
Surf Forecasts:
Back Beach surf forecast from 18 Jul 2026:
- Best quality surf: Sunday 19 Jul, 5AM (local time) - 11ft (3.5m), 15s period, WSW swell with onshore winds.
- Most powerful swell: Sunday 19 Jul, 5AM (local time) - 11ft (3.5m), 15s period, WSW swell with 5,119 kJ wave energy.
- Next surfable swell (1★+): Sunday 19 Jul, 5AM (local time) - 11ft (3.5m), 15s 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 Sunday (Jul 19) at 5AM. The primary swell is predicted to be 3.5m and 15s period. The wind is predicted to be onshore as the swell arrives.
The most powerful waves expected at Back Beach in the next 16 days are 3.5m 15s and forecast to arrive on Sunday (Jul 19) at 5AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Wednesday (Jul 22) at 11PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Sun 19th Jul) | 11ft (3.5m) 15s |
| Best Surf | 5AM (Sun 19th Jul) | 11ft (3.5m) 15s |
| Most Powerful | 5AM (Sun 19th Jul) | 11ft (3.5m) 15s |
Table - best surf conditions forecast for Back Beach over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at the only game in town for the next couple of weeks.
We’re looking at Back Beach. This is a consistent, exposed spot, but it’s a beginner-friendly break, so keep that in mind. The water temp is about average for this time of year, nothing wild.
Right now, we’re in a bit of a tricky spot. The first day, Sunday the 19th, is a total write-off. The swell is a massive 10ft from the WSW, and with a very long 14-second period, the wave energy is cranking (3380). That’s way too big for this break, and the onshore wind won’t help. Not for paddling.
Monday the 20th morning is a real standout. The swell drops to 6ft from the WSW, still a solid 13-second period, but the wind is dead calm – glassy conditions. The wave energy is still very strong (1162), but for experienced surfers, this is the best window in the near term. The wind is perfect, and the waves will be clean.
Tuesday the 21st morning is also worth a mention. Swell is 5ft from the SW, 14-second period, and again, glassy conditions with a light breeze. The energy is solid (1041). Clean, lined-up waves for the experienced crew.
The rest of that week and into the next is a mixed bag of clean but cross-off winds, or choppy conditions. The swell hangs around 5ft to 8ft, which is pushing it for beginners, but there are some clean windows. Thursday the 24th morning, for example, has 5ft swell from the SW with a moderate offshore breeze – clean and workable.
Then we hit a big gap. From Sunday the 26th through to Thursday the 30th, the surf quality drops off a cliff. The winds are onshore, the swell is messy, and the scores are poor. It’s a rough patch of nearly five days where you’re better off doing something else.
The real firecracker is at the end of the run. Friday the 31st morning is a serious standout. The swell jumps to 8ft from the WSW with a very long 17-second period. The energy is huge (2986), but the wind is a light offshore breeze. This is a powerful, clean groundswell. It’s big, so it’s experts only, but the quality will be there.
Then on Saturday the 1st of August, it gets absolutely wild. A 15ft swell from the west with a 13-second period and an offshore wind. The combined energy is a massive 6080. That’s just too big and powerful for Back Beach. The setup is more interesting for kite surfing or just watching from the car park. The same goes for Sunday the 2nd.
The final look is Monday the 3rd of August. The swell drops to a still-chunky 8ft from the SW, 14-second period, and the wind is glassy. That’s another excellent window for experienced surfers, with clean, powerful lines.
So, to wrap it up: Monday the 20th morning is the best bet for the first week, with glassy conditions and a solid 6ft swell. For the second week, the standouts are Friday the 31st morning and Monday the 3rd of August morning, both offering big, clean groundswell for the experts. The long-range stuff looks promising, but keep an eye on it.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Sun afternoon, min 11°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 17°C on Thu afternoon, min 10°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||
Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | |||||||||||||||
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) | WSW 14 | WSW 14 | WSW 13 | WSW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | WSW 13 | WSW 13 | WSW 12 |
Wave Graph | |||||||||||||||||||||
3380 | 2534 | 1575 | 1162 | 1077 | 1187 | 1138 | 1558 | 1223 | 1346 | 1050 | 2233 | 1626 | 1236 | 780 | 486 | 456 | 319 | 624 | 569 | 339 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | off | glassy | cross-on | cross-on | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | off | off |
High Tide | 10:07AM0.42m | 2:46AM0.43m | 8:42AM0.38m | 3:13AM0.49m | 3:52AM0.53m | 4:37AM0.56m | 5:26AM0.59m | 6:15AM0.61m | |||||||||||||
Low Tide | 6:14PM0.22m | 7:09AM0.38m | 5:53PM0.20m | 5:28PM0.18m | 4:24PM0.14m | 4:07PM0.11m | 4:17PM0.08m | 4:34PM0.06m | |||||||||||||
7:13 | — | — | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | 7:11 | — | — | |
— | 5:36 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:39 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 17 | 16 | 14 | 16 | 16 | 15 | 16 | 15 | 12 | 15 | 15 | 13 | 17 | 16 | 14 | 17 | 17 | 15 | 18 | 17 |
Feels °C | 13 | 14 | 13 | 13 | 12 | 12 | 14 | 14 | 11 | 7 | 10 | 10 | 7 | 13 | 12 | 9 | 13 | 13 | 10 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | WSW 14 | WSW 14 | WSW 13 | WSW 13 | SW 13 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | WSW 13 | WSW 13 | WSW 12 |
3380 | 2534 | 1575 | 1162 | 1077 | 1187 | 1138 | 1558 | 1223 | 1346 | 1050 | 2233 | 1626 | 1236 | 780 | 486 | 456 | 319 | 624 | 569 | 339 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | SW 16 | — | W 20 | — | WSW 18 | — | SW 16 | — | — | W 20 | WSW 18 | WSW 16 | WSW 16 | WSW 14 | — | SW 19 | WSW 18 |
— | — | — | — | 69 | — | 7 | — | 30 | — | 1039 | — | — | 7 | 61 | 89 | 87 | 239 | — | 55 | 204 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNW 5 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | ESE 4 | ESE 3 | ESE 4 | E 3 | — | ENE 3 | NE 3 | NNE 4 | NE 3 | NE 3 | NNW 5 | NE 2 |
— | — | — | — | — | — | — | — | — | 7 | 3 | 10 | 5 | — | 1 | 3 | 3 | 2 | 5 | 8 | 1 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 115 | 251 | 0 | 0 | 265 | 50 | 0 | 251 | 85 | 3 | 3 | 3 | 3 | 0 | 3 | 0 | 0 | 3 | 0 | 0 | 0 |
Best forecast wave conditions in Perth City Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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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.










