Surf Forecasts:
Trestles (Lowers) surf forecast from 5 Aug 2026:
- Best quality surf: Saturday 8 Aug, 5AM (local time) - 3ft (0.9m), 18s period, SSW swell with glassy winds.
- Most powerful swell: Saturday 8 Aug, 5AM (local time) - 3ft (0.9m), 18s period, SSW swell with 438 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 11PM (local time) - 1.5ft (0.4m), 15s 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 Tuesday (Aug 04) at 11PM. The primary swell is predicted to be 0.4m and 15s period with a secondary swell of 0.4m and 13s. 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 0.9m 18s and forecast to arrive on Saturday (Aug 08) 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+) | 11PM (Tue 4th Aug) | 1.5ft (0.4m) 15s |
| Best Surf | 5AM (Sat 8th Aug) | 3ft (0.9m) 18s |
| Most Powerful | 5AM (Sat 8th Aug) | 3ft (0.9m) 18s |
Table - best surf conditions forecast for Trestles (Lowers) over the next 16 days.
The Lowdown
Alright, folks, Rusty here. Let’s break down the next couple of weeks.
Honestly, the immediate forecast is a total bummer. We’re looking at a long stretch of nothing for the first few days, and it doesn’t really get going until the second week. The water is a warm 76°, which is a full 9° warmer than usual for this time of year, so it’ll feel like a bathtub.
The first hint of something shows up on the morning of Friday, August 7th at Trestles (Lowers). We’ve got a 2ft SSW groundswell, but with a very long period of 19 seconds and a combined swell energy of 447 (moderate). That’s a long-period groundswell, which can be a bit straight at a beach break setup, but the wind is light and onshore, so it’s cleaner than the days before. It’s still only a marginal call, so don’t get your hopes up.
The pattern through that first week and into the second is pretty grim. The winds are mostly onshore or cross-onshore, keeping everything choppy. The swell stays small, mostly under 3ft, until the 14th of August.
Now, if you’ve got some patience, the real stand-out window looks like the morning of Saturday, August 15th. The swell bumps up to 4ft from the SSW with a period of 16 seconds, and the combined energy hits a strong 740. It’s still a bit of a cross-onshore wind, but it’s a gentle breeze, so it’s not going to be blown out. This is the biggest swell we’re going to see, and it means the wave faces will have some punch. Be mindful though, at 4ft it’s getting towards the top of what’s fun for beginners. The long period (16 sec) means it’ll be a proper groundswell, so better shape but longer lulls between sets.
On the morning of Sunday, August 16th, the swell drops back to 3ft, but the wind picks up to a moderate 12 mph from the west, making it choppy and cross-onshore. That’s not the one you want.
If you’re an advanced surfer, the 14th of August morning also shows some promise with a 2ft swell but a 19-second period and a combined energy of 592 (strong). The wind is light and onshore, so it’s clean, but the size is nothing to write home about.
The bottom line? The first week is a write-off. The best bet is the morning of the 15th of August, with 4ft SSW groundswell and a light breeze. It’s not a classic Trestles day, but it’s the best we’ve got.
Rusty.
Short Range ForecastMostly dry. Warm (max 24°C on Wed afternoon, min 20°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 25°C on Fri morning, min 22°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 13 | SSW 18 | SSW 19 | SSW 19 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SW 20 | SW 19 |
Wave Graph  | |||||||||||||||||||||
 kJ | 116 | 107 | 104 | 162 | 127 | 160 | 113 | 114 | 126 | 329 | 243 | 348 | 340 | 295 | 397 | 309 | 305 | 297 | 207 | 186 | 184 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | glassy | on | on | glassy | on | cross-on | cross-on | on | cross-on | glassy | on | cross-on | cross-on | on | on | cross | cross-on | on | cross-on |
High Tide | 1:29PM1.48m | 1:54AM0.95m | 2:22PM1.52m | 4:05AM0.83m | 3:33PM1.57m | 6:25AM0.88m | 4:49PM1.67m | 7:33AM1.00m | 5:58PM1.80m | 8:13AM1.11m | 6:57PM1.93m | 8:47AM1.21m | 7:49PM2.03m | ||||||||
Low Tide | 8:25PM0.49m | 7:15AM0.55m | 10:07PM0.40m | 7:58AM0.70m | 11:44PM0.22m | 9:36AM0.82m | 00:51AM0.02m | 11:25AM0.83m | 1:42AM-0.16m | 12:41PM0.74m | 2:27AM-0.29m | 1:39PM0.62m | 3:07AM-0.35m | ||||||||
 | |  | | | | | | | | | | | | | | | |  | | | |
 | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — |
 | — | 7:46 | — | — | 7:45 | — | — | 7:45 | — | — | 7:44 | — | — | 7:43 | — | — | 7:42 | — | — | 7:40 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 23 | 20 | 23 | 24 | 21 | 24 | 24 | 22 | 25 | 25 | 22 | 25 | 25 | 23 | 25 | 25 | 22 | 25 | 25 | 23 |
Feels °C | 24 | 23 | 21 | 24 | 24 | 23 | 25 | 25 | 23 | 26 | 25 | 23 | 26 | 25 | 25 | 25 | 25 | 23 | 25 | 24 | 24 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SSW 13 | SW 13 | SSW 19 | SSW 13 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 |
| kJ | 116 | 107 | 104 | 162 | 127 | 160 | 113 | 114 | 84 | 329 | 111 | 348 | 340 | 295 | 397 | 309 | 305 | 297 | 207 | 139 | 137 |
Swell 2 Height (m) Direction Period (s) | W 6 | SW 12 | W 5 | W 5 | SW 12 | W 4 | W 5 | SSW 20 | SSW 18 | SSW 13 | SSW 19 | SW 12 | SW 12 | SW 12 | SW 12 | W 4 | SW 11 | SW 11 | SW 20 | SW 20 | SW 19 |
| kJ | 9 | 36 | 8 | 7 | 34 | 4 | 8 | 79 | 126 | 114 | 243 | 124 | 69 | 114 | 118 | 3 | 42 | 42 | 106 | 186 | 184 |
Swell 3 Height (m) Direction Period (s) | SW 12 | S 10 | SW 12 | S 9 | S 9 | S 9 | S 12 | W 13 | W 5 | W 5 | W 12 | W 15 | S 9 | W 12 | W 13 | W 13 | SW 21 | SW 21 | SSW 11 | SW 16 | W 12 |
| kJ | 35 | 18 | 40 | 6 | 6 | 6 | 25 | 4 | 4 | 4 | 3 | 4 | 6 | 11 | 3 | 13 | 72 | 71 | 12 | 39 | 25 |
Wind waves Height (m) Direction Period (s) | — | W 6 | — | — | W 5 | — | — | W 5 | — | — | W 5 | — | W 4 | — | — | — | — | — | — | — | — |
| kJ | — | 9 | — | — | 8 | — | — | 8 | — | — | 4 | — | 3 | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 85 | 85 | 0 | 85 | 85 | 0 | 85 | 85 | 83 | 89 | 85 | 0 | 85 | 85 | 3 | 89 | 133 | 64 | 64 | 89 | 64 |
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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