Surf Forecasts:
The groyne surf forecast from 15 Aug 2026:
- Best quality surf: Thursday 20 Aug, 4AM (local time) - 3ft (0.9m), 10s period, SE swell with cross-offshore winds.
- Most powerful swell: Monday 17 Aug, 10PM (local time) - 7ft (2.2m), 7s period, ESE swell with 528 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 4AM (local time) - 3ft (0.9m), 10s period with SE 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 Thursday (Aug 20) at 4AM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.9m and 7s. 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 2.2m 7s and forecast to arrive on Monday (Aug 17) 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 0.4m 3s period and expected on Thursday (Aug 20) at 10AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Thu 20th Aug) | 3ft (0.9m) 10s |
| Best Surf | 4AM (Thu 20th Aug) | 3ft (0.9m) 10s |
| Most Powerful | 10PM (Mon 17th Aug) | 7ft (2.2m) 7s |
Table - best surf conditions forecast for The groyne over the next 16 days.
The Lowdown
Alright, mate, Rusty here. Let’s break down what’s on offer for the next couple of weeks.
Gotta be honest, this is a grim stretch. The groyne is a reef setup that’s exposed to the swell, but the wind and conditions are just not cooperating for most of the time. The water temperature is around 68°F, which is a bit colder than normal for this time of year, so you’ll want a decent wetsuit.
We’ve got a real slow start. From Saturday the 15th through Friday the 21st, it’s all poor surf conditions with moderate to fresh cross-shore and cross-onshore winds messing everything up. The swell is there, between 4ft and 7ft from the SE and ESE, but the short period of 6 to 8 seconds and the lumpy, choppy surface make it a washout. The combined swell energy is between 115 and 495, so moderate wave energy, but it’s all for nothing with the wind. Not worth paddling out.
Then, on Saturday the 22nd of August, things finally ease up. We get a morning session with clean conditions, light cross-offshore wind from the NNW at 6 mph, and a small 3ft swell from the ENE at 8 seconds. The combined energy is a weak 159, but the wave comment says “surfable waves but very ordinary conditions.” It’s not a standout by any means, but it’s the only real window of clean surf in the whole 16 days. The water temp isn’t repeated here, but it’s the same break.
After that, from Sunday the 23rd through to the end of the month, it’s back to poor conditions with moderate to fresh cross-onshore winds and small, weak swell. The combined energy drops off to just 36 by the 25th, and the glassy conditions on the 25th morning (SW at 3 mph) still have a tiny 1ft swell, so not enough to ride. There’s a brief clean moment on the 26th morning with a 2ft swell and cross-offshore wind, but again, it’s very ordinary.
So, the straight truth: there’s really only one morning that’s even worth a look, and that’s Saturday the 22nd of August. The rest of the period is a bust for decent surf. If you’re keen, that’s your window, but don’t get your hopes up.
Rusty.
Short Range ForecastHeavy rain (total 20mm), heaviest during Sun night. Very mild (max 19°C on Sun morning, min 15°C on Sat night). Mainly fresh winds. | Days 4-6 Weather SummaryModerate rain (total 18mm), heaviest on Thu morning. Very mild (max 19°C on Tue morning, min 15°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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) | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | ESE 6 | ESE 7 | ESE 8 | ESE 7 | ESE 8 | ESE 8 | E 7 | ESE 8 | SE 8 | SE 10 | SE 9 | SE 9 | ENE 7 | ENE 7 | ENE 7 | ESE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 89 | 171 | 187 | 273 | 161 | 196 | 400 | 411 | 482 | 438 | 385 | 245 | 336 | 133 | 212 | 141 | 112 | 70 | 78 | 78 | 83 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | glassy | cross-on | cross-off |
High Tide | 10:01PM1.70m | 10:32AM1.51m | 10:36PM1.53m | 11:17AM1.48m | 11:10PM1.35m | 12:08PM1.43m | 11:44PM1.17m | 1:08PM1.38m | 00:23AM1.02m | 2:20PM1.36m | 1:27AM0.90m | 3:34PM1.38m | 3:10AM0.84m | ||||||||
Low Tide | 3:47PM0.24m | 4:24AM0.20m | 4:33PM0.36m | 4:58AM0.25m | 5:22PM0.50m | 5:33AM0.30m | 6:19PM0.63m | 6:10AM0.36m | 7:32PM0.72m | 6:55AM0.41m | 9:08PM0.75m | 7:52AM0.45m | 10:44PM0.69m | ||||||||
 |  |  | | | | | | | | |  | | | | | | | | | | |
 | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — |
 | — | 5:25 | — | — | 5:27 | — | — | 5:27 | — | — | 5:27 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — |
mm | — | 1 | 6 | 2 | — | 6 | 1 | 2 | 2 | 1 | 1 | — | — | — | 5 | 5 | — | 6 | 2 | — | — |
Temp °C | 18 | 18 | 17 | 19 | 18 | 18 | 18 | 17 | 18 | 19 | 18 | 18 | 19 | 19 | 17 | 18 | 19 | 17 | 19 | 19 | 17 |
Feels °C | 14 | 13 | 13 | 13 | 13 | 12 | 13 | 12 | 13 | 15 | 14 | 14 | 16 | 16 | 16 | 15 | 16 | 16 | 18 | 18 | 16 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | E 10 | E 9 | E 10 | E 10 | E 14 | ENE 9 | E 13 | — | SE 11 | ESE 13 | ESE 12 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ESE 8 |
| kJ | 25 | 26 | 16 | 28 | 17 | 17 | 4 | 29 | 3 | — | 61 | 57 | 75 | 128 | 111 | 68 | 72 | 70 | 78 | 78 | 83 |
Swell 2 Height (m) Direction Period (s) | NE 8 | NE 8 | — | E 16 | E 15 | E 15 | — | E 13 | — | — | — | SE 10 | E 11 | ESE 11 | SE 10 | SE 9 | SE 9 | SE 8 | ESE 8 | SE 8 | NE 7 |
| kJ | 3 | 3 | — | 5 | 4 | 4 | — | 4 | — | — | — | 24 | 66 | 81 | 212 | 141 | 112 | 64 | 41 | 28 | 54 |
Swell 3 Height (m) Direction Period (s) | — | — | E 16 | — | — | S 19 | — | — | — | — | — | — | — | — | NE 9 | ENE 9 | — | ESE 10 | — | — | SSE 8 |
| kJ | — | — | 5 | — | — | 7 | — | — | — | — | — | — | — | — | 13 | 8 | — | 20 | — | — | 6 |
Wind waves Height (m) Direction Period (s) | SE 6 | SE 6 | SE 6 | SE 6 | SE 6 | ESE 6 | ESE 7 | ESE 8 | ESE 7 | ESE 8 | ESE 8 | E 7 | ESE 8 | SE 8 | — | SSW 3 | — | — | SSW 2 | NE 2 | NNW 2 |
| kJ | 89 | 171 | 187 | 273 | 161 | 196 | 400 | 411 | 482 | 438 | 385 | 245 | 336 | 133 | — | 3 | — | — | 1 | 1 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 157 | 157 | 47 | 47 | 157 | 47 | 157 | 157 | 47 | 157 | 47 | 13 | 47 | 13 | 1 | 13 | 47 | 47 | 0 | 0 | 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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