Trespassers Surf Break

Lat Long: 35.13° S 136.94° E

Trespassers Surf Forecast and Surf Report

Issued: 8 am 24 Aug 2026 (local time)

Forecast update in  hr  min

Today's Trespassers sea temperature is
14.8°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 24 Aug 2026:

  • Best quality surf: Monday 31 Aug, 12AM (local time) - 4.5ft (1.3m), 16s period, SSW swell with offshore winds.
  • Most powerful swell: Monday 31 Aug, 6AM (local time) - 6ft (1.8m), 19s period, SSW swell with 2,411 kJ wave energy.
  • Next surfable swell (1★+): Monday 24 Aug, 3PM (local time) - 2.5ft (0.7m), 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 (Aug 24) at 3PM. The primary swell is predicted to be 0.7m and 14s period with a secondary swell of 0.3m and 19s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Trespassers in the next 16 days are 1.8m 19s and forecast to arrive on Monday (Aug 31) at 6AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Monday (Aug 24) at 3PM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Mon 24th Aug)2.5ft (0.7m) 14s
Best Surf12AM (Mon 31st Aug)4.5ft (1.3m) 16s
Most Powerful 6AM (Mon 31st Aug)6ft (1.8m) 19s

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


The Lowdown

Alright folks, Rusty here with a look at what's on offer for the next couple of weeks.

First up, we’ve got a bit of a slow start with a small window of weak, short-period swell, but the real standout is heading our way. The water temp is sitting at 59°, which is about average for this time of year, so nothing wild there.

We’re looking at a long stretch of small, clean surf on Monday (24th August) morning at Trespassers, a reef break. The swell is a tiny 3 feet from the SW, with a period of 14 seconds. The wind is a moderate cross-offshore breeze from the ENE, which will keep things clean. The combined energy is weak (312). The afternoon is even smaller, at 2 feet, but the wind switches to offshore, making it clean but very small.

Tuesday (25th August) is a write-off. The wind goes onshore and the swell jumps up to 6 feet, but it’s a messy cross-shore chop. The combined energy shoots up to 1604, but it’s not worth it.

Wednesday (26th) and Thursday (27th) are pretty average, with small, clean-ish waves in the 3 to 3 feet range, but the wind is either cross or cross-off, keeping things rideable but not great.

Now, Friday (28th August) is where we start to see something. The swell is 5 feet from the SW with a 16-second period, and the wind is a clean cross-offshore breeze from the NNE. The combined energy is 1419, which is moderate. It’s a solid, clean wave, but nothing epic.

The real standout, the one you’ve been waiting for, is Monday (31st August) morning. This is the pick of the period. The swell is a solid 6 feet from the SSW, with a long 18-second period. The wind is glassy – totally calm – making for perfect, clean conditions. The combined energy is a strong 2094. This is a proper groundswell with a lot of push, and for a reef break like Trespassers, it’s going to be excellent. Expect some proper sets and long, clean walls. This is for experienced surfers only, as the size and power will be challenging.

The rest of the first week is a mixed bag. Tuesday (1st September) sees the wind go cross, and the swell drops to 4 feet, making for poor conditions. The second week is even more of a gamble. There’s a spike in swell on Thursday (3rd September) afternoon with 6 feet from the SW, but it’s a short 13-second period and the wind is cross-onshore, making it choppy. The weekend of the 5th and 6th has some swell, but the wind is messy, and by Monday (7th) and Tuesday (8th) we’re looking at big, wild, onshore conditions. The combined energy on the 8th morning is a massive 4689, but the wind is howling onshore, so it’s a complete mess. This is more for the kite surfers than paddle surfers.

So, to sum it up: the best waves are on Monday morning (31st August). Glassy, 6 feet SSW groundswell, long period, and clean. Don’t miss it.

Rusty.

Short Range Forecast

Heavy rain (total 21mm), heaviest during Mon afternoon. Very mild (max 14°C on Tue afternoon, min 11°C on Mon morning). Winds decreasing (fresh winds from the SSW on Mon night, calm by Tue night).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 19°C on Thu night, min 14°C on Thu morning). Wind will be generally light.

Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
0
1
0
1
1
1
1
0
2
3
3
2
1
2
2
2
2
1
4
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
SW
14
0.7
SW
14
1
SSW
13
1.7
SSW
16
1.7
SSW
14
1.3
SW
14
1.1
SW
13
1
SW
13
0.7
SW
12
0.9
SW
14
0.9
SW
19
1.8
SW
18
1.6
SW
16
1.5
SW
16
1.1
SW
15
1
SW
14
0.9
SW
13
0.8
SW
13
0.6
SSW
19
0.7
SSW
19
1.3
SSW
16
Wave Graph
Metric surfscale
Energy kJ
297
194
357
1356
1142
648
444
331
139
272
546
1925
1419
1115
543
401
295
199
251
312
848
Wind (km/h)
20
ENE
20
ENE
25
SSW
30
SSW
25
SSW
10
S
10
NNW
15
NNW
15
NE
25
N
20
NNE
15
NE
25
NNE
15
NE
10
WNW
10
ENE
10
SE
10
ESE
15
ENE
5
SSW
10
ESE
Wind State
cross-off
off
cross-on
cross
cross-on
cross
cross-on
cross
cross-off
cross
cross-off
cross-off
cross-off
cross-off
cross-on
cross-off
cross-off
off
off
cross
off
High Tide
2:29PM0.02m
2:56AM0.01m
2:43PM0.02m
3:00AM0.01m
3:00PM0.02m
3:20AM0.01m
3:14PM0.02m
3:45AM0.01m
3:26PM0.02m
4:13AM0.01m
3:34PM0.02m
4:39AM0.01m
3:48PM0.02m
Low Tide
11:01PM0.00m
6:33AM0.00m
10:36PM0.00m
7:22AM0.00m
10:26PM0.00m
8:00AM0.00m
10:24PM0.00m
8:29AM0.00m
10:29PM0.00m
9:06AM0.01m
10:35PM0.00m
9:35AM0.01m
10:44PM0.00m
mod rain
mod rain
mod rain
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
cloud
cloud
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:52
6:52
6:50
6:48
6:48
6:46
6:45
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:55
5:57
5:58
5:59
5:59
6:00
6:00
 mm
6
9
6
Temp °C
12
12
13
13
14
13
13
12
13
15
18
19
17
18
16
16
17
17
17
17
16
Feels °C
7
8
8
7
8
10
10
9
10
9
14
14
12
14
14
14
15
13
16
15
13
  • 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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