Trespassers Surf Break

Lat Long: 35.13° S 136.94° E

Trespassers Surf Forecast and Surf Report

Issued: 8 am 04 Sep 2026 (local time)

Forecast update in  hr  min

Today's Trespassers sea temperature is
15.1°C
0.7° 

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


Trespassers surf forecast from 4 Sep 2026:

  • Best quality surf: Tuesday 8 Sep, 9AM (local time) - 5ft (1.5m), 17s period, SSW swell with offshore winds.
  • Most powerful swell: Wednesday 9 Sep, 9AM (local time) - 7.5ft (2.3m), 20s period, SSW swell with 4,127 kJ wave energy.
  • Next surfable swell (1★+): Monday 7 Sep, 6AM (local time) - 3.5ft (1.1m), 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 6AM. The primary swell is predicted to be 1.1m and 13s period with a secondary swell of 0.2m and 22s. 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 2.3m 20s 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 1.1m 5s period and expected on Wednesday (Sep 09) at 6PM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Mon 7th Sep)3.5ft (1.1m) 13s
Best Surf 9AM (Tue 8th Sep)5ft (1.5m) 17s
Most Powerful 9AM (Wed 9th Sep)7.5ft (2.3m) 20s

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 Trespassers.

Right, we’ve got a solid run of swells coming in, but it’s a mixed bag of conditions. The water here is sitting at 59°, which is pretty much where you’d expect it to be for this time of year, nothing weird going on.

The action kicks off this Friday morning, the 4th of September. There’s a solid 7ft swell from the SSW, but it’s carrying a lot of energy (2151). The problem is a moderate cross-offshore breeze that’s going to keep things a bit messy. It’s surfable, but not the best we’ll see. The wind picks up in the afternoon, making it even less appealing.

Saturday the 5th is a write-off. Strong onshore winds and a messy lumpy swell. Not worth getting wet.

We get a bit of a breather on Sunday the 6th. The swell drops to 6ft, but the wind is light cross-onshore, so it’s small and bumpy. You’d be fighting for scraps.

Now, Monday the 7th is a small day. The swell is only 3ft from the SSW. But the wind is light and clean, so if you’ve got a big board, you might find a few fun little ones.

Tuesday the 8th is where it starts to get interesting. The morning looks promising. The swell is 5ft but it’s a long-period groundswell from the SSW (17 seconds). The wind is offshore and light, so the waves will be clean and well-shaped. This is a reef break, so that long period will translate into some proper, grinding lines. This is a standout for the experienced crew. The energy is strong (1352), so there’s plenty of push. It’s an advanced wave, and crowds are possible, so get there early.

Wednesday the 9th sees a big jump in size. The swell is 8ft to 8ft from the SSW, with a massive 20-second period, carrying very strong energy (4127). But the wind is a fresh cross-offshore, making it a bit tricky. The wave quality is there, but it’s going to be a handful. Thursday the 10th is a better bet. The swell drops to 6ft, the wind is offshore and clean, and the waves will be powerful. Another good day for the experienced surfer.

The swell fades over the weekend of the 12th and 13th, with small 3ft to 4ft surf. The wind on Saturday is light, so you might get a couple of rides, but Sunday is blown out.

We hit a flat spot from Monday the 14th through to Tuesday morning the 15th. The swell is tiny and the wind is messy.

Then things kick off again. Tuesday afternoon the 15th and Wednesday the 16th are the real standouts. The swell jumps to 10ft from the SW, with a long period (14-15 seconds) and very strong energy (2305-3424). The wind on Tuesday afternoon is a moderate cross-offshore, but on Wednesday afternoon, we get a glassy calm. For a reef break, that’s perfection. The waves will be big, powerful, and clean. This is expert territory only – 8ft to 10ft is serious. It’s a bit far out, so keep an eye on the forecast, but it’s looking like the best window of the whole run.

The end of the run from the 17th to the 19th sees the swell staying around 7ft to 8ft, but the wind is fresh and not ideal, so it’s a step down from that mid-week peak.

So, to sum it up: the best bets are Tuesday the 8th for a cleaner, more manageable solid swell, and then the big one on Wednesday the 16th for the glassy, powerful, expert-level session. Don’t waste your time on the weekend of the 12th.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Fri morning. Very mild (max 18°C on Fri afternoon, min 11°C on Sun night). Winds decreasing (strong winds from the WNW on Fri night, light winds from the WSW by Sun morning).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 14°C on Mon afternoon, min 9°C on Wed night). Winds increasing (calm on Tue morning, fresh winds from the SSE by Wed morning).

Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
2
0
0
0
0
2
2
0
2
2
3
4
1
3
3
2
3
4
4
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
16
1.9
SSW
16
1.5
SSW
15
3
SW
10
2.5
SW
12
2.3
SW
14
1.9
SW
14
1.6
SW
14
1.3
SW
14
0.9
SW
13
0.9
SW
13
1.1
SW
19
1.5
SSW
17
1.5
SSW
16
1.6
SSW
16
2.3
SSW
20
2.4
SSW
18
2.2
SSW
17
1.9
SSW
16
1.7
SSW
16
1.4
SSW
15
Wave Graph
Metric surfscale
Energy kJ
2151
1699
1056
1430
1902
1975
1319
911
586
282
261
828
1352
1229
1289
4127
3731
2968
1975
1555
897
Wind (km/h)
20
NNE
30
NNE
35
WNW
45
WSW
40
W
20
SW
10
WSW
10
WSW
15
S
15
ESE
15
ESE
20
ESE
10
ENE
15
SW
20
SSE
35
SSE
30
SE
25
SE
20
E
25
ESE
20
E
Wind State
cross-off
cross-off
cross-on
on
on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
off
off
cross-on
cross-off
cross-off
cross-off
cross-off
off
off
off
High Tide
1:32PM0.02m
1:17PM0.02m
1:36PM0.02m
1:58PM0.02m
2:19PM0.02m
3:31AM0.01m
2:38PM0.02m
3:27AM0.01m
2:54PM0.02m
Low Tide
11:34PM-0.00m
11:35PM0.00m
11:24PM0.00m
10:57PM0.00m
10:30PM0.00m
6:48AM0.01m
10:12PM0.00m
7:49AM0.01m
10:01PM0.00m
rain showers
part cloud
part cloud
rain showers
part cloud
part cloud
cloud
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:37
6:37
6:35
6:33
6:33
6:31
6:30
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:04
6:05
6:06
6:06
6:07
6:07
6:08
 mm
1
1
Temp °C
15
18
17
13
13
13
14
13
12
13
14
12
13
13
12
11
11
10
10
11
11
Feels °C
9
13
12
3
5
7
11
10
8
9
11
9
12
10
8
4
4
4
5
6
7
  • 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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