Trespassers Surf Break

Lat Long: 35.13° S 136.94° E

Trespassers Surf Forecast and Surf Report

Issued: 2 am 19 Jul 2026 (local time)

Forecast update in  hr  min

Today's Trespassers sea temperature is
15.3° C
0.0° 

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


Trespassers surf forecast from 18 Jul 2026:

  • Best quality surf: Monday 20 Jul, 9PM (local time) - 4.5ft (1.3m), 14s period, SW swell with cross-offshore winds.
  • Most powerful swell: Thursday 23 Jul, 3PM (local time) - 6ft (1.9m), 16s period, SSW swell with 1,721 kJ wave energy.
  • Next surfable swell (1★+): Monday 20 Jul, 9PM (local time) - 4.5ft (1.3m), 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 Monday (Jul 20) at 9PM. The primary swell is predicted to be 1.3m and 14s period with a secondary swell of 0.7m and 10s. 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 1.9m 16s and forecast to arrive on Thursday (Jul 23) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 9PM (Mon 20th Jul)4.5ft (1.3m) 14s
Best Surf 9PM (Mon 20th Jul)4.5ft (1.3m) 14s
Most Powerful 3PM (Thu 23rd Jul)6ft (1.9m) 16s

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 cooking for the next couple of weeks.

Honestly, it’s a rough start. The first week and a half looks like a write-off for any decent surf. The wind is just never on our side, and the swell is either too small or too messy. We’re looking at a solid run of poor conditions from the get-go, with nothing worth paddling out for. The wind is mostly cross or cross-onshore, making a mess of things. There’s a bit of a bump in size around Thursday the 23rd with some 5.6ft swell from the SSW, but the wind is still cross and the conditions are just marginal at best. It’s not until the very end of the period that things start to turn around.

After a long, frustrating stretch, we finally get a glimmer of hope. The standout window is the very end of the forecast, around the 2nd and 3rd of August. The only spot on the menu is Trespassers, a reef break that’s fairly consistent and handles a SSW swell. The water temp is about average for the time of year, nothing out of the ordinary.

The real magic happens on Sunday, August 2nd. The morning sees a clean 2ft SSW groundswell, with a very long period of 21 seconds, and a light cross-offshore breeze. The wave energy is moderate (413). But the afternoon is the real gem: glassy conditions, with the wind dropping to just 3 mph from the SE. The swell is a clean 2.3ft from the SSW, with a long period of 19 seconds and moderate energy (451). This is the best on offer – clean, lined-up waves for those who know how to handle a reef break. Keep in mind, with a long period groundswell like that, it’ll be fat and straight at a beach break, but at a reef like Trespassers, it should be a thing of beauty. Just be aware that crowds are possible here.

Monday the 3rd of August also looks promising. The morning kicks off with a clean 2.6ft SSW swell, a 17-second period, and a light cross-offshore breeze. The energy is moderate (469). It’s a great follow-up to the glassy Sunday, but don’t expect it to be as perfect.

Short Range Forecast

Some drizzle, heaviest during Tue night. Very mild (max 16°C on Sun night, min 13°C on Sun morning). Winds increasing (light winds from the N on Mon afternoon, fresh winds from the W by Tue night).

Days 4-6 Weather Summary

Light rain (total 3mm), mostly falling on Wed morning. Very mild (max 14°C on Fri night, min 10°C on Wed night). Mainly fresh winds.

Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
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
0
0
3
0
0
0
0
0
0
2
1
0
0
0
0
0
0
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SW
20
0.6
SW
18
1
SW
16
1
SW
15
1.1
SW
15
1.3
SW
14
1.1
SW
13
1.1
SW
13
1
SW
12
1.3
SW
11
1.4
SW
12
1.7
SSW
14
1.8
SW
14
1.9
SSW
16
1.7
SSW
15
1.6
SW
15
1.6
SW
14
1.5
SW
14
1.4
SW
13
1.4
SW
13
1.3
SW
12
Wave Graph
Metric surfscale
Energy kJ
120
252
498
427
535
706
437
352
277
445
590
1109
1307
1721
1288
1020
978
816
680
659
528
Wind (km/h)
20
N
20
N
15
NNW
15
NNW
10
NNW
10
N
10
NNW
10
WNW
20
WNW
30
WSW
30
SW
25
SW
15
SSW
20
SW
20
WSW
25
WSW
30
W
25
W
25
WSW
25
WSW
10
SW
Wind State
cross
cross
cross
cross
cross-on
cross-off
cross-on
cross-on
on
cross-on
cross-on
cross-on
cross
cross-on
cross-on
on
on
on
cross-on
cross-on
cross-on
High Tide
5:01PM0.02m
7:05AM0.01m
4:48PM0.02m
8:59AM0.01m
4:19PM0.02m
3:25PM0.02m
2:38PM0.02m
2:30PM0.02m
2:42PM0.02m
Low Tide
10:23AM0.01m
00:17AM0.00m
10:39AM0.01m
00:33AM0.00m
10:05AM0.01m
00:47AM0.00m
1:05AM0.00m
1:20AM0.00m
1:51AM0.00m
part cloud
clear
part cloud
cloud
cloud
cloud
cloud
cloud
rain showers
rain showers
light rain
light rain
part cloud
part cloud
part cloud
cloud
cloud
part cloud
rain showers
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:26
7:26
7:24
7:24
7:24
7:22
7:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:30
5:30
5:31
5:31
5:32
5:34
5:34
 mm
1
1
1
1
2
1
Temp °C
13
15
16
14
15
15
14
15
15
13
12
12
11
11
12
12
13
14
14
14
13
Feels °C
9
11
12
10
12
12
11
12
12
6
5
6
6
6
7
6
7
9
9
9
10
  • 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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