Surf Forecasts:
Trespassers surf forecast from 6 Aug 2026:
- Best quality surf: Friday 7 Aug, 3AM (local time) - 5.5ft (1.7m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 12 Aug, 9AM (local time) - 11ft (3.5m), 18s period, SW swell with 7,451 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 Aug, 6PM (local time) - 3ft (0.9m), 18s 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 6PM. The primary swell is predicted to be 0.9m and 18s period with a secondary swell of 1.0m and 15s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Trespassers in the next 16 days are 3.5m 18s and forecast to arrive on Wednesday (Aug 12) at 9AM. 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 3s period and expected on Friday (Aug 07) at 9AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Thu 6th Aug) | 3ft (0.9m) 18s |
| Best Surf | 3AM (Fri 7th Aug) | 5.5ft (1.7m) 16s |
| Most Powerful | 9AM (Wed 12th Aug) | 11ft (3.5m) 18s |
Table - best surf conditions forecast for Trespassers over the next 16 days.
The Lowdown
Right, listen up. This stretch we’re looking at for Trespassers is going to be a lesson in patience. We’ve got a lot of swell on the way, but the wind is going to be a nightmare for most of it. Straight up, the next week to ten days are not looking good for a paddle. We’re talking about a solid run of poor conditions starting from Thursday the 6th of August. The reef break is getting hammered, but with onshore and strong cross-onshore winds, it’s going to be a messy, blown-out mess.
The first real sign of life doesn’t come until much later. The standout window, the one you need to circle, is Sunday morning the 16th of August. On that morning, we’ve got a clean 5ft swell coming from the SW, period of 15 seconds – that’s proper groundswell energy. But the key is the wind: a light NNE breeze at 3 mph, cross-offshore. That is going to make Trespassers look absolutely perfect. The water temp is about 58°, which is normal for this time of year. The combined energy is a moderate 774, so it’s not a bomb, but the quality will be there. Conditions look spot on for a session.
After that, we get a brief calm on Tuesday the 18th of August. That morning shows glassy conditions with a 4ft SW swell at 14 seconds. Combined energy is 628, still moderate, but with zero wind? That’s a rare treat, and it’ll be clean and inviting. Good for a sneaky paddle.
Most other days, the swell is either too small, too short period, or just completely wrecked by the wind. Saturday the 8th of August, for example, has 4ft but a fresh 22 mph cross-shore making it lumpy. And don’t even think about the 9th or 12th – that’s big swell (8ft to 12ft) but with gale-force onshore winds, making it dangerous and un-rideable. That’s kite-surf territory, not for a surfboard.
So, keep your powder dry. The 16th of August is the one that’s calling. Don’t get sucked into the early week hype.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest on Sat night. Very mild (max 16°C on Fri afternoon, min 11°C on Sat night). Winds increasing (calm on Thu afternoon, fresh winds from the N by Fri night). | Days 4-6 Weather SummaryHeavy rain (total 22mm), heaviest during Sun morning. Very mild (max 15°C on Mon afternoon, min 11°C on Sun morning). Winds decreasing (near gales from the WSW on Sun morning, moderate winds from the WNW by Mon morning). | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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) | SSW 16 | SW 16 | SW 15 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 16 | SW 15 | SW 18 | SW 17 | SW 16 | SW 15 | SW 14 | WSW 13 | SW 19 | SW 18 | SW 16 | SW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 441 | 610 | 1133 | 1412 | 1305 | 1052 | 1155 | 784 | 658 | 2035 | 3367 | 5132 | 4043 | 2790 | 1581 | 801 | 2394 | 6637 | 7451 | 6124 | 6702 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | cross-off | cross | cross-off | cross | cross | cross-on | on | cross-on | on | cross-on | cross-on | cross | cross | on | cross-on | cross-on | cross-on | cross-on |
High Tide | 3:06PM0.02m | 2:07PM0.02m | 2:08PM0.02m | 2:27PM0.02m | 2:49PM0.02m | 3:25AM0.00m | 3:12PM0.02m | 3:21AM0.00m | 3:33PM0.02m | ||||||||||||
Low Tide | 00:39AM0.00m | 00:42AM0.00m | 00:36AM0.00m | 00:10AM0.00m | 11:48PM0.00m | 6:22AM0.00m | 11:30PM0.00m | 7:28AM0.00m | 11:17PM0.00m | ||||||||||||
 | |  | |  |  |  |  | |  | |  | | | | | |  | | | | |
 | 7:13 | — | — | 7:11 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — | 7:07 | — | — | 7:07 | — | — |
 | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — |
mm | — | — | — | — | 1 | 1 | — | 2 | 8 | 7 | 2 | — | 1 | 2 | — | — | 6 | 4 | 6 | 1 | — |
Temp °C | 14 | 14 | 14 | 15 | 16 | 14 | 16 | 16 | 14 | 11 | 12 | 13 | 14 | 15 | 14 | 15 | 12 | 12 | 12 | 12 | 13 |
Feels °C | 11 | 12 | 13 | 9 | 10 | 8 | 11 | 10 | 9 | 2 | 2 | 5 | 10 | 11 | 7 | 7 | 5 | 1 | 1 | 0 | 6 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SW 16 | SW 15 | SW 16 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | NNE 5 | SW 20 | — | SW 17 | SW 16 | SW 15 | SW 14 | SW 23 | SW 19 | — | — | — |
| kJ | 441 | 610 | 1133 | 1412 | 1305 | 1052 | 1155 | 784 | 658 | 2 | 147 | — | 4043 | 2790 | 1581 | 801 | 85 | 911 | — | — | — |
Swell 2 Height (m) Direction Period (s) | WSW 4 | WSW 5 | SW 6 | — | NE 4 | — | — | NE 5 | — | NNE 5 | — | — | — | — | — | — | SSW 24 | — | — | — | — |
| kJ | 3 | 8 | 8 | — | 1 | — | — | 4 | — | 2 | — | — | — | — | — | — | 54 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | W 4 | W 6 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | E 6 | — | — | — | — |
| kJ | 1 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | NNE 3 | NNW 4 | N 3 | NW 4 | WNW 4 | NNW 3 | SW 16 | SW 15 | SW 18 | NW 4 | NW 5 | NW 5 | NNW 6 | WSW 13 | SW 19 | SW 18 | SW 16 | SW 17 |
| kJ | — | — | — | 2 | 7 | 6 | 15 | 13 | 3 | 2035 | 3367 | 5132 | 17 | 28 | 38 | 129 | 2394 | 6637 | 7451 | 6124 | 6702 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 59 | 13 | 0 | 100 | 67 | 100 | 100 | 730 | 101 | 160 | 546 | 970 | 160 | 14 | 161 | 730 | 1193 | 1184 | 731 | 1034 | 742 |
Best forecast wave conditions in Yorke Peninsula | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Trespassers surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
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