Surf Forecasts:
Main Beach surf forecast from 6 Aug 2026:
- Best quality surf: Saturday 8 Aug, 8PM (local time) - 15ft (4.5m), 17s period, WSW swell with cross-onshore winds.
- Most powerful swell: Tuesday 11 Aug, 5AM (local time) - 18ft (5.5m), 17s period, WSW swell with 17,194 kJ wave energy.
- Next surfable swell (1★+): Saturday 8 Aug, 8PM (local time) - 15ft (4.5m), 17s period with WSW swell.
Best Forecast Surf Conditions for Main Beach this week:
The surf forecast for Main Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Aug 08) at 8PM. The primary swell is predicted to be 4.5m and 17s period with a secondary swell of 4.0m and 16s. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Main Beach in the next 16 days are 5.5m 17s and forecast to arrive on Tuesday (Aug 11) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 8th Aug) | 15ft (4.5m) 17s |
| Best Surf | 8PM (Sat 8th Aug) | 15ft (4.5m) 17s |
| Most Powerful | 5AM (Tue 11th Aug) | 18ft (5.5m) 17s |
Table - best surf conditions forecast for Main Beach over the next 16 days.
The Lowdown
Hey folks, Rusty here. Let’s get straight into it. We’ve got a solid 16-day window, but don’t be fooled – the first week is a rough one.
The main issue is that Main Beach is facing a lot of wind and size that’s just not going to play nice. The water is sitting at 62°F, which is 4°F colder than usual for this time of year – that’s a pretty noticeable chill, so you’ll want a thicker suit.
The first real chance to get wet doesn’t look great until Sunday the 9th. There’s a 10ft swell from the WSW with a long 17-second period, meaning some real energy pushing in, but it’s a cross-shore wind with a light breeze. It’s marginal, though. The waves will be there, but the tide is questionable. You could get a few, but it’s not a standout.
The real standout, and I mean the only one worth locking in the diary, is the morning of Wednesday the 12th. The wind drops to glassy – a dead calm 3 mph from the west. The swell is a solid 7ft from the WSW at 16 seconds. The conditions are described as excellent for experienced surfers. That 7ft is a bit much for beginners, but for anyone with a few seasons under their belt, that’s the cleanest, most lined-up window we’ve got. The long period means those waves will have some serious push, and at a beach/groyne setup, the sets will be defined. It’s the best on offer, hands down.
After that, the late weekend of the 16th and 17th shows some size, but the wind is messy again. The morning of the 19th looks promising with a 13ft swell from the WSW and a clean offshore wind, but that’s a big wave – over 8ft, so only for experts. And remember, that’s a bit further out, so keep an eye on it.
The last good chance is on Friday the 21st morning. A 10ft swell from the WSW with a cross-offshore breeze and clean conditions. Again, that’s big and for experienced surfers, but the consistency is there.
Overall, the first week is a write-off due to strong winds. Then we get a few isolated windows of clean, big surf. The best call is the glassy morning of Wednesday the 12th. Don’t get caught out by the wind.
Rusty.
Short Range ForecastHeavy rain (total 20mm), heaviest during Thu night. Very mild (max 18°C on Thu night, min 12°C on Sat morning). Winds decreasing (near gales from the SW on Fri night, light winds from the SE by Sat night). | Days 4-6 Weather SummaryHeavy rain (total 25mm), heaviest during Sun night. Very mild (max 16°C on Sun afternoon, min 9°C on Tue morning). Winds increasing (light winds from the NE on Sun morning, near gales from the SW by Mon night). | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 14 | WSW 16 | WSW 17 | WSW 17 | WSW 16 | WSW 15 | WSW 9 | WSW 12 | WSW 16 | WSW 17 | WSW 17 | WSW 16 | WSW 16 | WSW 15 | WSW 15 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3685 | 3213 | 1923 | 3291 | 3797 | 5019 | 6816 | 8947 | 8382 | 5149 | 3455 | 2651 | 2476 | 5108 | 15355 | 11983 | 8002 | 4919 | 2410 | 2813 | 2088 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | on | cross-on | cross-on | cross-on | cross | cross | on | on | on | cross-on | cross-on | cross-off | cross | cross | glassy | on | on |
High Tide | 4:03AM0.62m | 5:14AM0.67m | 6:20AM0.71m | 7:19AM0.74m | 8:13AM0.75m | 9:00AM0.72m | |||||||||||||||
Low Tide | 2:52PM0.14m | 3:04PM0.06m | 3:34PM-0.01m | 4:08PM-0.04m | 4:43PM-0.05m | 5:17PM-0.02m | 5:43PM0.04m | ||||||||||||||
 | |  |  |  | |  | |  | | | |  | |  | | |  | | | | |
 | 7:01 | — | — | 7:01 | — | — | 7:00 | — | — | 6:58 | — | — | 6:58 | — | — | 6:58 | — | — | 6:56 | — | — |
 | — | 5:43 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — |
mm | — | — | 8 | 2 | — | 5 | 3 | 1 | 1 | — | 2 | 8 | 4 | 3 | 7 | 1 | — | — | — | — | 3 |
Temp °C | 16 | 17 | 18 | 16 | 16 | 17 | 13 | 14 | 14 | 13 | 16 | 16 | 16 | 14 | 12 | 11 | 15 | 16 | 15 | 16 | 17 |
Feels °C | 12 | 12 | 14 | 11 | 10 | 8 | 2 | 6 | 6 | 11 | 11 | 10 | 7 | 3 | -1 | 7 | 10 | 11 | 14 | 13 | 15 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | WSW 16 | WSW 16 | WSW 15 | — | — | — | NW 12 | WSW 17 | WSW 17 | WSW 16 | WSW 19 | — | — | — | WSW 17 | — | — | WSW 16 | WSW 15 | WSW 15 |
| kJ | 3685 | 3213 | 1923 | 3291 | — | — | — | 6 | 8382 | 5149 | 3455 | 391 | — | — | — | 11983 | — | — | 2410 | 2813 | 2088 |
Swell 2 Height (m) Direction Period (s) | — | — | W 10 | — | — | — | — | — | — | — | WSW 21 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 18 | — | — | — | — | — | — | — | 356 | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | NW 11 | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | 5 | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | WSW 9 | — | WSW 15 | WSW 15 | WSW 14 | WSW 16 | — | — | — | WSW 15 | WSW 9 | WSW 12 | WSW 16 | — | WSW 17 | WSW 16 | WSW 8 | — | — |
| kJ | — | — | 417 | — | 3797 | 5019 | 6816 | 8947 | — | — | — | 2651 | 2476 | 5108 | 15355 | — | 8002 | 4919 | 229 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 357 | 369 | 147 | 400 | 400 | 1993 | 1993 | 2462 | 497 | 15 | 400 | 400 | 913 | 1983 | 2149 | 1 | 497 | 147 | 0 | 400 | 12 |
Best forecast wave conditions in Perth City Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the Main Beach Surf forecast
The above surf forecast table for Main Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Main Beach can be found by selecting the local surf guide option on the grey menu. Our Main 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 (Main 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 Main 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 Main Beach, camping, hotels and holiday cottages in Perth City Coast, consider staying in Perth which is 7 km (4 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 9 km (6 miles) away, Canning Vale, Gosnells and Kwinana.
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