Surf Forecasts:
The groyne surf forecast from 9 Aug 2026:
- Best quality surf: Monday 10 Aug, 10PM (local time) - 2.5ft (0.8m), 9s period, E swell with offshore winds.
- Most powerful swell: Sunday 9 Aug, 1PM (local time) - 3ft (0.9m), 9s period, E swell with 123 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 10PM (local time) - 2.5ft (0.8m), 9s 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 Monday (Aug 10) at 10PM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 1.0m and 6s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at The groyne in the next 16 days are 0.9m 9s and forecast to arrive on Sunday (Aug 09) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Monday (Aug 10) at 4PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Mon 10th Aug) | 2.5ft (0.8m) 9s |
| Best Surf | 10PM (Mon 10th Aug) | 2.5ft (0.8m) 9s |
| Most Powerful | 1PM (Sun 9th Aug) | 3ft (0.9m) 9s |
Table - best surf conditions forecast for The groyne over the next 16 days.
The Lowdown
Alright, let’s talk surf.
We’ve only got The Groyne to work with, a reef break that’s our sole focus. The first part of the run is pretty sleepy, so don’t bother waxing up too early. The first real chance to get wet is Sunday morning, August 9th. You’re looking at a 3ft easterly swell with a 9-second period, and the combined wave energy is moderate (202). The water temp is 68°F, which is a touch cooler than average for this time of year. The big draw is the glassy conditions – zero wind, so the surface will be like a mirror. This spot can get crowded sometimes, so get there before the pack.
From Sunday afternoon on, it goes quiet. The wind turns onshore and we hit a long stretch of poor-quality surf. There’s a big gap of several days where you’re better off staying on the beach. The swell is there, but the wind just won’t play ball.
Now, the second week has some serious promise. Come Thursday morning, August 20th, the swell picks up to 8ft from the east with a 10-second period and the energy is strong (1240). But the wind is cross-shore, so it’s a bit rough. That’s expert territory for sure.
The absolute standout is Friday morning, August 21st. The swell holds at a meaty 7ft from the east, 10-second period, strong energy (755), and the wind is glassy – dead calm. That’s going to be clean, powerful reef waves. It’s too big for beginners, but for the experienced crew, that’s the one.
Saturday and Sunday, August 22nd and 23rd, keep the quality coming. Saturday afternoon has a 6ft easterly swell with a long 11-second period, strong energy (835), and offshore wind from the west – clean and well-shaped. That long period will give the waves some serious push and the reef will handle it nicely. Sunday morning is similar with a 5ft easterly swell, long period (11 seconds), and offshore wind. Sunday afternoon goes glassy again. All of these are primo windows.
By Monday the 24th, it drops to a 4ft east swell, still with offshore wind, so it stays clean but with less punch (345).
If you’ve got to pick one, it’s Friday morning the 21st – glassy, solid east swell, and the reef working its magic. Watch out for the crowd.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon afternoon. Warm (max 23°C on Mon morning, min 12°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Fri night. Warm (max 21°C on Wed morning, min 13°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
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 9 | E 9 | E 9 | NNE 6 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | SE 6 | SE 5 | SE 6 | ESE 5 | ESE 5 | ESE 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 155 | 120 | 120 | 108 | 94 | 74 | 78 | 57 | 61 | 83 | 81 | 60 | 40 | 40 | 41 | 77 | 58 | 76 | 61 | 71 | 83 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | glassy | cross-on | cross-off | cross-off | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross-on |
High Tide | 5:37PM1.80m | 5:52AM1.11m | 6:31PM1.91m | 6:47AM1.22m | 7:19PM1.98m | 7:36AM1.33m | 8:03PM2.00m | 8:21AM1.42m | 8:45PM1.95m | 9:05AM1.49m | 9:24PM1.85m | 9:48AM1.52m | 10:01PM1.70m | ||||||||
Low Tide | 10:30AM0.27m | 00:25AM0.37m | 11:35AM0.20m | 1:13AM0.27m | 12:33PM0.13m | 1:56AM0.19m | 1:25PM0.09m | 2:36AM0.15m | 2:14PM0.09m | 3:13AM0.14m | 3:01PM0.14m | 3:49AM0.16m | 3:47PM0.24m | ||||||||
 | |  |  |  | | | | | |  |  | | | | | |  | | | | |
 | 6:22 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — |
 | — | 5:22 | — | — | 5:23 | — | — | 5:23 | — | — | 5:24 | — | — | 5:24 | — | — | 5:25 | — | — | 5:25 | — |
mm | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 2 | 1 | 6 |
Temp °C | 19 | 19 | 17 | 23 | 20 | 15 | 21 | 21 | 17 | 21 | 20 | 18 | 20 | 19 | 16 | 18 | 18 | 17 | 19 | 18 | 17 |
Feels °C | 18 | 16 | 14 | 20 | 19 | 11 | 18 | 18 | 14 | 18 | 17 | 15 | 16 | 14 | 13 | 14 | 15 | 14 | 15 | 15 | 13 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | E 9 | NNE 6 | NE 6 | E 9 | E 9 | E 9 | E 9 | E 9 | NNE 5 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | ENE 10 |
| kJ | 155 | 120 | 120 | 93 | 122 | 59 | 78 | 57 | 61 | 83 | 81 | 18 | 40 | 40 | 41 | 41 | 26 | 27 | 27 | 27 | 30 |
Swell 2 Height (m) Direction Period (s) | NE 8 | S 9 | NE 8 | E 13 | E 9 | E 9 | NE 6 | NE 6 | NNE 6 | NE 6 | S 9 | E 9 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 7 | NE 9 | NE 10 | SSE 8 |
| kJ | 43 | 2 | 15 | 3 | 94 | 74 | 32 | 34 | 27 | 19 | 2 | 60 | 12 | 8 | 8 | 2 | 2 | 2 | 3 | 4 | 24 |
Swell 3 Height (m) Direction Period (s) | E 14 | SSE 9 | S 9 | E 13 | E 13 | — | E 11 | — | — | NE 11 | S 9 | S 10 | NE 10 | NE 10 | SE 9 | — | NE 9 | NE 9 | E 11 | — | NE 10 |
| kJ | 4 | 8 | 2 | 3 | 3 | — | 2 | — | — | 5 | 2 | 2 | 4 | 4 | 3 | — | 3 | 3 | 2 | — | 4 |
Wind waves Height (m) Direction Period (s) | — | NE 8 | NE 5 | NNE 6 | NNE 6 | WSW 3 | SW 3 | WSW 3 | — | — | NE 3 | SW 3 | SW 3 | S 3 | SE 4 | SE 6 | SE 5 | SE 6 | ESE 5 | ESE 5 | ESE 6 |
| kJ | — | 50 | 47 | 108 | 165 | 7 | 3 | 1 | — | — | 8 | 5 | 5 | 1 | 23 | 77 | 58 | 76 | 61 | 71 | 83 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 412 | 17 | 19 | 1 | 0 | 0 | 0 | 0 | 0 | 19 | 1 | 15 | 47 | 15 | 47 | 157 | 15 | 30 | 157 | 47 |
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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