
Surf Forecasts:
Trespassers surf forecast from 5 Aug 2026:
- Best quality surf: Friday 7 Aug, 12AM (local time) - 5.5ft (1.7m), 15s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 12 Aug, 3AM (local time) - 10ft (3.0m), 18s period, SW swell with 5,591 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 Aug, 9PM (local time) - 3.5ft (1.1m), 17s period with SW swell.
Best Forecast Surf Conditions for Trespassers this week:
The surf forecast for Trespassers over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 06) at 9PM. The primary swell is predicted to be 1.1m and 17s period with a secondary swell of 1.1m and 14s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Trespassers in the next 16 days are 3.0m 18s and forecast to arrive on Wednesday (Aug 12) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Aug 08) at 6PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 6th Aug) | 3.5ft (1.1m) 17s |
| Best Surf | 12AM (Fri 7th Aug) | 5.5ft (1.7m) 15s |
| Most Powerful | 3AM (Wed 12th Aug) | 10ft (3.0m) 18s |
Table - best surf conditions forecast for Trespassers over the next 16 days.
The Lowdown
Alright, let’s get into it. First up, the long-range picture. We’ve got a real dry spell on our hands for the first chunk of this forecast. The surf is going to be pretty gutless for the next several days, and honestly, it’s not worth getting too excited about until we get past the first week. Hang tight.
Wednesday and Thursday are a total washout. Tiny, disorganized swell, cross-shore winds, and a lumpy mess. The energy is weak, and the wave comment is just “poor surf conditions.” You’d be better off doing anything else. There’s a gap of a few days here with no real reason to paddle out.
Friday the 7th shows a pulse of slightly bigger swell, pushing up to about 6ft, but the wind is a cross-off, and the forecast is still marginal. It’s not clean enough to call a win. Saturday the 8th gets blown out by a fresh cross-shore breeze, and the swell gets lumpy. Sunday the 9th is a write-off with strong onshore winds and building, messy surf. Monday the 10th is more of the same, with a big jump in energy but the wind and chop ruin it.
The middle of the week sees some serious size, with 8ft on Wednesday the 12th, but it’s all onshore and junky. The energy is strong, but the quality isn’t there for a paddle. This looks more like a kite-surfing day, to be honest. The wind is just too strong and on it.
Now, here’s where things turn around. The standout window is the 14th and 15th of August. This is the one you’ve been waiting for. The swell drops to a solid 7ft on Friday the 14th, coming from the SSW with a long 18-second period. That’s serious groundswell energy, and the wind is light and offshore, or even glassy on Saturday. Conditions are clean, and the break is fairly consistent. This is the best of the lot, and at this size, it’s one for the experienced crew. The water temp is 58°F, which is about average for this time of year, so don't forget the booties.
The weekend after that, the 16th and 17th, still has some fun, smaller waves. The swell drops to about 4ft, but the wind stays offshore or light, and it’s clean. It’s a good option if you want a longboard day, but not the big show.
After that, it starts to get messy again. The 19th and 20th see the wind pick up and the swell get lumpy, so don’t get your hopes up for the final days of the window.
So, the long and short of it: the first week is a bust. The real gems are the 14th and 15th, with a solid, clean SSW groundswell and light winds. That’s your window. Everything else is a waiting game.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Fri afternoon. Very mild (max 16°C on Fri afternoon, min 12°C on Thu night). Winds increasing (calm on Thu night, fresh winds from the N by Sat morning). | Days 5-7 Weather SummaryHeavy rain (total 32mm), heaviest during Sat night. Very mild (max 16°C on Sat afternoon, min 11°C on Sat night). Winds increasing (moderate winds from the NW on Sat afternoon, strong winds from the SW by Sun afternoon). | |||||||||||||||||||
Wed 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | ||||||||||||||
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) | SSW 18 | SSW 16 | SSW 16 | SW 16 | SW 15 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 16 | SW 16 | SW 18 | SW 17 | SW 16 | SW 16 | SW 12 | SW 12 | SW 19 |
Wave Graph | ||||||||||||||||||||
283 | 475 | 441 | 610 | 1341 | 1412 | 1305 | 976 | 1087 | 953 | 742 | 1571 | 2120 | 4308 | 3496 | 2355 | 1494 | 884 | 854 | 5357 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 4:12PM0.02m | 3:06PM0.02m | 2:07PM0.02m | 2:08PM0.02m | 2:27PM0.02m | 2:49PM0.02m | 3:25AM0.00m | 3:12PM0.02m | 3:21AM0.00m | |||||||||||
Low Tide | 00:30AM0.00m | 00:39AM0.00m | 00:42AM0.00m | 00:36AM0.00m | 00:10AM0.00m | 11:48PM0.00m | 6:22AM0.00m | 11:30PM0.00m | ||||||||||||
— | — | 7:13 | — | — | 7:11 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | |
5:42 | — | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | |
mm | — | — | — | — | — | — | 1 | 1 | — | 3 | 15 | 4 | 3 | — | — | 2 | 1 | 4 | 5 | — |
Temp °C | 13 | 14 | 14 | 14 | 13 | 15 | 16 | 15 | 15 | 16 | 14 | 11 | 12 | 13 | 13 | 14 | 14 | 13 | 12 | 13 |
Feels °C | 9 | 11 | 11 | 11 | 12 | 9 | 11 | 8 | 9 | 12 | 8 | 4 | 2 | 7 | 7 | 8 | 6 | 4 | 4 | 5 |
Swell 1 Height (m) Direction Period (s) | SSW 18 | SSW 16 | SSW 16 | SW 16 | SW 15 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SSW 16 | SW 21 | SW 18 | SW 17 | SW 16 | SW 16 | SW 12 | SW 12 | SW 19 |
283 | 475 | 441 | 610 | 1341 | 1412 | 1305 | 976 | 1087 | 953 | 742 | 306 | 823 | 1241 | 3496 | 2355 | 1494 | 884 | 854 | 5357 | |
Swell 2 Height (m) Direction Period (s) | SW 13 | WSW 6 | WSW 4 | WSW 5 | — | — | — | WNW 7 | WNW 8 | W 7 | W 5 | NE 5 | SW 21 | — | — | — | — | N 6 | SW 23 | — |
144 | 3 | 11 | 8 | — | — | — | 45 | 75 | 24 | 7 | 1 | 214 | — | — | — | — | 1 | 257 | — | |
Swell 3 Height (m) Direction Period (s) | — | SW 12 | SW 20 | W 7 | — | — | — | — | SW 20 | — | NE 5 | — | NE 5 | — | — | — | — | — | NNW 5 | — |
— | 6 | 61 | 1 | — | — | — | — | 15 | — | 8 | — | 1 | — | — | — | — | — | 2 | — | |
Wind waves Height (m) Direction Period (s) | N 2 | WNW 6 | — | — | — | NNW 3 | NNW 4 | NNW 4 | NNW 4 | N 4 | NW 5 | SW 16 | SW 16 | SW 18 | SW 16 | — | NW 5 | NW 6 | — | W 4 |
1 | 6 | — | — | — | 2 | 8 | 20 | 16 | 19 | 30 | 1571 | 2120 | 4308 | 2103 | — | 46 | 112 | — | 29 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 14 | 17 | 14 | 13 | 14 | 0 | 100 | 18 | 138 | 100 | 100 | 100 | 480 | 651 | 978 | 14 | 14 | 752 | 722 | 722 |
Best forecast wave conditions in Yorke Peninsula | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Latest Updates
Information about the Trespassers Surf forecast
The above surf forecast table for Trespassers provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Trespassers can be found by selecting the local surf guide option on the grey menu. Our Trespassers 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 (Trespassers) 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 Trespassers 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.
Are you planning a holiday in Yorke Peninsula? If you are looking for accommodation near Trespassers, camping, hotels and holiday cottages in Yorke Peninsula, consider staying in Kingscote which is 86 km (53 miles) away.











