
Surf Forecasts:
Trespassers surf forecast from 30 Jul 2026:
- Best quality surf: Wednesday 5 Aug, 9PM (local time) - 4ft (1.2m), 17s period, SSW swell with glassy winds.
- Most powerful swell: Monday 3 Aug, 3AM (local time) - 6ft (1.8m), 16s period, SW swell with 1,552 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 12PM (local time) - 4ft (1.2m), 13s 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 Thursday (Jul 30) at 12PM. The primary swell is predicted to be 1.2m and 13s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Trespassers in the next 16 days are 1.8m 16s and forecast to arrive on Monday (Aug 03) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Aug 05) at 6AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Thu 30th Jul) | 4ft (1.2m) 13s |
| Best Surf | 9PM (Wed 5th Aug) | 4ft (1.2m) 17s |
| Most Powerful | 3AM (Mon 3rd Aug) | 6ft (1.8m) 16s |
Table - best surf conditions forecast for Trespassers over the next 16 days.
The Lowdown
Alright, Rusty here, let’s talk about what’s coming up for Trespassers.
We’ve got a bit of a mixed bag in this 16-day window. The first few days actually open with some clean, rideable surf, but there’s a long stretch of poor conditions and strong winds that starts on August 1st and hangs around for the better part of a week. If you’re keen to get wet, your best window is the very start and then a solid upswing around August 6th.
Thursday July 30th is where we kick off. Morning surf is 4ft of SSW swell with a long 13-second period – a nice groundswell. Winds are light offshore from the ESE, keeping it clean. Combined energy is moderate at 483, and the water is sitting at 59°, which is about average for this time of year. Afternoon glass-off conditions with a 4ft SW swell. This is a solid little day. Friday July 31st drops a bit in size to 3ft, but still clean in the morning with cross-off winds. It’s surfable, just a step down. Then everything goes south.
From Saturday August 1st right through to about Tuesday August 4th, we’re dealing with strong winds, lumpy conditions, and poor surf quality. The 1st has a 4ft swell, but strong northerly winds and a long 18-second period make it tricky at this reef. Sunday the 2nd and Monday the 3rd are write-offs with onshore and cross-on winds hammering the break. There’s a long gap here where you’re better off sitting it out.
The break in the weather comes Tuesday August 4th. Winds drop right off into glassy conditions, and while the swell is small at 3ft, the 14-second period from the SW will give you some clean, fun lines. This is one of the only decent windows in that first week.
Now, the real standout is Thursday August 6th. This is your best bet. Morning and afternoon both offer 5ft of SW swell, period around 15-16 seconds, and light cross-off winds from the NE and ENE. The combined energy is strong, hitting 1676 in the morning and 1561 in the afternoon. This is excellent surf for experienced surfers. Clean conditions and solid long-period groundswell. This is the day to call in sick for.
Friday August 7th still has 5ft in the morning and 5ft in the afternoon, with cross-off winds, but the forecast flags marginal tide issues. Still worth a look if you missed Thursday. After that, it gets ugly again. Saturday the 8th is small with strong gusty winds, and Sunday the 9th through to August 14th is a write-off. We’re talking onshore winds, huge swells over 10ft with wind chop, and persistent poor conditions. The swell on the 9th is 10ft with a combined energy of 3611, but with 25 mph onshore winds, it’s just a messy, dangerous wall of water.
So, to sum it up: hit Thursday July 30th and Friday July 31st for a fun little warm-up. Skip the first week of August. The absolute best is Thursday August 6th with clean, strong groundswell. After that, the whole setup looks more interesting for kite surfing than paddle surfing, with those big, windy days.
Stay patient, and pick your day.
Rusty
Short Range ForecastMostly dry. Very mild (max 14°C on Sat night, min 12°C on Thu morning). Winds increasing (calm on Thu morning, fresh winds from the N by Sat night). | Days 4-6 Weather SummarySome drizzle, heaviest during Sun afternoon. Very mild (max 14°C on Sun afternoon, min 10°C on Tue night). Winds decreasing (fresh winds from the NNW on Sun morning, calm by Tue morning). | ||||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | |||||||||||||||
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 13 | SW 13 | SSW 13 | SSW 13 | SW 13 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SW 17 | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | SSW 20 | SSW 19 | SSW 18 | SSW 16 |
Wave Graph | |||||||||||||||||||||
465 | 394 | 299 | 215 | 183 | 276 | 751 | 1055 | 1005 | 657 | 584 | 854 | 1382 | 1019 | 632 | 311 | 301 | 280 | 450 | 817 | 726 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | on | cross-on | cross-on | cross-on | cross-on | glassy | glassy | cross-off | cross-on | cross | glassy |
High Tide | 4:03PM0.02m | 4:03AM0.01m | 4:21PM0.02m | 4:39AM0.01m | 4:32PM0.02m | 5:23AM0.01m | 4:40PM0.02m | 6:06AM0.01m | 4:45PM0.02m | 6:58AM0.01m | 4:39PM0.02m | 8:18AM0.01m | 4:12PM0.02m | ||||||||
Low Tide | 11:23PM0.00m | 9:07AM0.00m | 11:26PM0.00m | 9:34AM0.00m | 11:41PM0.00m | 9:59AM0.01m | 11:53PM0.00m | 10:22AM0.01m | 00:02AM0.00m | 10:41AM0.01m | 00:19AM0.00m | 10:34AM0.01m | 00:30AM0.00m | ||||||||
7:18 | — | — | 7:18 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | |
— | 5:37 | — | — | 5:38 | — | — | 5:38 | — | — | 5:39 | — | — | 5:40 | — | — | 5:42 | — | — | 5:42 | — | |
mm | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 12 | 12 | 13 | 13 | 13 | 12 | 13 | 13 | 14 | 13 | 14 | 14 | 12 | 13 | 12 | 12 | 12 | 11 | 12 | 14 | 15 |
Feels °C | 10 | 10 | 10 | 9 | 9 | 8 | 7 | 8 | 8 | 5 | 7 | 7 | 6 | 7 | 7 | 10 | 9 | 8 | 7 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | SW 13 | SSW 13 | SSW 13 | SW 13 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 15 | SW 17 | SW 14 | SW 14 | SW 13 | SW 13 | SW 14 | SSW 14 | SSW 19 | SSW 18 | SSW 16 |
465 | 394 | 299 | 215 | 183 | 276 | 751 | 1055 | 1005 | 657 | 584 | 854 | 1382 | 1019 | 632 | 311 | 301 | 268 | 450 | 817 | 726 | |
Swell 2 Height (m) Direction Period (s) | W 7 | — | SW 23 | SSW 21 | SSW 20 | SSW 13 | SW 21 | SW 19 | W 7 | WSW 6 | NNE 5 | — | — | — | SSW 18 | SSW 16 | SSW 22 | SSW 20 | SW 14 | NE 4 | — |
27 | — | 20 | 44 | 149 | 113 | 18 | 95 | 37 | 13 | 2 | — | — | — | 31 | 102 | 46 | 280 | 200 | 4 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | ENE 4 | — | — | — | — | — | — | SW 22 | — | — | — | — |
— | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | 73 | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NE 2 | N 4 | NNW 4 | N 4 | NW 5 | WSW 7 | WSW 9 | WSW 5 | — | — | — | — | — | NNE 3 | NNW 4 | W 5 |
— | — | — | — | — | 1 | 9 | 7 | 9 | 51 | 180 | 258 | 31 | — | — | — | — | — | 4 | 7 | 42 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 18 | 100 | 19 | 100 | 651 | 160 | 546 | 499 | 499 | 11 | 0 | 0 | 0 | 0 | 14 | 0 |
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.










