Surf Forecasts:
Trespassers surf forecast from 3 Sep 2026:
- Best quality surf: Thursday 3 Sep, 9PM (local time) - 7ft (2.2m), 15s period, SW swell with glassy winds.
- Most powerful swell: Wednesday 9 Sep, 3PM (local time) - 7.5ft (2.3m), 19s period, SSW swell with 3,951 kJ wave energy.
- Next surfable swell (1★+): Thursday 3 Sep, 9PM (local time) - 7ft (2.2m), 15s 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 Thursday (Sep 03) at 9PM. The primary swell is predicted to be 2.2m and 15s 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 2.3m 19s and forecast to arrive on Wednesday (Sep 09) at 3PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Monday (Sep 07) at 6PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Thu 3rd Sep) | 7ft (2.2m) 15s |
| Best Surf | 9PM (Thu 3rd Sep) | 7ft (2.2m) 15s |
| Most Powerful | 3PM (Wed 9th Sep) | 7.5ft (2.3m) 19s |
Table - best surf conditions forecast for Trespassers over the next 16 days.
The Lowdown
G’day, Rusty here.
Alright, look, we’ve got a bit of a wild ride ahead at Trespassers over this 16-day stretch. It’s a reef break that takes a SSW swell, and honestly, the first few days are a write-off. The water temp is sitting at 60°, which is about what you’d expect for this time of year, so no surprises there.
We don’t get anything worth paddling out for until Friday the 4th of September. The swell’s coming in at 7 ft from the SSW with a 16-second period – that’s proper groundswell energy, 1982 (moderate wave energy). The wind is a cross-offshore on the Friday morning, keeping things clean, though the size makes it a bit much for beginners. It’s a fairly consistent spot, so you’ll get waves, but it’s not the standout of the whole period.
Saturday the 5th is a total mess – onshore howling at 28 mph with a 8 ft swell. Forget it.
Now, here’s the real gem. Sunday the 6th of September morning is your best chance in the first week. The swell drops to 6 ft from the SW, period 13 seconds, energy at 1021 (moderate), but the wind is *glassy* – dead calm at 3 mph from the NNW. That’s what we live for. It’ll be clean as a whistle, but that 6 ft might still be a little punchy for beginners. The afternoon gets onshore, so get on it early.
Monday the 7th is a small drop to 3 ft, clean but weak. Tuesday the 8th afternoon looks okay with a 5 ft SSW swell and offshore wind, but nothing special.
The second week has a couple of standouts, but remember – it’s further out, so less certain. Wednesday the 9th of September afternoon brings a 8 ft SSW swell with a very long 19-second period, energy at 3951 (very strong). The wind is offshore, so the shape should be incredible. That’s expert territory though – over 8 ft it’s a no-go for the average surfer; this is right on the edge.
Tuesday the 15th of September morning looks like another glassy session. It’s 6 ft from the SSW, 17-second period, 1551 energy (moderate), and the wind is dead calm. That’s a chance for a clean, powerful wave at Trespassers. After that, the wind turns ugly again, and we get messy cross-onshore chop through the rest of the week.
Overall, if you’re after the best waves, circle Sunday the 6th of September morning and Tuesday the 15th of September morning on your calendar. The rest is mostly blown out or just average. Stay patient.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Fri morning. Very mild (max 18°C on Fri afternoon, min 12°C on Thu night). Winds increasing (calm on Thu night, strong winds from the W by Fri night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 13°C on Sun morning, min 10°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | |||||||||||||||
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) | SW 14 | SW 14 | SW 15 | SSW 16 | SSW 16 | SSW 15 | SW 15 | SW 12 | SW 14 | SW 13 | SW 14 | SW 14 | SW 13 | SW 13 | SW 19 | SSW 17 | SSW 16 | SSW 16 | SSW 21 | SSW 19 | SSW 18 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1536 | 1604 | 2120 | 1982 | 1699 | 1056 | 3062 | 1602 | 1494 | 1021 | 890 | 471 | 286 | 257 | 819 | 1607 | 1199 | 822 | 1410 | 3951 | 2546 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | cross-off | cross-off | cross-on | on | on | on | glassy | on | cross | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | off | off |
High Tide | 2:55PM0.02m | 1:32PM0.02m | 1:17PM0.02m | 1:36PM0.02m | 1:58PM0.02m | 2:19PM0.02m | 3:31AM0.01m | 2:38PM0.02m | 3:27AM0.01m | ||||||||||||
Low Tide | 11:30AM0.01m | 11:26PM-0.00m | 11:34PM-0.00m | 11:35PM0.00m | 11:24PM0.00m | 10:57PM0.00m | 10:30PM0.00m | 6:48AM0.01m | 10:12PM0.00m | ||||||||||||
 |  |  | |  |  |  |  |  | | | | | |  | | | | | | | |
 | 6:39 | — | — | 6:37 | — | — | 6:37 | — | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — |
 | — | 6:04 | — | — | 6:04 | — | — | 6:05 | — | — | 6:06 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — |
mm | 1 | — | — | 2 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 13 | 13 | 15 | 18 | 16 | 13 | 13 | 13 | 13 | 12 | 12 | 13 | 13 | 10 | 12 | 13 | 11 | 12 | 12 | 13 |
Feels °C | 10 | 9 | 11 | 10 | 14 | 12 | 4 | 6 | 8 | 10 | 9 | 8 | 7 | 7 | 5 | 8 | 8 | 6 | 6 | 6 | 9 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 15 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SW 14 | SW 13 | SW 14 | SW 14 | SW 13 | SW 13 | SW 19 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 19 | SSW 18 |
| kJ | 943 | 1604 | 2120 | 1982 | 1699 | 1056 | 256 | 142 | 1494 | 1021 | 890 | 471 | 286 | 257 | 819 | 1607 | 1199 | 822 | 1170 | 3951 | 2546 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SSW 20 | — | SW 15 | S 23 | SSW 21 | SW 21 | SW 13 | — | — | SSW 26 | SSW 21 | — | — |
| kJ | — | — | — | — | — | — | — | — | 37 | — | 174 | 11 | 45 | 212 | 238 | — | — | 66 | 1410 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | SW 22 | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 18 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 14 | WSW 14 | — | NNE 3 | NE 3 | W 5 | SW 15 | SW 12 | — | — | — | SSW 2 | SSE 3 | SE 4 | SE 4 | ESE 4 | ESE 4 | ESE 4 | ESE 4 | ESE 4 | ESE 4 |
| kJ | 1536 | 829 | — | 3 | 3 | 59 | 3062 | 1602 | — | — | — | 1 | 4 | 21 | 28 | 14 | 5 | 25 | 18 | 11 | 21 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 321 | 499 | 0 | 160 | 18 | 730 | 1095 | 1200 | 13 | 0 | 14 | 13 | 59 | 11 | 11 | 11 | 0 | 11 | 97 | 11 | 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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