Surf Forecasts:
Trespassers surf forecast from 14 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 3PM (local time) - 5.5ft (1.7m), 15s period, SSW swell with offshore winds.
- Most powerful swell: Sunday 20 Sep, 3PM (local time) - 6.5ft (2.0m), 14s period, SW swell with 1,493 kJ wave energy.
- Next surfable swell (1★+): Wednesday 16 Sep, 3PM (local time) - 5.5ft (1.7m), 15s 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 Wednesday (Sep 16) at 3PM. The primary swell is predicted to be 1.7m and 15s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Trespassers in the next 16 days are 2.0m 14s and forecast to arrive on Sunday (Sep 20) at 3PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Tuesday (Sep 15) at 3PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Wed 16th Sep) | 5.5ft (1.7m) 15s |
| Best Surf | 3PM (Wed 16th Sep) | 5.5ft (1.7m) 15s |
| Most Powerful | 3PM (Sun 20th Sep) | 6.5ft (2.0m) 14s |
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 on the cards for our local stretch.
First up, the water temp is sitting about average for this time of year, nothing unusual there. Now, for the next few days, we’ve got some decent energy from the south-southwest. The standout window is Wednesday afternoon through Thursday. Wednesday afternoon sees a solid 6ft SSW groundswell (15-second period) with an offshore breeze, making for clean lines at Trespassers. The combined energy is pumping at a healthy 1238, so there’s some proper push in the water. Thursday morning drops a touch to 4ft but stays offshore with a gentle breeze, and then Thursday afternoon turns absolutely glassy with 3ft SSW swell and that lovely 14-second period – perfect for a long session. Crowds are possible here, so don't expect to have it all to yourself.
There’s a bit of a lull after that. Friday and Saturday are poor, with onshore and cross-shore winds chewing up a dropping swell. Sunday turns ugly with a strong onshore wind and a messy 7ft windswell – that’s kite-surfing territory, not for a paddle board.
But hold on, because we’ve got a promising run building again from Monday the 21st. Monday morning sees a clean 4ft SSW groundswell with light cross-offshore winds, and Monday afternoon goes glassy with a 5ft SSW swell (15 seconds) – that’s a beautiful combination. Tuesday the 22nd holds similar size with clean conditions, though a bit more breeze around.
Looking further ahead, there’s a bigger pulse on the horizon. Saturday the 26th looks seriously interesting – an 8ft SSW groundswell with a very long 19-second period, combined energy of 4509, and light cross-shore winds. This is big, powerful, and only for experienced surfers. The afternoon cleans up with a 8ft SSW swell and light offshore breeze – excellent for those who know what they’re doing. It’s a long way out, so don’t lock it in just yet, but keep an eye on it.
Rusty.
Short Range ForecastMostly dry. Very mild (max 15°C on Mon night, min 9°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Sat night, min 13°C on Thu night). Winds increasing (light winds from the NNE on Fri night, fresh winds from the W by Sun morning). | ||||||||||||||||||
Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | ||||||||||||||
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) | SW 13 | SSW 15 | SSW 14 | SW 14 | SSW 15 | SSW 15 | SW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 16 | SSW 15 | SSW 14 | SSW 13 | SW 13 | WSW 6 | SW 8 | SW 14 | SW 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 363 | 1332 | 1370 | 1220 | 1190 | 1238 | 930 | 545 | 402 | 222 | 407 | 291 | 136 | 118 | 84 | 110 | 236 | 1493 | 634 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross-off | cross-off | off | cross-off | off | glassy | cross-off | cross | cross | cross-off | cross | cross-off | cross-off | on | on | on |
High Tide | 5:27AM0.02m | 3:22PM0.01m | 6:03AM0.02m | 3:14PM0.01m | 6:41AM0.02m | 2:57PM0.01m | 7:39AM0.02m | 2:18PM0.02m | 1:34PM0.02m | 1:25PM0.02m | |||||||||
Low Tide | 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 | 11:27PM0.00m | 11:15PM0.00m | ||||||||
 |  | |  | | | | | | | | | | | | | |  | | |
 | — | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — |
 | 6:12 | — | 6:12 | — | — | 6:13 | — | — | 6:14 | — | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 14 | 14 | 10 | 11 | 12 | 10 | 11 | 12 | 14 | 16 | 20 | 21 | 21 | 24 | 26 | 16 | 14 | 15 |
Feels °C | 11 | 8 | 7 | 5 | 7 | 7 | 6 | 8 | 11 | 10 | 10 | 16 | 18 | 15 | 19 | 20 | 10 | 8 | 12 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SSW 15 | SSW 14 | SW 14 | SSW 15 | SSW 15 | SW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 16 | SSW 15 | SSW 14 | SSW 13 | SW 13 | SW 18 | SSW 16 | SW 14 | SW 12 |
| kJ | 208 | 1332 | 1370 | 1220 | 1190 | 1238 | 930 | 545 | 402 | 222 | 407 | 291 | 136 | 118 | 84 | 82 | 173 | 1493 | 634 |
Swell 2 Height (m) Direction Period (s) | SSW 16 | — | — | — | — | — | — | — | E 3 | SSW 17 | — | NE 4 | W 6 | SW 20 | SSW 19 | — | SSW 16 | — | — |
| kJ | 103 | — | — | — | — | — | — | — | 1 | 188 | — | 2 | 2 | 15 | 34 | — | 103 | — | — |
Swell 3 Height (m) Direction Period (s) | SSW 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | W 7 | — | — | — | — |
| kJ | 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 13 | SSW 4 | SSE 4 | SE 4 | SE 4 | ESE 4 | SE 4 | ESE 4 | ENE 3 | — | NNW 3 | NNW 4 | N 2 | N 4 | N 4 | WSW 6 | SW 8 | WSW 14 | — |
| kJ | 363 | 31 | 16 | 11 | 7 | 10 | 7 | 2 | 2 | — | 3 | 5 | 1 | 12 | 15 | 110 | 236 | 1111 | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 13 | 13 | 13 | 13 | 11 | 0 | 11 | 0 | 0 | 0 | 100 | 14 | 0 | 100 | 79 | 149 | 1260 | 733 | 13 |
Best forecast wave conditions in Yorke Peninsula | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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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