
Surf Forecasts:
The groyne surf forecast from 9 Aug 2026:
- Best quality surf: Monday 10 Aug, 10PM (local time) - 2.5ft (0.7m), 9s period, E swell with offshore winds.
- Most powerful swell: Friday 14 Aug, 10PM (local time) - 5ft (1.6m), 6s period, SE swell with 171 kJ wave energy.
- Next surfable swell (1★+): Monday 10 Aug, 10PM (local time) - 2.5ft (0.7m), 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 0.7m and 9s period. 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 1.6m 6s and forecast to arrive on Friday (Aug 14) at 10PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 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 (0.7m) 9s |
| Best Surf | 10PM (Mon 10th Aug) | 2.5ft (0.7m) 9s |
| Most Powerful | 10PM (Fri 14th Aug) | 5ft (1.6m) 6s |
Table - best surf conditions forecast for The groyne over the next 16 days.
The Lowdown
Alright, ol’ mate, Rusty here. Let’s have a proper look at what’s on offer for The Groyne over the next couple of weeks. I’ll tell ya straight up – this is one of those outlooks where you’ll need to pick your moments.
At first glance, the pattern’s pretty flat and disappointing. We’ve got a long stretch of nothing much to get excited about. The water temp is sitting at 68.4°F, which is about 1.4°F cooler than usual for this time of year – so, pretty normal, not a talking point.
The first real chance to paddle out doesn’t arrive until Sunday afternoon, 9 August. That afternoon it’s clear skies, but the wind is coming out of the NE at 12.4 mph, cross-on, making it choppy. Swell is small at 3.0 ft from the east, with a moderate wave energy of 191 (moderate energy). Honestly, it’s poor. Not worth suiting up for.
Monday morning, 10 August, shows some promise – cloudy, cross-off wind from the NNW at 15.5 mph, so the surface will be clean. Swell jumps a bit to 4.6 ft from the NNE, but the period is short at 6 seconds, which means weak, crumbly waves. Marginal at best. The afternoon drops back to 2.6 ft and really ordinary conditions.
Tuesday 11 August through to the middle of the following week is a real flat spell. You’re looking at swell heights between 1.6 ft and 2.3 ft, mostly from the east. Winds chop and change but the surf is either too small or messy. Wednesday morning 12 August is glassy with 2.0 ft east swell and wave energy of 83 (weak) – you could float around on a foamie but don’t expect a proper wave.
Things get a bit more interesting from the 14th onward, but the quality stays poor. By Friday 14 August, swell picks up to 3.6 ft from the SE, but the wind is cross or cross-on, and the period’s only 6-7 seconds. It’s junky, choppy water. This trend continues right through to Sunday 16 August with similar conditions – swell around 3.9 ft to 4.6 ft, but messy.
Now, from Monday 17 August, we start to see more size. The swell builds from 5.2 ft on Monday morning up to 7.2 ft by Wednesday 19 August. That’s pushing into the bigger range – too much for beginners, but for the experienced crew, it’s not the wave quality you’d hope for. Winds are consistently cross-onshore, and wave energy climbs to strong levels (596 on Wednesday morning). But the conditions are described as poor – choppy, onshore, no clean faces. It’s getting chunky but ugly.
The end of the first week into the second week... Saturday 22 August is when I’d get your attention. That morning, the swell jumps to 9.8 ft from the SE with a 10-second period. That’s a seriously solid swell – only for experts. The combined wave energy is 2833 (very strong). Wind is light, cross-shore from the south at 6.2 mph – not perfect, but not terrible. The call is “marginal” though, so tide and local conditions could make or break it. Saturday afternoon the wind turns onshore from the ENE at 9.3 mph, which will chop it up, and the swell drops to 7.9 ft.
Sunday 23 August looks cleaner. Afternoon has a light offshore breeze from the NW at 6.2 mph, with swell at 5.2 ft from the ESE, period 9 seconds. That’s clean surf, moderate energy (391). That afternoon might actually be the best window – manageable size, clean faces, proper waves.
After that, Monday 24 August sees the swell back to 3.6-4.3 ft from the east, with a longer period of 10-11 seconds on the Monday afternoon, which is nice for shape, but the wind is howling cross-off at 15.5 mph, so it’ll be blown out and bumpy.
So, what’s the standout? I’d say keep your eyes on Sunday 23 August afternoon – that NW offshore breeze and 5.2 ft SE swell should give you the cleanest, most fun waves of the whole outlook. The Saturday 22 August morning is the biggest swell of the run at 9.8 ft, but it’s raw and marginal – that’s the one for the brave and experienced only.
Outside of those two windows, it’s mostly a waiting game. The Groyne is a reef break, fairly consistent, and the optimum swell direction is SE, which lines up nicely with the bigger swells. But the onshore winds kill the quality for days at a time. If you’re patient, you’ll score. Otherwise, this stretch might be more about watching the horizon than riding it.
Stay stoked.
Short Range ForecastLight rain (total 2mm), mostly falling on Mon afternoon. Warm (max 23°C on Mon morning, min 13°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Wed afternoon, min 14°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sun 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||
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 | NNE 6 | E 8 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | SSE 6 | SE 7 | SE 6 | SSE 6 | SE 6 | SE 6 | ESE 5 |
Wave Graph | ||||||||||||||||||||
120 | 120 | 128 | 92 | 74 | 76 | 57 | 61 | 60 | 83 | 60 | 41 | 41 | 81 | 136 | 80 | 143 | 103 | 131 | 71 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | glassy | cross-on | 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 | 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 | ||||||||
— | — | 6:20 | — | — | 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 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 |
Temp °C | 20 | 17 | 23 | 23 | 15 | 22 | 23 | 18 | 21 | 20 | 17 | 20 | 20 | 16 | 18 | 18 | 17 | 19 | 18 | 17 |
Feels °C | 17 | 14 | 22 | 22 | 12 | 19 | 21 | 15 | 19 | 18 | 13 | 16 | 16 | 14 | 14 | 15 | 14 | 15 | 14 | 14 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | NNE 7 | NNE 6 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 |
120 | 120 | 93 | 134 | 74 | 76 | 57 | 61 | 60 | 83 | 60 | 41 | 41 | 26 | 26 | 26 | 27 | 16 | 27 | 30 | |
Swell 2 Height (m) Direction Period (s) | S 9 | NE 8 | E 13 | E 8 | E 9 | NE 6 | NE 6 | NNE 6 | NE 6 | NE 7 | NE 5 | NE 7 | NE 7 | NE 7 | NE 7 | NE 8 | NE 8 | — | N 10 | NE 10 |
2 | 15 | 3 | 92 | 74 | 40 | 33 | 27 | 21 | 16 | 13 | 8 | 8 | 2 | 2 | 2 | 2 | — | 2 | 4 | |
Swell 3 Height (m) Direction Period (s) | SSE 9 | E 10 | E 13 | E 13 | — | E 11 | SW 3 | — | E 11 | S 10 | NE 8 | NE 10 | SE 7 | SE 10 | NE 9 | NE 7 | NE 9 | — | — | — |
8 | 2 | 3 | 3 | — | 2 | 1 | — | 2 | 2 | 2 | 4 | 2 | 4 | 3 | 2 | 3 | — | — | — | |
Wind waves Height (m) Direction Period (s) | NE 8 | NE 5 | NNE 6 | NNE 6 | SW 3 | SW 3 | WSW 3 | — | — | NE 3 | — | SW 4 | SSE 3 | SSE 6 | SE 7 | SE 6 | SSE 6 | SE 6 | SE 6 | ESE 5 |
61 | 45 | 128 | 200 | 5 | 2 | 2 | — | — | 2 | — | 10 | 4 | 81 | 136 | 80 | 143 | 103 | 131 | 71 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 391 | 17 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 19 | 0 | 15 | 47 | 129 | 13 | 47 | 141 | 157 | 47 | 15 |
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.











