Surf Forecasts:
City Beach groyne surf forecast from 16 Aug 2026:
- Best quality surf: Tuesday 18 Aug, 2AM (local time) - 11ft (3.5m), 15s period, WSW swell with cross-onshore winds.
- Most powerful swell: Tuesday 18 Aug, 2AM (local time) - 11ft (3.5m), 15s period, WSW swell with 5,914 kJ wave energy.
- Next surfable swell (1★+): Tuesday 18 Aug, 2AM (local time) - 11ft (3.5m), 15s period with WSW swell.
Best Forecast Surf Conditions for City Beach groyne this week:
The surf forecast for City Beach groyne over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 18) at 2AM. The primary swell is predicted to be 3.5m and 15s period. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at City Beach groyne in the next 16 days are 3.5m 15s and forecast to arrive on Tuesday (Aug 18) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (Aug 21) at 11PM.
| Wave Type | Time (AWST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Tue 18th Aug) | 11ft (3.5m) 15s |
| Best Surf | 2AM (Tue 18th Aug) | 11ft (3.5m) 15s |
| Most Powerful | 2AM (Tue 18th Aug) | 11ft (3.5m) 15s |
Table - best surf conditions forecast for City Beach groyne over the next 16 days.
The Lowdown
Alright, Rusty here. Let's take a good, hard look at what's coming down the pipe at City Beach groyne. I'll be honest with you, this stretch of the next couple of weeks has some real teeth to it, and a lot of it ain't going to be pretty for paddle surfing.
The overall pattern here is all about size and wind. We’ve got a lot of powerful, long-period groundswell from the west-southwest lining up, but the problem is the wind. For the first week or so, that strong cross-onshore and onshore wind is going to chew this place up. The combined wave energy is massive, with values often in the thousands, ranging from 2088 all the way up to a whopping 8464 on the 26th, so there’s no shortage of power, but it's going to be messy, lumpy, and poor surf conditions. This is a beach and groyne setup, and with those brutal winds and solid swell, it looks far more interesting for kite surfing than paddle surfing for most of the run.
The water temp is about average for the time of year. No major anomalies to report there.
We don't even get a sniff of a recommendation until Tuesday the 18th of August. The Monday before is a total write-off with a 25 mph cross-onshore and a 7 ft swell. The data gives it a zero.
Alright, now for the standouts. There are only a couple of windows where this place might work, and they're for the brave or the very experienced. The first real window of opportunity is Thursday the 20th of August, early. The morning is showing glassy conditions – a huge positive – with a solid 8 ft swell from the WSW, with a very long 16-second period. This is a powerful groundswell. The combined energy is 3639. The forecast is for "excellent surf conditions for experienced surfers." Now, that size and power will make it a serious session, and it’s not for beginners. It's over 8 feet, which is expert territory. The long period could make it break a bit straight across the beach, but with glassy conditions and that much energy, the set waves will be proper. Later on Thursday, the wind swings and it gets choppy again.
Then, Friday the 21st of August morning is another shot. Another glassy start, a slightly smaller 7 ft from the WSW, still a long 15-second period. The energy is a touch lower at 2150, but still moderate. "Excellent surf conditions for experienced surfers" again. Clean, powerful, but sizeable. The crowds here are "often," so expect plenty of company for these clean, quality windows.
Saturday the 22nd of August morning is the last of the really good ones. It’s clean with a light cross-offshore breeze from the NNE, and the swell has dropped to a more manageable 6 ft from the WSW. The period is still a solid 15 seconds. The combined energy is 1671. This is probably the most user-friendly of the good windows, but it's still a powerful groundswell.
After that, the signs are grim right through to the end of the month. We get a period from the 23rd to the 28th of August where the conditions are consistently rated as "poor" or "marginal," with strong, lumpy cross-onshore winds and lumpy seas. The 25th of August sees an 12 ft swell but with a messy cross-chop. The 26th is a proper write-off with a 15 ft swell and a fresh cross-onshore. That 15 ft combined with 19 mph winds is a no-go. It’s a kite surfers’ paradise, but not for us.
There is a small "marginal" window on Saturday the 29th of August with a 7-8 ft swell, but the winds are cross or cross-onshore and gusty. It might be a long shot if the wind lays down. Then Sunday the 30th of August starts with an 8 ft and a gentle cross-onshore, but it gets messy again in the afternoon.
The very end of the outlook, the 31st of August and 1st of September, looks like it's blowing a gale again with a massive, messy swell. No good.
If I had to pick the true standout, it's the glassy, powerful sessions on Thursday the 20th and Friday the 21st of August. They will be the best on offer, but only for experienced surfers. If you’re not comfortable in the 7 ft-plus range with a long period, watch it from the beach. Saturday the 22nd is the better call for a slightly smaller, clean session. The rest of it? Keep the board in the car, or bring a big kite.
Rusty.
Short Range ForecastLight rain (total 7mm), mostly falling on Mon afternoon. Warm (max 20°C on Sun night, min 14°C on Sun night). Winds decreasing (strong winds from the W on Mon afternoon, calm by Tue morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 21°C on Sat afternoon, min 14°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
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 16 | WSW 10 | WSW 15 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 16 | WSW 15 |
Wave Graph | |||||||||||||||||||
1857 | 1993 | 3111 | 5914 | 5750 | 5641 | 3665 | 2289 | 3115 | 4543 | 3639 | 2948 | 2427 | 2150 | 1873 | 1953 | 1516 | 1507 | 1024 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | on | cross-on | cross-on | cross-on | on | on | on | cross-off | glassy | cross-on | cross-off | glassy | cross | off | cross-off | cross-on | cross |
High Tide | 00:19AM0.48m | 9:30AM0.35m | 00:36AM0.52m | 8:35AM0.33m | 1:01AM0.55m | 1:44AM0.56m | 3:25AM0.56m | 4:59AM0.57m | |||||||||||
Low Tide | 6:12AM0.31m | 4:49PM0.21m | 7:36AM0.33m | 4:33PM0.19m | 3:39PM0.16m | 3:20PM0.13m | 3:31PM0.10m | 3:47PM0.09m | |||||||||||
— | 6:52 | — | — | 6:50 | — | — | 6:50 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | |
5:50 | — | 5:50 | — | — | 5:51 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | |
mm | — | — | 5 | 1 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 16 | 16 | 15 | 16 | 16 | 16 | 17 | 17 | 16 | 16 | 16 | 16 | 17 | 17 | 18 | 21 | 16 |
Feels °C | 15 | 12 | 8 | 10 | 12 | 12 | 13 | 13 | 13 | 15 | 15 | 13 | 13 | 15 | 14 | 15 | 15 | 19 | 14 |
Swell 1 Height (m) Direction Period (s) | WSW 15 | WSW 16 | — | WSW 15 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 16 | WSW 16 | WSW 16 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 15 | WSW 16 | WSW 15 |
1857 | 1993 | — | 5914 | 5750 | 5641 | 3665 | 2289 | 3115 | 4543 | 3639 | 2948 | 2427 | 2150 | 1873 | 1953 | 1516 | 1507 | 1024 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 24 | W 20 | SW 18 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | 55 | 202 | 155 | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | N 4 | NW 5 | WSW 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
19 | 95 | 3111 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 344 | 1135 | 608 | 189 | 189 | 355 | 308 | 297 | 151 | 0 | 0 | 189 | 0 | 0 | 151 | 0 | 0 | 151 | 5 |
Best forecast wave conditions in Perth City Coast | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
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Information about the City Beach groyne Surf forecast
The above surf forecast table for City Beach groyne provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at City Beach groyne can be found by selecting the local surf guide option on the grey menu. Our City Beach groyne 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 (City Beach groyne) 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 City Beach groyne 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.











