
Surf Forecasts:
Trespassers surf forecast from 1 Aug 2026:
- Best quality surf: Friday 7 Aug, 12AM (local time) - 5ft (1.6m), 17s period, SW swell with offshore winds.
- Most powerful swell: Monday 3 Aug, 3AM (local time) - 7ft (2.2m), 16s period, SW swell with 2,295 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 12PM (local time) - 3.5ft (1.1m), 14s 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 Tuesday (Aug 04) at 12PM. The primary swell is predicted to be 1.1m and 14s period with a secondary swell of 0.6m and 15s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Trespassers in the next 16 days are 2.2m 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 0.8m 4s period and expected on Saturday (Aug 08) at 3PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Tue 4th Aug) | 3.5ft (1.1m) 14s |
| Best Surf | 12AM (Fri 7th Aug) | 5ft (1.6m) 17s |
| Most Powerful | 3AM (Mon 3rd Aug) | 7ft (2.2m) 16s |
Table - best surf conditions forecast for Trespassers over the next 16 days.
The Lowdown
Alright, let’s talk Trespassers. This is a proper reef break, and it’s got a split personality. First few days are a washout, but if you’ve got patience, there’s some magic in the second week.
The start is grim. Sunday the 2nd and Monday the 3rd are a total loss – messy, lumpy, onshore wind, and the swell is just junk. You’d be mad to paddle out. Tuesday the 4th, the morning is still marginal, but the afternoon goes glassy with a 3ft swell from the SW, period of 14 seconds. The energy is weak (407), but it’s clean. That’s the first whisper.
Wednesday the 5th and Thursday the 6th are a tease. Wednesday morning has a 2ft, 19-second groundswell – crazy long period – but it’s small. That long period will make it break straight and fat on the reef, but it’s clean. Thursday afternoon is the real stand-out of the first week: 4ft from the SW, 19-second period, clean cross-offshore winds, and the energy jumps to 984. That’s a beautiful, lined-up reef wave. Small but pure.
Friday the 7th is when it gets serious. Morning is clean with 6ft, 19-second SW groundswell, energy at 2008. That’s moderate energy, and those long-period swells are what this reef loves. The afternoon is even better: 5ft, 17 seconds, clean, and the forecast says it’s excellent for experienced surfers. This is the first true highlight.
Then we hit a wall. Saturday the 8th through to Wednesday the 12th is a nightmare. Strong winds, onshore, messy, huge lumpy swells up to 12ft. The energy hits 5191 on Monday the 10th, but it’s howling onshore. That’s for kite surfers, not paddle surfers.
The second week brings the payoff. Thursday the 13th is a reset: clean, 5ft from the SW, 13 seconds, gentle breeze. A good, clean wave. But the true gold is Friday the 14th. Morning: 7ft, SSW, 17-second groundswell, glassy. Afternoon: 6ft, SSW, 16 seconds, glassy. Both are rated excellent for experienced surfers, with energy around 2309 and 1417. That’s the standout. Glassy, long-period, reef break, moderate energy. A dream.
Saturday the 15th is also a cracker: glassy afternoon, 6ft, 16-second SW swell, energy at 1831. Excellent conditions. The weekend of the 14th and 15th is the peak. The 16th and 17th ease off, but still clean and fun. The water temperature is about average for this time of year.
The crowds at Trespassers? It says “sometimes”, so you might have a few crew out, but on those glassy, quality days, it’ll be worth sharing the take-off zone.
Bottom line: the first week is a bust until Thursday and Friday. The true standouts are Friday the 14th and Saturday the 15th – glassy, long-period groundswell, perfect reef conditions. Mark your calendar.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sun afternoon. Very mild (max 14°C on Sun afternoon, min 11°C on Mon night). Winds decreasing (fresh winds from the W on Sun night, calm by Tue afternoon). | Days 5-7 Weather SummaryMostly dry. Very mild (max 15°C on Fri afternoon, min 10°C on Tue night). Wind will be generally light. | ||||||||||||||||||
Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | ||||||||||||||
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 | SSW 16 | SSW 15 | SW 16 | WSW 14 | WSW 14 | SW 13 | SW 12 | SW 14 | SSW 20 | SSW 19 | SW 18 | SSW 17 | SW 16 | SW 19 | SW 17 | SW 19 | SW 17 | SSW 16 |
Wave Graph | |||||||||||||||||||
1005 | 657 | 592 | 2113 | 1874 | 1453 | 769 | 398 | 407 | 280 | 325 | 327 | 481 | 358 | 920 | 1384 | 2008 | 1450 | 981 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | on | on | cross-on | cross-on | cross | cross-on | glassy | cross-off | cross-off | cross-on | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off |
High Tide | 5:23AM0.01m | 4:40PM0.02m | 6:06AM0.01m | 4:45PM0.02m | 6:58AM0.01m | 4:39PM0.02m | 8:18AM0.01m | 4:12PM0.02m | 3:06PM0.02m | 2:07PM0.02m | |||||||||
Low Tide | 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 | 00:39AM0.00m | 00:42AM0.00m | ||||||||
— | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — | |
— | — | 5:39 | — | — | 5:40 | — | — | 5:42 | — | — | 5:42 | — | — | 5:43 | — | — | 5:44 | — | |
mm | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 12 | 14 | 13 | 13 | 12 | 12 | 11 | 11 | 11 | 12 | 13 | 13 | 14 | 14 | 14 | 14 | 15 | 15 |
Feels °C | 7 | 4 | 7 | 6 | 7 | 6 | 8 | 9 | 9 | 9 | 9 | 9 | 10 | 11 | 12 | 10 | 11 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 15 | SSW 16 | WSW 14 | WSW 14 | SW 13 | SW 12 | SW 14 | SW 14 | SW 14 | SW 18 | SSW 17 | SW 16 | SW 19 | SW 17 | SW 19 | SW 17 | SSW 16 |
1005 | 657 | 592 | 458 | 1874 | 1453 | 769 | 398 | 407 | 194 | 211 | 327 | 481 | 358 | 920 | 1384 | 2008 | 1450 | 981 | |
Swell 2 Height (m) Direction Period (s) | WSW 7 | WSW 6 | — | — | — | — | SSW 18 | SW 15 | — | SSW 20 | SSW 19 | SW 13 | WSW 12 | SW 21 | WSW 13 | — | — | NW 5 | — |
10 | 22 | — | — | — | — | 31 | 145 | — | 280 | 325 | 138 | 30 | 69 | 64 | — | — | 1 | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | NW 5 | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | NNW 4 | NW 5 | WSW 6 | SW 16 | SW 14 | SW 14 | — | — | — | — | — | N 4 | — | — | — | — | NE 3 | NE 3 | NE 3 |
10 | 48 | 149 | 2113 | 1602 | 1201 | — | — | — | — | — | 2 | — | — | — | — | 2 | 1 | 2 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 100 | 651 | 160 | 546 | 499 | 499 | 13 | 13 | 0 | 0 | 14 | 14 | 0 | 0 | 0 | 0 | 18 | 0 | 18 |
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.











