Trespassers Surf Break

Lat Long: 35.13° S 136.94° E

Trespassers Surf Forecast and Surf Report

Issued: 8 am 04 Aug 2026 (local time)

Forecast update in  hr  min

Today's Trespassers sea temperature is
14.7° 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 4 Aug 2026:

  • Best quality surf: Thursday 6 Aug, 9PM (local time) - 5ft (1.5m), 17s period, SW swell with offshore winds.
  • Most powerful swell: Monday 10 Aug, 12AM (local time) - 10ft (3.0m), 19s period, SW swell with 7,123 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 4 Aug, 6PM (local time) - 3ft (0.9m), 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 Tuesday (Aug 04) at 6PM. The primary swell is predicted to be 0.9m and 14s period with a secondary swell of 0.4m and 21s. 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 12AM. 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 6AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Tue 4th Aug)3ft (0.9m) 14s
Best Surf 9PM (Thu 6th Aug)5ft (1.5m) 17s
Most Powerful12AM (Mon 10th Aug)10ft (3.0m) 19s

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


The Lowdown

Alright, Rusty here. Let’s talk about what’s on the menu for the next couple of weeks at Trespassers.

Right now, the water temperature is sitting at 59°, which is pretty much bang on average for the time of year, so no shock to the system there.

The coming days are a bit of a mixed bag, but there’s a glimmer or two. The first real highlight looks like Wednesday morning, August 5th. The swell is a modest 2ft from the SSW, but the period is a very long 19 seconds, which means proper groundswell energy. The wind is a clean cross-offshore breeze from the north, and the combined swell energy is moderate at 385. It’s not a big day, but the conditions are set to be clean, making it a good window for a more experienced surfer to get a few smooth lines on the reef. Keep in mind, this spot is fairly consistent, but it’s an advanced break, so it’s not for the faint-hearted.

The pattern then gets messy. From Thursday the 6th through to the end of the first week, we see a lot of onshore and cross-onshore winds. The swell builds, but quality takes a dive. That Friday morning, August 7th, brings a bigger 6ft swell from the SW with a 15-second period, and the combined swell energy hits 1359, which is strong. But a 12 mph cross-shore wind is going to chop it up. It’s a tough call.

The second week takes a turn for the big and the wild. From Sunday, August 9th, onwards, the swell pumps up, hitting 10ft to 12ft by the 10th and 11th, with combined swell energy readings soaring into the thousands (4261, 4956, 5720). That’s serious, heavy water. The problem is the wind. Near gale-force onshores and cross-onshores will blow the place to bits. This is expert territory only, and honestly, with that wind, it’s looking more like a kite-surfing playground than a paddle-surfing spot. The swell direction is from the SSW to SW, which isn’t the optimum, but on those sizes, the reef will be handling a lot of juice.

Things start to settle a little around Thursday, August 14th. The morning shows a 7ft SW swell with a 16-second period, and the wind drops to a light cross-onshore from the NNW. The combined swell energy is still strong at 2286, but it’s a step down from the chaos. The conditions are still marginal, but the potential for a few solid, powerful waves is there for the experts.

The weekend of August 16th looks a bit more manageable. The swell drops to 4ft, the wind goes cross-offshore from the north, and the conditions are clean. It’s not a standout, but it’s a safe bet for a session after the big stuff.

Overall, the best and most reliable window is that Wednesday morning, August 5th. It’s clean, it’s small but long-period, and it’s a good chance to get the reef working. The other days are either too big, too windy, or both. The second week is promising in size but risky in quality.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Wed night. Very mild (max 14°C on Wed afternoon, min 10°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Heavy rain (total 30mm), heaviest during Sun morning. Very mild (max 18°C on Fri night, min 11°C on Sat afternoon). Winds increasing (light winds from the N on Fri morning, near gales from the WSW by Sun afternoon).

Tuesday
4
Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
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
2
2
0
0
1
0
3
2
2
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)
1.1
SW
12
1
SW
14
0.6
SSW
20
0.6
SSW
19
0.7
SSW
18
0.9
SSW
16
1
SW
16
1.1
SW
16
1.6
SW
16
1.7
SW
15
1.5
SW
17
1.4
SW
17
1.4
SW
16
1.4
SW
15
1.4
SW
15
1.1
SW
15
2.5
SW
16
3
SW
19
3
SW
16
2.5
SW
16
3.5
WSW
14
Wave Graph
Metric surfscale
Energy kJ
398
401
280
246
283
475
496
610
1224
1359
1305
1124
993
905
784
589
3137
7123
4261
3330
4619
Wind (km/h)
10
SW
5
SW
15
NE
15
N
15
NNW
15
NW
10
SSW
10
WSW
10
NE
20
N
20
NNE
25
N
35
N
40
N
30
NNW
45
WSW
50
W
40
WSW
25
W
30
WNW
50
WSW
Wind State
cross-on
cross-on
cross-off
cross-off
cross
cross-on
cross
on
cross-off
cross
cross-off
cross
cross
cross
cross
cross-on
on
cross-on
on
cross-on
on
High Tide
4:39PM0.02m
8:18AM0.01m
4:12PM0.02m
3:06PM0.02m
2:07PM0.02m
2:08PM0.02m
2:27PM0.02m
2:49PM0.02m
3:25AM0.00m
Low Tide
10:41AM0.01m
00:19AM0.00m
10:34AM0.01m
00:30AM0.00m
00:39AM0.00m
00:42AM0.00m
00:36AM0.00m
00:10AM0.00m
11:48PM0.00m
cloud
clear
clear
cloud
cloud
rain showers
part cloud
clear
clear
part cloud
cloud
light rain
cloud
light rain
rain showers
heavy rain
thunderstorm
light rain
clear
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:15
7:13
7:13
7:11
7:11
7:09
7:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:42
5:42
5:43
5:44
5:45
5:45
5:45
 mm
2
1
2
13
11
2
1
2
2
Temp °C
12
12
11
13
14
14
14
14
14
15
17
18
14
12
15
12
13
13
14
15
13
Feels °C
9
9
8
9
11
12
12
12
12
10
12
13
6
5
10
1
2
7
9
9
4
  • 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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