Trespassers Surf Break

Lat Long: 35.13° S 136.94° E

Trespassers Surf Forecast and Surf Report

Issued: 8 pm 17 Jul 2026 (local time)

Forecast update in  hr  min

Today's Trespassers sea temperature is
15.2° C
0.1° 

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


Trespassers surf forecast from 17 Jul 2026:

  • Best quality surf: Wednesday 22 Jul, 9PM (local time) - 4ft (1.2m), 15s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 23 Jul, 3AM (local time) - 5ft (1.6m), 15s period, SSW swell with 1,087 kJ wave energy.
  • Next surfable swell (1★+): Saturday 18 Jul, 6AM (local time) - 3ft (0.9m), 14s 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 Saturday (Jul 18) at 6AM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 0.4m and 6s. 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 1.6m 15s and forecast to arrive on Thursday (Jul 23) at 3AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 6s period and expected on Saturday (Jul 18) at 3PM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sat 18th Jul)3ft (0.9m) 14s
Best Surf 9PM (Wed 22nd Jul)4ft (1.2m) 15s
Most Powerful 3AM (Thu 23rd Jul)5ft (1.6m) 15s

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


The Lowdown

Alright folks, Rusty here. Let’s take a look at what’s on the cards for your local stretch.

The next two weeks are a bit of a mixed bag. We’ve got some clean, workable conditions to kick things off, but then a long stretch of ordinary, messy wind and swell that will test your patience. The real highlight, if you’re willing to wait, is a massive pulse of energy arriving right at the end of the month.

The first real window is Saturday morning, July 18th. Trespassers is the spot. We’ve got a clean 3ft SW groundswell with a solid 14-second period, pushed by a light cross-off breeze from the NNE. The water temp is about average for this time of year, so nothing special there. The combined energy is moderate at 332. It’s not big, but it’s clean, lined up, and should be a nice, easy session. It’s a fairly exposed reef, so it’ll pick up that energy well. Expect to see a few others out, as crowds are sometimes a thing here.

After that, things get ugly. From Saturday afternoon all the way through to the end of July, the wind is a mess – mostly cross or cross-on, and the swell is either small or blown out. The surf quality is poor, and the guidance says it’s not worth your time. You’ll be looking at a long, dry spell of over a week.

Now, the standouts. The real action kicks off mid-week, Wednesday July 30th. This is the one to circle on your calendar. Trespassers is going to be absolutely pumping. The combined energy is massive, hitting 4,474 on Thursday morning, and climbing to a whopping 7,428 (strong to very strong) by the afternoon. We’re talking a solid 10ft of SW groundswell, with period around 14 seconds. Wind is a gentle cross-off from the SW, which will keep the face reasonably clean. This is a serious, expert-only swell. If you’re a beginner, stay well clear. For the experienced crew, this is a proper session. The crowd could be a factor given the size, but for a wave of this quality, it’s worth it.

The following morning, Thursday July 31st, still has good size, but the wind is a problem. The stand-out is hands-down the afternoon of July 30th. That’s the one.

So, to sum it up: enjoy the small, clean stuff on Saturday morning, July 18th, then bunker down for the wait. The reward is that massive, solid swell hitting on July 30th. It’s a long-range call, so keep an eye on it, but it looks like a proper belter.

Rusty.

Short Range Forecast

Mostly dry. Very mild (max 16°C on Sun night, min 13°C on Fri night). Wind will be generally light.

Days 5-7 Weather Summary

Some drizzle, heaviest during Tue night. Very mild (max 15°C on Mon night, min 12°C on Wed night). Wind will be generally light.

Saturday
18
Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
1
1
0
0
2
1
0
2
0
0
0
0
0
3
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
SW
14
0.9
SW
14
0.8
SW
13
0.7
SW
13
0.4
SW
20
0.6
SW
18
1
SW
16
1
SW
15
1
SW
14
1.3
SW
14
1.1
SW
13
1.1
SW
12
0.9
SW
12
0.6
SW
11
0.7
SW
13
1.4
SSW
15
1.6
SSW
14
1.4
SSW
14
1.4
SSW
15
Wave Graph
Metric surfscale
Energy kJ
412
313
208
166
120
252
498
432
404
658
437
346
240
96
170
851
1057
721
897
Wind (km/h)
10
NE
15
NNE
10
NNE
15
NNE
20
N
15
N
15
N
15
NNW
10
NNW
10
N
15
NNW
10
WNW
10
WNW
15
SW
15
WSW
10
SSE
10
S
15
WSW
15
WNW
Wind State
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-off
cross
cross-on
cross
cross-on
cross-on
on
cross-on
cross-on
cross-off
cross
on
on
High Tide
5:06AM0.01m
5:04PM0.02m
6:01AM0.01m
5:01PM0.02m
7:05AM0.01m
4:48PM0.02m
8:59AM0.01m
4:19PM0.02m
3:25PM0.02m
2:38PM0.02m
Low Tide
00:15AM0.00m
9:56AM0.00m
00:16AM0.00m
10:23AM0.01m
00:17AM0.00m
10:39AM0.01m
00:33AM0.00m
10:05AM0.01m
00:47AM0.00m
1:05AM0.00m
1:20AM0.00m
part cloud
clear
clear
part cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
rain showers
clear
clear
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:26
7:26
7:26
7:24
7:24
7:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:29
5:30
5:30
5:31
5:31
5:32
 mm
1
Temp °C
14
13
15
15
13
15
16
15
15
15
15
15
15
14
14
13
13
13
13
Feels °C
10
9
12
11
9
11
12
11
12
12
12
12
14
11
11
11
11
10
11
  • 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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