Trestles (Lowers) Surf Break

Lat Long: 33.38° N 117.58° W

Trestles (Lowers) Surf Forecast and Surf Report

Issued: 4 pm 18 Aug 2026 (local time)

Forecast update in  hr  min

Today's Trestles (Lowers) sea temperature is
22.3° C
2.6° 

Trestles (Lowers) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Trestles (Lowers) surf forecast from 19 Aug 2026:

  • Best quality surf: Monday 24 Aug, 5AM (local time) - 2.5ft (0.8m), 14s period, SSW swell with glassy winds.
  • Most powerful swell: Wednesday 19 Aug, 5PM (local time) - 3ft (0.9m), 16s period, SSW swell with 387 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 19 Aug, 2AM (local time) - 2.5ft (0.8m), 15s 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 Wednesday (Aug 19) at 2AM. The primary swell is predicted to be 0.8m and 15s 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 (Lowers) in the next 16 days are 0.9m 16s and forecast to arrive on Wednesday (Aug 19) at 5PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Wed 19th Aug)2.5ft (0.8m) 15s
Best Surf 5AM (Mon 24th Aug)2.5ft (0.8m) 14s
Most Powerful 5PM (Wed 19th Aug)3ft (0.9m) 16s

Table - best surf conditions forecast for Trestles (Lowers) over the next 16 days.


The Lowdown

Alright folks, Rusty here with a look at what’s coming up. We’ve got a 16-day window, but honestly, for the first week and a half, it’s gonna feel like we’re sitting on our hands. There’s a big stretch of nothing special to write home about.

We’ve got Trestles (Lowers) as our only real option to look at. The water’s sitting at a warm 72°, which is *way* warmer than usual for this time of year—we're talking much warmer than normal. That’s a nice bonus when you’re sitting out there.

Starting Tuesday afternoon, August 18th, the swell is tiny at 2ft from the SSW, but it’s got some real grunt with a 17-second period. That's a proper long-period groundswell. The problem? Cross-onshore wind and a combined energy reading of 382, which is moderate—but the overall vibe is just "poor surf conditions." Not worth paddling out for.

Wednesday the 19th into the weekend is a tough stretch. Swell hangs around 2ft to 3ft, period stays long (13–19 seconds), but the wind is all wrong. It’s mainly onshore or light cross-on, and the combined energy dips into the low hundreds. We’re looking at marginal surf at best. There’s a lot of “questionable tide conditions” chatter in the data.

The real kicker is the gap. From Tuesday the 18th all the way to the end of August, there are no legitimate standouts. The surf just isn't happening. It's a dry run.

Now, if you’re willing to wait, things start looking interesting towards the end of the month. Saturday, August 29th, we finally get a pulse. The morning shows a 4ft SSW groundswell with a 17-second period, combined energy jumping to 792 (moderate to strong), and light cross-onshore wind. The afternoon is similar: 4ft at 16 seconds. This is the best on offer, but it’s still only scoring as marginal. It’s a promise, not a guarantee. The wind isn’t perfect, but it’s light enough that Trestles might get some shape out of that long-period energy. Keep an eye on it.

Sunday the 30th and Monday the 31st keep some of that 4ft to 3ft SSW swell, but the period drops a bit, and the wind turns more onshore. The combined energy drops back into the 400s. It’s fishable, but not epic.

Into the first week of September, the swell fades again. Tuesday September 1st has a tiny 1ft wave with a super long 18-second period (combined energy 395) but with onshore wind. Not your day.

The second week is touch and go. Wednesday the 2nd has some bump in energy (592) with 2ft SSW swell, but again, the wind is cross-on. Nothing is screaming “drop everything and go.”

If you’re a kiter, the consistent wind and small, choppy surf on those beach-and-reef days might be more your thing than paddle surfing.

So, the takeaway? A long quiet spell, then a flicker of hope around August 29th. Don’t get your hopes up too high, but it’s something to watch. Forecasts can change.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Wed morning, min 22°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 27°C on Sat afternoon, min 23°C on Fri night). Wind will be generally light.

Tue
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
2
1
1
1
0
1
2
1
0
2
0
0
2
1
1
2
1
0
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.7
SSW
17
0.8
SSW
15
0.9
SSW
16
0.9
SSW
16
0.8
SSW
15
0.8
SSW
14
0.8
SSW
14
0.8
SSW
14
0.7
SSW
13
0.6
SSW
13
0.6
SSW
13
0.4
SW
18
0.6
SSW
15
0.7
SSW
14
0.5
SW
19
0.5
SW
18
0.8
SSW
14
0.6
SW
18
0.6
SW
17
0.7
SW
17
Wave Graph
Metric surfscale
Energy kJ
243
272
377
387
249
236
236
226
156
137
135
92
167
218
177
155
269
197
179
273
Wind (km/h)
15
W
5
WSW
10
WSW
10
WSW
10
SSE
10
SSW
10
SSW
5
SSE
10
SW
10
WSW
0
SSW
10
WSW
10
W
5
SSW
10
SSW
10
WSW
0
SSW
5
SW
15
W
5
SSE
Wind State
cross-on
glassy
on
cross-on
cross
cross-on
on
glassy
on
cross-on
glassy
on
cross-on
glassy
on
on
glassy
on
cross-on
glassy
High Tide
2:46AM0.87m
2:22PM1.40m
3:41PM1.37m
8:16AM0.98m
5:05PM1.40m
8:13AM1.05m
6:07PM1.49m
8:24AM1.11m
6:54PM1.59m
8:38AM1.17m
7:31PM1.68m
Low Tide
8:50PM0.46m
6:55AM0.73m
10:43PM0.43m
00:16AM0.32m
9:51AM0.97m
1:08AM0.21m
11:54AM0.93m
1:45AM0.11m
12:49PM0.84m
2:15AM0.03m
1:27PM0.73m
2:41AM-0.02m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:16
6:16
6:16
6:18
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:32
7:31
7:30
7:29
7:28
7:27
7:25
 mm
Temp °C
25
22
26
26
23
25
25
23
26
26
23
26
27
24
26
27
24
27
27
24
Feels °C
26
23
28
26
25
26
26
25
27
27
25
26
27
26
27
27
26
28
27
26
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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