Trespassers Surf Break

Lat Long: 35.13° S 136.94° E

Trespassers Surf Forecast and Surf Report

Issued: 8 am 05 Sep 2026 (local time)

Forecast update in  hr  min

Today's Trespassers sea temperature is
15.0°C
0.5° 

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


Trespassers surf forecast from 5 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 9AM (local time) - 5ft (1.5m), 17s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 9 Sep, 12PM (local time) - 7ft (2.2m), 19s period, SSW swell with 3,376 kJ wave energy.
  • Next surfable swell (1★+): Monday 7 Sep, 12PM (local time) - 3ft (0.9m), 13s 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 Monday (Sep 07) at 12PM. The primary swell is predicted to be 0.9m and 13s period with a secondary swell of 0.4m and 21s. 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 2.2m 19s 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 1.1m 5s period and expected on Wednesday (Sep 09) at 9AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+)12PM (Mon 7th Sep)3ft (0.9m) 13s
Best Surf 9AM (Tue 8th Sep)5ft (1.5m) 17s
Most Powerful12PM (Wed 9th Sep)7ft (2.2m) 19s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s on the cards for the next couple of weeks.

The early part of the window is a write-off, I’m afraid. The first few days are junked up with howling onshore winds, and the swell is jumbled and messy. We’re looking at the 5th and 6th of September being a total loss. Honestly, you wouldn’t want to be out there. There’s a bit of a gap there, so don’t even bother wetting a line until we get to the 8th.

The real standout is Trespassers (reef) on Tuesday, September 8th, in the morning. We’ve got a solid 4.9ft SSW groundswell pushing in with a very long period of 17 seconds – that’s proper energy, and the combined energy figure is a hefty 1352. The wind is light and off-shore, from the SE, making for clean, lined-up waves. This is the pick of the entire forecast. The water is sitting at 59.0°F, which is bang on average for this time of year. This is a break for experienced surfers, and with that kind of period, it’s going to be ripping down the reef, not just closing out. It’s a fairly consistent spot, and crowds can be *sometimes* an issue, so get in early.

The following week gets interesting again. Wednesday, September 16th, morning sees another solid pulse. You’ve got a 6.2ft SW groundswell with a 17-second period, and the combined energy is 2054, which is strong. The wind is a light SE cross-off, keeping the surface clean. The swell is a bit bigger, pushing into the expert zone, but the quality should be there for those who can handle it.

Then, hold onto your hats for Friday, September 18th, morning. The wind is dead calm – glassy conditions. The swell is a clean 4.6ft from the SW with a 14-second period. The combined energy is moderate at 848, but with zero wind, the waves will be absolutely perfect. It’s a bit smaller than the earlier standouts, but the conditions will be as good as it gets. The crowd might be a factor though, as it’s a known spot.

Later in the window, the surf is smaller and wind becomes a bit more onshore, so the quality drops off. The 16th of September is the last big highlight before things taper off. The 19th has some small, clean options in the afternoon, but nothing to write home about. The 20th has some size but gets lumpy again.

Stay stoked, and don’t sleep on that Tuesday morning.

Short Range Forecast

Mostly dry. Very mild (max 14°C on Sun morning, min 9°C on Mon night). Winds decreasing (strong winds from the W on Sat morning, light winds from the SSW by Sat night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 13°C on Thu afternoon, min 9°C on Wed night). Winds increasing (light winds from the SE on Tue morning, fresh winds from the SSE by Tue night).

Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
2
1
0
1
1
3
4
0
2
2
2
3
3
3
3
3
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.5
SW
9
2.5
SW
12
2.3
SW
14
1.8
SW
14
1.6
SW
14
1.3
SW
14
0.9
SW
13
0.9
SW
14
1.1
SW
19
1.5
SSW
17
1.5
SSW
16
1.5
SSW
16
1.3
SSW
19
2.3
SSW
18
2.3
SSW
17
2.1
SSW
16
1.8
SSW
16
1.5
SSW
15
1.3
SSW
15
1.2
SSW
15
1.1
SSW
16
Wave Graph
Metric surfscale
Energy kJ
1212
2107
2110
1215
924
586
282
264
828
1352
1214
1155
1328
3200
3022
2263
1692
1042
656
576
627
Wind (km/h)
45
W
40
WSW
25
SW
10
WSW
15
WSW
15
SSW
10
SSW
15
S
15
ESE
10
SE
20
SSW
20
SSE
30
SE
25
SE
20
SE
15
SE
20
ESE
15
E
15
ENE
10
ENE
15
ENE
Wind State
on
on
cross-on
cross-on
cross-on
cross
cross
cross
cross-off
cross-off
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
off
cross-off
High Tide
1:17PM0.02m
1:36PM0.02m
1:58PM0.02m
2:19PM0.02m
3:31AM0.01m
2:38PM0.02m
3:27AM0.01m
2:54PM0.02m
3:44AM0.01m
3:06PM0.02m
Low Tide
11:35PM0.00m
11:24PM0.00m
10:57PM0.00m
10:30PM0.00m
6:48AM0.01m
10:12PM0.00m
7:49AM0.01m
10:01PM0.00m
8:36AM0.01m
9:57PM0.00m
part cloud
part cloud
cloud
part cloud
part cloud
clear
part cloud
clear
part cloud
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:37
6:35
6:33
6:33
6:31
6:30
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:05
6:06
6:06
6:07
6:07
6:08
6:08
 mm
Temp °C
13
13
13
14
14
13
14
14
10
12
12
11
12
12
10
12
13
11
14
15
16
Feels °C
4
4
7
12
11
9
11
10
6
10
8
6
6
6
5
8
8
7
12
13
13
  • Map Icons:
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  • 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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