Trespassers Surf Break

Lat Long: 35.13° S 136.94° E

Trespassers Surf Forecast and Surf Report

Issued: 2 am 09 Sep 2026 (local time)

Forecast update in  hr  min

Today's Trespassers sea temperature is
15.1°C
0.6° 

Trespassers surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Trespassers surf forecast from 8 Sep 2026:

  • Best quality surf: Thursday 10 Sep, 3AM (local time) - 6.5ft (2.0m), 16s period, SSW swell with offshore winds.
  • Most powerful swell: Wednesday 9 Sep, 9AM (local time) - 7ft (2.1m), 19s period, SSW swell with 3,001 kJ wave energy.
  • Next surfable swell (1★+): Thursday 10 Sep, 3AM (local time) - 6.5ft (2.0m), 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 (Sep 10) at 3AM. The primary swell is predicted to be 2.0m and 16s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Trespassers in the next 16 days are 2.1m 19s and forecast to arrive on Wednesday (Sep 09) at 9AM. 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 9AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Thu 10th Sep)6.5ft (2.0m) 16s
Best Surf 3AM (Thu 10th Sep)6.5ft (2.0m) 16s
Most Powerful 9AM (Wed 9th Sep)7ft (2.1m) 19s

Table - best surf conditions forecast for Trespassers over the next 16 days.


The Lowdown

G’day surfers, Rusty here. Let’s get stuck into what the ocean’s got cooking for us.

The next week or so is a mixed bag of pulses and lulls, with the real standout action arriving next Monday. The opening days are rideable but nothing to write home about, as we ease into a rhythm of SSW groundswell. The water’s sitting at 59°, which is pretty much average for this time of year, so you won’t need the thickest suit, just the usual rubber.

First up, Trespassers on Wednesday the 9th. There’s decent size in the water, pushing 7ft, but a fresh SE cross-off breeze and a fair bit of energy (3001) make it a bit of a messy prospect. It’s clean, but the quality just isn’t there, and the tide looks questionable. Not the day to burn a sickie.

Thursday the 10th is where things start to tidy up. The swell drops a touch to around 6ft, but the wind swings ESE offshore, and the energy settles to 1555. This brings much cleaner conditions and the wave comment backs that up – it’s lining up for experienced surfers. Friday the 11th keeps that clean run going with gentle offshore breezes and a long-period 15-16s SSW swell at 4ft. Combined energy is down a bit (674), so expect a few more lulls between sets, but the shape should be sweet.

The weekend is a step down. Saturday the 12th has a bit of a cross-off breeze that kills some of the magic, and Sunday the 13th sees the swell drop right off and the wind turn onshore, turning the place into a mush burger. We'll see a couple of days of small, messy surf through Monday the 14th and Tuesday the 15th sees a slight bump back up to 6ft, but the wind is still up and down.

Now, here’s where it gets interesting. The standout window is Wednesday the 16th and then again next Monday the 21st.

That Wednesday the 16th, the ocean cleans right up. The swell holds at 6ft from the SSW with a 16-second period, but the wind drops to almost nothing – glassy conditions on that afternoon, with the energy at 1373. That's clean, lined-up reef surf for those who know what they're doing. This is the pick of the first week.

Thursday and Friday the 17th and 18th fade again, and we get some onshore junk over the weekend, with a fresh N breeze on the 19th making it a complete write-off. The surf goes flat.

Then, the big one for the second week arrives on Monday the 21st of September. We get a proper pulse of long-period SSW swell, jumping to 8ft with an 18-second period and the combined energy cranking up to a hefty 3825. The wind is light offshore in the morning, making it absolutely pumping and clean at Trespassers. This is the one to circle. It’s solid, powerful, and way too much for the beginners.

After that, the swell backs off through Tuesday and Wednesday, but holds at a fun 5-7ft. Conditions get a bit messier with cross-onshore breezes. Then on Thursday the 24th, the energy just explodes, hitting 7392 with 8ft of SW swell. But that one’s a tricky one, as the wind is going to be up a bit and it’ll be a powerful, heavy slab – that’s strictly for the experienced crew in the water who can handle a proper beating.

So, to wrap it up: the first week starts messy, turns clean for Thursday and Friday, then falls apart. The best bets are Wednesday the 16th for a glassy, clean session, and Monday the 21st for a big, powerful, standout day. Just keep an eye on the tides for that Monday. Stay stoked.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 16°C on Fri night, min 9°C on Wed night). Winds decreasing (fresh winds from the SE on Wed morning, light winds from the ENE by Fri afternoon).

Days 4-6 Weather Summary

Mostly dry. Warm (max 20°C on Sat night, min 10°C on Mon night). Wind will be generally light.

Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
2
4
3
3
3
3
3
2
3
1
0
0
0
0
0
1
2
3
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.1
SSW
19
2.2
SSW
18
2.1
SSW
16
1.7
SSW
16
1.6
SSW
16
1.3
SSW
15
1.3
SSW
15
1.3
SSW
16
1.3
SSW
16
1.3
SSW
16
1.2
SW
16
0.9
SW
15
0.9
SSW
16
0.9
SW
16
0.9
SW
15
0.6
SW
14
1.1
SW
18
1.1
SW
13
1.7
SSW
14
1.7
SSW
14
1.6
SW
14
Wave Graph
Metric surfscale
Energy kJ
3001
2894
2263
1555
1273
740
674
870
915
822
702
309
458
362
314
162
799
369
1193
1065
920
Wind (km/h)
35
SE
30
SE
25
ESE
25
ESE
20
ESE
20
ESE
15
E
5
ENE
15
ENE
15
NNE
15
NNE
20
NNE
25
N
15
WSW
10
WSW
20
WNW
25
SW
20
SSE
20
ESE
10
ESE
15
E
Wind State
cross-off
cross-off
cross-off
off
off
off
off
off
off
cross-off
cross-off
cross-off
cross
on
cross-on
on
cross-on
cross-off
cross-off
cross-off
off
High Tide
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
5:01AM0.02m
3:19PM0.02m
5:27AM0.02m
3:22PM0.01m
Low Tide
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
10:30AM0.01m
10:15PM-0.00m
10:59AM0.01m
10:29PM-0.00m
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:30
6:28
6:26
6:26
6:24
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:07
6:08
6:08
6:09
6:10
6:12
6:12
 mm
Temp °C
12
11
10
11
12
12
15
15
16
17
19
20
19
18
15
15
15
12
12
13
10
Feels °C
4
4
4
6
8
8
12
13
13
12
15
15
15
16
12
11
11
8
9
10
6
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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