
Surf Forecasts:
Back Beach surf forecast from 5 Sep 2026:
- Best quality surf: Sunday 6 Sep, 2PM (local time) - 10ft (3.0m), 13s period, SW swell with cross-shore winds.
- Most powerful swell: Monday 7 Sep, 2AM (local time) - 11ft (3.5m), 18s period, WSW swell with 7,938 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 11PM (local time) - 7ft (2.2m), 13s period with WSW swell.
Best Forecast Surf Conditions for Back Beach this week:
The surf forecast for Back Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Sep 05) at 11PM. The primary swell is predicted to be 2.2m and 13s period with a secondary swell of 0.1m and 24s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Back Beach in the next 16 days are 3.5m 18s and forecast to arrive on Monday (Sep 07) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Tuesday (Sep 08) at 8PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sat 5th Sep) | 7ft (2.2m) 13s |
| Best Surf | 2PM (Sun 6th Sep) | 10ft (3.0m) 13s |
| Most Powerful | 2AM (Mon 7th Sep) | 11ft (3.5m) 18s |
Table - best surf conditions forecast for Back Beach over the next 16 days.
The Lowdown
G’day, it’s Rusty. Right, let’s have a look at the next stretch for Back Beach. The long story short is we’re in for a wild ride of plenty of swell, but the wind’s going to be the deciding factor on whether it’s any good for a paddle. For the first few days, it’s going to be too big and messy for most, so you might want to keep the board in the car.
The water’s sitting at 65° which is pretty much spot on for this time of year, so no dramas there.
Now, the first real window where things start to come together is Thursday the 10th. We’ve got a drop in size to around 6ft from the WSW, and the wind goes offshore from the NE. The energy is moderate at 1714, but that offshore wind is the key. It’ll be clean and lined up. Morning looks best, with the afternoon easing to 6ft and the wind going light cross-off. This is the standout of the first week for sure.
The next few days after that are pretty poor. Friday the 11th has onshore winds and a jumpy period, so it’s a write-off. Saturday the 12th is small and cross-onshore, not great. And Sunday the 13th brings rain and onshore winds, forget it.
Now, looking further out, there’s a couple of bigger pulses coming through that are just going to be too solid. From Monday the 14th, we start seeing 10ft again, and even though the wind is favorable for a lot of it, the call is that it’s just too big for this break. That trend continues through the week, with more big, powerful WSW swell on the 19th, pushing 15ft on Saturday afternoon. That’s for the experts only, and even then, it’s going to be a washing machine with the cross-onshore wind. This whole spell through the second week looks more interesting for the kite crew than for us paddle surfers.
So, for your best bet: Thursday the 10th is the one to circle. It’s the cleanest, most manageable window we get, and it’s only a week away. Everything else, it’s either too big, too messy, or just plain poor.
Rusty.
Short Range ForecastLight rain (total 8mm), mostly falling on Sat night. Very mild (max 19°C on Mon afternoon, min 10°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 24°C on Thu afternoon, min 9°C on Wed morning). Winds decreasing (fresh winds from the ESE on Tue afternoon, light winds from the NW by Thu night). | |||||||||||||||||||
Sat 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | ||||||||||||||
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) | WSW 14 | WSW 13 | SW 13 | SW 13 | WSW 18 | WSW 17 | WSW 16 | WSW 16 | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 14 | WSW 15 | WSW 14 | WSW 19 | WSW 18 |
Wave Graph | ||||||||||||||||||||
2635 | 1384 | 3686 | 2936 | 7938 | 5619 | 4478 | 3691 | 5769 | 5552 | 4432 | 3936 | 3211 | 2483 | 1496 | 1130 | 1052 | 956 | 1066 | 3067 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross | cross | cross | cross | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | off | cross-on | cross | cross-on |
High Tide | 4:44AM0.63m | 6:05AM0.64m | 7:09AM0.64m | 8:03AM0.62m | 11:07PM0.32m | 8:50AM0.58m | 10:24PM0.35m | 9:32AM0.51m | 10:19PM0.41m | |||||||||||
Low Tide | 2:35PM0.02m | 3:07PM-0.01m | 3:38PM-0.00m | 4:04PM0.03m | 4:24PM0.09m | 1:14AM0.31m | 4:30PM0.16m | 2:50AM0.28m | 4:18PM0.22m | 3:53AM0.25m | ||||||||||
— | — | 6:28 | — | — | 6:28 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:22 | — | — | |
6:04 | — | — | 6:05 | — | — | 6:06 | — | — | 6:06 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | |
mm | — | 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 17 | 15 | 14 | 17 | 15 | 16 | 19 | 16 | 16 | 19 | 18 | 15 | 20 | 19 | 19 | 24 | 19 | 19 | 19 | 19 |
Feels °C | 12 | 13 | 7 | 11 | 9 | 11 | 14 | 11 | 10 | 12 | 14 | 9 | 14 | 16 | 15 | 23 | 17 | 17 | 15 | 16 |
Swell 1 Height (m) Direction Period (s) | WSW 14 | WSW 13 | SW 13 | SW 13 | WSW 18 | WSW 17 | WSW 16 | WSW 16 | WSW 17 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 14 | WSW 15 | WSW 14 | WSW 14 | WSW 18 |
2635 | 1384 | 3686 | 2936 | 7938 | 5619 | 4478 | 3691 | 5769 | 5552 | 4432 | 3936 | 3211 | 2483 | 1496 | 1130 | 1052 | 956 | 943 | 3067 | |
Swell 2 Height (m) Direction Period (s) | — | W 23 | WSW 20 | WSW 19 | — | — | — | — | — | — | — | — | — | WSW 26 | WSW 24 | WSW 24 | WSW 21 | WSW 19 | WSW 19 | WSW 13 |
— | 10 | 158 | 758 | — | — | — | — | — | — | — | — | — | 66 | 218 | 217 | 404 | 716 | 1066 | 361 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | SE 4 | SE 4 | — | ESE 4 | ESE 4 | — | ENE 4 | ENE 4 | — | ENE 3 | — | WNW 4 | WNW 5 |
— | — | — | — | — | — | — | 9 | 16 | — | 14 | 17 | — | 10 | 7 | — | 6 | — | 9 | 44 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 480 | 178 | 287 | 184 | 125 | 121 | 184 | 240 | 307 | 113 | 240 | 340 | 3 | 3 | 0 | 0 | 0 | 377 | 515 | 225 |
Best forecast wave conditions in Perth City Coast | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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Information about the Back Beach Surf forecast
The above surf forecast table for Back Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Back Beach can be found by selecting the local surf guide option on the grey menu. Our Back 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 (Back 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 Back 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 Back Beach, camping, hotels and holiday cottages in Perth City Coast, consider staying in Perth which is 125 km (78 miles) away.










