Surf Forecasts:
The groyne surf forecast from 18 Aug 2026:
- Best quality surf: Friday 21 Aug, 4AM (local time) - 4.5ft (1.3m), 8s period, E swell with glassy winds.
- Most powerful swell: Tuesday 18 Aug, 10PM (local time) - 6ft (1.9m), 8s period, ESE swell with 408 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 4AM (local time) - 4.5ft (1.3m), 8s 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 4AM. The primary swell is predicted to be 1.3m and 8s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at The groyne in the next 16 days are 1.9m 8s and forecast to arrive on Tuesday (Aug 18) at 10PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Tuesday (Aug 25) at 7AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Fri 21st Aug) | 4.5ft (1.3m) 8s |
| Best Surf | 4AM (Fri 21st Aug) | 4.5ft (1.3m) 8s |
| Most Powerful | 10PM (Tue 18th Aug) | 6ft (1.9m) 8s |
Table - best surf conditions forecast for The groyne over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s cooking.
Honestly, mate, if you’re looking to get wet, it’s a pretty grim run ahead. The groyne is a reef setup, and it’s exposed to the swell, but over this 16-day stretch, we’re mostly dealing with cross-onshore winds and lumpy, choppy conditions. The water’s a bit colder than normal for this time of year, sitting at 68°F.
The first real chance to even consider it is on Saturday morning, 22 August. The swell is a weak 3ft from the east with a short 7-second period, and the combined energy is only 111, so there’s not much push. The wind goes glassy though, which is a big plus. You’ll get clean, small waves, but it’s very ordinary. It’s an intermediate spot, and with crowds only sometimes, you might have it to yourself, but there’s not much to ride.
The next window is Monday morning, 24 August. Another glassy morning, but the swell is even smaller at 3ft from the east-northeast, with combined energy down to 95. It’s surfable, but you’ll be working hard for tiny, weak waves.
The best of the whole outlook is a bit of a stretch, but Thursday morning, 27 August looks the most promising. The wind is calm, glassy, and the swell is 2ft from the east-northeast. The combined energy is a weak 67, so it’s tiny, but it’ll be the cleanest the break gets. Not a standout for power, but for a quiet, clean session on a small day, it’s your best bet.
After that, it’s back to cross-onshore junk. There’s a long gap from the 28th of August through to the 2nd of September with nothing worth paddling out for. The winds are up, the swell is messy, and the scores are all zeros. On the 31st of August afternoon, there’s a 3ft swell with a 15-second period, but it’s cross-onshore and choppy – that long period might make it weird at this reef, so not a goer.
Bottom line: if you’re desperate, the glassy mornings on the 22nd, 24th, and 27th are your only real shots. It’s not a good run, but it tends not to stay this poor for long around here.
Rusty.
Short Range ForecastHeavy rain (total 21mm), heaviest during Tue night. Very mild (max 19°C on Wed morning, min 15°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Sun morning, min 15°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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 7 | ESE 8 | E 7 | E 7 | SE 10 | SE 9 | E 8 | E 8 | E 7 | E 7 | E 7 | E 7 | ENE 7 | E 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | E 8 | ENE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 417 | 345 | 315 | 277 | 192 | 132 | 294 | 217 | 155 | 127 | 103 | 106 | 89 | 131 | 159 | 151 | 121 | 89 | 82 | 110 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | cross-on | cross | cross-on | on | on | cross-on | on | glassy | glassy | on | glassy | cross | cross-on | glassy | glassy | cross-on | cross-off |
High Tide | 11:44PM1.17m | 1:08PM1.38m | 00:23AM1.02m | 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 | ||||||||
Low Tide | 6:19PM0.63m | 6:10AM0.36m | 7:32PM0.72m | 6:55AM0.41m | 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 | |||||||
 |  | |  | |  | |  | | | | | |  | | | | | | | |
 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | 6:09 | — | — |
 | 5:27 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — |
mm | 5 | 14 | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 17 | 19 | 18 | 17 | 19 | 19 | 17 | 19 | 18 | 17 | 19 | 18 | 17 | 20 | 19 | 18 | 20 | 20 | 18 |
Feels °C | 13 | 14 | 15 | 14 | 15 | 15 | 16 | 16 | 18 | 16 | 16 | 18 | 17 | 18 | 20 | 18 | 19 | 19 | 19 | 17 |
Swell 1 Height (m) Direction Period (s) | — | ESE 13 | ESE 11 | ENE 7 | SE 10 | ENE 7 | E 8 | E 8 | E 7 | E 7 | E 7 | E 7 | ENE 7 | E 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | E 8 | ENE 8 |
| kJ | — | 35 | 74 | 108 | 192 | 82 | 294 | 217 | 155 | 127 | 103 | 106 | 89 | 131 | 159 | 151 | 121 | 89 | 82 | 110 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | ENE 7 | SE 9 | — | SE 10 | SE 8 | SSE 8 | E 14 | SE 8 | ENE 9 | SE 7 | SE 7 | SE 6 | NE 9 | E 11 | NE 7 | S 10 |
| kJ | — | — | — | — | 84 | 132 | — | 4 | 67 | 23 | 4 | 2 | 29 | 2 | 2 | 2 | 3 | 3 | 21 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | E 13 | NE 9 | — | — | SE 9 | SE 8 | E 14 | E 13 | SE 8 | ESE 10 | SE 8 | — | S 6 | E 11 | SE 10 | — |
| kJ | — | — | — | — | 4 | 3 | — | — | 20 | 18 | 4 | 3 | 2 | 9 | 3 | — | 1 | 3 | 4 | — |
Wind waves Height (m) Direction Period (s) | ESE 7 | ESE 8 | E 7 | E 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | NNE 3 |
| kJ | 417 | 345 | 315 | 277 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 157 | 147 | 47 | 47 | 1 | 46 | 13 | 0 | 13 | 47 | 0 | 0 | 47 | 0 | 1 | 47 | 0 | 0 | 19 | 0 |
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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