
Surf Forecasts:
The groyne surf forecast from 13 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 1AM (local time) - 2.5ft (0.8m), 6s period, E swell with glassy winds.
- Most powerful swell: Wednesday 16 Sep, 10PM (local time) - 10ft (3.0m), 8s period, SE swell with 931 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 1AM (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 1AM. The primary swell is predicted to be 0.8m and 6s period with a secondary swell of 0.1m and 8s. 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 3.0m 8s and forecast to arrive on Wednesday (Sep 16) 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 Sunday (Sep 20) at 10AM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Tue 15th Sep) | 2.5ft (0.8m) 6s |
| Best Surf | 1AM (Tue 15th Sep) | 2.5ft (0.8m) 6s |
| Most Powerful | 10PM (Wed 16th Sep) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for The groyne over the next 16 days.
The Lowdown
Alright, Rusty here. Let's break down what's coming.
First off, the water temp is about 69°, which is just a hair under the average for this time of year—nothing crazy, just a little cool.
To be straight with you, the first week and a half is mostly a dud. The wind is either cross or cross-on, the swell is tiny and weak, and the period is short, so the waves are just choppy and unorganized. There's a couple days mid-week where the combined energy jumps into the moderate range (393 on Wednesday the 16th, 373 on Thursday the 17th), but with onshore winds blowing 18-22 mph, it's just a lumpy, blown-out mess. If you're into kite surfing, that Wednesday afternoon might be more your thing than paddling.
Now, here's the one to circle on your calendar. Saturday the 19th morning at The groyne is the real deal. We've got a 3ft swell out of the ESE, but the big news is the period—12 seconds, that's proper groundswell with some punch (combined energy of 289). The wind is glassy, dead calm. That means clean, lined-up waves. For a reef break that's fairly consistent and can get crowded sometimes, this is the session you don't want to miss. The swell direction is right in the zone for the spot's favorite SE direction, so expect some nice, peeling walls. The afternoon on that same day the wind swings cross-on and it'll get choppy again, so hit it early.
After that, it drops back to small, weak, and mostly cross-on. There's a glassy morning on the 22nd, but with only 2ft and a short 7-second period, it's barely worth the walk.
So here's the call: don't bother this week unless you're just keen for a float. Saturday the 19th morning is your best shot—get in early for clean, chest-high waves at The groyne. After that, we're back to waiting for the next proper swell to roll in.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Sun afternoon, min 15°C on Mon night). Winds increasing (calm on Mon night, fresh winds from the SSE by Wed morning). | Days 5-7 Weather SummarySome drizzle, heaviest during Wed night. Warm (max 21°C on Sat morning, min 13°C on Wed night). Winds decreasing (fresh winds from the SE on Wed afternoon, calm by Fri night). | |||||||||||||||||||
Sun 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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 6 | ESE 6 | E 6 | E 6 | E 6 | E 6 | E 6 | ENE 6 | ENE 6 | SE 6 | SE 8 | SE 7 | SE 6 | SE 7 | SE 9 | ESE 7 | ESE 9 | ESE 10 | ESE 10 | SE 12 |
Wave Graph | ||||||||||||||||||||
100 | 110 | 60 | 60 | 48 | 48 | 36 | 44 | 41 | 339 | 886 | 301 | 271 | 351 | 525 | 131 | 164 | 122 | 120 | 142 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | glassy | glassy | cross-on | cross-off | cross | cross-on | cross | cross | cross-on | cross | cross | on | off | cross-on | cross-on | cross-off |
High Tide | 9:23PM1.59m | 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 | |||||||
Low Tide | 3:40AM0.16m | 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 | ||||||||
— | — | 5:47 | — | — | 5:46 | — | — | 5:43 | — | — | 5:43 | — | — | 5:41 | — | — | 5:41 | — | — | |
5:38 | — | — | 5:38 | — | — | 5:39 | — | — | 5:39 | — | — | 5:40 | — | — | 5:40 | — | — | 5:40 | — | |
mm | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 20 | 18 | 20 | 19 | 17 | 20 | 19 | 17 | 20 | 18 | 18 | 17 | 18 | 18 | 19 | 19 | 17 | 21 | 20 | 18 |
Feels °C | 16 | 16 | 18 | 18 | 17 | 18 | 16 | 15 | 18 | 11 | 11 | 11 | 13 | 13 | 16 | 17 | 18 | 18 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | E 13 | E 6 | E 6 | E 6 | E 6 | E 6 | E 6 | ENE 6 | ENE 6 | E 13 | E 11 | NE 11 | E 13 | E 12 | SE 7 | ESE 7 | ESE 9 | ESE 10 | ESE 10 | SE 12 |
3 | 76 | 60 | 60 | 48 | 48 | 36 | 44 | 41 | 3 | 3 | 5 | 3 | 3 | 178 | 131 | 164 | 122 | 120 | 142 | |
Swell 2 Height (m) Direction Period (s) | E 20 | E 13 | E 12 | NE 8 | NE 8 | E 12 | E 12 | E 11 | E 11 | E 13 | NE 11 | E 13 | E 16 | E 16 | E 12 | E 12 | E 7 | E 7 | E 8 | E 8 |
8 | 3 | 3 | 2 | 2 | 3 | 3 | 3 | 2 | 4 | 5 | 3 | 5 | 5 | 3 | 3 | 4 | 4 | 5 | 5 | |
Swell 3 Height (m) Direction Period (s) | E 11 | E 10 | E 10 | E 12 | E 12 | E 15 | E 15 | E 15 | E 14 | — | — | — | — | — | E 15 | E 14 | — | E 13 | E 13 | E 12 |
2 | 2 | 2 | 3 | 3 | 4 | 4 | 4 | 4 | — | — | — | — | — | 4 | 4 | — | 3 | 3 | 3 | |
Wind waves Height (m) Direction Period (s) | ESE 6 | ESE 6 | — | — | — | — | NE 3 | NW 2 | — | SE 6 | SE 8 | SE 7 | SE 6 | SE 7 | SE 9 | — | — | — | NE 3 | N 4 |
100 | 110 | — | — | — | — | 1 | 1 | — | 339 | 886 | 301 | 271 | 351 | 525 | — | — | — | 3 | 7 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 47 | 13 | 1 | 47 | 0 | 0 | 19 | 0 | 47 | 1471 | 981 | 157 | 473 | 13 | 13 | 13 | 0 | 0 | 412 | 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.










