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 cross-offshore winds.
- Most powerful swell: Tuesday 18 Aug, 7PM (local time) - 7ft (2.1m), 7s period, ESE swell with 482 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 cross-offshore as the swell arrives.
The most powerful waves expected at The groyne in the next 16 days are 2.1m 7s and forecast to arrive on Tuesday (Aug 18) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 7s period and expected on Monday (Aug 24) at 7PM.
| 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 | 7PM (Tue 18th Aug) | 7ft (2.1m) 7s |
Table - best surf conditions forecast for The groyne over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the table for the next couple of weeks.
Honestly, I gotta be straight with you – this is a tough stretch. The Groyne is not firing at all for the foreseeable future. We’re looking at a long, dry spell with no real quality surf to get excited about. The first few days are a write-off, with cross-onshore winds and lumpy, poor conditions. The combined swell energy is moderate at best, topping out around 749 (moderate wave energy) on Wednesday the 19th, but that’s paired with a 7-second period and choppy onshore wind, so it’s a mess.
The only glimmers of hope come when the wind drops. Friday the 21st morning shows a glassy window with the wind from the SSE at 5 km/h, and we get a little 1.2m (4 ft) swell from the east. The combined energy is weak at 170, and the period is short (7 seconds), so it’s not going to be anything special, but it’ll be the cleanest wave you’ll see all week. The water temp is running a bit colder than normal at 20° (68°F), so you’ll want a spring suit.
Saturday the 22nd morning is another glassy moment with a tiny 0.9m (3 ft) swell from the east-northeast, combined energy a weak 89. Again, it’s surfable but very ordinary.
After that, the swell fades away into nothing. From the 23rd of August all the way through to the 2nd of September, the swell drops below 1m (3 ft), the energy gets weak (often below 100), and the wind is mostly onshore or cross-shore. There’s a few clean mornings with cross-offshore winds from the northwest on the 25th and southwest on the 26th and 27th, but the swell is just too small (0.6m to 0.9m, or 2 ft to 3 ft) to do anything with. The period is short (7-8 seconds), so no real push.
The Groyne is exposed and needs a decent swell to work. With the energy this low and the direction mostly from the east and east-northeast, it’s just not going to happen. This is a classic dead period for the area. Forecasts can change, but right now, you’re better off finding something else to do.
Best bet? If you’re desperate, the Friday 21st and Saturday 22nd mornings are your only realistic, clean options. But keep your expectations on the floor. For the rest of the 16 days, it’s a flat, windy mess.
Rusty.
Short Range ForecastHeavy rain (total 27mm), heaviest during Tue morning. Very mild (max 19°C on Wed morning, min 15°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 19°C on Fri morning, min 15°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | |||||||||||||||
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 | ESE 7 | ESE 8 | ESE 8 | E 7 | ESE 8 | SE 8 | ESE 8 | E 8 | E 7 | E 7 | E 7 | ENE 7 | E 7 | E 8 | E 8 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | ENE 8 |
Wave Graph | |||||||||||||||||||||
336 | 444 | 356 | 419 | 269 | 414 | 110 | 355 | 217 | 150 | 124 | 100 | 84 | 112 | 140 | 153 | 143 | 118 | 97 | 113 | 130 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross | on | cross-on | cross-on | glassy | cross-on | cross | glassy | on | cross-on | cross-on | cross-on | glassy | glassy | cross-on | cross-off |
High Tide | 12:08PM1.43m | 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 | ||||||||
6:15 | — | — | 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 | 6 | 3 | 10 | — | — | 5 | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 18 | 17 | 19 | 19 | 17 | 19 | 19 | 17 | 19 | 19 | 17 | 19 | 19 | 18 | 19 | 19 | 18 | 20 | 19 | 18 |
Feels °C | 14 | 13 | 14 | 15 | 16 | 15 | 16 | 16 | 16 | 18 | 18 | 16 | 18 | 18 | 18 | 18 | 19 | 19 | 20 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | E 14 | — | ESE 13 | E 7 | ENE 7 | E 7 | SE 8 | ESE 8 | E 8 | E 7 | E 7 | E 7 | ENE 7 | E 7 | E 8 | E 8 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | ENE 8 |
4 | — | 35 | 161 | 108 | 111 | 110 | 355 | 217 | 150 | 124 | 100 | 84 | 112 | 140 | 153 | 143 | 118 | 97 | 113 | 130 | |
Swell 2 Height (m) Direction Period (s) | — | — | — | SE 8 | — | SE 10 | ENE 7 | — | SE 10 | SE 9 | SE 8 | E 14 | SE 7 | SSE 7 | SE 7 | SE 7 | — | ENE 10 | E 11 | E 10 | S 10 |
— | — | — | 95 | — | 142 | 68 | — | 4 | 20 | 29 | 4 | 2 | 5 | 2 | 2 | — | 9 | 2 | 2 | 2 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | ESE 11 | — | E 13 | NE 9 | — | — | — | ESE 9 | ESE 8 | E 12 | E 10 | ESE 10 | SE 8 | — | SE 9 | E 8 | S 10 | — |
— | — | — | 74 | — | 4 | 3 | — | — | — | 8 | 7 | 3 | 2 | 9 | 3 | — | 3 | 1 | 2 | — | |
Wind waves Height (m) Direction Period (s) | ESE 8 | ESE 7 | ESE 8 | ESE 8 | E 7 | ESE 8 | — | E 8 | — | — | — | — | — | — | — | — | — | — | — | NE 7 | N 4 |
336 | 444 | 356 | 419 | 269 | 414 | — | 221 | — | — | — | — | — | — | — | — | — | — | — | 36 | 9 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 47 | 157 | 47 | 30 | 47 | 3 | 13 | 47 | 0 | 0 | 19 | 0 | 0 | 47 | 13 | 13 | 47 | 0 | 0 | 47 | 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.











