Surf Forecasts:
Trespassers surf forecast from 10 Jul 2026:
- Best quality surf: Wednesday 15 Jul, 12AM (local time) - 5.5ft (1.7m), 15s period, SSW swell with glassy winds.
- Most powerful swell: Tuesday 14 Jul, 3AM (local time) - 8ft (2.4m), 17s period, SW swell with 3,377 kJ wave energy.
- Next surfable swell (1★+): Wednesday 15 Jul, 12AM (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 (Jul 15) at 12AM. The primary swell is predicted to be 1.7m and 15s period with a secondary swell of 0.7m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Trespassers in the next 16 days are 2.4m 17s and forecast to arrive on Tuesday (Jul 14) at 3AM. Winds are predicted to be 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 Thursday (Jul 16) at 6AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Wed 15th Jul) | 5.5ft (1.7m) 15s |
| Best Surf | 12AM (Wed 15th Jul) | 5.5ft (1.7m) 15s |
| Most Powerful | 3AM (Tue 14th Jul) | 8ft (2.4m) 17s |
Table - best surf conditions forecast for Trespassers over the next 16 days.
Alright, let’s break down the next sixteen days at Trespassers.
Honestly, it’s a grim start. From Saturday the 11th right through to the 23rd, it’s mostly a write-off. We’ve got a big SW swell pushing through, with combined wave energy readings over 3000 (moderate to strong), but the wind is ruining it. It’s onshore, cross-onshore, or just messy, with winds up to 30 mph. The surf quality is poor or marginal. Not much to get excited about.
Then we get a proper window. Wednesday the 15th is the first real standout. The swell is a clean 4 to 5 feet from the SSW, with a long 15-second period – that’s groundswell. The wind goes light offshore from the NE, and by the afternoon it’s glassy. That’s your window for clean, lined-up waves. The combined energy is around 838 to 1042 (moderate). It’s a reef break, so it’ll handle that long period well. It’s for advanced surfers, and it’s fairly consistent. The water temp is about average for this time of year.
After that, it gets a bit choppy again, but then we see another proper run. Thursday the 24th and Friday the 25th of July look excellent. On the 24th, we’ve got a 6-foot SSW swell with a 15-second period, and a gentle cross-offshore breeze from the SSE. Clean and solid. The combined energy is around 1380 (moderate). The 25th is even better: a 5 to 6-foot SSW swell, with a light offshore wind from the E, turning glassy in the afternoon. That’s prime. The energy is around 1126 to 1219. These are the best days. It’s solid but not too big for experienced surfers.
The last day, Sunday the 26th, has a cleaner 4-foot SSW swell with a gentle offshore breeze, but it’s smaller.
So, the first 11 days are a bust. The best surf is on Wednesday the 15th, and then a proper run from Thursday the 24th through Saturday the 26th of July. The 24th and 25th are the real standouts. Get after it.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Sat morning. Very mild (max 15°C on Sun afternoon, min 11°C on Sat afternoon). Winds increasing (moderate winds from the NW on Fri night, strong winds from the WSW by Sat afternoon). | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Mon night. Very mild (max 15°C on Mon night, min 12°C on Tue night). Winds decreasing (fresh winds from the WSW on Mon night, calm by Tue night). | ||||||||||||||||||||
Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | Thursday 16 | Fri 17 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SW 14 | WSW 7 | SW 10 | SW 13 | SW 12 | SW 12 | SW 15 | SW 16 | SW 16 | SW 17 | SW 16 | SSW 16 | SSW 15 | SSW 15 | SW 15 | SW 15 | SW 14 | SSW 14 | SSW 16 | SSW 16 | SSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 412 | 469 | 1506 | 2132 | 1670 | 1670 | 2328 | 3252 | 2941 | 3074 | 2761 | 2206 | 1423 | 1042 | 838 | 623 | 476 | 347 | 853 | 933 | 730 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | on | on | on | on | on | on | on | cross-on | cross-on | glassy | cross-off | glassy | cross-off | cross | cross | cross-off | cross-off | cross-off |
High Tide | 2:43PM0.02m | 3:07PM0.02m | 3:29PM0.03m | 2:26AM0.00m | 4:01PM0.03m | 2:56AM0.00m | 4:24PM0.03m | 3:36AM0.01m | 4:44PM0.02m | 4:18AM0.01m | 4:58PM0.02m | ||||||||||
Low Tide | 3:20AM0.00m | 4:58AM0.00m | 6:23AM0.00m | 00:51AM0.00m | 7:20AM0.00m | 00:37AM0.00m | 8:06AM0.00m | 00:28AM0.00m | 8:47AM0.00m | 00:15AM0.00m | 9:24AM0.00m | ||||||||||
 |  | |  |  | | | |  | | |  |  | | | | | | | | | |
 | — | 7:28 | — | — | 7:28 | — | — | 7:28 | — | — | 7:28 | — | — | 7:28 | — | — | 7:26 | — | — | 7:26 | — |
 | — | — | 5:24 | — | — | 5:25 | — | — | 5:25 | — | — | 5:27 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 |
mm | 2 | 4 | 1 | — | — | — | 1 | — | 1 | 3 | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 13 | 12 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 14 | 15 | 13 | 13 | 13 | 14 | 14 | 15 | 15 | 13 | 14 |
Feels °C | 10 | 4 | 2 | 6 | 7 | 8 | 9 | 9 | 9 | 10 | 10 | 12 | 11 | 12 | 12 | 12 | 10 | 11 | 11 | 9 | 9 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SSW 14 | — | — | — | — | SW 15 | SSW 16 | SSW 16 | SW 17 | SW 16 | SSW 16 | SSW 15 | SSW 15 | SW 15 | SW 15 | SW 14 | SSW 14 | SSW 16 | SSW 16 | SSW 15 |
| kJ | 412 | 134 | — | — | — | — | 2328 | 870 | 724 | 3074 | 2761 | 2206 | 1423 | 1042 | 838 | 623 | 476 | 347 | 853 | 933 | 730 |
Swell 2 Height (m) Direction Period (s) | — | N 6 | — | — | — | — | SSW 18 | — | — | — | SW 16 | SW 16 | W 7 | — | — | — | SSW 20 | SSW 18 | — | — | — |
| kJ | — | 1 | — | — | — | — | 62 | — | — | — | 437 | 411 | 54 | — | — | — | 38 | 207 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NE 4 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 5 | WSW 7 | SW 10 | SW 13 | SW 12 | SW 12 | WSW 6 | SW 16 | SW 16 | SW 17 | — | — | — | — | — | — | NNE 4 | NNW 4 | N 4 | NE 3 | NE 4 |
| kJ | 38 | 469 | 1506 | 2132 | 1670 | 1670 | 74 | 3252 | 2941 | 1579 | — | — | — | — | — | — | 4 | 6 | 1 | 3 | 2 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 14 | 732 | 970 | 970 | 1184 | 1281 | 731 | 1034 | 1269 | 733 | 160 | 59 | 0 | 0 | 0 | 0 | 79 | 14 | 0 | 14 | 79 |
Best forecast wave conditions in Yorke Peninsula | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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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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