Trespassers Surf Break

Lat Long: 35.13° S 136.94° E

Trespassers Surf Forecast and Surf Report

Issued: 8 pm 23 Aug 2026 (local time)

Forecast update in  hr  min

Today's Trespassers sea temperature is
14.8°C
0.2° 

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


Trespassers surf forecast from 23 Aug 2026:

  • Best quality surf: Monday 31 Aug, 12AM (local time) - 5ft (1.6m), 18s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Thursday 27 Aug, 9PM (local time) - 6ft (1.8m), 18s period, SW swell with 2,014 kJ wave energy.
  • Next surfable swell (1★+): Monday 24 Aug, 6PM (local time) - 2.5ft (0.7m), 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 (Aug 24) at 6PM. The primary swell is predicted to be 0.7m and 13s 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 1.8m 18s and forecast to arrive on Thursday (Aug 27) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Monday (Aug 24) at 3PM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Mon 24th Aug)2.5ft (0.7m) 13s
Best Surf12AM (Mon 31st Aug)5ft (1.6m) 18s
Most Powerful 9PM (Thu 27th Aug)6ft (1.8m) 18s

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


The Lowdown

Alright, Rusty here, giving you the lowdown. We’re looking at Trespassers, a reef break for the advanced crew, fairly consistent, and it loves a good SSW swell.

The first few days are a bit of a dud. Monday the 24th has some small swell, 2 to 3 feet from the SW, but the wind is cross-off and the energy is weak (312). Not much to write home about.

Things get a bit more interesting on Tuesday the 25th, but the wind is a strong cross-shore, making it lumpy. The swell bumps up to 6 feet from the SSW with a long 16-second period, and the energy is a solid 2253, but the wind is just messy. It’s not going to be a fun session.

The standout, the real gem, is Monday the 31st of August. We’ve got a clean 5 feet of SSW swell with a 16-second period, packing a punch (energy at 1371). The wind is a light offshore from the ESE, keeping it glassy. This is the best of the lot. The long period groundswell might make it a bit fast, but for a reef break, it’ll be a proper wave. Crowds are listed as “sometimes,” so you might see a few others, but it’s worth it.

After that, Tuesday the 1st of September keeps it clean with a light offshore, and the swell holds at a fun 4 feet from the SW. By the afternoon, the wind goes glassy, which is a rare treat. The energy is a bit lower (584), but the shape should be good.

Then we hit a dry spell. From the 2nd of September through to the 6th, the wind is all over the place, mostly onshore or cross-onshore, and the swell is either too small or blown out. There’s a pulse on the 5th of September, with a 6 feet SW swell, but the wind is light cross-onshore, so it’s going to be bumpy.

The very end of the run, around the 8th of September, shows a big 8 feet SW swell, but with a strong cross-onshore wind, it’s going to be a mess. Only for the die-hards.

So, to sum it up: the best window is Monday the 31st of August and Tuesday the 1st of September. The 31st is the clear winner. Everything else is a bit of a gamble with the wind. Stay tuned, but that’s the story.

Rusty.

Short Range Forecast

Heavy rain (total 23mm), heaviest during Mon morning. Very mild (max 16°C on Sun night, min 11°C on Mon morning). Winds decreasing (fresh winds from the ENE on Mon morning, calm by Tue night).

Days 5-7 Weather Summary

Moderate rain (total 16mm), heaviest on Fri morning. Very mild (max 18°C on Thu night, min 12°C on Fri morning). Winds decreasing (fresh winds from the N on Thu morning, calm by Fri night).

Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
0
0
1
0
1
1
1
0
0
2
2
2
2
2
2
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.1
SW
15
0.9
SW
14
0.7
SW
14
0.8
SSW
13
1.7
SSW
16
1.6
SW
14
1.3
SW
14
1.1
SW
13
1
SW
13
0.6
SW
12
0.9
SW
14
0.9
SW
20
1.8
SW
18
1.6
SW
17
1.7
SW
16
1.7
SW
14
1.4
SW
14
0.9
SW
13
0.9
SW
13
Wave Graph
Metric surfscale
Energy kJ
496
297
194
219
1356
1031
648
444
326
114
272
552
1925
1453
1420
1179
791
253
277
Wind (km/h)
15
NE
20
ENE
20
NE
20
SSW
30
SSW
25
SW
10
SSW
10
N
15
NNW
15
NE
25
N
25
NNE
30
NNE
20
NNW
15
WSW
5
WNW
15
ESE
15
SE
20
SE
Wind State
cross-off
cross-off
cross-off
cross
cross
cross-on
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross
on
on
cross-off
cross-off
cross-off
High Tide
2:29PM0.02m
2:56AM0.01m
2:43PM0.02m
3:00AM0.01m
3:00PM0.02m
3:20AM0.01m
3:14PM0.02m
3:45AM0.01m
3:26PM0.02m
4:13AM0.01m
3:34PM0.02m
Low Tide
11:45PM0.00m
11:01PM0.00m
6:33AM0.00m
10:36PM0.00m
7:22AM0.00m
10:26PM0.00m
8:00AM0.00m
10:24PM0.00m
8:29AM0.00m
10:29PM0.00m
9:06AM0.01m
10:35PM0.00m
light rain
mod rain
mod rain
light rain
part cloud
clear
clear
clear
part cloud
clear
clear
clear
cloud
heavy rain
light rain
cloud
rain showers
rain showers
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:52
6:50
6:48
6:48
6:46
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:55
5:57
5:58
5:59
5:59
6:00
 mm
1
8
9
5
11
3
1
1
Temp °C
16
12
12
13
13
13
13
13
13
13
15
17
18
13
13
14
14
15
14
Feels °C
13
7
8
9
7
7
10
10
11
10
9
12
13
9
11
13
10
12
11
  • 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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