Trespassers surf break

Trespassers surfForecast / SA – Yorke Peninsula / Australia

information circle12 Day Weather and Surf, issued 3 am Thursday 18 Dec 2025 ACDT
Forecast update in hr  min  s Forecast update imminent
Trespassers surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Trespassers sea temperature is
18.4° C
(Which is 1.1°C warmer than normal for this time of year)


Best Forecast Surf Conditions for Trespassers this week:

The surf forecast for Trespassers over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Dec 20) at 10PM. The primary swell is predicted to be 0.6m and 11s period with a secondary swell of 0.1m and 16s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Trespassers in the next 12 days are 1.7m 16s and forecast to arrive on Tuesday (Dec 23) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Thursday (Dec 25) at 1AM.

Wave TypeTime (ACDT) & Date Wave Height & Period
Next good surf (1 star+)10PM (Sat 20th Dec)2ft (0.6m) 11s
Best Surf10PM (Sat 20th Dec)2ft (0.6m) 11s
Most Powerful 7PM (Tue 23rd Dec)5.5ft (1.7m) 16s

Table - best surf conditions forecast for Trespassers over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 34°C on Thu morning, min 13°C on Fri night). Winds increasing (light winds from the SSW on Thu night, strong winds from the WSW by Sat night).

Days 3-6 Weather Summary Mostly dry. Very mild (max 17°C on Sun morning, min 14°C on Sun night). Winds decreasing (fresh winds from the WSW on Sun morning, light winds from the SW by Sun night).

Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
1
0
0
1
Swell
Height Map
Wave Height (m) & direction (?)
0.4
SSW
0.4
SW
0.5
SW
0.5
SW
1
SW
0.8
SW
0.5
SW
0.6
SW
0.5
SW
1.3
WSW
1.3
SW
1.1
SW
1
SW
0.8
SW
0.8
SW
1.3
SW
1.6
SW
1.6
SSW
1.5
SSW
1.5
SW
1.3
SSW
Period(s) (?)121514131381212115613111112131616151514
Wave
Graph
(?)Metric surfscale
Energy kJ (?)6055100873308468845680115424245171184560130012731069940653
Wind
(km/h)
15
NNW
15
SW
10
SW
25
SW
35
SW
15
SSE
10
S
15
SW
10
NNW
35
WSW
35
SW
15
S
15
WSW
25
WSW
15
WSW
25
SW
30
SW
20
SSW
20
SSW
30
SW
20
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on
cross-
on
cross-
on
cross-
on
cross-
off
crosscross-
on
crossoncross-
on
crosscross-
on
cross-
on
cross-
on
cross-
on
cross-
on
crosscross-
on
cross-
on
cross-
off
High Tide
/ height (m)
2:04PM
0.01
4:39AM
0.02
3:03PM
0.01
5:02AM
0.02
3:35PM
0.01
5:26AM
0.02
4:03PM
0.01
5:44AM
0.02
4:34PM
0.01
6:08AM
0.02
5:09PM
0.01
6:27AM
0.02
5:49PM
0.01
Low Tide
/ height (m)
1:17PM
0.01
8:22PM
0.00
12:47PM
0.01
8:58PM
0.00
12:49PM
0.01
9:30PM
0.00
12:57PM
0.01
9:58PM
0.00
1:16PM
0.01
10:23PM
0.00
1:36PM
0.01
10:44PM
0.00
1:59PM
0.01
10:57PM
0.00
Thursday
18
Friday
19
Saturday
20
Sunday
21
Monday
22
Tuesday
23
Wednesday
24
Sunrise6:01--6:03--6:03--6:03--6:03--6:05--6:05--
Sunset-8:32--8:34--8:35--8:35--8:36--8:36--8:37-
clear
clear
part cloud
cloud
part cloud
clear
clear
cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
Rain (mm)
---------------------
Temp. °C343226191715171817171714161616161515161714
Feels °C (?)302823161111141513101191211121091013119
  • 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 12 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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