Surf Forecasts:
Trespassers surf forecast from 23 Jul 2026:
- Most powerful swell: Wednesday 29 Jul, 6AM (local time) - 7ft (2.1m), 16s period, SSW swell with 2,257 kJ wave energy.
Best Forecast Surf Conditions for Trespassers this week:
The most powerful waves expected at Trespassers in the next 16 days are 2.1m 16s and forecast to arrive on Wednesday (Jul 29) at 6AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Wednesday (Jul 29) at 3PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6AM (Wed 29th Jul) | 7ft (2.1m) 16s |
Table - best surf conditions forecast for Trespassers over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it.
To be honest, the next week and a half is a bit of a grind. We’ve got a long stretch of poor surf quality at Trespassers, with cross-onshore winds and chop making it a tough watch. The first real, clean session doesn’t show up until Saturday, the 1st of August.
The standout window is that Saturday morning, the 1st of August. We’re looking at a clean, glassy session with a 2ft swell from the SSW. The wind is dead calm, completely glassy, which is a rare treat. The period is a very long 21 seconds, so this is pure groundswell – it’ll have heaps of energy (combined energy of 739), and the waves will be well-shaped and powerful. This is a quality reef break, but keep in mind that a long-period swell like this can break a bit straight at some spots, and it’s a secret spot that’s “fairly consistent” and “sometimes” has crowds, so you might have a few others in the water. For a more advanced crew, this is the best on offer.
The water temperature is about 59°F, which is basically normal for this time of year, so no surprises there.
The following week gets a bit more interesting, but it’s less certain. Thursday the 6th of August morning has a big 8ft swell from the SSW (combined energy of 6034), but the wind is light cross-on, so it’s marginal. This is only for experts at that size. Friday the 7th gets a blast of fresh cross-offshore wind, but it’s a much smaller 4ft, so it’ll be clean but not as powerful.
The 1st of August is your best bet. The rest of the fortnight is a waiting game.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Fri night. Very mild (max 14°C on Sat morning, min 11°C on Thu afternoon). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Mon night. Very mild (max 15°C on Mon afternoon, min 10°C on Tue night). Winds increasing (light winds from the WNW on Sun morning, strong winds from the SW by Tue afternoon). | ||||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | |||||||||||||||
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 14 | SSW 15 | SSW 16 | SSW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 13 | WSW 10 | WSW 11 | SW 15 | SW 14 | SSW 16 | SSW 15 | SSW 14 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1244 | 1571 | 1379 | 1069 | 857 | 581 | 488 | 326 | 282 | 192 | 185 | 153 | 198 | 386 | 378 | 543 | 1958 | 1533 | 2049 | 1356 | 791 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross-on | cross-on | on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross | cross | cross | cross |
High Tide | 2:38PM0.02m | 2:30PM0.02m | 2:42PM0.02m | 2:59PM0.02m | 2:07AM0.00m | 3:17PM0.02m | 2:36AM0.01m | 3:36PM0.02m | 3:04AM0.01m | 3:53PM0.02m | |||||||||||
Low Tide | 1:20AM0.00m | 1:51AM0.00m | 5:03AM0.00m | 00:09AM0.00m | 6:40AM0.00m | 11:30PM0.01m | 7:33AM0.00m | 11:19PM0.00m | 8:09AM0.00m | 11:18PM0.00m | |||||||||||
 |  |  | | |  |  | |  |  | | | | |  |  | |  | | | | |
 | 7:24 | — | — | 7:22 | — | — | 7:22 | — | — | 7:22 | — | — | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — |
 | — | 5:32 | — | — | 5:34 | — | — | 5:34 | — | — | 5:35 | — | — | 5:36 | — | — | 5:36 | — | — | 5:37 | — |
mm | — | — | — | — | — | 2 | 2 | — | — | — | — | — | — | — | 2 | 1 | 2 | — | — | — | — |
Temp °C | 12 | 12 | 12 | 12 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 15 | 14 | 14 | 12 | 10 | 10 | 11 | 11 |
Feels °C | 6 | 6 | 8 | 7 | 8 | 9 | 12 | 11 | 11 | 13 | 12 | 11 | 7 | 7 | 9 | 7 | 2 | 1 | 3 | 5 | 6 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 15 | SSW 16 | SSW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 11 | SW 11 | SW 11 | SW 13 | WSW 10 | SW 16 | SW 16 | SSW 15 | SSW 16 | SSW 15 | SSW 14 |
| kJ | 1244 | 411 | 1379 | 1069 | 857 | 581 | 488 | 326 | 282 | 192 | 185 | 153 | 198 | 386 | 378 | 255 | 421 | 174 | 2049 | 1356 | 791 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | SSW 13 | S 18 | SW 12 | SSW 16 | SW 15 | SW 15 | SSW 14 | SW 10 | SW 15 | SSW 16 | — | SW 15 | WSW 12 | SW 15 | SW 14 |
| kJ | — | — | — | — | — | — | 67 | 6 | 36 | 25 | 34 | 57 | 123 | 45 | 57 | 99 | — | 435 | 437 | 174 | 93 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | S 18 | — | SW 16 | SW 16 | — | — | — | — | — | — | — | — | SW 12 | S 16 | — |
| kJ | — | — | — | — | — | — | 6 | — | 10 | 10 | — | — | — | — | — | — | — | — | 66 | 5 | — |
Wind waves Height (m) Direction Period (s) | — | SSW 15 | — | — | WSW 3 | WSW 5 | W 5 | WSW 5 | — | — | — | — | N 3 | NW 4 | NW 5 | WSW 11 | SW 15 | SW 14 | S 3 | S 3 | SE 4 |
| kJ | — | 1571 | — | — | 7 | 17 | 37 | 25 | — | — | — | — | 2 | 21 | 44 | 543 | 1958 | 1533 | 6 | 6 | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 13 | 748 | 11 | 13 | 499 | 17 | 13 | 13 | 13 | 14 | 14 | 14 | 159 | 731 | 160 | 1184 | 731 | 946 | 978 | 13 | 13 |
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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