Trespassers Surf Break

Lat Long: 35.13° S 136.94° E

Trespassers Surf Forecast and Surf Report

Issued: 2 am 29 Jul 2026 (local time)

Forecast update in  hr  min

Today's Trespassers sea temperature is
14.9° 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 29 Jul 2026:

  • Best quality surf: Tuesday 4 Aug, 12AM (local time) - 4.5ft (1.3m), 13s period, SW swell with cross-offshore winds.
  • Most powerful swell: Wednesday 29 Jul, 12PM (local time) - 6.5ft (2.0m), 15s period, SSW swell with 1,739 kJ wave energy.
  • Next surfable swell (1★+): Thursday 30 Jul, 9AM (local time) - 4ft (1.2m), 13s 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 (Jul 30) at 9AM. The primary swell is predicted to be 1.2m and 13s period with a secondary swell of 0.5m and 8s. 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 2.0m 15s and forecast to arrive on Wednesday (Jul 29) at 12PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Saturday (Aug 01) at 9PM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 9AM (Thu 30th Jul)4ft (1.2m) 13s
Best Surf12AM (Tue 4th Aug)4.5ft (1.3m) 13s
Most Powerful12PM (Wed 29th Jul)6.5ft (2.0m) 15s

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


The Lowdown

Right then, let’s talk about Trespassers. This is a solid advanced reef set-up, and it’s going to see a lot of action over the next couple of weeks, but the timing is everything. The water’s sitting at 59°, which is pretty much what you’d expect for this time of year, nothing weird going on there.

We start off on Wednesday the 29th with a bit of a shrug. The swell’s there, a decent 7ft from the SSW with a very long 16-second period, and the combined energy is strong at 2469 – that’s proper groundswell. But the wind is cross-on from the SSW at 9 mph, making it choppy. The afternoon cleans up a fraction but is still far from good. Thursday the 30th is where it starts to turn. We’ve got a drop in size to 4ft, still from the SSW, period dropping to 13 seconds, but the energy is moderate at 497. The morning has clean conditions with a light SE cross-off breeze at 3 mph. Then the afternoon goes glassy, with a 4ft SW swell and a 13-second period. That is the standout window. Clean, glassy conditions on a reef break with a long-period swell – that’s going to be some tidy, lined-up surfing. It’s not huge, but the quality is there. Keep in mind it’s an advanced spot, so it’s not for beginners anyway.

Friday the 31st stays small, 3ft to 2ft, with clean cross-off breezes. Surfable for sure, but not the highlight of the run.

Then we hit a wall. From Saturday the 1st of August right through to Wednesday the 13th of August, it’s a long, ugly stretch. The wind gets nasty – strong cross-shore, onshore, and some proper gale-force stuff – and the swell direction and period create a mess. The swell sizes bounce between 3ft and 12ft, but the wind comment for most of these is “poor surf conditions” or “marginal.” The 12ft on the 9th of August is a big swell, but with a 16 mph cross-wind and a short 12-second period, it’s just a lumpy, blown-out nightmare. The combined energy is very strong (3172), but the wind kills it. Do not paddle out for those days unless you’ve got a kite. The reef set-up will be handling that energy, but the surface will be shocking.

The only flicker in that wasteland is on Tuesday the 5th of August. A 4ft SSW swell, with a 17-second period (very long), combined energy of 875 (moderate), and a cross-off wind. It’s listed as marginal, but that long period groundswell on a reef can be clean even with a bit of wind. It’s a gamble, but for the crew who know the spot, it might be the only session in that whole ten-day gap.

So, the best on offer is Thursday the 30th of July. The morning is clean cross-off, the afternoon is flat glass. Swell is 4-4ft, 13-second period, SSW-SW. That is the one to circle.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 13°C on Thu afternoon, min 12°C on Wed morning). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Sun morning. Very mild (max 14°C on Sat night, min 12°C on Sat morning). Winds decreasing (fresh winds from the W on Sun morning, calm by Mon night).

Wednesday
29
Thursday
30
Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
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
1
2
2
2
2
1
2
1
0
1
0
0
0
0
1
0
3
2
2
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
15
1.5
SSW
14
1.2
SSW
13
1.1
SW
13
0.9
SW
13
0.8
SSW
13
0.7
SW
14
0.7
SSW
18
1.1
SSW
17
1.4
SSW
17
1.4
SSW
16
1.2
SSW
16
1.2
SSW
15
1.4
SW
16
1.7
SW
14
1.6
SW
14
1.3
SW
13
1
SW
13
0.9
SW
14
0.8
SSW
20
Wave Graph
Metric surfscale
Energy kJ
2178
1488
845
465
394
249
215
189
276
742
1107
1005
657
584
952
1203
1019
560
316
305
490
Wind (km/h)
15
SSW
20
SSW
10
SSW
5
SE
5
SW
5
ENE
10
NE
10
NNE
15
NE
25
N
25
N
30
NNW
35
W
35
WSW
25
SW
10
SW
15
SW
5
SSE
5
ENE
5
ENE
10
ENE
Wind State
cross-on
cross-on
cross
cross-off
glassy
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
on
on
cross-on
cross-on
cross-on
cross-off
off
glassy
cross-off
High Tide
3:53PM0.02m
3:34AM0.01m
4:03PM0.02m
4:03AM0.01m
4:21PM0.02m
4:39AM0.01m
4:32PM0.02m
5:23AM0.01m
4:40PM0.02m
6:06AM0.01m
4:45PM0.02m
6:58AM0.01m
4:39PM0.02m
Low Tide
11:18PM0.00m
8:40AM0.00m
11:23PM0.00m
9:07AM0.00m
11:26PM0.00m
9:34AM0.00m
11:41PM0.00m
9:59AM0.01m
11:53PM0.00m
10:22AM0.01m
00:02AM0.00m
10:41AM0.01m
00:19AM0.00m
cloud
part cloud
part cloud
cloud
cloud
part cloud
cloud
clear
clear
clear
clear
clear
rain showers
clear
part cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:20
7:18
7:18
7:16
7:16
7:16
7:15
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:37
5:37
5:38
5:38
5:39
5:40
5:42
 mm
2
Temp °C
12
12
12
12
13
13
12
13
13
13
13
14
14
14
13
13
13
12
12
12
11
Feels °C
8
7
9
10
11
10
8
10
8
7
7
9
5
6
6
9
8
8
9
9
8
  • 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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