
Surf Forecasts:
The groyne surf forecast from 13 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 4AM (local time) - 2.5ft (0.8m), 6s period, E swell with glassy winds.
- Most powerful swell: Thursday 17 Sep, 4AM (local time) - 8ft (2.5m), 8s period, SE swell with 838 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 4AM (local time) - 2.5ft (0.8m), 6s 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 Tuesday (Sep 15) at 4AM. The primary swell is predicted to be 0.8m and 6s period with a secondary swell of 0.1m and 12s. 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 2.5m 8s and forecast to arrive on Thursday (Sep 17) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Monday (Sep 21) at 7AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Tue 15th Sep) | 2.5ft (0.8m) 6s |
| Best Surf | 4AM (Tue 15th Sep) | 2.5ft (0.8m) 6s |
| Most Powerful | 4AM (Thu 17th Sep) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for The groyne over the next 16 days.
The Lowdown
Alright, Rusty here, and let me tell you, it's been a tough stretch of looking at the charts for The Groyne. We've got a solid 16-day window ahead, but honestly, the first week and a half is pretty grim. From now until the 21st of September, it's a real desert – nothing but poor surf conditions and small, weak energy. The swell just isn't showing up with any power, and when it does, the wind is almost always ruining it.
Let's break it down. We kick off on Monday the 14th with a tiny 3ft swell from the east, but it's coming in at a short 6 seconds and the wind is cross-on, making a mess of things. The combined energy is a weak 65, and the water temp is sitting at 69°, which is a touch cooler than average for this time of year, but nothing crazy. Honestly, it's a write-off. Tuesday the 15th offers a tiny glimmer – the morning sees glassy conditions with a light offshore from the NE, but the swell is only 3ft with a poor 6-second period. The energy is only 56, so it's surfable but very ordinary. That's the closest thing to a highlight in the first week, and that's saying something.
The middle of the week gets worse. Wednesday the 16th through the 18th, we see the swell bump up, hitting 7ft on Wednesday afternoon, but the wind is screaming from the SSE at 22 mph, creating lumpy, blown-out conditions. The energy gets up to a moderate 393, but with that wind, it's a complete mess. For a reef break like The Groyne, which prefers an offshore from the west but is getting hammered by SE wind, this is pure frustration. From the 19th to the 21st, the energy drops right back down to near zero.
Then, finally, a shift. On Monday the 22nd of September, things get interesting. The morning shows a solid 8ft swell from the ESE, with a combined energy of 608 – that's strong. The wind is light and onshore from the east, which isn't ideal, but the raw power is there. This is the standout of the entire outlook. The period is still short at 8 seconds, so it won't be a clean groundswell, but for The Groyne, that's a lot of water moving. It's a bit big for beginners, and the onshore wind will put some chop on it, but for experienced surfers, this is the window to watch.
After that, the swell hangs around in the 5ft to 6ft range from the 23rd to the 25th, but the wind is mostly cross-on from the NE, keeping the quality low. The energy stays moderate, around 200-300, but it never really cleans up.
The final few days, from the 26th to the 29th, fade back into small, weak, and windy conditions. There’s a weird spike on the 29th with a very long 18-second period from the SE, but the swell is tiny at 1ft and the wind is a fresh 19 mph cross-on, so it's just a waste of potential.
So, for the best bet: keep your eyes on the morning of the 22nd of September. It's the only time in this whole 16-day stretch where the energy really steps up. It won't be perfect, but it's the best we've got.
Rusty.
Short Range ForecastSome drizzle, heaviest during Wed night. Warm (max 20°C on Mon morning, min 14°C on Wed night). Winds increasing (calm on Mon night, fresh winds from the SE by Wed afternoon). | Days 4-6 Weather SummaryMostly dry. Warm (max 20°C on Sat morning, min 15°C on Thu night). Winds decreasing (fresh winds from the SSE on Thu afternoon, calm by Fri night). | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
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) | E 6 | E 6 | E 6 | E 6 | E 6 | ENE 6 | ENE 6 | SE 6 | SE 8 | SE 7 | SE 7 | SE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | E 7 | SE 8 | NE 4 | NNE 4 |
Wave Graph | |||||||||||||||||||||
60 | 60 | 48 | 49 | 38 | 53 | 41 | 386 | 817 | 334 | 371 | 382 | 175 | 132 | 89 | 78 | 37 | 26 | 20 | 17 | 22 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | cross-on | glassy | cross-on | cross-off | cross | cross-on | cross-on | cross | cross-on | cross | cross | on | cross-off | cross-on | cross-on | cross-off | cross | cross-on | cross-off |
High Tide | 10:03AM1.64m | 9:54PM1.43m | 10:45AM1.58m | 10:23PM1.26m | 11:32AM1.51m | 10:52PM1.11m | 12:27PM1.44m | 11:28PM0.96m | 1:37PM1.39m | 00:33AM0.84m | 2:53PM1.39m | 2:47AM0.79m | 3:57PM1.44m | ||||||||
Low Tide | 4:10PM0.44m | 4:11AM0.21m | 4:57PM0.57m | 4:42AM0.27m | 5:52PM0.68m | 5:16AM0.34m | 7:07PM0.75m | 5:58AM0.41m | 8:50PM0.75m | 6:57AM0.48m | 10:24PM0.67m | 8:16AM0.52m | 11:13PM0.57m | ||||||||
5:47 | — | — | 5:46 | — | — | 5:43 | — | — | 5:43 | — | — | 5:41 | — | — | 5:41 | — | — | 5:39 | — | — | |
— | 5:38 | — | — | 5:39 | — | — | 5:39 | — | — | 5:40 | — | — | 5:40 | — | — | 5:40 | — | — | 5:42 | — | |
mm | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 19 | 17 | 20 | 20 | 17 | 20 | 19 | 18 | 17 | 18 | 18 | 19 | 19 | 17 | 20 | 19 | 17 | 21 | 20 | 17 |
Feels °C | 19 | 18 | 17 | 18 | 18 | 15 | 15 | 13 | 11 | 12 | 12 | 13 | 16 | 17 | 17 | 18 | 16 | 15 | 18 | 17 | 14 |
Swell 1 Height (m) Direction Period (s) | E 6 | E 6 | E 6 | E 6 | E 6 | ENE 6 | ENE 6 | E 13 | E 12 | — | E 16 | E 12 | E 12 | E 12 | ESE 7 | ESE 7 | ESE 8 | E 7 | ENE 7 | SE 8 | SE 8 |
60 | 60 | 48 | 49 | 38 | 53 | 41 | 3 | 3 | — | 5 | 3 | 3 | 3 | 89 | 78 | 37 | 26 | 20 | 10 | 9 | |
Swell 2 Height (m) Direction Period (s) | E 12 | NE 8 | NE 8 | E 12 | E 12 | E 11 | E 11 | E 13 | NE 11 | E 13 | E 13 | E 16 | E 15 | E 15 | E 12 | E 13 | E 12 | SE 8 | SE 8 | E 7 | E 7 |
3 | 2 | 2 | 3 | 3 | 3 | 2 | 4 | 5 | 3 | 3 | 5 | 4 | 4 | 3 | 3 | 3 | 20 | 15 | 4 | 1 | |
Swell 3 Height (m) Direction Period (s) | E 10 | E 12 | E 12 | E 15 | E 15 | E 15 | E 14 | — | — | — | E 16 | — | E 15 | E 12 | E 12 | S 19 | — | E 12 | E 11 | NE 8 | E 11 |
2 | 3 | 3 | 4 | 4 | 4 | 4 | — | — | — | 5 | — | 4 | 3 | 3 | 7 | — | 3 | 3 | 3 | 2 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | NE 3 | NW 3 | S 2 | SE 6 | SE 8 | SE 7 | SE 7 | SE 7 | ESE 7 | ESE 7 | — | — | E 7 | — | NW 2 | NE 4 | NNE 4 |
— | — | — | — | 1 | 1 | 1 | 386 | 817 | 334 | 371 | 382 | 175 | 132 | — | — | 28 | — | 1 | 17 | 22 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 13 | 13 | 2 | 0 | 19 | 0 | 47 | 1495 | 426 | 13 | 473 | 13 | 47 | 13 | 0 | 0 | 637 | 2 | 96 | 1097 | 173 |
Best forecast wave conditions in Sunshine Coast | |||||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.










