Surf Forecasts:
The groyne surf forecast from 20 Aug 2026:
- Best quality surf: Friday 21 Aug, 10AM (local time) - 4ft (1.2m), 7s period, E swell with cross-offshore winds.
- Most powerful swell: Thursday 20 Aug, 7PM (local time) - 5ft (1.5m), 8s period, E swell with 256 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 10AM (local time) - 4ft (1.2m), 7s period with E swell.
Best Forecast Surf Conditions for The groyne this week:
The surf forecast for The groyne over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 10AM. The primary swell is predicted to be 1.2m and 7s period with a secondary swell of 0.4m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at The groyne in the next 16 days are 1.5m 8s and forecast to arrive on Thursday (Aug 20) at 7PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Wednesday (Aug 26) at 4AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10AM (Fri 21st Aug) | 4ft (1.2m) 7s |
| Best Surf | 10AM (Fri 21st Aug) | 4ft (1.2m) 7s |
| Most Powerful | 7PM (Thu 20th Aug) | 5ft (1.5m) 8s |
Table - best surf conditions forecast for The groyne over the next 16 days.
The Lowdown
G’day, I’m Rusty, and here’s the outlook for the next 16 days at The Groyne. The water’s running a bit colder than normal for this time of year, down 1° at 20°, so you’ll want a decent spring suit.
We’re looking at a pretty quiet stretch overall, with only a handful of windows worth paddling out. The best of it is shaping up for the first couple of days, but it’s not classic. Thursday the 20th morning has some swell from the ESE at 6 ft with a short 8-second period, and the wave energy is moderate at 676. The wind’s onshore though, so it’s a bit messy and marginal. Friday the 21st morning is cleaner with a light cross-off SSW breeze at 3 mph and waves around 4 ft from the east, period still short at 7 seconds (energy 182). It’s ordinary but surfable. Saturday the 22nd morning is the standout of the early window: glassy conditions with no wind, 3 ft easterly swell at 7 seconds, and low energy at 111. It’s tiny and weak, but if you’re desperate for a slide, that’s your cleanest look.
After that, the surf fades fast. Sunday the 23rd through to the end of the month is mostly poor with small, choppy conditions and onshore or cross-shore breezes. There’s a long gap with no real recommendations until we get to the end of August. Monday the 31st morning shows a bump in size to 6 ft from the ENE, period 7 seconds, energy 279, but the wind is cross-shore and it’s still poor quality. Tuesday the 1st of September morning has a cleaner look with a cross-off NW breeze at 9 mph, 5 ft ENE swell at 8 seconds (energy 325), but it’s marginal and the storm risk is there. That’s about as good as it gets in the second week. The rest of the period into early September is small and weak, with the odd clean but tiny window.
Overall, it’s a lean run. The surf is small, short-period, and often wind-affected. If you’re a beginner, Thursday the 20th morning’s 6 ft might be a bit much, but Saturday the 22nd morning’s glassy 3 ft is your best bet. For experts, there’s nothing really firing. The Groyne is a reef, so the short-period swells aren’t doing it any favours. Keep an eye on the forecasts, but don’t hold your breath.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Thu morning. Warm (max 20°C on Thu morning, min 15°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Sun night. Warm (max 21°C on Tue morning, min 17°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | |||||||||||||||
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) | ESE 8 | E 7 | E 8 | E 7 | E 7 | E 7 | E 7 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 395 | 210 | 223 | 155 | 127 | 100 | 106 | 138 | 151 | 133 | 102 | 78 | 60 | 84 | 109 | 94 | 92 | 64 | 81 | 76 | 72 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | cross-off | on | cross-off | glassy | cross-on | cross-off | cross | on | glassy | glassy | cross-on | cross-off | cross | cross-on | cross-off | cross-off | cross-off | cross |
High Tide | 2:20PM1.36m | 1:27AM0.90m | 3:34PM1.38m | 3:10AM0.84m | 4:35PM1.45m | 4:37AM0.87m | 5:22PM1.53m | 5:34AM0.95m | 6:00PM1.62m | 6:17AM1.05m | 6:35PM1.71m | 6:54AM1.17m | 7:08PM1.78m | ||||||||
Low Tide | 9:08PM0.75m | 7:52AM0.45m | 10:44PM0.69m | 9:00AM0.46m | 11:42PM0.60m | 10:06AM0.44m | 00:18AM0.50m | 11:01AM0.40m | 00:48AM0.40m | 11:48AM0.35m | 1:15AM0.32m | 12:30PM0.30m | 1:42AM0.25m | ||||||||
 |  |  |  | |  |  | |  | | | | | | | | | | | | | |
 | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | 5:28 | — | — | 5:29 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — |
mm | 1 | — | — | — | — | — | — | — | 2 | — | — | 2 | — | — | — | — | — | — | 2 | — | — |
Temp °C | 20 | 19 | 18 | 19 | 19 | 17 | 19 | 18 | 18 | 20 | 19 | 19 | 20 | 20 | 18 | 21 | 20 | 18 | 23 | 24 | 18 |
Feels °C | 16 | 17 | 16 | 18 | 18 | 17 | 18 | 17 | 19 | 19 | 18 | 19 | 19 | 19 | 18 | 20 | 18 | 16 | 23 | 23 | 15 |
Swell 1 Height (m) Direction Period (s) | E 7 | E 7 | E 8 | E 7 | E 7 | E 7 | E 7 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 7 | ENE 7 |
| kJ | 154 | 210 | 223 | 155 | 127 | 100 | 106 | 138 | 151 | 133 | 102 | 78 | 60 | 84 | 109 | 94 | 92 | 64 | 81 | 76 | 72 |
Swell 2 Height (m) Direction Period (s) | E 9 | ESE 9 | ENE 7 | SE 9 | SSE 8 | E 14 | SE 8 | SE 7 | SE 7 | SE 7 | S 6 | ENE 9 | NE 7 | NE 7 | S 7 | SE 6 | SE 6 | NE 7 | E 14 | E 14 | E 13 |
| kJ | 127 | 53 | 86 | 20 | 24 | 4 | 2 | 2 | 2 | 2 | 1 | 8 | 29 | 23 | 1 | 2 | 1 | 8 | 4 | 4 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | SE 10 | SSE 9 | SE 8 | E 14 | E 12 | E 11 | ESE 10 | E 8 | SSE 7 | SE 7 | SE 8 | SE 10 | S 10 | S 10 | S 10 | S 5 | E 12 | — | — |
| kJ | — | — | 4 | 7 | 15 | 4 | 3 | 2 | 9 | 1 | 4 | 2 | 3 | 4 | 2 | 2 | 2 | 1 | 3 | — | — |
Wind waves Height (m) Direction Period (s) | ESE 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NE 3 | NNE 4 | — | NNE 3 | — |
| kJ | 395 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 13 | — | 2 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 13 | 13 | 13 | 0 | 47 | 0 | 0 | 19 | 0 | 1 | 47 | 0 | 0 | 19 | 0 | 0 | 619 | 0 | 0 | 0 | 13 |
Best forecast wave conditions in Sunshine Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
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Information about the The groyne Surf forecast
The above surf forecast table for The groyne provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at The groyne can be found by selecting the local surf guide option on the grey menu. Our The 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 (The 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 The 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.
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