Trespassers Surf Break

Lat Long: 35.13° S 136.94° E

Trespassers Surf Forecast and Surf Report

Issued: 2 am 05 Aug 2026 (local time)

Forecast update in  hr  min

Today's Trespassers sea temperature is
14.6° 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 4 Aug 2026:

  • Best quality surf: Thursday 6 Aug, 9PM (local time) - 5ft (1.6m), 15s period, SW swell with offshore winds.
  • Most powerful swell: Monday 10 Aug, 3AM (local time) - 10ft (3.0m), 19s period, SW swell with 6,370 kJ wave energy.
  • Next surfable swell (1★+): Thursday 6 Aug, 6PM (local time) - 3ft (0.9m), 18s 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 Thursday (Aug 06) at 6PM. The primary swell is predicted to be 0.9m and 18s period with a secondary swell of 1.0m and 15s. The wind is predicted to be glassy as the swell arrives.

The most powerful waves expected at Trespassers in the next 16 days are 3.0m 19s and forecast to arrive on Monday (Aug 10) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (Aug 07) at 9AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Thu 6th Aug)3ft (0.9m) 18s
Best Surf 9PM (Thu 6th Aug)5ft (1.6m) 15s
Most Powerful 3AM (Mon 10th Aug)10ft (3.0m) 19s

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


The Lowdown

Alright, Rusty here.

We’ve got a solid run of swell on the way for Trespassers, but honestly, it’s a real mixed bag with the wind. The opening days are a write-off, but there’s a couple of windows that’ll get the blood pumping.

The first decent chance doesn’t pop up until Friday the 7th morning. We see a 5.6ft SSW swell with a 16-second period – that’s proper groundswell, a nice long interval. The combined energy is 1394 (moderate-strong), so there’s power in the water. The wind is a cross-off from the NNE, which should keep it clean. This is a good one for the advanced crew, as it’s pushing into the too-big-for-beginners zone. The water temp is sitting at 58.3°, which is about average for this time of year, nothing weird there.

The rest of that weekend and into the following week gets messy. Saturday the 8th and Sunday the 9th are a complete loss with fresh onshore winds and lumpy conditions. The swell jumps up to 8.2ft plus, but with W winds on Monday 10th, it’s just a washing machine. There’s a lot of energy in the water (the combined energy peaks at 6952 on Monday morning), but it’s all blown out. This is more of a kite surfer’s setup than a paddle surfer’s for that stretch.

Things start to look interesting again as we head into the second week. The standout window is shaping up for Monday 17th August. The morning and afternoon both offer a 3.6ft SSW swell with a 16-17 second period. The wind is cross-off from the NNE, and the report says “clean.” The combined energy is around 672-734 (moderate), so it’s got a nice push without being overwhelming. This is a solid, manageable size for a good session.

But the real highlight, the one to circle on the calendar, is Wednesday 19th August. This is the best on offer. The morning sees a 6.2ft SW swell with a 17-second period, ESE offshore wind, and the forecast says “excellent surf conditions for experienced surfers.” The combined energy is 2136 (strong). The afternoon is even better: glassy conditions with ENE light air, same swell size, and a “glassy” description. This is a proper expert-level session – 6.2ft is in the zone where it’s too big for beginners, but for the experienced surfer on a reef, that long period swell will wrap in beautifully. Trespassers is a reef slab, so that long period is going to produce some proper, lined-up waves. Expect crowds possible, as it’s a known spot.

After that, the swell backs off a bit into Thursday 20th, but there’s still a clean 4.6ft option with cross-off winds in the afternoon.

So, the plan: wait out the early week mess. Friday 7th morning is a goer for a tricky but clean session. The real standout, the one you don’t miss, is Wednesday 19th August. That’s the one.

Short Range Forecast

Light rain (total 3mm), mostly falling on Fri night. Very mild (max 17°C on Fri afternoon, min 12°C on Wed morning). Winds increasing (calm on Thu afternoon, fresh winds from the NW by Fri night).

Days 4-6 Weather Summary

Heavy rain (total 36mm), heaviest during Sun morning. Very mild (max 15°C on Sat morning, min 11°C on Sun morning). Winds decreasing (strong winds from the SW on Sun afternoon, moderate winds from the NW by Mon afternoon).

Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
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
1
4
3
2
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.6
SSW
19
0.7
SSW
18
0.9
SSW
16
0.9
SSW
16
1.1
SW
16
1.7
SW
15
1.7
SW
16
1.6
SW
17
1.4
SW
16
1.5
SW
16
1.4
SW
15
1.3
SW
14
1.6
SW
16
2.1
SW
21
3
SW
19
2.5
SW
17
2.3
SW
16
2
SW
16
2.1
SW
14
2.3
SW
14
3
SW
16
Wave Graph
Metric surfscale
Energy kJ
246
283
475
441
617
1341
1394
1450
976
1068
784
667
1208
3745
5918
4151
2612
1847
1712
2155
4518
Wind (km/h)
15
N
20
NNW
15
NW
10
SW
10
WSW
10
ENE
20
NNE
20
N
25
N
35
N
30
N
30
NNW
35
W
35
WSW
40
SW
25
W
20
NW
40
NW
40
W
40
W
40
W
Wind State
cross
cross
cross-on
cross-on
on
cross-off
cross-off
cross
cross
cross
cross
cross
on
cross-on
cross-on
on
cross-on
cross-on
on
on
on
High Tide
4:12PM0.02m
3:06PM0.02m
2:07PM0.02m
2:08PM0.02m
2:27PM0.02m
2:49PM0.02m
3:25AM0.00m
3:12PM0.02m
3:21AM0.00m
Low Tide
10:34AM0.01m
00:30AM0.00m
00:39AM0.00m
00:42AM0.00m
00:36AM0.00m
00:10AM0.00m
11:48PM0.00m
6:22AM0.00m
11:30PM0.00m
cloud
cloud
part cloud
clear
clear
clear
part cloud
cloud
rain showers
cloud
mod rain
mod rain
mod rain
mod rain
rain showers
part cloud
part cloud
rain showers
rain showers
rain showers
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:13
7:13
7:11
7:11
7:09
7:09
7:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:42
5:43
5:44
5:45
5:45
5:45
5:46
 mm
3
6
6
9
6
2
7
1
1
Temp °C
12
13
14
14
14
13
15
17
15
15
14
14
11
11
13
13
14
14
12
13
14
Feels °C
8
8
11
12
12
12
10
13
9
8
8
9
3
4
6
7
9
7
3
4
6
  • 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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