Trespassers Surf Break

Lat Long: 35.13° S 136.94° E

Trespassers Surf Forecast and Surf Report

Issued: 2 pm 12 Sep 2026 (local time)

Forecast update in  hr  min

Today's Trespassers sea temperature is
14.9°C
0.5° 

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


Trespassers surf forecast from 12 Sep 2026:

  • Best quality surf: Wednesday 16 Sep, 9AM (local time) - 5.5ft (1.7m), 15s period, SSW swell with offshore winds.
  • Most powerful swell: Tuesday 15 Sep, 6PM (local time) - 6ft (1.8m), 14s period, SSW swell with 1,370 kJ wave energy.
  • Next surfable swell (1★+): Saturday 12 Sep, 6PM (local time) - 4ft (1.2m), 16s 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 Saturday (Sep 12) at 6PM. The primary swell is predicted to be 1.2m and 16s 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 1.8m 14s and forecast to arrive on Tuesday (Sep 15) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Sunday (Sep 13) at 3AM.

Wave TypeTime (ACST) & Date Wave Height & Period
Next good surf (1 star+) 6PM (Sat 12th Sep)4ft (1.2m) 16s
Best Surf 9AM (Wed 16th Sep)5.5ft (1.7m) 15s
Most Powerful 6PM (Tue 15th Sep)6ft (1.8m) 14s

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


The Lowdown

Alright folks, Rusty here, looking over what’s in store for us over the next couple of weeks at Trespassers. It’s a bit of a mixed bag, but there are some real gems hiding in there if you’re patient.

Right off the bat, the forecast is a bit quiet, so don’t expect much this weekend. We’ve got a long wait ahead. From Saturday the 12th right through until Tuesday the 15th, the conditions are just too messy or the wind is all wrong. It’s going to be a frustrating few days with nothing really worth paddling out for.

Things start to turn around on Wednesday the 16th. That morning and afternoon look like the first real standout of the period. The swell is coming from the SSW at a solid 6 ft to 5 ft with a long 15-second period – proper groundswell energy. The wind swings offshore from the ESE, which will keep things clean. The wave energy is moderate to strong (1190 to 1132), so there’s plenty of push. This is a reef break, so that long period will wrap in nicely. It’s an advanced spot, so not one for beginners at this size. Keep an eye on the crowds though – they show up here sometimes. The water temp is sitting at 59°F, which is about average for this time of year.

We then get a bit of a lull Thursday and Friday with smaller, cleaner waves but nothing massive. The next real standout pops up on Monday the 21st. The morning is clean with a cross-off breeze and a 5 ft SSW swell (821 wave energy). But the afternoon session is the one to circle – the same size swell, 5 ft from the SW, with a gentle cross-off wind and a combined energy of 1457. That’s moderate to strong energy, and the forecast suggests excellent conditions for experienced surfers. The wind is light, so it’ll be glassy. Again, crowds are possible.

Then we get another cracker on Tuesday the 22nd. The morning has a 7 ft SSW swell with a fresh offshore wind. That’s getting into the expert-only territory for size at this break, but if you’ve got the skill, it’s a prime window. The afternoon is slightly smaller at 6 ft but still excellent. The energy readings are strong (1956 and 1743). The 16-second period is very long, which is a bonus for a reef setup like this.

There’s a little more fun to be had on Wednesday the 23rd and Thursday the 24th with cleaner, smaller SSW swell, but the next big, bold event is Thursday the 24th afternoon. That’s a tricky one – a 7 ft swell with a 21-second period, coming from the SSW. That’s an incredibly long period, and the energy is massive (4039). The wind is very light though, so it might be glassy. That size and period is for experts only, and it will be super clean but very powerful.

After that, things get blown out by onshore winds and get much bigger – the 25th and 27th see swell over 8 ft and even up to 10 ft, but with strong onshore wind, making it a poor choice for surfing. That’s more a kite-surfing setup if anything.

So to sum it up: your best bets are Wednesday the 16th for the first clean, proper swell, and then Monday the 21st through Wednesday the 23rd for consistent, clean conditions with great energy. The 22nd is the one that really stands out if you’re an expert.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Sat night. Warm (max 21°C on Sat afternoon, min 12°C on Mon night). Mainly fresh winds.

Days 5-7 Weather Summary

Mostly dry. Very mild (max 16°C on Fri morning, min 8°C on Wed night). Wind will be generally light.

Sat
12
Sunday
13
Monday
14
Tuesday
15
Wednesday
16
Thursday
17
Friday
18
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
3
0
0
0
0
0
0
1
3
2
2
3
3
3
1
2
2
0
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.2
SW
15
0.9
SSW
15
1
SW
16
1.3
WSW
16
0.9
SW
15
0.8
SW
14
1.1
SW
12
1.1
SW
16
1.8
SW
15
1.7
SW
14
1.7
SSW
14
1.7
SSW
15
1.7
SSW
15
1.4
SSW
15
1.1
SW
14
0.9
SSW
14
0.9
SSW
13
0.8
SSW
16
0.8
SSW
16
0.7
SW
15
Wave Graph
Metric surfscale
Energy kJ
693
377
515
832
322
231
341
651
1358
1203
1142
1206
1222
851
463
332
282
347
310
217
Wind (km/h)
15
NE
25
NNE
20
WNW
25
W
20
WSW
20
WSW
20
WSW
20
SSW
20
SSE
20
SSE
20
SE
20
ESE
25
ESE
20
ESE
15
ENE
5
NE
15
NE
20
N
15
N
10
N
Wind State
cross-off
cross-off
cross-on
on
on
cross-on
on
cross
cross-off
cross-off
cross-off
off
off
off
cross-off
glassy
cross-off
cross
cross
cross
High Tide
4:29AM0.02m
3:21PM0.02m
5:01AM0.02m
3:19PM0.02m
5:27AM0.02m
3:22PM0.01m
6:03AM0.02m
3:14PM0.01m
6:41AM0.02m
2:57PM0.01m
7:39AM0.02m
2:18PM0.02m
Low Tide
9:54PM0.00m
9:56AM0.01m
10:01PM-0.00m
10:30AM0.01m
10:15PM-0.00m
10:59AM0.01m
10:29PM-0.00m
11:23AM0.01m
10:45PM-0.00m
11:38AM0.01m
11:03PM-0.00m
11:26AM0.01m
11:18PM0.00m
part cloud
rain showers
rain showers
clear
clear
part cloud
cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:24
6:22
6:20
6:20
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:09
6:10
6:12
6:12
6:13
6:14
6:14
 mm
1
1
Temp °C
21
21
15
15
13
14
15
15
14
14
11
11
11
10
11
12
14
16
19
20
Feels °C
17
16
12
11
10
11
11
12
9
8
6
6
6
5
8
11
10
11
15
16
  • 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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