Trestles (Uppers) Surf Break

Lat Long: 33.38° N 117.59° W

Trestles (Uppers) Surf Forecast and Surf Report

Issued: 10 am 11 Sep 2026 (local time)

Forecast update in  hr  min

Today's Trestles (Uppers) sea temperature is
20.7°C
0.9° 

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


Trestles (Uppers) surf forecast from 12 Sep 2026:

  • Best quality surf: Thursday 17 Sep, 5AM (local time) - 2.5ft (0.8m), 16s period, SSW swell with glassy winds.
  • Most powerful swell: Wednesday 16 Sep, 8AM (local time) - 2.5ft (0.8m), 17s period, SSW swell with 386 kJ wave energy.
  • Next surfable swell (1★+): Saturday 12 Sep, 8PM (local time) - 2ft (0.6m), 14s period with SW swell.

Best Forecast Surf Conditions for Trestles (Uppers) this week:

The surf forecast for Trestles (Uppers) over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 12) at 8PM. The primary swell is predicted to be 0.6m and 14s 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 (Uppers) in the next 16 days are 0.8m 17s and forecast to arrive on Wednesday (Sep 16) at 8AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 11s period and expected on Wednesday (Sep 16) at 8PM.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sat 12th Sep)2ft (0.6m) 14s
Best Surf 5AM (Thu 17th Sep)2.5ft (0.8m) 16s
Most Powerful 8AM (Wed 16th Sep)2.5ft (0.8m) 17s

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


The Lowdown

Alright folks, Rusty here. Let’s break down what’s happening at Trestles (Uppers) for the next couple weeks.

To be straight with you, it starts off pretty dead. From Friday the 11th (that’s today) through about Wednesday the 16th, there’s barely a pulse. The combined swell energy is stuck below 400, and with cross-onshore winds from the SSE and S, it’s mostly choppy and weak. A couple afternoons get onshore wind with waves around 2ft, but it’s barely a ripple. Water temp’s 69°, which is normal for this time of year, so at least the water’s not shockin’ ya.

We get a small tease on Thursday the 17th morning – a light cross-onshore breeze from the W, and a 3ft SSW groundswell with a 16-second period. The energy’s creeping up to 334. Still marginal, but it’s the first sign of life.

The real deal shows up on the weekend of the 19th and 20th of September. Saturday the 19th morning: a 3ft SW swell with an 18-second period – that’s proper groundswell. With a light onshore wind from the WSW, it’ll be glassy clean. The energy jumps to 535. Then Sunday the 20th morning is the pick: same 3ft SW swell, 18-second period, and the energy hits 614. The wind stays light onshore from the SW. This is the best window. Trestles (Uppers) is a reef and point break, and that long-period SW swell will wrap in nice and give you long, drifty walls. Crowds? Expect ’em – it’s always packed here.

If you’re new to it, those waves are under 5ft, so you’ll be fine. For the more experienced, the long period means the sets have push, but at a point break it’ll stand up clean.

Monday the 21st still has some juice – the energy climbs to 877 with a 3ft SW swell and 17-second period. The morning breeze from the S puts a bit of texture on it, but it’s still worth paddling out.

After that, it slowly fades. From Tuesday the 22nd onward, you’re looking at the same 3ft SW swell but the period drops to 15 seconds and the wind goes cross or cross-on. Rideable, but nothin’ to write home about.

Bottom line: if you want the best surf, mark your calendar for Saturday the 19th and Sunday the 20th. Small, clean, lined-up waves with that long-period power. Just expect a crowd.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 25°C on Fri morning, min 21°C on Sat night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 23°C on Mon morning, min 19°C on Mon night). Wind will be generally light.

Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
0
1
1
0
1
1
0
0
1
0
0
1
1
0
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)
0.9
SW
16
0.9
SW
15
0.9
SW
15
0.7
SW
14
0.6
SW
14
0.6
SW
14
1.1
W
7
0.5
SW
13
1.1
W
10
1.1
W
8
0.6
SW
18
0.5
SW
17
0.5
SW
16
0.4
SSW
20
0.4
SW
16
0.8
SSW
17
0.7
SSW
16
0.8
SSW
16
0.8
SSW
16
0.8
SSW
15
0.8
SSW
15
Wave Graph
Metric surfscale
Energy kJ
349
360
309
214
164
160
124
88
220
142
192
147
127
127
88
386
240
291
284
246
242
Wind (km/h)
15
SSE
10
S
10
SSE
15
S
10
SW
5
SSE
15
S
10
SSW
10
SE
15
SSE
15
SSW
10
SSE
10
S
10
SSW
5
SSE
10
SW
10
WSW
0
WSW
10
W
15
W
5
WNW
Wind State
cross-on
cross-on
cross
cross-on
on
cross-on
cross-on
on
cross
cross-on
on
cross-on
cross-on
on
glassy
on
cross-on
glassy
cross-on
cross-on
glassy
High Tide
9:46AM1.66m
9:50PM1.71m
10:15AM1.70m
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
Low Tide
3:52PM0.16m
4:08AM0.08m
4:33PM0.14m
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
clear
clear
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>
6:30
6:31
6:31
6:31
6:33
6:33
6:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:01
7:00
6:59
6:58
6:57
6:54
6:53
 mm
Temp °C
25
25
23
24
24
22
24
24
22
23
23
21
22
22
20
22
22
20
23
23
21
Feels °C
26
25
25
25
25
25
24
24
24
22
23
23
22
22
22
23
22
22
23
22
22
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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 (Uppers) Surf forecast

The above surf forecast table for Trestles (Uppers) provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Trestles (Uppers) can be found by selecting the local surf guide option on the grey menu. Our Trestles (Uppers) 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 (Uppers)) 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 (Uppers) 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 (Uppers) 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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