Surf Forecasts:
Trestles (Lowers) surf forecast from 26 Jul 2026:
- Best quality surf: Wednesday 29 Jul, 11PM (local time) - 3.5ft (1.0m), 16s period, SSW swell with glassy winds.
- Most powerful swell: Friday 31 Jul, 5AM (local time) - 6.5ft (2.0m), 14s period, S swell with 1,663 kJ wave energy.
- Next surfable swell (1★+): Sunday 26 Jul, 8PM (local time) - 3.5ft (1.1m), 18s period with SW 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 26) at 8PM. The primary swell is predicted to be 1.1m and 18s period with a secondary swell of 0.5m and 6s. 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 2.0m 14s and forecast to arrive on Friday (Jul 31) at 5AM. 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+) | 8PM (Sun 26th Jul) | 3.5ft (1.1m) 18s |
| Best Surf | 11PM (Wed 29th Jul) | 3.5ft (1.0m) 16s |
| Most Powerful | 5AM (Fri 31st Jul) | 6.5ft (2.0m) 14s |
Table - best surf conditions forecast for Trestles (Lowers) over the next 16 days.
The Lowdown
Alright, Rusty here. Let's break down the next couple of weeks.
I won't sugarcoat it: the first week or so is a bit of a struggle. There's a lot of "marginal" talk in the data, and the numbers back it up. The water is a warm 71° – that's much warmer than usual for this time of year, so at least you won't be shivering while you're waiting for a wave.
The best of the bunch, and the only real standout here, is Trestles (Lowers). It's a very consistent, exposed beach and reef setup, so it catches everything. The best bet looks like Thursday, July 30th through Friday, July 31st. We've got a solid, long-period groundswell filling in from the SSW/S, coming in at about 6 ft to 6 ft. That's a bit of size, but it's fine for an advanced spot. The period is 14-15 seconds, which is proper long-period energy – meaning better shaped, more powerful waves. The combined energy on Friday morning is pumping hard at 1391 (strong). The wind is light and blowing from the SW, which is offshore here. That's the key: glassy, clean conditions on a decent sized, long-period swell. This is the session to point your board at.
The Saturday after that, August 1st, the swell drops to 5 ft, losing a bit of that period, but it's still clean with light offshore winds. It'll be smaller but still surfable.
Then we hit a big gap. From Sunday, August 2nd, all the way through to the end of the outlook on Monday, August 10th, it's a poor run. The swell drops right off to 1 ft to 3 ft, and the wind turns cross-onshore more often than not. The combined energy numbers are all under 600. It's a tough stretch. There's a tiny flicker on Friday, August 7th morning with a 3 ft swell from the SSW and a 19-second period, but the cross-onshore wind will chop it up. It's just not worth the paddle for most of that second week.
So, to sum it up: your window is the end of July and the very start of August. Get on it, because after that, the lake is set to flatten out for a while.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Sun afternoon, min 21°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Wed afternoon, min 21°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | |||||||||||||||
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 19 | SW 18 | SW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | S 16 | S 14 | SSW 15 | S 14 | SSW 14 | S 13 | SSW 13 | SSW 12 | SSW 12 | SSW 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 863 | 743 | 719 | 1056 | 893 | 771 | 1009 | 1020 | 818 | 612 | 733 | 683 | 1163 | 775 | 1525 | 1367 | 1034 | 915 | 645 | 585 | 202 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | on | on | cross | cross-on | on | cross | cross-on | cross-on | cross-on | on | on | glassy | on | cross-on | glassy | on | on | cross-on |
High Tide | 9:12AM1.07m | 7:47PM1.70m | 9:35AM1.11m | 8:23PM1.76m | 9:59AM1.15m | 8:55PM1.80m | 10:24AM1.19m | 9:27PM1.80m | 10:49AM1.24m | 9:59PM1.76m | 11:17AM1.29m | 10:31PM1.68m | 11:45AM1.34m | 11:06PM1.55m | |||||||
Low Tide | 1:32PM0.78m | 3:13AM-0.08m | 2:10PM0.72m | 3:42AM-0.12m | 2:46PM0.66m | 4:09AM-0.14m | 3:21PM0.61m | 4:36AM-0.13m | 3:58PM0.58m | 5:03AM-0.09m | 4:35PM0.55m | 5:29AM-0.02m | 5:17PM0.54m | ||||||||
 |  |  | | | | | | | | | | | | | | | | | | | |
 | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — |
 | — | 7:53 | — | — | 7:53 | — | — | 7:52 | — | — | 7:52 | — | — | 7:51 | — | — | 7:51 | — | — | 7:50 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 25 | 23 | 25 | 25 | 22 | 24 | 24 | 22 | 24 | 25 | 22 | 24 | 24 | 22 | 24 | 25 | 23 | 26 | 26 | 23 |
Feels °C | 25 | 26 | 25 | 26 | 26 | 24 | 24 | 24 | 23 | 24 | 25 | 24 | 25 | 24 | 23 | 25 | 25 | 24 | 27 | 27 | 24 |
Swell 1 Height (m) Direction Period (s) | SW 19 | SW 18 | SW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | S 16 | S 14 | SSW 15 | S 14 | SSW 14 | S 13 | SSW 13 | SSW 12 | SSW 12 | SSW 11 |
| kJ | 863 | 743 | 719 | 1056 | 893 | 771 | 1009 | 1020 | 818 | 612 | 733 | 683 | 1163 | 775 | 1525 | 1367 | 1034 | 915 | 645 | 585 | 202 |
Swell 2 Height (m) Direction Period (s) | W 7 | W 6 | W 7 | W 7 | W 7 | W 7 | W 7 | W 7 | S 16 | SSE 15 | SSE 14 | SSW 16 | W 6 | S 13 | W 7 | W 7 | W 6 | W 7 | W 6 | W 6 | SW 13 |
| kJ | 33 | 21 | 15 | 54 | 37 | 34 | 62 | 33 | 134 | 225 | 215 | 499 | 13 | 411 | 27 | 24 | 12 | 14 | 19 | 18 | 142 |
Swell 3 Height (m) Direction Period (s) | S 9 | S 9 | SSW 11 | S 11 | SW 12 | S 8 | S 10 | SSE 18 | W 7 | W 7 | W 7 | W 6 | — | W 7 | — | — | — | SW 21 | SW 20 | SW 19 | W 6 |
| kJ | 45 | 25 | 40 | 21 | 37 | 6 | 9 | 64 | 22 | 34 | 22 | 12 | — | 14 | — | — | — | 18 | 15 | 15 | 18 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 80 | 130 | 64 | 64 | 144 | 3 | 83 | 83 | 64 | 64 | 64 | 27 | 89 | 85 | 0 | 85 | 85 | 0 | 83 | 85 | 27 |
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.
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