Surf Forecasts:
Trespassers surf forecast from 20 Sep 2026:
- Best quality surf: Monday 21 Sep, 12PM (local time) - 6ft (1.8m), 13s period, SW swell with cross-offshore winds.
- Most powerful swell: Saturday 26 Sep, 12PM (local time) - 5ft (1.5m), 19s period, SSW swell with 1,649 kJ wave energy.
- Next surfable swell (1★+): Monday 21 Sep, 12PM (local time) - 6ft (1.8m), 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 Monday (Sep 21) at 12PM. The primary swell is predicted to be 1.8m and 13s period with a secondary swell of 1.0m and 16s. 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 1.5m 19s and forecast to arrive on Saturday (Sep 26) at 12PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Saturday (Sep 26) at 3PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Mon 21st Sep) | 6ft (1.8m) 13s |
| Best Surf | 12PM (Mon 21st Sep) | 6ft (1.8m) 13s |
| Most Powerful | 12PM (Sat 26th Sep) | 5ft (1.5m) 19s |
Table - best surf conditions forecast for Trespassers over the next 16 days.
Short Range ForecastMostly dry. Very mild (max 17°C on Sun morning, min 9°C on Mon night). Winds decreasing (fresh winds from the W on Sun morning, calm by Tue afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Wed night, min 13°C on Fri night). Winds increasing (calm on Thu afternoon, fresh winds from the SE by Fri night). | ||||||||||||||||||||
Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | Friday 25 | Saturday 26 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SSW 16 | WSW 15 | SW 14 | SW 14 | SSW 14 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SW 13 | SW 13 | SW 12 | SW 13 | SSW 21 | SSW 19 | SSW 18 | SSW 17 |
Wave Graph  | |||||||||||||||||||||
 kJ | 326 | 1001 | 992 | 1161 | 1110 | 1087 | 1001 | 975 | 665 | 437 | 337 | 357 | 309 | 249 | 234 | 154 | 183 | 305 | 993 | 1480 | 1120 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross | cross-off | cross-off | off | cross-off | glassy | off | cross-off | cross-off | cross-off | cross-off | glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 1:25PM0.02m | 1:32PM0.02m | 1:43PM0.02m | 3:20AM0.01m | 1:57PM0.02m | 3:11AM0.01m | 2:07PM0.02m | 3:23AM0.01m | 2:26PM0.02m | 3:41AM0.01m | 2:41PM0.02m | ||||||||||
Low Tide | 11:15PM0.00m | 10:31PM0.00m | 9:49PM0.00m | 6:18AM0.01m | 9:29PM0.00m | 7:18AM0.01m | 9:23PM0.00m | 8:03AM0.01m | 9:25PM0.00m | 8:44AM0.01m | 9:30PM0.00m | ||||||||||
 |  |  |  | |  | | | | | | | | | | | |  | | | | |
 | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:17 | — | — | 6:19 | — | — | 6:20 | — | — | 6:20 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 15 | 14 | 12 | 13 | 11 | 13 | 14 | 16 | 19 | 21 | 23 | 21 | 23 | 22 | 22 | 22 | 18 | 14 | 14 | 17 |
Feels °C | 13 | 9 | 8 | 7 | 8 | 6 | 10 | 12 | 11 | 15 | 18 | 18 | 18 | 22 | 20 | 22 | 20 | 13 | 6 | 6 | 13 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 15 | WSW 7 | SW 14 | SSW 14 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SW 13 | SW 13 | SW 12 | SW 13 | SSW 14 | SSW 19 | SSW 18 | SSW 17 |
| kJ | 326 | 158 | 208 | 1161 | 1110 | 1087 | 1001 | 975 | 665 | 437 | 337 | 357 | 309 | 249 | 234 | 154 | 183 | 261 | 993 | 1480 | 1120 |
Swell 2 Height (m) Direction Period (s) | — | SW 12 | SW 14 | SW 15 | SSW 16 | SW 14 | — | E 4 | — | — | ENE 4 | — | — | ENE 3 | — | S 26 | SSW 24 | SSW 21 | SW 13 | — | — |
| kJ | — | 35 | 297 | 284 | 80 | 153 | — | 5 | — | — | 1 | — | — | 1 | — | 13 | 54 | 305 | 172 | — | — |
Swell 3 Height (m) Direction Period (s) | NE 5 | NE 5 | — | — | — | — | — | — | — | — | NNW 4 | — | — | NNW 4 | — | — | — | — | — | — | — |
| kJ | 4 | 1 | — | — | — | — | — | — | — | — | 2 | — | — | 1 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 5 | WSW 15 | SW 14 | SSE 4 | SE 3 | ESE 4 | E 4 | — | ESE 3 | NE 4 | NE 4 | — | ENE 3 | — | — | — | — | ESE 4 | SE 4 | SE 6 | SE 5 |
| kJ | 49 | 1001 | 992 | 7 | 3 | 14 | 13 | — | 2 | 6 | 2 | — | 1 | — | — | — | — | 20 | 40 | 131 | 85 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 17 | 733 | 13 | 499 | 0 | 0 | 18 | 0 | 0 | 100 | 0 | 18 | 0 | 0 | 11 | 0 | 11 | 14 | 256 | 498 | 820 |
Best forecast wave conditions in Yorke Peninsula | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Trespassers surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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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