
Surf Forecasts:
Trespassers surf forecast from 26 Jul 2026:
- Best quality surf: Thursday 30 Jul, 9AM (local time) - 4ft (1.2m), 13s period, SSW swell with glassy winds.
- Most powerful swell: Wednesday 29 Jul, 3AM (local time) - 8ft (2.4m), 16s period, SSW swell with 3,048 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 9AM (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 9AM. The primary swell is predicted to be 1.2m and 13s period with a secondary swell of 0.4m 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 16s and forecast to arrive on Wednesday (Jul 29) 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 Saturday (Aug 01) at 9PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Thu 30th Jul) | 4ft (1.2m) 13s |
| Best Surf | 9AM (Thu 30th Jul) | 4ft (1.2m) 13s |
| Most Powerful | 3AM (Wed 29th Jul) | 8ft (2.4m) 16s |
Table - best surf conditions forecast for Trespassers over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s take a look at the 16-day window for Trespassers, a reef break that only works on a solid SSW swell. The first week has some pulse, but the wind is mostly a mess. The early days are a write-off, but there’s a definite window of clean conditions towards the end of the first week and into the second week that’s worth waiting for.
We kick off on Monday, July 27, but it’s not really surfable. A 3ft to 3.5ft SW swell at 13 seconds is coming in, but the wind is a fresh cross-shore from the NNW at 19 mph, turning it into lumpy cross-chop. The wave energy is moderate (413-482), but the conditions are poor. Tuesday, July 28, sees a jump in swell to 7ft from the SW, with a better 15-second period, but the wind is howling onshore from the WSW at 22 mph. That’s blown out and messy. The combined energy is very strong (2142-2010), but it’s a no-go for surfing.
Wednesday, July 29, the swell is still a solid 7ft from the SSW at 16 seconds (2717 energy), but it’s a cross-onshore wind from the SW at 9 mph, making it choppy. The surf is marginal. The water temp is about average for the time of year, nothing unusual. The bigger sets are over 8ft, so this is expert territory only.
Then things change. Thursday, July 30, is the standout of the first week. The swell drops to a clean 4ft from the SSW, with a 13-second period, and the wind becomes glassy – a light SE at 3 mph in the morning, then a glassy SSW at 3 mph in the afternoon. The wave energy is moderate (483-394), but the conditions are excellent. This is the best window for a surfer who can handle a reef break. The crowds are listed as “sometimes” possible, so expect company.
Friday, July 31, is a smaller day with a 2.5ft SW swell. The wind is a light cross-offshore from the NE and NNE at 6-9 mph, making it clean. The energy is weak (213-332), but it’s surfable. Good for a longboard or a small-wave board.
Saturday, August 1, the swell builds back to 4ft from the SSW, but the period jumps to 19 seconds – a very long groundswell. The wind is a moderate cross-shore from the north at 12-16 mph, creating a cross-chop. The energy is strong (1147), but the conditions are marginal. The long period will make it break straight at a beach, but for a reef like Trespassers, it could be lined up, but the wind is the problem.
Sunday, August 2, is a write-off with a strong cross-onshore wind and lumpy 6ft swell.
The first week has a good window on Thursday, July 30, for clean, glassy conditions. The best option is that morning session.
Now, moving into the second week. The pattern is up and down, but there is a solid window.
Monday, August 3, and Tuesday, August 4, see a drop in swell. Tuesday, August 4, is the pick of the early week. A 4ft to 3.5ft SW swell with a light cross-offshore from the SSE at 3 to 6 mph. The energy is moderate (532-390), and the conditions are clean. Wednesday, August 5, is the absolute standout of the entire forecast. The swell is 3.5ft to 4.5ft from the SSW, with a very long period of 16 to 19 seconds. The wind is light and offshore from the SE, then glassy from the SSE. The wave energy is moderate to strong (723-1137), and the conditions are very good. This is a classic clean groundswell for the reef. The long period will make the sets line up perfectly. A top-tier day.
Thursday, August 6, still has clean conditions with a 3ft SSW swell and a moderate offshore wind from the east at 9-12 mph. Clean, but smaller.
Friday, August 7, through Sunday, August 9, deteriorates quickly with strong cross-shore and onshore winds, making the surf poor. The swell is there, but it’s blown out. Sunday, August 9, has a near gale cross-onshore from the NW at 31 mph, with 5.5ft of swell – completely unsurfable. That’s kite-surfing territory, not paddle surfing.
Monday, August 10, is still messy with strong cross-onshore winds and 6ft of swell. Poor.
The outlook brightens on Tuesday, August 11. A 4ft SW swell with a light cross-offshore wind from the NE at 6 mph. The energy is moderate (584), and the conditions are clean. A solid end to the window.
The true standouts are Thursday, July 30, and Wednesday, August 5. The 5th is the bigger, cleaner, longer-period swell. If you’re an expert, that’s the one to circle. The gap between these two good days is a few days of wind, but the second week has a longer clean run.
R
Short Range ForecastLight rain (total 2mm), mostly falling on Mon night. Very mild (max 16°C on Mon afternoon, min 11°C on Tue night). Winds increasing (light winds from the N on Sun night, strong winds from the NW by Mon afternoon). | Days 5-7 Weather SummaryMostly dry. Very mild (max 13°C on Thu afternoon, min 10°C on Fri morning). Wind will be generally light. | ||||||||||||||||||
Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | ||||||||||||||
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 12 | SW 13 | SW 13 | WSW 12 | SW 15 | SW 15 | SW 15 | SSW 16 | SSW 15 | SW 14 | SSW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SSW 18 | SSW 17 | SSW 19 | SW 17 |
Wave Graph | |||||||||||||||||||
190 | 299 | 380 | 939 | 1976 | 2010 | 2465 | 2359 | 1428 | 765 | 465 | 394 | 245 | 167 | 183 | 209 | 351 | 983 | 1207 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | on | on | on | cross-on | cross-on | cross-on | cross | glassy | glassy | off | cross-off | cross-off | cross-off | cross | cross | cross |
High Tide | 2:07AM0.00m | 3:17PM0.02m | 2:36AM0.01m | 3:36PM0.02m | 3:04AM0.01m | 3:53PM0.02m | 3:34AM0.01m | 4:03PM0.02m | 4:03AM0.01m | 4:21PM0.02m | 4:39AM0.01m | 4:32PM0.02m | |||||||
Low Tide | 00:09AM0.00m | 6:40AM0.00m | 11:30PM0.01m | 7:33AM0.00m | 11:19PM0.00m | 8:09AM0.00m | 11:18PM0.00m | 8:40AM0.00m | 11:23PM0.00m | 9:07AM0.00m | 11:26PM0.00m | 9:34AM0.00m | 11:41PM0.00m | ||||||
— | 7:20 | — | — | 7:20 | — | — | 7:20 | — | — | 7:18 | — | — | 7:18 | — | — | 7:16 | — | — | |
— | — | 5:36 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:38 | — | |
mm | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 14 | 16 | 14 | 13 | 13 | 12 | 13 | 13 | 12 | 12 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 14 |
Feels °C | 11 | 8 | 8 | 7 | 6 | 5 | 5 | 9 | 8 | 8 | 10 | 10 | 9 | 9 | 9 | 8 | 7 | 7 | 8 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 13 | SW 13 | WSW 12 | SSW 16 | — | SW 13 | SSW 16 | SSW 15 | SW 14 | SSW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SSW 13 | SSW 17 | SSW 19 | SW 17 |
190 | 299 | 380 | 939 | 166 | — | 437 | 2359 | 1428 | 765 | 465 | 394 | 245 | 167 | 183 | 151 | 351 | 983 | 1207 | |
Swell 2 Height (m) Direction Period (s) | SW 15 | SSW 13 | SW 8 | — | — | — | SSW 16 | SW 16 | W 8 | W 8 | WSW 7 | — | SW 23 | SSW 21 | SSW 20 | SSW 18 | SW 22 | SSW 20 | W 4 |
56 | 68 | 29 | — | — | — | 203 | 358 | 84 | 43 | 18 | — | 20 | 44 | 149 | 209 | 73 | 154 | 2 | |
Swell 3 Height (m) Direction Period (s) | SSW 15 | SW 13 | SW 10 | — | — | — | — | — | — | — | — | — | SW 22 | S 9 | — | — | — | — | — |
21 | 28 | 28 | — | — | — | — | — | — | — | — | — | 19 | 2 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | NNW 4 | NW 5 | W 6 | SW 15 | SW 15 | SW 15 | — | — | — | — | — | — | — | NNE 3 | — | N 3 | NNW 4 | N 4 |
— | 18 | 45 | 95 | 1976 | 2010 | 2465 | — | — | — | — | — | — | — | 1 | — | 4 | 10 | 6 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 17 | 159 | 480 | 732 | 1040 | 1034 | 1193 | 59 | 256 | 11 | 0 | 0 | 0 | 0 | 0 | 18 | 100 | 79 | 100 |
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.










