394 | 316 | 471 | 582 | 475 | 513 | 499 | 484 | 380 | 328 | 863 | |
Swell 2 Height (m) Direction Period (s) | SW 17 | W 5 | SSW 15 | SW 16 | S 10 | W 5 | S 9 | S 8 | W 6 | S 14 | W 6 | W 7 | SW 26 | W 6 | W 7 | W 6 | SW 21 | SW 21 | SW 21 | SSW 12 |
424 | 4 | 398 | 367 | 125 | 5 | 57 | 34 | 25 | 101 | 47 | 43 | 171 | 67 | 56 | 36 | 548 | 664 | 640 | 269 | |
Swell 3 Height (m) Direction Period (s) | WNW 15 | WNW 15 | W 5 | SSW 13 | SW 13 | S 14 | W 5 | W 5 | SW 8 | SW 8 | S 12 | S 12 | SW 18 | SW 26 | SW 24 | SSW 24 | W 6 | W 7 | W 6 | W 6 |
42 | 21 | 4 | 35 | 175 | 16 | 5 | 7 | 15 | 14 | 146 | 139 | 49 | 105 | 563 | 368 | 32 | 43 | 28 | 18 | |
Wind waves Height (m) Direction Period (s) | W 6 | — | — | W 5 | — | — | — | — | — | W 6 | — | — | W 6 | — | — | — | — | — | — | — |
10 | — | — | 4 | — | — | — | — | — | 22 | — | — | 37 | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 85 | 3 | 85 | 18 | 0 | 83 | 85 | 85 | 83 | 85 | 0 | 85 | 85 | 15 | 83 | 85 | 27 | 83 | 85 | 0 |
Best forecast wave conditions in Orange County | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Trestles (Lowers) Surf forecast
The above surf forecast table for Trestles (Lowers) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Trestles (Lowers) can be found by selecting the local surf guide option on the grey menu. Our Trestles (Lowers) 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 (Lowers)) 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 (Lowers) 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 (Lowers) 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.










