Trestles (Lowers) Surf Break

Lat Long: 33.38° N 117.58° W

Trestles (Lowers) Surf Forecast and Surf Report

Issued: 10 pm 12 Sep 2026 (local time)

Forecast update in  hr  min

Today's Trestles (Lowers) sea temperature is
22.2°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 13 Sep 2026:

  • Best quality surf: Thursday 17 Sep, 11PM (local time) - 2.5ft (0.8m), 15s period, SSW swell with glassy winds.
  • Most powerful swell: Friday 18 Sep, 2AM (local time) - 3.5ft (1.0m), 15s period, SSW swell with 405 kJ wave energy.
  • Next surfable swell (1★+): Sunday 13 Sep, 8PM (local time) - 1.5ft (0.4m), 19s 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 (Sep 13) at 8PM. The primary swell is predicted to be 0.4m and 19s period with a secondary swell of 0.7m and 8s. Another secondary swell of 0.5m and 13s is also forecast. 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 1.0m 15s and forecast to arrive on Friday (Sep 18) at 2AM. Winds are predicted to be glassy at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sun 13th Sep)1.5ft (0.4m) 19s
Best Surf11PM (Thu 17th Sep)2.5ft (0.8m) 15s
Most Powerful 2AM (Fri 18th Sep)3.5ft (1.0m) 15s

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 cookin' for the Lower Trestles area over the next couple of weeks.

Right off the bat, I gotta be straight with ya – it's looking a bit flat and messy for the next few days. The swell energy is there, with readings bouncing around moderate levels, like 190 to 311 (combined energy of all swells directed here), but the wind is just not playing ball. For the first several days, we've got a persistent cross-onshore flow, mostly from the S and SW, that's keeping the surface choppy and bumpy. There's really nothing to get excited about for the first week. The swell is tiny, mostly around 1ft to 3ft, and that's not enough to overcome the chop.

Now, as we move into the middle of next week, things start to look a little more interesting. On Wednesday, September 16th, the morning shows a bit of hope with a light breeze and some unknown conditions, but the real shift might be on Thursday, September 17th. The morning session has some clouds, light cross-onshore wind, and a combined swell energy of 525 – that's a solid uptick in energy. The swell is still small at 3ft from the SSW with a 16-second period. That long period groundswell is a good sign for the quality, and while it's cross-onshore, the light wind means it shouldn't be too messy. It's a marginal call, but it's the best we've seen in a while.

The real standout, the one that's got my attention, is Saturday, September 19th. Both the morning and afternoon sessions are showing a combined swell energy of 557 and 510, with the swell holding at 3ft from the SW. The period is still a nice 18 seconds – that's some proper groundswell. The morning has an onshore wind, but it's only a light breeze, which could mean glassy or very light texture. This is the pick of the fortnight. The water temperature is about average for this time of year, so no surprises there. Remember, Trestles is very consistent, but when it's this small, the long period can make the waves break a little straight on the beach. It'll be better on the reefs and points. Also, crowds are *always* an issue here, so get in early or be ready to share.

After that, we roll into the second week with a similar theme. The swell stays in that 3ft to 3ft range, with periods dropping back to 14 or 15 seconds. The wind is still predominantly cross-onshore from the WSW, which isn't ideal, but it's light. The combined energy stays in the moderate range, around 300 to 400. Friday, September 25th morning might be a decent session with some clouds and light cross-onshore, and the same for Saturday, September 26th morning when the wind goes almost glassy offshore (light from the SW). It's all marginal, but it's surfable. Nothing is going to blow your mind, but you'll get wet.

So, to wrap it up: the first few days are a write-off. The best chance for a clean wave is Saturday, September 19th. The following week offers a few more marginal windows, but keep expectations low. It's not gonna be pumping, but there are a few windows of opportunity.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 24°C on Sun morning, min 19°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 24°C on Fri afternoon, min 19°C on Tue night). Wind will be generally light.

Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
1
1
0
0
1
0
0
2
1
0
2
1
0
3
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)
0.6
SW
14
0.5
SW
14
0.4
SW
19
1
W
10
1
W
8
0.5
SW
18
0.6
SW
17
0.6
SW
16
0.4
SSW
20
0.4
SSW
18
0.8
SSW
17
0.8
SSW
16
0.9
SSW
16
0.8
SSW
16
0.8
SSW
15
1
SSW
15
0.6
SW
19
0.6
SW
19
0.6
SW
19
Wave Graph
Metric surfscale
Energy kJ
160
89
131
188
119
150
190
161
127
114
386
347
366
284
246
405
303
303
234
Wind (km/h)
5
S
15
S
10
SW
10
SSE
20
S
15
S
10
SSE
10
S
10
SW
5
SE
10
SW
10
WSW
5
NW
10
WSW
15
W
5
WNW
10
WSW
15
W
5
WNW
Wind State
glassy
cross-on
on
cross
cross-on
cross-on
cross
cross-on
on
glassy
on
cross-on
glassy
cross-on
cross-on
glassy
cross-on
cross-on
glassy
High Tide
10:31PM1.55m
10:44AM1.70m
11:13PM1.36m
11:11AM1.66m
11:59PM1.17m
11:38AM1.58m
00:58AM0.99m
12:07PM1.48m
2:45AM0.87m
12:46PM1.38m
2:20PM1.29m
Low Tide
4:33AM0.24m
5:15PM0.16m
4:56AM0.41m
5:59PM0.22m
5:16AM0.57m
6:51PM0.30m
5:28AM0.72m
8:00PM0.38m
5:12AM0.84m
9:44PM0.41m
11:29PM0.35m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:31
6:33
6:33
6:33
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:59
6:58
6:57
6:54
6:53
6:52
 mm
Temp °C
21
24
24
22
23
23
21
22
23
20
22
22
20
22
22
20
23
24
21
Feels °C
24
24
25
24
22
22
22
22
23
22
23
22
22
22
21
21
24
23
22
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  • 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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