Surf Forecasts:
Trigg Beach surf forecast from 15 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 2AM (local time) - 11ft (3.5m), 15s period, WSW swell with cross-onshore winds.
- Most powerful swell: Monday 17 Aug, 8PM (local time) - 13ft (4.0m), 17s period, WSW swell with 8,204 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 2AM (local time) - 11ft (3.5m), 15s period with WSW swell.
Best Forecast Surf Conditions for Trigg Beach this week:
The surf forecast for Trigg Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 2AM. The primary swell is predicted to be 3.5m and 15s period with a secondary swell of 2.4m and 10s. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Trigg Beach in the next 16 days are 4.0m 17s and forecast to arrive on Monday (Aug 17) at 8PM. 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 3s period and expected on Sunday (Aug 16) at 11PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 18th Aug) | 11ft (3.5m) 15s |
| Best Surf | 2AM (Tue 18th Aug) | 11ft (3.5m) 15s |
| Most Powerful | 8PM (Mon 17th Aug) | 13ft (4.0m) 17s |
Table - best surf conditions forecast for Trigg Beach over the next 16 days.
The Lowdown
Alright, Rusty here, let’s talk about what’s heading our way.
We’ve got a solid run of swell on the horizon, but it’s not all smooth sailing. The first few days are messy, with a big pulse of energy that’s more about power than quality. Then things clean up, and the back half of the period looks promising.
For Sunday the 16th, Trigg Beach is the only game in town, and it’s a bit of a mixed bag. We've got a 6ft to 7ft WSW groundswell with a long 16-second period, pushing moderate to strong combined energy (1766-2066). The wind is cross-off from the NNE, so it’ll be clean, but the wave comment says it’s marginal. It’s surfable, but not the best.
Monday the 17th is a write-off. The wind swings onshore and ramps up, the swell gets jumbled, and the energy jumps but with no quality. Tuesday the 18th is a different story – the swell hits 12ft with very strong energy (6070-6270) and it goes glassy in the morning. It's huge though. For an intermediate spot like Trigg, that’s expert territory. The wave comment says it’s too big for this break. The water temp anomaly is about average for this time of year.
Wednesday the 19th and Thursday the 20th are still on the big side, with 8ft to 10ft of swell, but the wind is on it or cross-shore, so it’s lumpy and marginal.
The first real standout is Friday the 21st. The swell drops to a cleaner 8ft, still a long-period WSW groundswell (15 seconds). Combined energy is strong (2843-3282). But the wind goes offshore from the ENE and E – glassy clean conditions. The comment says *excellent surf conditions for experienced surfers*. That’s the window. It’s big but not insane, and the offshore wind will hold it open nicely on the point. Crowds are often here, so you won’t be alone.
After that, Saturday the 22nd drops off a bit with smaller swell and cross-shore wind. Sunday the 23rd is another clean one with offshore wind and a gentler 6ft swell – good for a wider range of skill levels.
We hit another lull from Monday the 24th through Thursday the 28th. The swell drops right down, and when it tries to build again, the wind is on it and messy. Not worth paddling out.
The second standout is Saturday the 29th and Sunday the 30th. This is the long-range call. Saturday morning the 29th shows an 8ft WSW groundswell with a cracking 18-second period – very long period groundswell. Combined energy is very strong (4726). It’s glassy offshore. The comment says *excellent surf conditions for experienced surfers*. That long period will break really straight on a beach break, but Trigg is a beach and point, so the point should help shape it up. This is a potential classic for those who can handle it. Sunday the 30th keeps the size at 10ft with clean cross-off wind. Again, expert territory.
Monday the 31st looks good on paper with 12ft and glassy conditions, but that’s getting too big for this spot again.
So the best bets are the clean Friday the 21st and the long-period glass on Saturday the 29th. Mark your calendar.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Mon afternoon. Warm (max 22°C on Sun afternoon, min 13°C on Tue morning). Winds decreasing (strong winds from the WSW on Mon afternoon, calm by Tue morning). | Days 5-7 Weather SummarySome drizzle, heaviest during Wed night. Very mild (max 19°C on Fri afternoon, min 10°C on Fri morning). Wind will be generally light. | ||||||||||||||||||
Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | ||||||||||||||
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) | WSW 13 | WSW 16 | WSW 15 | WSW 15 | WSW 16 | WSW 17 | WSW 15 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | SW 16 |
Wave Graph | |||||||||||||||||||
987 | 1766 | 1847 | 2237 | 2274 | 7024 | 6040 | 6070 | 6270 | 4181 | 2581 | 3623 | 5271 | 5043 | 3936 | 2997 | 2843 | 3282 | 3238 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-on | on | cross-on | glassy | on | on | cross-on | on | cross-on | on | cross | cross-off | off | off | off |
High Tide | 00:07AM0.42m | 10:37AM0.41m | 00:19AM0.48m | 9:30AM0.35m | 00:36AM0.52m | 8:35AM0.33m | 1:01AM0.55m | 1:44AM0.56m | 3:25AM0.56m | 4:59AM0.57m | |||||||||
Low Tide | 5:06AM0.30m | 5:00PM0.23m | 6:12AM0.31m | 4:49PM0.21m | 7:36AM0.33m | 4:33PM0.19m | 3:39PM0.16m | 3:20PM0.13m | 3:31PM0.10m | ||||||||||
— | 6:52 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | |
5:49 | — | 5:50 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | |
mm | — | — | — | — | — | 7 | 1 | — | — | — | — | — | 1 | — | — | — | — | — | — |
Temp °C | 19 | 20 | 22 | 20 | 18 | 16 | 16 | 15 | 16 | 16 | 17 | 17 | 17 | 15 | 17 | 16 | 15 | 19 | 18 |
Feels °C | 17 | 13 | 16 | 16 | 13 | 9 | 10 | 14 | 12 | 13 | 14 | 13 | 15 | 14 | 13 | 12 | 11 | 17 | 14 |
Swell 1 Height (m) Direction Period (s) | WSW 13 | WSW 16 | WSW 15 | WSW 15 | WSW 16 | — | WSW 15 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | SW 16 |
987 | 1766 | 1847 | 2237 | 2274 | — | 6040 | 6070 | 6270 | 4181 | 2581 | 3623 | 5271 | 5043 | 3936 | 2997 | 2843 | 3282 | 3238 | |
Swell 2 Height (m) Direction Period (s) | — | — | W 20 | — | — | — | W 10 | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | 202 | — | — | — | 1184 | — | — | — | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 18 | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | 422 | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | N 4 | N 5 | NNE 4 | NW 5 | WSW 17 | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | 13 | 17 | 19 | 51 | 7024 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 279 | 108 | 112 | 1126 | 611 | 160 | 1 | 364 | 299 | 288 | 160 | 59 | 233 | 200 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Perth City Coast | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
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Information about the Trigg Beach Surf forecast
The above surf forecast table for Trigg Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Trigg Beach can be found by selecting the local surf guide option on the grey menu. Our Trigg Beach 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 (Trigg Beach) 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 Trigg Beach 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 Perth City Coast? If you are looking for accommodation near Trigg Beach, camping, hotels and holiday cottages in Perth City Coast, consider staying in Perth which is 14 km (9 miles) away. Other places in and around Perth City Coast where you can find information about places to rent, and car hire include Fremantle which is 21 km (13 miles) away, Canning Vale, Gosnells and Kwinana.











