Surf Forecasts:
Trespassers surf forecast from 9 Jul 2026:
- Best quality surf: Wednesday 15 Jul, 12AM (local time) - 6ft (1.9m), 16s period, SSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 14 Jul, 3AM (local time) - 7.5ft (2.3m), 17s period, SSW swell with 3,156 kJ wave energy.
- Next surfable swell (1★+): Thursday 9 Jul, 6PM (local time) - 4.5ft (1.3m), 16s 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 09) at 6PM. The primary swell is predicted to be 1.3m and 16s 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 2.3m 17s and forecast to arrive on Tuesday (Jul 14) at 3AM. Winds are predicted to be 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 Wednesday (Jul 15) at 9PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6PM (Thu 9th Jul) | 4.5ft (1.3m) 16s |
| Best Surf | 12AM (Wed 15th Jul) | 6ft (1.9m) 16s |
| Most Powerful | 3AM (Tue 14th Jul) | 7.5ft (2.3m) 17s |
Table - best surf conditions forecast for Trespassers over the next 16 days.
Alright folks, Rusty here. Let’s break down what’s coming for the next couple of weeks.
It’s gonna be a slow burn, but the best window is Wednesday, July 15th and Thursday, July 16th. Before that, you’re looking at a long stretch of junk from Thursday afternoon, July 9th, right through Tuesday, July 14th. That’s nearly a week of onshore winds and messy, lumpy surf. The swell gets big, over 7ft at times, but with strong westerly winds, it’s a total mess. More of a kite session than a paddle session.
The real gem is the morning of Wednesday, July 15th at Trespassers. This is a reef break, so it can handle the size. We’ve got a clean 6ft SSW groundswell with a long 16-second period—that’s a lot of power. The wind is light offshore from the ENE, so the surface will be glassy and the waves will be real clean. The combined swell energy is strong (1305), and the water temp is sitting at 59°, which is about average for this time of year. This is the standout session, period. It’s an advanced spot, so keep the beginners on the sand.
That clean spell carries into Thursday, July 16th, with a smaller 3ft SSW swell, but the wind stays light and offshore. The energy drops to moderate (401), but the conditions will still be fun and clean. If Wednesday is too crowded for you, Thursday morning is a solid backup.
After that, the wind goes sideways again on Friday, July 17th, and by Saturday, July 18th, it’s back to cross-onshore junk. The second week looks pretty grim, with dropping swell and persistent onshore winds. The last week of the outlook is flat and poor.
So, don’t waste your time until that Wednesday, July 15th morning. That’s the one to mark on the calendar. Get out there early for the cleanest lines.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Sat morning. Very mild (max 15°C on Thu morning, min 12°C on Sat afternoon). Winds increasing (light winds from the NNE on Thu afternoon, strong winds from the WSW by Sat morning). | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Sun afternoon. Very mild (max 15°C on Sun morning, min 11°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||
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 15 | SSW 18 | SW 16 | SW 16 | SW 15 | SW 14 | WSW 8 | SW 10 | SW 12 | SW 13 | SW 13 | SW 14 | SW 16 | SW 14 | SW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SW 15 | SW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 443 | 486 | 906 | 773 | 566 | 412 | 634 | 1448 | 1878 | 1810 | 1417 | 1471 | 1983 | 1752 | 2778 | 3046 | 2318 | 1721 | 1305 | 967 | 614 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross-on | cross | cross-on | on | cross-on | on | on | on | cross-on | on | on | cross-on | on | cross-on | cross-off | off | off | off |
High Tide | 2:51PM0.02m | 2:29PM0.02m | 2:43PM0.02m | 3:07PM0.02m | 3:29PM0.03m | 2:26AM0.00m | 4:01PM0.03m | 2:56AM0.00m | 4:24PM0.03m | ||||||||||||
Low Tide | 2:42AM0.00m | 3:20AM0.00m | 4:58AM0.00m | 6:23AM0.00m | 00:51AM0.00m | 7:20AM0.00m | 00:37AM0.00m | 8:06AM0.00m | 00:28AM0.00m | ||||||||||||
 |  |  | | | |  | |  | |  |  | | | | | |  | | | | |
 | 7:30 | — | — | 7:30 | — | — | 7:28 | — | — | 7:28 | — | — | 7:28 | — | — | 7:28 | — | — | 7:28 | — | — |
 | — | 5:23 | — | — | 5:24 | — | — | 5:24 | — | — | 5:25 | — | — | 5:25 | — | — | 5:27 | — | — | 5:28 | — |
mm | — | — | — | — | — | — | 3 | — | — | — | 1 | 2 | 2 | — | — | — | 1 | — | — | — | — |
Temp °C | 15 | 15 | 14 | 14 | 14 | 14 | 14 | 13 | 14 | 15 | 14 | 14 | 14 | 15 | 15 | 14 | 14 | 13 | 11 | 11 | 10 |
Feels °C | 12 | 13 | 11 | 9 | 10 | 10 | 6 | 4 | 7 | 9 | 8 | 8 | 8 | 9 | 10 | 9 | 10 | 10 | 7 | 7 | 6 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 18 | SW 16 | SW 16 | SW 15 | SW 14 | SSW 14 | — | — | SSW 13 | SW 13 | SW 14 | SW 16 | SW 14 | SW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SW 15 | SW 14 |
| kJ | 443 | 486 | 906 | 773 | 566 | 412 | 134 | — | — | 590 | 1417 | 1471 | 1983 | 1752 | 2778 | 3046 | 2318 | 1721 | 1305 | 967 | 614 |
Swell 2 Height (m) Direction Period (s) | SW 20 | SW 14 | — | WNW 4 | — | — | — | — | — | — | — | SSW 18 | SSW 20 | SW 20 | SSW 18 | — | W 8 | — | — | — | — |
| kJ | 97 | 297 | — | 4 | — | — | — | — | — | — | — | 360 | 149 | 15 | 126 | — | 105 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SSW 20 | NE 4 | — | — | — | — | — | — | — | — | — | SSW 22 | — | — | — | — | — | — | — | — | — |
| kJ | 38 | 2 | — | — | — | — | — | — | — | — | — | 45 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | NW 4 | NW 4 | WNW 5 | WSW 8 | SW 10 | SW 12 | SW 13 | WSW 5 | W 6 | SW 15 | SW 14 | W 8 | W 8 | — | — | ESE 2 | E 3 | ESE 3 |
| kJ | — | — | — | 4 | 14 | 42 | 634 | 1448 | 1878 | 1810 | 62 | 52 | 1046 | 886 | 182 | 157 | — | — | 1 | 1 | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 14 | 0 | 14 | 14 | 67 | 732 | 1040 | 1184 | 1193 | 1193 | 160 | 1034 | 1269 | 748 | 161 | 59 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Yorke Peninsula | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
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.
Nearest