Trespassers Surf Break

Lat Long: 35.13° S 136.94° E

Trespassers Surf Forecast and Surf Report

Issued: 2 pm 12 Jul 2026 (local time)

Forecast update in  hr  min

Today's Trespassers sea temperature is
15.1° C
0.3° 

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


Trespassers surf forecast from 12 Jul 2026:

  • Best quality surf: Wednesday 15 Jul, 3AM (local time) - 5.5ft (1.7m), 15s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Monday 13 Jul, 9PM (local time) - 8ft (2.5m), 17s period, SW swell with 3,695 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 15 Jul, 3AM (local time) - 5.5ft (1.7m), 15s 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 Wednesday (Jul 15) at 3AM. The primary swell is predicted to be 1.7m and 15s period. 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 2.5m 17s and forecast to arrive on Monday (Jul 13) at 9PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Thursday (Jul 16) at 9AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 3AM (Wed 15th Jul)5.5ft (1.7m) 15s
Best Surf 3AM (Wed 15th Jul)5.5ft (1.7m) 15s
Most Powerful 9PM (Mon 13th Jul)8ft (2.5m) 17s

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


Alright folks, Rusty here. Let’s cut through the numbers and talk about what’s actually gonna be worth wetting a wetsuit for at Trespassers over the next couple of weeks.

Right off the bat, we’ve got a rough start. The first few days are a write-off. Sunday the 12th and Monday the 13th are seeing a solid 8ft to 8ft SW groundswell, but a nasty 19 mph onshore west wind is turning it into a washing machine. The wave energy is massive (2050 to 3215), but it’s just not rideable. Tuesday the 14th is no better – still big, still cross-onshore, still choppy. You’d be better off watching the chaos from the cliff.

The first real window of opportunity hits Wednesday morning, the 15th of July. The swell drops to a clean 5ft from the SSW, and the wind goes glassy with an ENE breeze at 3 mph. This is the standout moment of the whole outlook. The energy drops to a moderate 1014, but with glassy conditions, that 15-second period groundswell will have some real push. It’s a bit long for a straight beach setup, but this is a reef break, so the longer period should actually help it reel off nicely. The water is sitting at 59°, which is about normal for this time of year, so no shock there. Expect very good surf. Thursday morning (16th) is also a solid shout with a 4ft SSW swell and light cross-offshore NE winds, keeping things clean. By Friday (17th), we’re still looking at fun, clean 4ft to 4ft waves with light cross-off breezes.

Then it gets quiet. From Saturday the 18th through the middle of the following week, the swell drops off a cliff. We’re talking 2ft to 3ft for days, and the wind goes funky – cross-shore or onshore. That’s a solid 4-to-5-day gap where you’re better off doing something else.

Things look like they might spark up again around Wednesday the 22nd of July. The swell jumps back to 6ft from the SSW (11-second period), with clean cross-offshore NNE winds. The energy is moderate (868), and it’s a marginal call, but it’s the best bet after the quiet spell. After that, it’s a mixed bag. Thursday the 23rd is tiny, but then Friday the 24th of July sees a big pulse of 8ft to 8ft WSW swell with very strong energy (2687 to 4004). The problem is the wind is cross-onshore to onshore, making it choppy and messy. That's a lot of power but no quality unless you're an expert looking for a beating. Saturday the 25th is similar, with big, onshore-affected waves. The very end of the period, the 26th and 27th, fizzles out again with poor conditions.

So, the honest truth? The best surf on offer is Wednesday the 15th. That 5ft glassy SSW groundswell at Trespassers is your golden ticket. The water is average temp, the crowds are possible, but when it’s that clean, it’s worth it. Friday the 17th morning is a solid backup. The rest of the window is either too big and windy, too small, or too messy. If you’re a kite surfer, the big, windy days on the 24th and 25th might look more interesting than a paddle.

Stay patient, check the forecast, and don't force it on the bad days.

Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Mon night. Very mild (max 15°C on Sun afternoon, min 12°C on Tue night). Winds decreasing (fresh winds from the W on Mon afternoon, calm by Tue night).

Days 5-7 Weather Summary

Mostly dry. Very mild (max 13°C on Wed afternoon, min 11°C on Wed night). Wind will be generally light.

Sun
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
Rating
(10 max)
0
0
0
0
0
0
0
2
3
3
3
2
2
3
3
2
2
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.3
SW
13
2.2
SW
14
2.5
SW
16
2.4
SW
16
2.4
SSW
17
2.2
SSW
16
2
SSW
16
1.7
SSW
15
1.5
SSW
15
1.4
SW
14
1.3
SSW
14
1.2
SSW
14
1.3
SSW
17
1.3
SSW
16
1.3
SSW
16
1.2
SW
15
1.1
SW
14
0.9
SW
13
0.8
SW
13
0.6
SW
13
0.6
SSW
19
Wave Graph
Metric surfscale
Energy kJ
1594
1875
3098
2978
3301
2599
2007
1288
1014
857
701
561
975
811
832
649
476
261
208
136
251
Wind (km/h)
30
W
30
W
30
W
30
W
30
W
25
SW
20
SW
5
S
5
ENE
0
N
10
ENE
10
NE
10
N
10
NE
15
NNE
10
NNE
15
NE
20
NNE
20
N
25
NNE
35
N
Wind State
on
on
on
on
on
cross-on
cross-on
cross
glassy
glassy
off
cross-off
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross
High Tide
3:29PM0.03m
2:26AM0.00m
4:01PM0.03m
2:56AM0.00m
4:24PM0.03m
3:36AM0.01m
4:44PM0.02m
4:18AM0.01m
4:58PM0.02m
5:06AM0.01m
5:04PM0.02m
6:01AM0.01m
Low Tide
6:23AM0.00m
00:51AM0.00m
7:20AM0.00m
00:37AM0.00m
8:06AM0.00m
00:28AM0.00m
8:47AM0.00m
00:15AM0.00m
9:24AM0.00m
00:15AM0.00m
9:56AM0.00m
00:16AM0.00m
10:23AM0.01m
part cloud
part cloud
part cloud
cloud
rain showers
rain showers
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:28
7:28
7:28
7:26
7:26
7:26
7:26
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:25
5:25
5:27
5:28
5:28
5:29
5:29
5:30
 mm
3
1
Temp °C
15
15
15
15
15
15
14
13
13
13
13
12
12
13
13
13
13
13
15
16
14
Feels °C
9
9
9
9
10
11
10
12
12
13
11
10
10
10
10
10
9
8
11
11
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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