Trestles (Uppers) Surf Break

Lat Long: 33.38° N 117.59° W

Trestles (Uppers) Surf Forecast and Surf Report

Issued: 4 am 10 Sep 2026 (local time)

Forecast update in  hr  min

Today's Trestles (Uppers) sea temperature is
21.0°C
1.2° 

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 10 Sep 2026:

  • Best quality surf: Friday 11 Sep, 8PM (local time) - 3ft (0.9m), 15s period, SSW swell with glassy winds.
  • Most powerful swell: Thursday 10 Sep, 11AM (local time) - 3.5ft (1.0m), 17s period, SW swell with 560 kJ wave energy.
  • Next surfable swell (1★+): Friday 11 Sep, 8PM (local time) - 3ft (0.9m), 15s period with SSW 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 Friday (Sep 11) at 8PM. The primary swell is predicted to be 0.9m and 15s period with a secondary swell of 0.6m 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 1.0m 17s and forecast to arrive on Thursday (Sep 10) at 11AM. 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+) 8PM (Fri 11th Sep)3ft (0.9m) 15s
Best Surf 8PM (Fri 11th Sep)3ft (0.9m) 15s
Most Powerful11AM (Thu 10th Sep)3.5ft (1.0m) 17s

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


The Lowdown

Alright crew, Rusty here. Let's break down this stretch.

Truth is, it's pretty flat for a while. We've got a 16-day window, but don't get your hopes up for the first part. The first real chance of a wave doesn't come until Thursday the 19th of September, and even then it's a maybe. There's a long gap of nothing before that.

Trestles (Uppers) is the only break on the menu. It's a reef and point that's usually consistent, but it's going to need some help. The water is running at 70°, which is a touch warmer than normal for this time of year.

For the first week, from the 10th to the 18th, it's ugly. Swell is tiny, mostly under 3ft, with weak SW and W swells. The wind is a constant cross-onshore, making everything choppy and messy. The energy is weak, with combined swell energy values in the low hundreds (like 224 to 646). Not worth getting wet for.

There's a glimmer on the 19th of September. Thursday morning shows a 3ft swell from the SW, but the big news is the wind swings offshore (WSW at 10 km/h). That's the game-changer. The wave energy climbs to 512, which is moderate but a step in the right direction. The period is 18 seconds, which is a long-period groundswell. For a point break like Uppers, that means proper shape and power, but you'll be waiting for the sets. The crowds are always there, so be ready for a full lineup.

This pattern holds through the 21st, with the best looking swell on Monday the 21st at 3ft from the SW, with a 17-second period and offshore winds. The energy hits 673, the highest we see. This is the one to aim for. The wind is light and offshore, so it'll be clean. For a point, that long-period SW groundswell will wrap in beautifully.

After that, it fades. The swell drops back to 3ft, and the wind turns more cross-onshore again, messing it up. The second week is a dud.

The Standout: If you're going to pick a day, make it Monday the 21st of September. You'll get the cleanest conditions with that offshore wind, the biggest swell of the period at 3ft from the SW, and the highest wave energy. It's a long-period groundswell, so expect some quiet spells between sets, but the waves that come through will have some punch. Just remember, you won't be alone at Uppers.

For the rest of the run, this setup looks more like a kite-surfing session than a paddle-surfing one, with all that cross-onshore wind and small, weak swell.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Thu morning, min 20°C on Sat night). Wind will be generally light.

Days 4-6 Weather Summary

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

Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
2
0
1
1
0
0
1
0
0
1
0
0
1
0
1
2
1
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1
SW
17
1
SW
16
1
SW
16
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
0.9
W
8
1
W
10
1
W
10
0.5
SW
18
0.5
SW
17
0.5
SW
16
0.4
SSW
20
0.4
SSW
18
0.8
SSW
17
0.7
SSW
16
0.8
SSW
16
Wave Graph
Metric surfscale
Energy kJ
560
502
483
349
314
309
214
164
160
124
89
183
186
150
147
127
127
114
386
240
291
Wind (km/h)
10
S
10
S
15
SSE
15
SSE
10
S
10
SSE
15
S
10
SSW
10
SSE
15
S
15
S
10
SSE
15
S
15
S
10
SSE
10
S
10
SW
0
SSE
10
WSW
10
WSW
5
WSW
Wind State
cross-on
cross-on
cross
cross-on
cross-on
cross-on
cross-on
on
cross
cross-on
cross-on
cross
cross-on
cross-on
cross
cross-on
on
glassy
on
on
glassy
High Tide
9:17AM1.59m
9:10PM1.83m
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
Low Tide
3:10PM0.23m
3:40AM-0.05m
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
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
6:30
6:31
6:31
6:31
6:33
6:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:04
7:01
7:00
6:59
6:58
6:57
6:54
 mm
Temp °C
26
26
24
24
25
23
22
23
20
22
23
20
22
22
20
22
22
20
22
22
21
Feels °C
28
27
25
25
26
25
22
23
22
21
22
21
21
21
21
22
22
22
22
22
23
  • Map Icons:
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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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