Surf Forecasts:
Back Beach surf forecast from 18 Sep 2026:
- Best quality surf: Saturday 19 Sep, 8PM (local time) - 11ft (3.5m), 14s period, WSW swell with cross-onshore winds.
- Most powerful swell: Saturday 19 Sep, 8AM (local time) - 15ft (4.5m), 15s period, WSW swell with 7,711 kJ wave energy.
- Next surfable swell (1★+): Saturday 19 Sep, 8PM (local time) - 11ft (3.5m), 14s 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 19) at 8PM. The primary swell is predicted to be 3.5m and 14s period. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Back Beach in the next 16 days are 4.5m 15s and forecast to arrive on Saturday (Sep 19) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 19th Sep) | 11ft (3.5m) 14s |
| Best Surf | 8PM (Sat 19th Sep) | 11ft (3.5m) 14s |
| Most Powerful | 8AM (Sat 19th Sep) | 15ft (4.5m) 15s |
Table - best surf conditions forecast for Back Beach over the next 16 days.
Short Range ForecastLight rain (total 2mm), mostly falling on Fri night. Warm (max 23°C on Fri morning, min 14°C on Sun night). Winds decreasing (strong winds from the NW on Fri afternoon, light winds from the ENE by Sun night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 18°C on Mon afternoon, min 13°C on Tue night). Winds increasing (light winds from the E on Mon morning, fresh winds from the S by Wed afternoon). | ||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | Tuesday 22 | Wednesday 23 | Thursday 24 | |||||||||||||||
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 16 | W 17 | WSW 16 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | SW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 14 | WSW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 422 | 3194 | 1652 | 7664 | 7214 | 3092 | 1677 | 1597 | 3197 | 3316 | 3287 | 2581 | 1647 | 1748 | 1805 | 1497 | 1117 | 636 | 822 | 1080 | 902 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross | cross-on | cross-on | cross-on | on | cross-on | cross-off | on | cross-on | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-on | on | on | cross-on |
High Tide | 00:41AM0.55m | 2:59AM0.52m | 5:07AM0.53m | 6:12AM0.54m | 7:02AM0.54m | 10:06PM0.35m | 7:47AM0.53m | 9:38PM0.38m | |||||||||||||
Low Tide | 2:13PM0.12m | 2:31PM0.11m | 2:48PM0.10m | 3:01PM0.10m | 3:10PM0.11m | 3:15PM0.13m | 00:44AM0.34m | 3:18PM0.15m | 2:06AM0.29m | ||||||||||||
 | |  | | |  |  |  |  | | | | | | | | | | | | | |
 | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:09 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | 6:12 | — | — | 6:12 | — | — | 6:13 | — | — | 6:14 | — | — | 6:14 | — | — | 6:15 | — | — | 6:15 | — |
mm | — | — | 1 | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 23 | 17 | 17 | 18 | 17 | 17 | 18 | 17 | 17 | 18 | 16 | 17 | 17 | 16 | 17 | 17 | 17 | 17 | 17 | 15 |
Feels °C | 18 | 15 | 10 | 9 | 11 | 13 | 17 | 17 | 15 | 16 | 16 | 12 | 13 | 12 | 12 | 15 | 13 | 14 | 13 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | WSW 12 | — | WSW 16 | — | WSW 14 | WSW 13 | WSW 13 | WSW 13 | SW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 14 | WSW 13 |
| kJ | 371 | — | 1652 | — | 6588 | 3092 | 1677 | 1597 | 3197 | 3316 | 3287 | 2581 | 1647 | 1748 | 1805 | 1497 | 1117 | 636 | 822 | 1080 | 902 |
Swell 2 Height (m) Direction Period (s) | WSW 16 | — | — | — | — | — | SW 16 | SW 15 | — | — | — | — | — | — | — | — | — | SSW 6 | SW 15 | SW 24 | WSW 24 |
| kJ | 422 | — | — | — | — | — | 93 | 438 | — | — | — | — | — | — | — | — | — | 82 | 335 | 24 | 113 |
Swell 3 Height (m) Direction Period (s) | WSW 20 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 75 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NW 4 | W 17 | W 9 | WSW 14 | WSW 14 | — | — | — | — | — | — | — | — | — | — | — | S 4 | — | — | SSW 4 | SSW 4 |
| kJ | 9 | 3194 | 1098 | 7664 | 7214 | — | — | — | — | — | — | — | — | — | — | — | 33 | — | — | 7 | 17 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 438 | 438 | 542 | 1018 | 1951 | 178 | 90 | 289 | 0 | 120 | 265 | 50 | 265 | 265 | 111 | 120 | 265 | 111 | 326 | 289 | 71 |
Best forecast wave conditions in Perth City Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Back Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
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