Surf Forecasts:
Watermans surf forecast from 16 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 8AM (local time) - 11ft (3.5m), 15s period, WSW swell with glassy winds.
- Most powerful swell: Monday 17 Aug, 5PM (local time) - 13ft (4.0m), 15s period, WSW swell with 7,161 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 8AM (local time) - 11ft (3.5m), 15s 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 Tuesday (Aug 18) at 8AM. The primary swell is predicted to be 3.5m and 15s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Watermans in the next 16 days are 4.0m 15s and forecast to arrive on Monday (Aug 17) at 5PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Monday (Aug 17) at 2AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Tue 18th Aug) | 11ft (3.5m) 15s |
| Best Surf | 8AM (Tue 18th Aug) | 11ft (3.5m) 15s |
| Most Powerful | 5PM (Mon 17th Aug) | 13ft (4.0m) 15s |
Table - best surf conditions forecast for Watermans over the next 16 days.
The Lowdown
Alright, folks, Rusty here. It’s a mixed bag, so let’s get into it.
Right now, the only game in town is Watermans. This is a reef setup, and we’ve got a long-range, powerful WSW groundswell rolling in. Sunday the 16th is where we start, but it’s not firing on all cylinders. You’ll see clean, 7 ft faces with a very long 15-second period, and that cross-off wind will keep things tidy for the experienced crew. The water’s sitting at 63°, which is a bit colder than usual for this time of year, so you might want a spring suit. The energy is strong (2061), but there’s a question mark on the tide, so it’s not a total standout.
Monday the 17th is a write-off. We’re looking at a jumpy, poor surf day with nasty onshore winds from the WSW hitting 25 mph and a lumpy 13 ft mess. Stay out of the water.
The real window opens on Thursday morning, the 20th of August. This is it. We’ve got glassy conditions with a slight air, and a solid 10 ft, 16-second groundswell from the WSW. The energy is huge (4904), and the wave comment says it’s excellent for experienced surfers. This is *the* session if you can handle it. The morning windows on the 21st and 22nd are also clean and glassy, with 8 ft and 6 ft swell respectively, but that Thursday is the standout. Get on it.
We’ve got a few clean, glassy mornings mid-week (like the 24th and 25th) but the swell backs off a touch. By the 26th and 27th, the wind turns ugly again—fresh cross-onshore and lumpy—so those are off the table.
Now, looking way out to the end of August—Monday the 31st morning. The models are showing a massive 13 ft, 17-second swell from the same WSW direction, and the energy is absolutely pumping (9403). The wind is only a gentle cross-on, so it could be a beast. But we’re talking ten days out, so call this one a promising prospect rather than a lock.
Overall, keep your eyes on Thursday the 20th for the cleanest, biggest surf, and maybe keep the last day of the month on your radar for a potential wildcard.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Mon afternoon. Warm (max 22°C on Sun afternoon, min 14°C on Mon morning). Winds decreasing (strong winds from the WSW on Mon afternoon, calm by Tue morning). | Days 5-7 Weather SummarySome drizzle, heaviest during Wed night. Very mild (max 18°C on Fri afternoon, min 13°C on Sat morning). Wind will be generally light. | |||||||||||||||||||
Sun 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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 15 | WSW 15 | WSW 16 | WSW 15 | WSW 15 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 16 | WSW 15 |
Wave Graph  | ||||||||||||||||||||
 kJ | 1847 | 2208 | 2331 | 7161 | 6764 | 6486 | 6384 | 4456 | 2824 | 4261 | 6103 | 4904 | 3764 | 2997 | 2381 | 2148 | 2053 | 1408 | 2151 | 1423 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-on | on | cross-on | cross-on | on | on | on | on | cross-off | glassy | cross-on | off | glassy | cross | off | glassy | cross | cross |
High Tide | 00:19AM0.48m | 9:26AM0.35m | 00:37AM0.52m | 8:25AM0.33m | 1:02AM0.55m | 1:48AM0.56m | 3:23AM0.56m | 4:57AM0.57m | ||||||||||||
Low Tide | 4:58PM0.23m | 6:11AM0.31m | 4:46PM0.21m | 7:47AM0.33m | 4:30PM0.19m | 3:35PM0.16m | 3:17PM0.13m | 3:28PM0.10m | 3:45PM0.09m | |||||||||||
 |  |  |  |  | | |  | | | | | | | | | | | | | |
 | — | — | 6:52 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — |
 | 5:50 | — | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — |
mm | — | — | — | 4 | 1 | — | — | 1 | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 20 | 19 | 17 | 16 | 16 | 16 | 16 | 17 | 17 | 16 | 16 | 17 | 16 | 16 | 18 | 16 | 16 | 18 | 16 |
Feels °C | 17 | 15 | 13 | 10 | 10 | 13 | 11 | 12 | 13 | 13 | 15 | 15 | 15 | 14 | 15 | 15 | 13 | 14 | 15 | 12 |
Swell 1 Height (m) Direction Period (s) | WSW 15 | WSW 15 | WSW 16 | — | WSW 15 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 16 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 14 | WSW 16 | WSW 15 |
| kJ | 1847 | 2208 | 2331 | — | 6764 | 6486 | 6384 | 4456 | 2824 | 4261 | 6103 | 4904 | 3764 | 2997 | 2381 | 2148 | 2053 | 1408 | 2151 | 1423 |
Swell 2 Height (m) Direction Period (s) | W 20 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 24 | — | WSW 18 | — | — |
| kJ | 202 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 22 | — | 1033 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | N 5 | NNE 4 | NW 5 | WSW 15 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 4 |
| kJ | 12 | 19 | 78 | 7161 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 7 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 30 | 333 | 1122 | 613 | 163 | 327 | 367 | 362 | 200 | 200 | 0 | 0 | 412 | 0 | 0 | 163 | 0 | 0 | 163 | 163 |
Best forecast wave conditions in Perth City Coast | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
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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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