
Surf Forecasts:
Trespassers surf forecast from 19 Jul 2026:
- Best quality surf: Sunday 26 Jul, 3AM (local time) - 3.5ft (1.1m), 12s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 23 Jul, 3PM (local time) - 6ft (1.9m), 15s period, SSW swell with 1,655 kJ wave energy.
- Next surfable swell (1★+): Sunday 26 Jul, 3AM (local time) - 3.5ft (1.1m), 12s 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 Sunday (Jul 26) at 3AM. The primary swell is predicted to be 1.1m and 12s period. The wind is predicted to be cross-offshore as the swell arrives.
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. The largest open ocean swell (not directed at the beach) is 0.2m 3s period and expected on Thursday (Jul 23) at 9PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sun 26th Jul) | 3.5ft (1.1m) 12s |
| Best Surf | 3AM (Sun 26th Jul) | 3.5ft (1.1m) 12s |
| Most Powerful | 3PM (Thu 23rd Jul) | 6ft (1.9m) 15s |
Table - best surf conditions forecast for Trespassers over the next 16 days.
The Lowdown
Right, let’s have a look at Trespassers. It’s a reef break, and it’s had a pretty rough run of it. The first ten days or so are mostly a write-off – messy winds, onshore slop, and just poor surf. You’ll see a few days with size, but it’s wind-chopped and lumpy, not worth paddling out for. The water temp is sitting at 60°, which is about normal for this time of year, so no surprises there.
The first real glimmer of something decent comes on Sunday the 26th of July. The morning is glassy with a light Easterly breeze, and we’ve got a 3ft SW groundswell rolling in with a 12-second period. The combined energy’s moderate at 292. It’s not huge, but it’s clean – glassy conditions are a huge plus. That afternoon stays glassy too, with a 3ft SW swell, though the energy drops a bit to 247. It’s surfable, but just ordinary.
After that, we get another rough patch of cross and onshore winds until Wednesday the 29th of July. That morning sees a 6ft SW swell with a 13-second period and a cross-shore wind, but it’s only marginal – the combined energy is strong at 1171, but it’s choppy. The afternoon bumps up to 7ft, but it’s cross-onshore and fairly choppy, so still not great.
Thursday the 30th of July is a washout, but then we hit Friday the 31st of July. That’s a standout. The morning is clear, with a light cross-offshore breeze, and a 3ft SSW swell with a 13-second period. The combined energy is 268, and it’s clean. The afternoon is even better: glassy, with a 2ft SW swell and a 13-second period, energy at 391, and the conditions are just glassy. That’s a proper session.
Then we get into August. Saturday the 1st of August has a glassy afternoon with a 2ft SSW swell and a 17-second period – very long period groundswell, which will be peeling nicely at a reef like Trespassers, but the energy is moderate at 302. That morning is clean with offshore winds, smaller at 2ft, but the period is 18 seconds, so proper lines.
The real standout though is Monday the 3rd of August. Both morning and afternoon are excellent. The morning has a 4ft SSW swell, a 16-second period, and a moderate offshore breeze from the ENE. The combined energy is strong at 717, and it’s clean. The afternoon is the same: 4ft, 16 seconds, offshore from the East, and clean. That’s the best of the whole outlook – clean, consistent, and with good energy.
Crowds are sometimes a thing at Trespassers, so you might have a few others around on those better days, but it’s worth it.
So, overall, it’s a slow start. The first week is mostly a bust. The second week starts to look up, with Friday the 31st of July and Monday the 3rd of August being the clear picks. The long-range stuff is promising but less certain.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue night. Very mild (max 16°C on Sun night, min 13°C on Sun afternoon). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Wed afternoon. Very mild (max 14°C on Fri night, min 11°C on Wed night). Mainly fresh winds. | |||||||||||||||||||
Sun 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||
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 18 | SW 16 | SW 15 | SW 15 | SW 14 | SW 13 | SW 12 | SW 12 | SW 6 | SW 11 | SSW 14 | SW 14 | SSW 15 | SSW 15 | SSW 15 | SW 14 | SW 14 | SW 13 | SSW 13 | SW 12 |
Wave Graph | ||||||||||||||||||||
252 | 376 | 432 | 472 | 787 | 437 | 306 | 209 | 156 | 563 | 1193 | 1303 | 1655 | 1288 | 1001 | 752 | 556 | 501 | 444 | 358 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-on | cross | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross |
High Tide | 5:01PM0.02m | 7:05AM0.01m | 4:48PM0.02m | 8:59AM0.01m | 4:19PM0.02m | 3:25PM0.02m | 2:38PM0.02m | 2:30PM0.02m | 2:42PM0.02m | |||||||||||
Low Tide | 00:17AM0.00m | 10:39AM0.01m | 00:33AM0.00m | 10:05AM0.01m | 00:47AM0.00m | 1:05AM0.00m | 1:20AM0.00m | 1:51AM0.00m | ||||||||||||
— | — | 7:26 | — | — | 7:24 | — | — | 7:24 | — | — | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | |
5:30 | — | — | 5:30 | — | — | 5:31 | — | — | 5:31 | — | — | 5:32 | — | — | 5:34 | — | — | 5:34 | — | |
mm | — | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — | — | — | — | 2 | 1 | — | — |
Temp °C | 14 | 16 | 14 | 15 | 15 | 15 | 15 | 15 | 13 | 12 | 12 | 11 | 12 | 12 | 12 | 12 | 14 | 13 | 13 | 13 |
Feels °C | 10 | 12 | 10 | 12 | 12 | 12 | 13 | 11 | 7 | 6 | 6 | 5 | 6 | 7 | 7 | 6 | 9 | 8 | 8 | 9 |
Swell 1 Height (m) Direction Period (s) | SW 18 | SW 16 | SW 15 | SW 15 | SW 14 | SW 13 | SW 12 | SW 12 | SW 14 | WSW 10 | SSW 14 | SW 14 | SSW 15 | SSW 15 | SSW 15 | SW 14 | SW 14 | SW 13 | SSW 13 | SW 12 |
252 | 376 | 432 | 472 | 787 | 437 | 306 | 209 | 72 | 445 | 1193 | 1303 | 1655 | 1288 | 1001 | 752 | 556 | 501 | 444 | 358 | |
Swell 2 Height (m) Direction Period (s) | WSW 12 | WNW 7 | — | — | W 5 | — | — | SW 15 | — | SW 15 | — | — | — | — | — | — | — | SSW 13 | S 18 | — |
98 | 15 | — | — | 5 | — | — | 34 | — | 55 | — | — | — | — | — | — | — | 96 | 6 | — | |
Swell 3 Height (m) Direction Period (s) | W 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | N 3 | N 3 | NNW 3 | WNW 4 | — | — | WNW 3 | W 5 | SW 6 | SW 11 | SW 5 | — | — | — | W 4 | WSW 4 | WSW 5 | — | WSW 12 | — |
2 | 1 | 2 | 7 | — | — | 1 | 16 | 156 | 563 | 31 | — | — | — | 7 | 16 | 19 | — | 131 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 17 | 14 | 17 | 14 | 14 | 14 | 13 | 14 | 731 | 742 | 722 | 1187 | 1194 | 59 | 499 | 499 | 499 | 1186 | 1197 | 11 |
Best forecast wave conditions in Yorke Peninsula | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
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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.










