Surf Forecasts:
Trestles (Uppers) surf forecast from 7 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 5AM (local time) - 4.5ft (1.3m), 11s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 7 Sep, 5AM (local time) - 6ft (1.8m), 14s period, SSW swell with 1,363 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 5AM (local time) - 4.5ft (1.3m), 11s 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 Tuesday (Sep 08) at 5AM. The primary swell is predicted to be 1.3m and 11s period with a secondary swell of 0.6m and 14s. Another secondary swell of 0.4m and 4s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Trestles (Uppers) in the next 16 days are 1.8m 14s and forecast to arrive on Monday (Sep 07) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (PDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Tue 8th Sep) | 4.5ft (1.3m) 11s |
| Best Surf | 5AM (Tue 8th Sep) | 4.5ft (1.3m) 11s |
| Most Powerful | 5AM (Mon 7th Sep) | 6ft (1.8m) 14s |
Table - best surf conditions forecast for Trestles (Uppers) over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s get straight into it.
We’ve got a bit of a mixed bag over the next couple of weeks. The first solid window is this Sunday afternoon, September 6th, at Trestles (Uppers). It’s kicking off with a 5ft SSW groundswell, period at a solid 13 seconds, and a north-northeast breeze holding it cross-offshore. That wind direction means clean faces and a bit of push. The water is sitting at 74°, which is a good 6° warmer than normal for this time of year. That’s very unusual. The combined swell energy is 1298 (strong), so there’s a lot of power behind it. This is a reef and point setup, very consistent, and it loves a W swell direction, which this SSW is off its optimum, but the quality of the swell and the wind alignment more than make up for it. Crowds are always an issue here, so expect the lineup to be full.
Monday morning, September 7th, still has a decent 6ft SSW swell at 13 seconds, but the wind swings west-northwest, putting it cross-shore. It’s rideable, and the energy is still high at 1063 (strong), but it’s not as clean as Sunday. By Monday afternoon, the wind picks up to 16 mph from the west-northwest, making it cross-onshore and choppy. That’s a no-go.
Tuesday the 8th drops off quick. Swell drops to 4ft with a shorter 10-second period, energy down to 489 (moderate), and the cross-onshore wind just ruins it. The rest of the week into the second week is mainly small, weak, and wind-affected. Swell heights hover between 1ft and 4ft, periods are all over the shop, and the wind stays cross-on or onshore. There are a few glassy moments on Wednesday the 9th with a 2ft long-period 16-second groundswell from the SW, and the energy is 424 (moderate). That’s clean, but it’s tiny. Best for a log or a longboard.
From Thursday the 10th onwards it’s a long stretch of poor conditions. The swell sticks small, periods are long but the wind is either cross-on or light onshore, plus the energy levels are mostly under 700. There are a couple of days like Sunday the 20th and Monday the 21st where the combined energy climbs back over 600, but the swell is still under 4ft and the wind isn’t favourable. Nothing rally-worthy.
The standout, without question, is Sunday afternoon, September 6th. That 5ft swell, clean north-northeast wind, and strong groundswell energy make it the only real window worth paddling for. Monday morning is a backup, but the wind’s not as good.
Signing off, Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sun afternoon. Warm (max 29°C on Tue morning, min 24°C on Sun night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Wed afternoon, min 21°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Sun 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | S 13 | SSW 15 | SSW 13 | SSW 12 | SSW 11 | SSW 10 | SSW 10 | SSW 13 | SW 16 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 |
Wave Graph  | ||||||||||||||||||||
 kJ | 723 | 678 | 995 | 948 | 455 | 296 | 218 | 151 | 214 | 278 | 419 | 560 | 502 | 483 | 349 | 314 | 309 | 248 | 164 | 160 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-on | cross | cross-on | cross-on | glassy | glassy | glassy | cross-on | cross-on | on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross |
High Tide | 5:56PM1.74m | 7:51AM1.26m | 6:54PM1.85m | 8:19AM1.38m | 7:43PM1.91m | 8:47AM1.49m | 8:28PM1.91m | 9:17AM1.59m | 9:10PM1.83m | 9:46AM1.66m | 9:50PM1.71m | 10:15AM1.70m | 10:31PM1.55m | |||||||
Low Tide | 1:25AM-0.13m | 12:54PM0.67m | 2:04AM-0.19m | 1:43PM0.49m | 2:39AM-0.20m | 2:28PM0.34m | 3:11AM-0.15m | 3:10PM0.23m | 3:40AM-0.05m | 3:52PM0.16m | 4:08AM0.08m | 4:33PM0.14m | 4:33AM0.24m | |||||||
 |  |  |  | | | | | |  | | | |  | | | | | | | |
 | — | — | 6:28 | — | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:30 | — | — | 6:31 | — | — |
 | 7:08 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:04 | — | — | 7:01 | — | — | 7:00 | — |
mm | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 28 | 28 | 26 | 29 | 29 | 26 | 28 | 27 | 26 | 26 | 26 | 25 | 25 | 25 | 22 | 23 | 23 | 21 |
Feels °C | 26 | 26 | 29 | 27 | 25 | 28 | 27 | 28 | 30 | 27 | 28 | 27 | 27 | 27 | 25 | 26 | 23 | 23 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 12 | SSW 13 | SSW 12 | SSW 11 | SSW 10 | SSW 10 | SSW 10 | SSW 9 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | W 7 | SW 15 | W 6 | W 6 | W 6 | W 6 |
| kJ | 723 | 556 | 995 | 948 | 455 | 296 | 218 | 135 | 70 | 278 | 419 | 560 | 502 | 483 | 78 | 314 | 49 | 61 | 32 | 30 |
Swell 2 Height (m) Direction Period (s) | SSW 15 | SSW 15 | SW 19 | SW 19 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 9 | S 12 | W 6 | W 6 | W 7 | SW 16 | W 6 | SW 15 | SW 14 | SW 14 | SW 14 |
| kJ | 505 | 678 | 58 | 56 | 229 | 104 | 154 | 151 | 133 | 67 | 73 | 23 | 24 | 72 | 349 | 51 | 309 | 248 | 164 | 160 |
Swell 3 Height (m) Direction Period (s) | NW 12 | WSW 11 | SW 10 | W 11 | SW 18 | SW 18 | SW 18 | SW 16 | SW 16 | SSW 12 | W 5 | SW 8 | SW 8 | SW 7 | SW 7 | SW 6 | S 9 | S 9 | S 9 | S 9 |
| kJ | 6 | 11 | 4 | 2 | 50 | 80 | 81 | 130 | 214 | 85 | 11 | 33 | 22 | 19 | 12 | 5 | 14 | 14 | 14 | 13 |
Wind waves Height (m) Direction Period (s) | WNW 11 | NW 4 | WNW 4 | WNW 9 | W 4 | WNW 5 | WNW 3 | — | WNW 5 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 64 | 15 | 6 | 16 | 8 | 9 | 6 | — | 7 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 12 | 35 | 12 | 86 | 12 | 86 | 69 | 0 | 0 | 0 | 25 | 86 | 86 | 64 | 64 | 88 | 15 | 83 | 237 | 3 |
Best forecast wave conditions in Orange County | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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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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