
Surf Forecasts:
Watermans surf forecast from 9 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 5AM (local time) - 11ft (3.5m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Tuesday 11 Aug, 8AM (local time) - 11ft (3.5m), 16s period, SW swell with 5,676 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 5AM (local time) - 11ft (3.5m), 16s period with SW 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 11) at 5AM. The primary swell is predicted to be 3.5m and 16s period with a secondary swell of 0.4m and 10s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Watermans in the next 16 days are 3.5m 16s and forecast to arrive on Tuesday (Aug 11) at 8AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 3s period and expected on Saturday (Aug 15) at 8AM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Tue 11th Aug) | 11ft (3.5m) 16s |
| Best Surf | 5AM (Tue 11th Aug) | 11ft (3.5m) 16s |
| Most Powerful | 8AM (Tue 11th Aug) | 11ft (3.5m) 16s |
Table - best surf conditions forecast for Watermans over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it. We’ve got a solid 16-day window ahead, but it’s a bit of a mixed bag to start. The main player is Watermans, a reef break that’s consistently exposed to the WSW swell. It’s a beginner-friendly spot, but don’t let that fool you – when the juice is on, it gets serious.
The water at Watermans is running about 64°, which is a bit colder than what we usually get this time of year. Keep the rubber on.
We kick off on Sunday, the 9th of August. The morning brings some clouds and a light NNW breeze, cross-on, with a solid 12 ft swell from the WSW. That’s a very long-period groundswell at 16 seconds, packing a massive punch – we’re talking combined energy of 6270, so that’s plenty of grunt. The afternoon stays cloudy with a stronger onshore wind, so the morning window is the only clean shot, and it’s still marginal with cross-on ripples. Not a standout, but it’s surfable.
Monday the 10th is a write-off – heavy rain and strong winds from the W and SSW, blowing the place out. No go.
Tuesday the 11th sees a drop in wind, but the swell is still 10 ft from the SW with a 16-second period. The morning is cross-shore and the afternoon is light cross-on. The surf is there, but it’s not clean. The energy is still very strong (5383 in the morning). It’s a holding pattern.
Now, here’s where it gets interesting. Thursday the 13th of August is a real standout. The morning is clear with a light offshore breeze from the ENE. The swell is a clean 7 ft from the SW, with a 16-second period – that’s groundswell, which will love this reef. The energy is still strong (2228). This is the best session of the first week. The waves will be powerful, well-shaped, and clean. It’s rated for experienced surfers, which is spot on – that size and period will push hard. Crowds are something to keep in mind here, as they can be often.
Friday the 14th is also excellent. The morning has a clean cross-off breeze, and the afternoon turns glassy offshore from the E. Same swell – 7 ft, 16 seconds, SW. Two more clean sessions right in a row. This is a solid run.
The weekend of the 15th and 16th sees the swell dip a little, but the afternoon of Saturday the 15th is worth noting. Clear skies, light NNE wind, and a 6 ft WSW swell with a 14-second period. The energy is moderate (1052), but the conditions are clean. It’s a good, relaxed session.
Now, looking ahead to the second week. Monday the 17th of August is a big one. The morning brings a 12 ft SW swell with an 18-second period, and the energy is massive – 8351. The wind is a gentle cross-shore from the S. This is a serious, powerful groundswell. The afternoon is even bigger, with 13 ft waves and 8021 energy, but the wind goes cross-on. The morning is the pick, but be warned: this is expert territory. The water is going to be a washing machine.
After that, things get messy. Tuesday the 18th has a decent morning with clean cross-off winds, but the afternoon brings rain and strong cross-on winds. Wednesday the 19th is a write-off with 16 ft waves and howling onshore winds. That’s kitesurfing territory, not paddle surfing.
The last few days, from the 22nd to the 24th, settle down. The swell drops to 7 ft to 8 ft, with clean conditions and offshore winds, especially on Sunday the 23rd. That’s a nice, manageable end to the run. The 24th of August morning is a bit smaller at 5 ft, but the afternoon is glassy – a perfect, mellow finish.
So, if you’re picking your days: Thursday 13th and Friday 14th of August are your best bets for the first week. Clean, powerful, and consistent. In the second week, Monday 17th of August morning is the standout for the big-wave crew, but it’s not for the faint-hearted. The rest of the second week is a mix of blown-out days and clean, smaller windows.
Right, that’s the picture. Keep your eyes on the horizon, and don’t be late for the early sets.
Rusty.
Short Range ForecastModerate rain (total 17mm), heaviest on Mon morning. Very mild (max 16°C on Sun night, min 9°C on Mon night). Winds decreasing (strong winds from the WSW on Mon afternoon, light winds from the ESE by Tue night). | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Fri afternoon, min 11°C on Thu morning). Wind will be generally light. | |||||||||||||||||||
Sun 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||
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 14 | SW 9 | SW 13 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | WSW 14 | WSW 14 | WSW 14 | WSW 13 |
Wave Graph | ||||||||||||||||||||
4523 | 2756 | 3068 | 2323 | 2936 | 5352 | 4645 | 3118 | 1983 | 1626 | 1407 | 2066 | 2626 | 2810 | 2413 | 2040 | 1690 | 1332 | 1212 | 1002 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | cross-off | cross | cross-on | cross-off | cross | cross-on | off | glassy | cross | off | cross-off | off | cross-off | cross-off | glassy | cross-off |
High Tide | 7:21AM0.74m | 8:13AM0.75m | 9:01AM0.73m | 9:44AM0.67m | 00:14AM0.30m | 10:20AM0.59m | 00:01AM0.36m | 10:45AM0.50m | 00:07AM0.42m | |||||||||||
Low Tide | 4:10PM-0.04m | 4:45PM-0.05m | 5:18PM-0.02m | 5:44PM0.04m | 5:57PM0.12m | 2:36AM0.29m | 5:45PM0.19m | 3:58AM0.29m | 5:18PM0.23m | |||||||||||
— | — | 6:58 | — | — | 6:56 | — | — | 6:56 | — | — | 6:56 | — | — | 6:54 | — | — | 6:54 | — | — | |
5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:49 | — | — | 5:49 | — | |
mm | — | 1 | 6 | 5 | 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 16 | 16 | 16 | 10 | 11 | 14 | 15 | 13 | 15 | 15 | 13 | 15 | 14 | 16 | 20 | 19 | 18 | 21 | 19 |
Feels °C | 11 | 12 | 10 | 6 | 2 | 7 | 11 | 12 | 11 | 13 | 13 | 12 | 12 | 10 | 12 | 17 | 16 | 13 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | WSW 16 | WSW 16 | — | W 10 | SW 13 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 16 | SW 17 | SW 17 | SW 16 | SW 16 | WSW 14 | WSW 14 | WSW 14 | WSW 13 |
4523 | 2756 | — | 279 | 2936 | 5352 | 4645 | 3118 | 1983 | 1626 | 1407 | 2066 | 2626 | 2810 | 2413 | 2040 | 1690 | 1332 | 1212 | 1002 | |
Swell 2 Height (m) Direction Period (s) | WSW 21 | WSW 19 | — | — | SW 16 | W 10 | — | — | — | SW 24 | SW 21 | — | — | — | — | — | — | — | — | — |
180 | 657 | — | — | 1158 | 18 | — | — | — | 22 | 117 | — | — | — | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | NW 11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | WSW 14 | SW 9 | — | — | — | — | — | — | — | — | — | — | — | — | NE 3 | N 4 | NW 4 | — |
— | — | 3068 | 2323 | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 6 | 4 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 24 | 924 | 333 | 678 | 2433 | 163 | 18 | 105 | 0 | 4 | 82 | 0 | 0 | 163 | 0 | 0 | 0 | 4 | 335 | 0 |
Best forecast wave conditions in Perth City Coast | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Latest Updates
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.











