Surf Forecasts:
Watermans surf forecast from 20 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 8PM (local time) - 13ft (4.0m), 17s period, WSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 26 Aug, 2PM (local time) - 13ft (4.0m), 19s period, WSW swell with 10,846 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 2AM (local time) - 8ft (2.5m), 16s period with WSW swell.
Best Forecast Surf Conditions for Watermans this week:
The surf forecast for Watermans over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 2AM. The primary swell is predicted to be 2.5m and 16s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Watermans in the next 16 days are 4.0m 19s and forecast to arrive on Wednesday (Aug 26) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Friday (Aug 21) at 8PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 21st Aug) | 8ft (2.5m) 16s |
| Best Surf | 8PM (Wed 26th Aug) | 13ft (4.0m) 17s |
| Most Powerful | 2PM (Wed 26th Aug) | 13ft (4.0m) 19s |
Table - best surf conditions forecast for Watermans over the next 16 days.
The Lowdown
Alright, let’s talk about the next couple of weeks at Watermans.
The surf outlook is a bit of a mixed bag. We’ve got some solid swell on the horizon, but a lot of those days are going to be battling windy conditions. The water temp is about average for this time of year, nothing to write home about.
The standout session is Friday morning, August 21st. The water’s clear, there’s a light easterly breeze making it offshore, and the swell is a solid 8ft from the WSW with a long 15-second period. That’s groundswell with heaps of energy (2535), and it’s going to be clean. This is the pick of the whole forecast. It’s a bit big for beginners though – this one’s for the experienced crew.
We also get a decent run on Monday morning, August 24th. A 8ft WSW swell, 14-second period, and a light offshore from the NE keeping things clean. Good energy (2118), definitely another solid option.
Then things get messy. From Saturday, August 22nd, onwards, the wind swings cross and onshore, and the quality drops off. We get a bit of a lull in the middle of the week, with smaller, lumpy surf. The energy drops away too, with readings down in the hundreds.
Towards the end of the month, things start to get a bit wild. On Wednesday, August 26th, there’s a big swell building – 12ft to 13ft from the WSW with a very long period of 19 seconds. That’s a ton of energy (9288), but it’s coming with strong cross-onshore winds and rain. That’s a mess for paddling, but it might be a playground for the kite crew.
The following week continues with big, unruly swell and mostly onshore winds. The windows of clean conditions are few and far between. There’s a promising-looking morning on Thursday, September 3rd, with a 12ft WSW groundswell, 17-second period, and light S winds keeping it cross-shore and fairly clean. That’s a big one for experts only.
The very last session in the forecast, Saturday morning, September 5th, looks like a real gem. Light E wind, glassy conditions, and a 8ft WSW swell with a 15-second period. The energy is strong (3991), and that glassy surface is going to be a treat. Keep an eye on this one.
Alright, that’s the long-range picture. Keep your fingers crossed for those windows of clean wind.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Fri afternoon, min 13°C on Fri morning). Winds increasing (calm on Fri afternoon, fresh winds from the S by Sat night). | Days 5-7 Weather SummaryModerate rain (total 15mm), heaviest on Wed afternoon. Very mild (max 17°C on Mon afternoon, min 10°C on Mon morning). Winds increasing (light winds from the ESE on Mon night, fresh winds from the NW by Wed morning). | ||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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 15 | WSW 14 | WSW 15 | WSW 17 | WSW 16 | WSW 14 | WSW 14 | WSW 13 | WSW 16 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 16 | WSW 15 | WSW 19 | WSW 18 | WSW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 2958 | 2513 | 2243 | 2015 | 2731 | 1699 | 947 | 752 | 796 | 3196 | 2118 | 1303 | 835 | 563 | 441 | 1846 | 9288 | 9196 | 7009 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-off | cross-off | cross | cross | cross-off | cross | cross | cross-off | cross-off | cross-on | cross-off | cross-on | on | cross-on | cross-on | cross | cross |
High Tide | 3:23AM0.56m | 4:57AM0.57m | 6:04AM0.59m | 6:56AM0.61m | 7:38AM0.63m | 8:14AM0.64m | 11:26PM0.31m | ||||||||||||
Low Tide | 3:28PM0.10m | 3:45PM0.09m | 4:02PM0.08m | 4:17PM0.08m | 4:27PM0.08m | 4:33PM0.10m | 00:52AM0.31m | ||||||||||||
 |  | | | |  |  | | | | | | | | | |  |  |  | |
 | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:43 | — | — | 6:43 | — | — | 6:41 | — | — |
 | 5:52 | — | 5:52 | — | — | 5:53 | — | — | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 14 | 6 |
Temp °C | 17 | 17 | 20 | 18 | 18 | 17 | 16 | 15 | 16 | 15 | 15 | 17 | 15 | 15 | 16 | 16 | 17 | 15 | 13 |
Feels °C | 14 | 14 | 18 | 14 | 17 | 13 | 11 | 11 | 11 | 11 | 13 | 15 | 13 | 13 | 14 | 14 | 12 | 14 | 9 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | WSW 15 | WSW 14 | WSW 15 | WSW 17 | WSW 16 | WSW 14 | WSW 14 | WSW 13 | WSW 16 | WSW 14 | WSW 13 | WSW 13 | WSW 12 | WSW 12 | WSW 15 | WSW 19 | WSW 18 | WSW 16 |
| kJ | 2958 | 2513 | 2243 | 2015 | 2731 | 1699 | 947 | 752 | 796 | 3196 | 2118 | 1303 | 835 | 563 | 359 | 1846 | 9288 | 9196 | 7009 |
Swell 2 Height (m) Direction Period (s) | — | SW 24 | WSW 22 | WSW 19 | — | — | WSW 20 | WSW 18 | WSW 18 | — | — | — | — | WSW 18 | WSW 16 | WSW 22 | — | — | — |
| kJ | — | 22 | 95 | 650 | — | — | 39 | 182 | 443 | — | — | — | — | 120 | 441 | 93 | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | SSW 4 | SSW 6 | SSW 6 | SSW 6 | — | — | — | — | — | — | — | — | — | SW 7 |
| kJ | — | — | — | — | — | 28 | 144 | 85 | 77 | — | — | — | — | — | — | — | — | — | 395 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 4 | 443 | 163 | 163 | 1625 | 0 | 0 | 367 | 0 | 30 | 384 | 236 | 164 | 163 | 163 |
Best forecast wave conditions in Perth City Coast | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Watermans 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 Watermans Surf forecast
The above surf forecast table for Watermans provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Watermans can be found by selecting the local surf guide option on the grey menu. Our Watermans 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 (Watermans) 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 Watermans 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 Watermans, camping, hotels and holiday cottages in Perth City Coast, consider staying in Perth which is 17 km (11 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 25 km (16 miles) away, Canning Vale, Gosnells and Kwinana.
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