Trestles (Uppers) Surf Break

Lat Long: 33.38° N 117.59° W

Trestles (Uppers) Surf Forecast and Surf Report

Issued: 4 am 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Trestles (Uppers) sea temperature is
21.7° C
1.9° 

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 20 Aug 2026:

  • Best quality surf: Thursday 27 Aug, 5AM (local time) - 5ft (1.6m), 14s period, SSW swell with glassy winds.
  • Most powerful swell: Thursday 27 Aug, 2AM (local time) - 5ft (1.6m), 14s period, SSW swell with 980 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 8PM (local time) - 2.5ft (0.8m), 14s 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 Thursday (Aug 20) at 8PM. The primary swell is predicted to be 0.8m and 14s period with a secondary swell of 0.5m 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 1.6m 14s and forecast to arrive on Thursday (Aug 27) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives.

Wave TypeTime (PDT) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Thu 20th Aug)2.5ft (0.8m) 14s
Best Surf 5AM (Thu 27th Aug)5ft (1.6m) 14s
Most Powerful 2AM (Thu 27th Aug)5ft (1.6m) 14s

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


The Lowdown

Righto, let’s have a look at what’s cookin’ for Trestles (Uppers). This is a reef and point set-up, very consistent, and it loves a good W swell. The water’s runnin’ a touch warmer than usual for this time of year, about 71°, which is noticeably above average.

First things first, the next few days are pretty bleak. Thursday morning, August 20, has a weak 3 ft SSW swell out of the southwest with a period of 14 seconds, but the energy is weak (334) and the wind is on it from the SW. The wave comment says “marginal surf forecast or questionable tide conditions,” and I’m not feeling it. That carries right through until about Wednesday, August 26. There’s a solid stretch of poor to marginal conditions, with swell sizes hanging around 1 ft to 3 ft and cross-onshore winds messin’ up the surface. Honestly, it’s a bit of a write-off for paddle surfing.

Now, things start to look a little more interesting from Wednesday morning, August 26. The swell picks up to 4 ft from the S with a period of 13 seconds, and the energy climbs to 884, which is moderate. The wind is a light cross-onshore breeze, so it’s not perfect but it’s a step up. By Wednesday afternoon, the swell hits 5 ft from the S, period still 13 seconds, and energy jumps to 1046 – that’s moderate-to-strong energy. The wind goes light and onshore from the SW, which could be glassy. The rating improves to a 3 out of 10, so this is the best of a so-so bunch.

Thursday, August 27, has a 4 ft to 5 ft SSW swell, but the wind is picking up and cross-onshore, making it rough. Friday, August 28, morning has a 5 ft SSW swell with light onshore wind (SW), which could be clean for a bit. The energy is still strong (837), but the period drops to 12 seconds, so it’s a shorter-period swell. Not a standout.

The standout for the whole period is that Wednesday afternoon, August 26, session at Trestles (Uppers). It’s got a solid 5 ft S swell, moderate-to-strong energy (1046), and the wind is light and onshore. The swell direction isn’t the ideal W, but S has some merit here due to the point’s exposure. The crowd is always an issue – it’s Uppers, so expect it to be packed. But for this long run of poor conditions, that’s about as good as it gets. For the rest of the run through to early September, the swell drops back to 2 ft to 4 ft, with cross-onshore winds, and the ratings are low. It’s a flat spell with a brief pulse of power in the last week of August.

If you’re a beginner, the 5 ft swell is probably fine, but anything over 5 ft will be too much. With the waves mostly under that mark, it’s okay. But the lack of quality and clean wind means it’s a tough call. Kite surfers might find the stronger wind days in late August more interesting than paddlers.

Keep an eye on that Wednesday, August 26, afternoon. It’s the only real glimmer in the 16 days.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 27°C on Sat afternoon, min 22°C on Thu night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 28°C on Sun afternoon, min 23°C on Mon night). Wind will be generally light.

Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Wednesday
26
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
0
1
1
1
0
0
2
1
0
2
1
0
2
1
1
2
1
3
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SSW
14
0.8
SSW
14
0.7
SSW
14
0.6
SSW
13
0.6
SSW
13
0.5
SSW
13
0.5
SSW
13
0.7
SSW
15
0.7
SSW
14
0.4
SW
19
0.5
SW
18
0.6
SW
18
0.6
SW
18
0.6
SW
17
0.6
SW
17
0.6
SW
16
0.8
S
13
1.2
S
13
1.3
S
13
1.4
S
13
1.6
SSW
14
Wave Graph
Metric surfscale
Energy kJ
239
236
175
139
137
98
92
188
218
127
155
213
197
179
224
216
222
470
551
663
980
Wind (km/h)
10
SSW
10
SSW
10
SSE
10
SW
10
WSW
5
SSW
10
WSW
15
W
5
SSE
10
WSW
15
WNW
5
W
10
WSW
15
WNW
5
SW
10
WSW
15
W
5
SSE
10
S
10
SW
10
SSE
Wind State
on
on
cross-on
on
cross-on
glassy
cross-on
cross-on
glassy
on
cross-on
glassy
on
cross-on
glassy
cross-on
cross-on
cross
cross-on
on
cross
High Tide
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
8:56AM1.23m
8:05PM1.75m
9:16AM1.30m
8:37PM1.78m
Low Tide
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
2:01PM0.63m
3:06AM-0.06m
2:35PM0.54m
3:31AM-0.06m
clear
clear
clear
clear
part cloud
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>
6:16
6:16
6:16
6:18
6:18
6:18
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:30
7:29
7:28
7:27
7:25
7:23
7:22
 mm
Temp °C
24
25
23
26
26
24
26
27
24
27
28
24
26
27
24
27
27
24
26
27
24
Feels °C
25
26
25
28
27
26
27
27
25
28
28
26
27
27
25
27
26
26
26
28
25
  • 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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