
Surf Forecasts:
The Trough surf forecast from 8 Aug 2026:
- Most powerful swell: Monday 10 Aug, 6AM (local time) - 7ft (2.2m), 7s period, SW swell with 447 kJ wave energy.
Best Forecast Surf Conditions for The Trough this week:
The most powerful waves expected at The Trough in the next 16 days are 2.2m 7s and forecast to arrive on Monday (Aug 10) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 4s period and expected on Sunday (Aug 09) at 6PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6AM (Mon 10th Aug) | 7ft (2.2m) 7s |
Table - best surf conditions forecast for The Trough over the next 16 days.
The Lowdown
Alright, mates, Rusty here. Let’s break down The Trough. Gotta be straight – it’s a flat spell and a half.
We’re looking at a long stretch of nothing special. The first wave worth paddling for? Well, there’s barely a whisper of energy until the end of the run. The bulk of the next two weeks is a bust. The surf just isn’t there. The Trough is a beach and reef setup, and it’s fairly exposed, but it’s getting nothing from the swell window. The wind is mostly a problem too – cross-shore and onshore breezes making a mess of what little bump there is.
For the first few days, right through the 8th of August to the 11th, it’s junk. Waves are tiny, under 3 ft, and the wind is a fresh cross-shore (15-25 mph) that’s killing any chance of a clean face. The energy is weak, with a combined energy reading of just 15 to 82. Don’t even bother.
Then we get a bit of a pulse on the 12th of August – Wednesday morning sees a 6 ft swell from the WSW, but the wind is onshore and strong. The energy jumps to 237 – that’s moderate wave energy – but it’s messy. That’s about the only size in the whole outlook. By the afternoon, it’s dropping and still onshore. The Trough needs a WSW direction to work best, and it’s getting that, but the wind is the villain.
The middle of the month, from the 13th of August all the way through to the 19th of August, is a total washout. Waves are knee-high at best, often less than 2 ft, and the energy is negligible (down to 1). The wind does go light and glassy on the 18th of August, but there’s no swell to ride. It’s a ghost town.
Finally, on the 19th of August, Wednesday morning, a little 4 ft N swell pops up, but the wind is a cross-shore again. The afternoon sees a 5 ft swell, but it’s cross-onshore and choppy. The energy is moderate (129), but the quality is poor. The Trough is just not cooperating.
The last few days of the forecast, from the 20th of August onward, the swell dies again. It’s all under 2 ft, with weak energy. The wind does turn clean and offshore on the 21st of August, but the waves are too small to matter.
The honest truth: There is no standout. There is no “best on offer.” The only size is on the 12th of August, but it’s blown out. If you’re a beginner, the 6 ft swell on the 12th is over your head, especially with the wind. For the experts, the wind is too bad. Honestly, with that strong wind and the beach-and-reef setup, the Trough is looking more interesting for kite surfing than a paddle session.
Stay patient. The water temp is about 57° here, which is normal for the time of year, but that’s cold comfort with no waves.
Rusty.
Short Range ForecastHeavy rain (total 22mm), heaviest during Sun afternoon. Very mild (max 15°C on Sat afternoon, min 10°C on Sun afternoon). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Tue night. Very mild (max 15°C on Thu night, min 9°C on Tue night). Winds decreasing (strong winds from the NW on Tue afternoon, light winds from the SW by Thu night). | ||||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||
AM | 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) | N 4 | N 4 | N 5 | N 5 | NW 4 | SW 4 | SW 6 | WSW 5 | W 4 | NW 5 | W 6 | WSW 6 | WSW 6 | WSW 6 | WSW 5 | WSW 4 | W 5 | WSW 9 | WSW 8 | WSW 8 | WSW 8 |
Wave Graph | |||||||||||||||||||||
13 | 20 | 88 | 70 | 23 | 44 | 269 | 50 | 21 | 82 | 40 | 263 | 237 | 188 | 45 | 21 | 15 | 15 | 23 | 14 | 13 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-off | cross-on | cross-on | on | cross-on | cross | cross-on | cross-on | on | on | on | on | on | on | cross-on | on | cross |
High Tide | 1:48PM1.38m | 7:08AM1.02m | 3:10PM1.59m | 5:27AM1.02m | 3:50PM1.76m | 5:11AM1.12m | 4:22PM1.88m | 5:13AM1.26m | 4:49PM1.93m | 5:24AM1.43m | 5:14PM1.93m | ||||||||||
Low Tide | 11:36PM0.42m | 10:57PM0.29m | 7:56AM1.02m | 10:56PM0.18m | 9:20AM0.81m | 11:05PM0.11m | 9:57AM0.60m | 11:16PM0.07m | 10:29AM0.41m | 11:27PM0.05m | 10:59AM0.27m | 11:39PM0.03m | |||||||||
7:05 | — | — | 7:03 | — | — | 7:03 | — | — | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | |
— | 5:37 | — | — | 5:38 | — | — | 5:39 | — | — | 5:39 | — | — | 5:40 | — | — | 5:42 | — | — | 5:43 | — | |
mm | — | — | 6 | 1 | 11 | 4 | — | — | — | — | 1 | 3 | 2 | — | — | — | — | — | — | — | — |
Temp °C | 14 | 15 | 13 | 14 | 14 | 13 | 13 | 12 | 12 | 13 | 14 | 11 | 14 | 14 | 12 | 14 | 14 | 15 | 14 | 14 | 13 |
Feels °C | 9 | 9 | 9 | 10 | 11 | 8 | 6 | 6 | 8 | 6 | 6 | 4 | 8 | 8 | 8 | 10 | 10 | 12 | 11 | 10 | 10 |
Swell 1 Height (m) Direction Period (s) | W 10 | W 8 | SW 10 | SW 13 | NNE 5 | — | — | WSW 10 | WSW 9 | — | W 6 | N 4 | S 19 | S 17 | SW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 8 | WSW 8 | WSW 8 |
2 | 1 | 4 | 6 | 4 | — | — | 37 | 17 | — | 40 | 3 | 7 | 6 | 21 | 15 | 15 | 15 | 23 | 14 | 13 | |
Swell 2 Height (m) Direction Period (s) | S 16 | W 5 | SW 14 | — | SW 9 | — | — | — | — | — | — | — | — | — | — | S 15 | S 16 | — | S 15 | S 16 | S 16 |
5 | 1 | 8 | — | 3 | — | — | — | — | — | — | — | — | — | — | 4 | 5 | — | 5 | 5 | 5 | |
Swell 3 Height (m) Direction Period (s) | — | S 15 | — | — | S 14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | 4 | — | — | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | N 4 | N 4 | N 5 | N 5 | NW 4 | SW 4 | SW 6 | WSW 5 | W 4 | NW 5 | NNW 5 | WSW 6 | WSW 6 | WSW 6 | WSW 5 | WSW 4 | W 5 | WSW 5 | — | — | — |
13 | 20 | 88 | 70 | 23 | 44 | 269 | 50 | 21 | 82 | 39 | 263 | 237 | 188 | 45 | 21 | 15 | 7 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 38 | 38 | 38 | 38 | 39 | 502 | 555 | 842 | 38 | 613 | 613 | 450 | 614 | 1049 | 38 | 613 | 38 | 38 | 379 | 126 | 126 |
Best forecast wave conditions in Adelaide | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the The Trough Surf forecast
The above surf forecast table for The Trough provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at The Trough can be found by selecting the local surf guide option on the grey menu. Our The Trough 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 (The Trough) 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 The Trough 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.
The Trough is 11 km (7 miles) from the very large city of Morphett Vale. If you plan a holiday in Adelaide, look for hotels and other accommodation in Morphett Vale. Morphett Vale has rooms for a wide range of budgets as well as cheap car hire and transport links.











