Surf Forecasts:
Trespassers surf forecast from 7 Sep 2026:
- Best quality surf: Tuesday 8 Sep, 6AM (local time) - 5ft (1.5m), 18s period, SSW swell with offshore winds.
- Most powerful swell: Wednesday 9 Sep, 12PM (local time) - 7ft (2.2m), 18s period, SSW swell with 3,028 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 9PM (local time) - 2.5ft (0.8m), 19s 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 Monday (Sep 07) at 9PM. The primary swell is predicted to be 0.8m and 19s period with a secondary swell of 0.9m and 14s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Trespassers in the next 16 days are 2.2m 18s and forecast to arrive on Wednesday (Sep 09) at 12PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 5s period and expected on Wednesday (Sep 09) at 12PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Mon 7th Sep) | 2.5ft (0.8m) 19s |
| Best Surf | 6AM (Tue 8th Sep) | 5ft (1.5m) 18s |
| Most Powerful | 12PM (Wed 9th Sep) | 7ft (2.2m) 18s |
Table - best surf conditions forecast for Trespassers over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it. We’ve got a solid run of surf coming up at Trespassers, a reef break that’s only for the advanced crew. The water temp is sitting at 59°, which is pretty much bang on average for this time of year, so no need to dig out the extra thick rubber just yet.
The first real action kicks off Monday morning, September 7th. It’s not massive, but a clean 3ft SW swell with a period of 13 seconds from the cross-off SE breeze will have you grinning. The energy is moderate (327) and the conditions are clean. It’s a gentle start, but it’s a start.
Now, the standout is Tuesday morning, September 8th. We’re talking 5ft of SSW groundswell, a period of 17 seconds, and glassy conditions. That’s a long-period groundswell pushing moderate-to-strong wave energy (1352). This is prime for an advanced reef like Trespassers – the sets will have real power, and the paddle out will be manageable between lulls. The wind is dead flat. This is the best on offer.
Tuesday afternoon, the wind swings onshore and the quality drops out. Wednesday sees the swell push up to 7ft, which is getting into the expert-only zone, but the 19 mph cross-off wind keeps it clean. The energy is very strong (3001 and 2894). Thursday morning, September 10th, is another cracker: 6ft SSW swell, 16-second period, offshore winds, and moderate offshore conditions. That’s a solid, powerful wave for the experienced.
Friday, September 11th, sees the swell drop back to 4ft, but the afternoon turns glassy again with a 16-second period – clean and user-friendly for the advanced crew. Saturday is a bit tricky with lumpy cross-chop, and Sunday, September 13th, is a write-off with onshore winds and poor surf.
The second week starts quietly. There’s a gap of a few days of poor quality until Tuesday, September 15th, where the morning offers clean offshore conditions on 4ft, and the afternoon goes glassy with a 5ft SW swell. Then Wednesday and Thursday, September 16th and 17th, hold at 5ft and 4ft of SSW swell, but the wind is cross-off and the quality is marginal. By Friday, September 18th, it’s blown out.
The last real standout in the window is Monday, September 21st. A 7ft SSW swell, 15-second period, solid energy (2332 and 2205), and cross-off winds. It’s a promising long-range call, but keep an eye on it. Tuesday, September 22nd, finishes strong with a 7ft SSW swell, 17-second period, and clean cross-off conditions – another one for the experts only.
So, overall: Tuesday morning, September 8th, is your best bet. Glassy, long-period groundswell, clean. For the long-range, Monday, September 21st, looks like a solid option. This is a reef, so it’s only for the advanced. If you’re not in that league, sit this one out.
Rusty.
Short Range ForecastMostly dry. Very mild (max 14°C on Mon morning, min 10°C on Mon night). Winds increasing (calm on Tue morning, fresh winds from the SSE by Tue night). | Days 4-6 Weather SummaryMostly dry. Warm (max 22°C on Sat night, min 10°C on Thu morning). Wind will be generally light. | ||||||||||||||||||||
Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | |||||||||||||||
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 13 | SW 14 | SW 19 | SSW 17 | SW 16 | SSW 16 | SSW 19 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 16 | SSW 16 | SW 15 | SSW 18 | SSW 16 | SW 16 | SW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 282 | 264 | 828 | 1352 | 1302 | 1433 | 3001 | 2894 | 2263 | 1713 | 1273 | 730 | 576 | 749 | 828 | 649 | 503 | 390 | 469 | 367 | 322 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | glassy | cross-on | cross-off | cross-off | cross-off | cross-off | off | off | off | off | glassy | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on |
High Tide | 1:58PM0.02m | 2:19PM0.02m | 3:31AM0.01m | 2:38PM0.02m | 3:27AM0.01m | 2:54PM0.02m | 3:44AM0.01m | 3:06PM0.02m | 4:03AM0.01m | 3:15PM0.02m | 4:29AM0.02m | 3:21PM0.02m | |||||||||
Low Tide | 10:57PM0.00m | 10:30PM0.00m | 6:48AM0.01m | 10:12PM0.00m | 7:49AM0.01m | 10:01PM0.00m | 8:36AM0.01m | 9:57PM0.00m | 9:18AM0.01m | 9:54PM0.00m | 9:56AM0.01m | 10:01PM-0.00m | |||||||||
 |  |  | |  |  | | | | | | | | | | | | | | | | |
 | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | 6:30 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — |
 | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:08 | — | — | 6:08 | — | — | 6:09 | — | — | 6:10 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 11 | 12 | 12 | 12 | 13 | 12 | 10 | 12 | 12 | 12 | 14 | 15 | 16 | 18 | 20 | 22 | 20 | 23 | 21 |
Feels °C | 11 | 11 | 9 | 10 | 7 | 6 | 5 | 6 | 4 | 7 | 7 | 9 | 12 | 14 | 13 | 14 | 17 | 18 | 14 | 18 | 19 |
Swell 1 Height (m) Direction Period (s) | SW 13 | SW 14 | SW 19 | SSW 17 | SSW 16 | SSW 16 | SSW 19 | SSW 18 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 16 | SSW 16 | SSW 16 | SW 15 | SSW 18 | SSW 16 | SW 16 | SW 15 |
| kJ | 282 | 264 | 828 | 1352 | 539 | 469 | 3001 | 2894 | 2263 | 1713 | 1273 | 730 | 576 | 749 | 828 | 649 | 503 | 390 | 469 | 367 | 322 |
Swell 2 Height (m) Direction Period (s) | SSW 21 | SSW 21 | SW 13 | — | — | — | — | — | — | — | S 26 | S 25 | ESE 4 | — | — | — | — | SW 14 | — | WSW 5 | W 7 |
| kJ | 45 | 170 | 238 | — | — | — | — | — | — | — | 13 | 13 | 5 | — | — | — | — | 158 | — | 9 | 39 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 5 | — | — | SW 8 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 9 |
Wind waves Height (m) Direction Period (s) | SSE 3 | SE 4 | SE 4 | — | SW 16 | SSW 16 | SSE 5 | SE 5 | SE 5 | ESE 4 | ESE 4 | ESE 4 | — | — | E 3 | NNE 3 | NNW 3 | NE 2 | NNW 4 | NNW 4 | — |
| kJ | 1 | 6 | 7 | — | 1302 | 1433 | 66 | 60 | 42 | 16 | 8 | 20 | — | — | 1 | 2 | 1 | 1 | 22 | 21 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 59 | 13 | 1221 | 1567 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 79 | 0 | 100 | 100 | 19 | 14 |
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