Surf Forecasts:
Trespassers surf forecast from 19 Jul 2026:
- Most powerful swell: Thursday 23 Jul, 3PM (local time) - 6ft (1.9m), 15s period, SSW swell with 1,655 kJ wave energy.
Best Forecast Surf Conditions for Trespassers this week:
The most powerful waves expected at Trespassers in the next 16 days are 1.9m 15s and forecast to arrive on Thursday (Jul 23) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 3PM (Thu 23rd Jul) | 6ft (1.9m) 15s |
Table - best surf conditions forecast for Trespassers over the next 16 days.
The Lowdown
Alright, let’s talk about Trespassers in feet and miles per hour.
The first week’s a bust. From the 20th to the 25th, it’s all cross and cross-onshore winds, choppy surfaces, and pretty ugly conditions. There’s a spike of energy on the 23rd with a combined swell energy of 2684, but with 30 mph winds blowing cross-shore, it’s just a mess. Water temp is about 60°F, which is pretty normal for this time of year.
Then things turn around. The standout is Wednesday, July 29th, in the afternoon. Trespassers will see a 5ft swell from the SSW, with a very long period of 18 seconds – that’s real groundswell. The combined energy is 1448, and we’ve got offshore wind from the ESE at 12 mph. That’s going to produce clean, powerful waves, but it’s a reef break and the size is heading into expert territory. The sets will be spaced out, making it easier to get out back. Crowds can show up sometimes, so be ready.
Thursday the 30th is also worth a look: 5ft from the SSW, 16-second period, and offshore wind from the east at 9 mph. Clean and fun, but a step down in size.
After that, the swell fades into the first week of August, with smaller waves and lighter winds, but nothing that really stands out. The 29th and 30th are your days.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Tue night. Very mild (max 16°C on Tue afternoon, min 11°C on Wed night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Fri night. Very mild (max 14°C on Fri night, min 11°C on Thu morning). Winds decreasing (fresh winds from the SSW on Thu morning, light winds from the W by Sat night). | ||||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | |||||||||||||||
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) | SW 15 | SW 15 | SW 14 | SW 13 | SW 12 | SW 12 | SW 13 | SW 12 | SSW 14 | SW 15 | SSW 15 | SSW 15 | SSW 15 | SW 15 | SW 14 | SSW 13 | SSW 13 | SW 12 | SW 12 | SW 12 | SW 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 427 | 535 | 787 | 437 | 346 | 209 | 451 | 478 | 1244 | 1358 | 1655 | 1423 | 1014 | 1045 | 731 | 572 | 444 | 341 | 278 | 199 | 259 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | on | on | on | cross-on | on | cross-on | on | on | cross-on |
High Tide | 4:48PM0.02m | 8:59AM0.01m | 4:19PM0.02m | 3:25PM0.02m | 2:38PM0.02m | 2:30PM0.02m | 2:42PM0.02m | 2:59PM0.02m | 2:07AM0.00m | ||||||||||||
Low Tide | 10:39AM0.01m | 00:33AM0.00m | 10:05AM0.01m | 00:47AM0.00m | 1:05AM0.00m | 1:20AM0.00m | 1:51AM0.00m | 5:03AM0.00m | 00:09AM0.00m | ||||||||||||
 | |  | | |  |  | | | | |  | | | |  | | | | |  | |
 | 7:26 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — |
 | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — | — | 5:34 | — | — | 5:35 | — |
mm | — | — | — | — | — | 1 | 1 | 1 | — | — | — | — | — | — | 1 | 2 | 1 | — | 1 | 1 | — |
Temp °C | 14 | 15 | 15 | 15 | 16 | 15 | 13 | 13 | 12 | 11 | 12 | 12 | 12 | 12 | 14 | 14 | 14 | 14 | 14 | 14 | 14 |
Feels °C | 10 | 12 | 12 | 11 | 13 | 11 | 8 | 7 | 6 | 4 | 7 | 8 | 6 | 6 | 10 | 10 | 10 | 11 | 11 | 10 | 11 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 14 | SW 13 | SW 12 | SW 12 | SW 11 | SSW 11 | SSW 14 | SW 15 | SW 15 | SSW 15 | SSW 15 | SW 15 | SW 14 | SSW 13 | SSW 13 | SW 12 | SW 12 | SW 12 | SW 12 |
| kJ | 427 | 535 | 787 | 437 | 346 | 209 | 31 | 82 | 1244 | 1326 | 1418 | 1423 | 1014 | 1045 | 731 | 572 | 444 | 341 | 278 | 199 | 259 |
Swell 2 Height (m) Direction Period (s) | — | — | WNW 5 | — | — | SW 15 | SSW 14 | — | — | — | — | — | — | — | — | S 18 | S 18 | SW 16 | SSW 16 | SW 15 | SW 15 |
| kJ | — | — | 6 | — | — | 34 | 20 | — | — | — | — | — | — | — | — | 6 | 6 | 10 | 25 | 8 | 57 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 18 | SW 16 | SW 16 | — | SW 14 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 12 | 10 | 10 | — | 73 |
Wind waves Height (m) Direction Period (s) | NNW 3 | WNW 4 | — | NNW 2 | WNW 3 | W 4 | SW 13 | SW 12 | SW 5 | SW 15 | SSW 15 | — | W 4 | WSW 4 | WSW 5 | WSW 5 | — | — | — | W 4 | WSW 5 |
| kJ | 2 | 7 | — | 1 | 2 | 9 | 451 | 478 | 34 | 1358 | 1655 | — | 10 | 26 | 22 | 15 | — | — | — | 8 | 26 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 17 | 14 | 14 | 14 | 14 | 100 | 159 | 553 | 553 | 742 | 1193 | 13 | 297 | 499 | 499 | 321 | 722 | 13 | 14 | 138 | 14 |
Best forecast wave conditions in Yorke Peninsula | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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