Surf Forecasts:
Trespassers surf forecast from 24 Aug 2026:
- Best quality surf: Thursday 27 Aug, 6PM (local time) - 3.5ft (1.1m), 19s period, SW swell with cross-offshore winds.
- Most powerful swell: Monday 31 Aug, 3AM (local time) - 6ft (1.8m), 18s period, SSW swell with 1,966 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 3AM (local time) - 4.5ft (1.3m), 14s 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 Wednesday (Aug 26) at 3AM. The primary swell is predicted to be 1.3m and 14s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Trespassers in the next 16 days are 1.8m 18s and forecast to arrive on Monday (Aug 31) at 3AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Aug 29) at 3AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 26th Aug) | 4.5ft (1.3m) 14s |
| Best Surf | 6PM (Thu 27th Aug) | 3.5ft (1.1m) 19s |
| Most Powerful | 3AM (Mon 31st Aug) | 6ft (1.8m) 18s |
Table - best surf conditions forecast for Trespassers over the next 16 days.
The Lowdown
G'day, Rusty here. Let's get into what's cooking at Trespassers. This stretch is a bit of a slow starter, but there are some real gems if you're willing to wait and pick your days.
The first part of the week is grim. Tuesday the 25th has serious swell energy—over 2400 units—but it's all cross-onshore and lumpy, a total write-off. Wednesday and Thursday aren't much better, with cross or cross-onshore winds turning even the 3-foot (0.9m) swell into chop. It's a frustrating start.
The standout is Friday the 28th of August. That's your day. We get a solid 5-foot (1.6m) SSW groundswell with a long 16-second period and strong energy around 1400. The wind is a light NE, putting it cross-offshore, so the faces are clean and lined up. This is excellent surf for experienced surfers – it's got some push, so beginners should sit this one out. Morning is the best call.
Saturday the 29th and Sunday the 30th ease off but stay clean. Saturday morning has a gentle offshore breeze on a 3-foot (1.0m) SSW swell – small but tidy. Sunday afternoon on the 30th is a lovely little session: glassy conditions, a 4-foot (1.1m) SSW groundswell with a very long 19-second period, and nearly 1000 energy units. That long period will make the reef at Trespassers really stand up, but it might get a bit walled-off for beach breaks. For this spot, it's a beauty.
There's a lull through Monday the 31st and Tuesday the 1st of September, with cross winds making things messy again. Still, a 6-foot (1.7m) SSW swell on Monday morning carries some heavy energy (1700), just dirty.
The next solid window is Wednesday the 2nd of September. Another clean morning with a gentle ENE offshore breeze, a nice 4-foot (1.2m) SSW swell at 15 seconds, and 685 energy units. It's not huge, but it'll be lined up and fun. That's your second-best option.
After that, the second week goes downhill. There's big energy around the 5th and 6th of September, with 6-foot to 8-foot (1.9m to 2.4m) SW swells and energy over 3000, but it's all onshore or howling cross-onshore. That's for experts only, and even then, it'll be messy. The afternoon of the 4th of September might offer a brief clean-up with a cross-offshore breeze on a 4-foot (1.3m) SSW swell, but it's a short window.
Bottom line: Friday the 28th of August is your best bet, with Sunday the 30th and Wednesday the 2nd as solid runners-up. Don't hold your breath for the second week; the ocean's got too much wind in its hair.
Rusty.
Short Range ForecastHeavy rain (total 32mm), heaviest during Mon night. Very mild (max 17°C on Thu afternoon, min 12°C on Tue night). Winds decreasing (fresh winds from the SSW on Mon night, calm by Tue night). | Days 5-7 Weather SummaryMostly dry. Very mild (max 18°C on Thu night, min 16°C on Fri morning). Wind will be generally light. | ||||||||||||||||||
Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | ||||||||||||||
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 13 | SSW 16 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 14 | SW 19 | SW 18 | SW 16 | SW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SSW 20 | SSW 19 | SSW 18 |
Wave Graph  | |||||||||||||||||||
 kJ | 458 | 1650 | 1220 | 648 | 444 | 331 | 139 | 313 | 546 | 1781 | 1436 | 1115 | 631 | 401 | 257 | 170 | 253 | 913 | 1898 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross | cross | cross-on | cross-off | cross | cross | cross-off | cross-off | cross-off | off | off | off | off | off | glassy | off |
High Tide | 2:56AM0.01m | 2:43PM0.02m | 3:00AM0.01m | 3:00PM0.02m | 3:20AM0.01m | 3:14PM0.02m | 3:45AM0.01m | 3:26PM0.02m | 4:13AM0.01m | 3:34PM0.02m | 4:39AM0.01m | 3:48PM0.02m | |||||||
Low Tide | 11:01PM0.00m | 6:33AM0.00m | 10:36PM0.00m | 7:22AM0.00m | 10:26PM0.00m | 8:00AM0.00m | 10:24PM0.00m | 8:29AM0.00m | 10:29PM0.00m | 9:06AM0.01m | 10:35PM0.00m | 9:35AM0.01m | 10:44PM0.00m | ||||||
 |  |  |  | | | | | |  |  | | | | | | | | | |
 | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:46 | — | — | 6:45 | — | — |
 | — | — | 5:57 | — | — | 5:58 | — | — | 5:59 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — |
mm | 32 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 13 | 13 | 13 | 12 | 13 | 14 | 17 | 18 | 16 | 17 | 18 | 18 | 18 | 17 | 17 | 17 | 16 |
Feels °C | 8 | 7 | 7 | 9 | 10 | 10 | 9 | 9 | 13 | 14 | 13 | 14 | 14 | 14 | 15 | 14 | 15 | 16 | 13 |
Swell 1 Height (m) Direction Period (s) | E 4 | SW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SW 12 | SW 14 | SW 14 | SW 18 | SW 16 | SW 16 | SW 15 | SW 14 | SW 13 | SW 13 | SSW 12 | SSW 19 | SSW 18 |
| kJ | 3 | 803 | 606 | 648 | 444 | 331 | 139 | 313 | 459 | 1781 | 1436 | 1115 | 631 | 401 | 257 | 170 | 127 | 913 | 1898 |
Swell 2 Height (m) Direction Period (s) | SW 18 | SE 5 | — | — | SSW 18 | SW 16 | SSW 15 | SW 21 | SW 19 | — | — | — | — | — | SW 23 | SW 21 | SSW 20 | SSW 12 | — |
| kJ | 111 | 1 | — | — | 31 | 41 | 86 | 116 | 546 | — | — | — | — | — | 21 | 116 | 253 | 55 | — |
Swell 3 Height (m) Direction Period (s) | ENE 4 | — | — | — | — | — | SW 24 | — | NE 4 | — | — | — | — | — | S 20 | — | ESE 3 | — | — |
| kJ | 3 | — | — | — | — | — | 22 | — | 2 | — | — | — | — | — | 8 | — | 1 | — | — |
Wind waves Height (m) Direction Period (s) | SSW 13 | SSW 16 | SW 14 | — | — | — | — | N 3 | NNW 4 | — | — | — | ESE 3 | E 3 | E 3 | ESE 2 | E 3 | — | — |
| kJ | 458 | 1650 | 1220 | — | — | — | — | 4 | 4 | — | — | — | 1 | 2 | 1 | 1 | 1 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 138 | 534 | 59 | 11 | 14 | 14 | 0 | 19 | 19 | 0 | 0 | 0 | 0 | 0 | 0 | 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.
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