Trespassers Surf Break

Lat Long: 35.13° S 136.94° E

Trespassers Surf Forecast and Surf Report

Issued: 8 am 31 Jul 2026 (local time)

Forecast update in  hr  min

Today's Trespassers sea temperature is
14.7° 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 31 Jul 2026:

  • Best quality surf: Wednesday 5 Aug, 6PM (local time) - 3.5ft (1.1m), 17s period, SW swell with cross-offshore winds.
  • Most powerful swell: Sunday 2 Aug, 9PM (local time) - 6.5ft (2.0m), 17s period, SW swell with 2,339 kJ wave energy.
  • Next surfable swell (1★+): Friday 31 Jul, 3PM (local time) - 2.5ft (0.7m), 13s 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 Friday (Jul 31) at 3PM. The primary swell is predicted to be 0.7m and 13s period with a secondary swell of 0.4m and 20s. 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 2.0m 17s and forecast to arrive on Sunday (Aug 02) 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 0.5m 4s period and expected on Saturday (Aug 01) at 9AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 3PM (Fri 31st Jul)2.5ft (0.7m) 13s
Best Surf 6PM (Wed 5th Aug)3.5ft (1.1m) 17s
Most Powerful 9PM (Sun 2nd Aug)6.5ft (2.0m) 17s

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 cookin’ for Trespassers over the next couple of weeks.

Right now, the first solid surf we’re looking at is kickin’ off on Friday, July 31st, but it’s pretty small. We’re talkin’ a 3ft SSW swell around 13 seconds, with a light NNE breeze, so it’ll be a clean, cross-off morning. The combined energy of all swells directed here is a moderate 259. The water temp is 59°, which is about average for this time of year. It’s surfable, but nothing to get too excited about. That afternoon stays clean as the swell shifts a touch more SW, still small at 2ft, but the wave comment says expect good surf conditions.

Saturday morning, August 1st, we see a bump in size to 4ft from the SSW, with a much longer period of 18 seconds. That’s a proper groundswell, but the wind goes cross and stiff at 15 mph, turning it into a messy cross-shore chop. The afternoon picks up to 5ft but the wind is still cross, killing the vibe. Energy is getting serious though, with 769 and 1162 readings.

Sunday, August 2nd, is a write-off. The wind howls from the NNW at 22 mph, cross, and the swell is lumpy. Poor conditions, no argument.

We get a break on Monday, August 3rd, but the swell jumps to 7ft from the WSW with a 14-second period. That’s getting big, and with a strong cross-onshore wind, it’s just a mess. The combined energy hits 3049, but it’s a “poor surf conditions” call.

Now, here’s a little gem. Tuesday morning, August 4th. The wind drops to glassy, a 3 mph SW breeze, the swell is a clean 4ft from the SW at 13 seconds. The energy is a moderate 364. This is the standout early on. Clean, glassy conditions at an advanced reef break like Trespassers. If you can handle it, this is the best surf on offer in the first week. The afternoon stays small and glassy, but the wind shifts onshore, so morning is the call.

Wednesday, August 5th, brings a long-period 19-second SW groundswell at 2ft, with a light cross-off NNE breeze. Clean waves, but small. The second half of the week sees a building trend. Thursday, August 6th, is lookin’ real good. Morning brings 4ft SSW swell, 16 seconds, light cross-off, and a “very good surf conditions” call. The afternoon is even better: 5ft SSW swell, 16 seconds, same clean wind. The energy is 977. This is the real standout of the whole forecast. Clean, punchy, consistent.

Friday, August 7th, the swell gets bigger at 5ft, but the wind cranks up to 19 mph from the north, so it’s a choppy, cross mess. Not worth it.

The second week is a bit of a mixed bag, with a lot of onshore wind and poor conditions. Saturday, August 8th, shows a 5ft SW swell, but the wind is light and cross, so it’s marginal. Sunday and Monday, August 9th and 10th, are hammered by strong to near-gale onshore winds and huge swell. Monday afternoon sees a 10ft SW swell with a 19-second period, and energy is off the charts at 6438. That’s for experts only, but the wind is howling onshore, so it’s a no-go for paddle surfing. This setup is more interesting for kite surfing than paddle surfing.

The rest of the week is a write-off until Friday, August 14th, when we get a 6ft SSW swell with a 15-second period and light onshore wind. It’s marginal. Saturday, August 15th, shows a 5ft SSW swell, but the wind is a strong cross-shore, making it lumpy.

So, overall, the best windows are Tuesday morning, August 4th, for clean, glassy conditions on a smaller swell, and Thursday, August 6th, for the best combination of size, quality, and clean wind. After that, it’s a long gap of poor conditions. Keep an eye on things, though, the forecast can change.

Rusty.

Short Range Forecast

Light rain (total 4mm), mostly falling on Sun afternoon. Very mild (max 13°C on Fri morning, min 11°C on Sun afternoon). Winds increasing (light winds from the NE on Fri afternoon, fresh winds from the W by Sun afternoon).

Days 4-6 Weather Summary

Mostly dry. Very mild (max 13°C on Wed afternoon, min 10°C on Tue night). Wind will be generally light.

Friday
31
Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
Thursday
6
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
2
1
1
1
0
0
0
0
0
0
0
2
1
2
1
2
2
3
3
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SSW
13
0.7
SW
13
0.7
SSW
18
1.1
SSW
18
1.4
SSW
17
1.4
SSW
16
1.2
SSW
16
1.2
SSW
15
1.9
SW
16
2
WSW
14
1.6
SW
14
1.4
SW
13
1.1
SW
13
0.9
SSW
14
0.6
SSW
21
0.7
SW
19
0.8
SSW
18
1.1
SW
16
1.2
SSW
16
1.4
SW
16
1.6
SW
15
Wave Graph
Metric surfscale
Energy kJ
215
183
276
751
1055
1005
657
592
1855
1647
1049
632
364
362
286
376
399
610
700
917
1133
Wind (km/h)
15
NNE
15
NNE
15
NE
25
N
20
N
25
N
35
NNW
30
WNW
35
WSW
25
SW
25
SW
15
SSW
5
SW
5
W
15
NE
15
NNE
15
NNE
10
NE
15
NE
15
NNE
20
NE
Wind State
cross-off
cross-off
cross-off
cross
cross
cross
cross
on
cross-on
cross-on
cross-on
cross-on
glassy
on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
4:21PM0.02m
4:39AM0.01m
4:32PM0.02m
5:23AM0.01m
4:40PM0.02m
6:06AM0.01m
4:45PM0.02m
6:58AM0.01m
4:39PM0.02m
8:18AM0.01m
4:12PM0.02m
3:06PM0.02m
Low Tide
11:26PM0.00m
9:34AM0.00m
11:41PM0.00m
9:59AM0.01m
11:53PM0.00m
10:22AM0.01m
00:02AM0.00m
10:41AM0.01m
00:19AM0.00m
10:34AM0.01m
00:30AM0.00m
00:39AM0.00m
part cloud
clear
clear
clear
clear
clear
part cloud
rain showers
part cloud
part cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:18
7:16
7:16
7:16
7:15
7:13
7:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:38
5:38
5:39
5:40
5:42
5:42
5:43
 mm
4
Temp °C
13
13
12
12
13
13
12
13
13
12
12
12
12
12
11
12
13
13
14
15
15
Feels °C
9
9
8
7
8
7
4
5
5
6
6
7
9
9
8
8
10
10
9
11
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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