
Surf Forecasts:
Trespassers surf forecast from 29 Jul 2026:
- Best quality surf: Tuesday 4 Aug, 12AM (local time) - 4.5ft (1.3m), 13s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 29 Jul, 12PM (local time) - 6.5ft (2.0m), 15s period, SSW swell with 1,739 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 9AM (local time) - 4ft (1.2m), 13s period with SSW 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 (Jul 30) at 9AM. The primary swell is predicted to be 1.2m and 13s period with a secondary swell of 0.5m and 8s. 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 2.0m 15s and forecast to arrive on Wednesday (Jul 29) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Saturday (Aug 01) at 9PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Thu 30th Jul) | 4ft (1.2m) 13s |
| Best Surf | 12AM (Tue 4th Aug) | 4.5ft (1.3m) 13s |
| Most Powerful | 12PM (Wed 29th Jul) | 6.5ft (2.0m) 15s |
Table - best surf conditions forecast for Trespassers over the next 16 days.
The Lowdown
Right then, let’s talk about Trespassers. This is a solid advanced reef set-up, and it’s going to see a lot of action over the next couple of weeks, but the timing is everything. The water’s sitting at 59°, which is pretty much what you’d expect for this time of year, nothing weird going on there.
We start off on Wednesday the 29th with a bit of a shrug. The swell’s there, a decent 7ft from the SSW with a very long 16-second period, and the combined energy is strong at 2469 – that’s proper groundswell. But the wind is cross-on from the SSW at 9 mph, making it choppy. The afternoon cleans up a fraction but is still far from good. Thursday the 30th is where it starts to turn. We’ve got a drop in size to 4ft, still from the SSW, period dropping to 13 seconds, but the energy is moderate at 497. The morning has clean conditions with a light SE cross-off breeze at 3 mph. Then the afternoon goes glassy, with a 4ft SW swell and a 13-second period. That is the standout window. Clean, glassy conditions on a reef break with a long-period swell – that’s going to be some tidy, lined-up surfing. It’s not huge, but the quality is there. Keep in mind it’s an advanced spot, so it’s not for beginners anyway.
Friday the 31st stays small, 3ft to 2ft, with clean cross-off breezes. Surfable for sure, but not the highlight of the run.
Then we hit a wall. From Saturday the 1st of August right through to Wednesday the 13th of August, it’s a long, ugly stretch. The wind gets nasty – strong cross-shore, onshore, and some proper gale-force stuff – and the swell direction and period create a mess. The swell sizes bounce between 3ft and 12ft, but the wind comment for most of these is “poor surf conditions” or “marginal.” The 12ft on the 9th of August is a big swell, but with a 16 mph cross-wind and a short 12-second period, it’s just a lumpy, blown-out nightmare. The combined energy is very strong (3172), but the wind kills it. Do not paddle out for those days unless you’ve got a kite. The reef set-up will be handling that energy, but the surface will be shocking.
The only flicker in that wasteland is on Tuesday the 5th of August. A 4ft SSW swell, with a 17-second period (very long), combined energy of 875 (moderate), and a cross-off wind. It’s listed as marginal, but that long period groundswell on a reef can be clean even with a bit of wind. It’s a gamble, but for the crew who know the spot, it might be the only session in that whole ten-day gap.
So, the best on offer is Thursday the 30th of July. The morning is clean cross-off, the afternoon is flat glass. Swell is 4-4ft, 13-second period, SSW-SW. That is the one to circle.
Rusty.
Short Range ForecastMostly dry. Very mild (max 13°C on Thu afternoon, min 12°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun morning. Very mild (max 14°C on Sat night, min 12°C on Sat morning). Winds decreasing (fresh winds from the W on Sun morning, calm by Mon night). | ||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | |||||||||||||||
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 | SSW 15 | SSW 14 | SSW 13 | SW 13 | SW 13 | SSW 13 | SW 14 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | SSW 20 |
Wave Graph | |||||||||||||||||||||
2178 | 1488 | 845 | 465 | 394 | 249 | 215 | 189 | 276 | 742 | 1107 | 1005 | 657 | 584 | 952 | 1203 | 1019 | 560 | 316 | 305 | 490 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | on | on | cross-on | cross-on | cross-on | cross-off | off | glassy | cross-off |
High Tide | 3:53PM0.02m | 3:34AM0.01m | 4:03PM0.02m | 4:03AM0.01m | 4:21PM0.02m | 4:39AM0.01m | 4:32PM0.02m | 5:23AM0.01m | 4:40PM0.02m | 6:06AM0.01m | 4:45PM0.02m | 6:58AM0.01m | 4:39PM0.02m | ||||||||
Low Tide | 11:18PM0.00m | 8:40AM0.00m | 11:23PM0.00m | 9:07AM0.00m | 11:26PM0.00m | 9:34AM0.00m | 11:41PM0.00m | 9:59AM0.01m | 11:53PM0.00m | 10:22AM0.01m | 00:02AM0.00m | 10:41AM0.01m | 00:19AM0.00m | ||||||||
7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | |
— | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:38 | — | — | 5:39 | — | — | 5:40 | — | — | 5:42 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — |
Temp °C | 12 | 12 | 12 | 12 | 13 | 13 | 12 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 11 |
Feels °C | 8 | 7 | 9 | 10 | 11 | 10 | 8 | 10 | 8 | 7 | 7 | 9 | 5 | 6 | 6 | 9 | 8 | 8 | 9 | 9 | 8 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 15 | SSW 14 | SSW 13 | SW 13 | SW 13 | SSW 13 | SW 14 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | SSW 20 |
2178 | 1488 | 845 | 465 | 394 | 249 | 215 | 189 | 276 | 742 | 1107 | 1005 | 657 | 584 | 952 | 1203 | 1019 | 560 | 316 | 305 | 490 | |
Swell 2 Height (m) Direction Period (s) | SW 16 | SW 15 | SW 14 | W 8 | — | SW 22 | SSW 21 | SSW 20 | SSW 13 | SW 21 | SW 20 | WSW 7 | WSW 6 | SW 20 | — | — | — | SSW 18 | SSW 16 | SW 22 | SW 14 |
291 | 217 | 149 | 32 | — | 20 | 44 | 149 | 147 | 18 | 98 | 4 | 13 | 61 | — | — | — | 123 | 102 | 118 | 206 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | SW 22 | — | — | — | — | — | — | ENE 4 | NE 5 | — | — | — | — | SW 24 | SW 21 | — |
— | — | — | — | — | 19 | — | — | — | — | — | — | 2 | 4 | — | — | — | — | 22 | 162 | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | NNE 2 | — | N 5 | NW 4 | N 4 | NW 5 | WSW 5 | SW 6 | — | — | — | — | — | — |
— | — | — | — | — | — | — | 1 | — | 11 | 8 | 9 | 51 | 81 | 38 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 17 | 553 | 13 | 0 | 0 | 0 | 0 | 0 | 18 | 100 | 100 | 100 | 730 | 546 | 499 | 13 | 256 | 0 | 0 | 0 | 0 |
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.










