Surf Forecasts:
The groyne surf forecast from 20 Aug 2026:
- Best quality surf: Friday 28 Aug, 4AM (local time) - 3.5ft (1.1m), 8s period, E swell with cross-offshore winds.
- Most powerful swell: Thursday 27 Aug, 4PM (local time) - 4.5ft (1.4m), 8s period, ESE swell with 237 kJ wave energy.
- Next surfable swell (1★+): Saturday 22 Aug, 4AM (local time) - 3ft (0.9m), 7s 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 Saturday (Aug 22) at 4AM. The primary swell is predicted to be 0.9m and 7s period with a secondary swell of 0.1m and 14s. 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 1.4m 8s and forecast to arrive on Thursday (Aug 27) at 4PM. Winds are predicted to be 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 Wednesday (Aug 26) at 10PM.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sat 22nd Aug) | 3ft (0.9m) 7s |
| Best Surf | 4AM (Fri 28th Aug) | 3.5ft (1.1m) 8s |
| Most Powerful | 4PM (Thu 27th Aug) | 4.5ft (1.4m) 8s |
Table - best surf conditions forecast for The groyne over the next 16 days.
The Lowdown
Righto, let’s see what’s cookin’ at The Groyne.
First up, the water temp is sittin’ about average for this time of year, so no dramas there. The combined swell energy is weak at best for most of the run, hoverin’ around the 80–200 range for the most part. We’re lookin’ at a pretty flat, windy stretch ahead, with only a few windows where it might be worth paddlin’ out.
The Groyne is a reef break, fairly consistent, and it likes swell from the SE. Unfortunately, the wind is mostly cross-on or onshore for the first week, and the swell is small – under 3 ft with short 7–8 second periods. That’s weak, bumpy stuff. The first real sniff of a decent session comes on Saturday morning, August 22. It’s tiny – 3 ft of east swell, period only 7 seconds, but the wind goes glassy, dead calm. That’s your best early bet: clean little waves, but you’ll need a longboard. The combined energy is only 86, so don’t expect any power.
After that, it’s a long stretch of poor conditions with chop and ripples right through to Wednesday, August 26. That morning, the wind swings to a light cross-off from the NNW, cleaning up the 4 ft east-northeast swell. Still short period, but it’s clean. The afternoon sees a rain shower and a 9 mph offshore from the west, producing 3 ft surf – again, clean, but small. The energy is in the moderate range now at 169.
Thursday, August 27, has a bit more juice – 4 ft of southeast swell, but it’s a 5-second period, which is pure wind chop. The wind is a 12 mph cross-off which keeps it clean, but that period is just too short for any real shape. The combined energy is 214, but it’s messy.
The real standout, if you can wait, is Tuesday morning, September 1. The wind goes glassy again, and we’ve got 3 ft of east swell with a 9-second period. The combined energy is 164 – moderate – and the conditions are clean. That’s the best of the whole run: small but glassy, with a bit more push than the earlier sessions.
After that, the wind turns onshore again, and the swell stays small or becomes bumpy. Saturday morning, September 5, has another glassy window with 3 ft east swell, 10-second period, and energy at 159 – clean again, but it’s the tail end of the forecast and less certain.
So, overall, the pick is Saturday morning, August 22, or Tuesday morning, September 1, for clean, glassy conditions on small waves. The rest is mostly ordinary, with cross-onshore chop and tiny surf. Keep your expectations in check, and you might snag a few fun ones.
Rusty
Short Range ForecastMostly dry. Very mild (max 19°C on Fri morning, min 15°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 4mm), mostly falling on Tue night. Warm (max 24°C on Wed afternoon, min 16°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | ||||||||||||||
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 8 | E 7 | E 7 | E 7 | E 7 | E 7 | ENE 7 | ENE 8 | ENE 8 | ENE 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 | E 8 | E 8 |
Wave Graph | |||||||||||||||||||
222 | 155 | 104 | 100 | 81 | 109 | 117 | 105 | 99 | 73 | 57 | 84 | 131 | 147 | 144 | 157 | 155 | 90 | 74 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | cross | glassy | on | cross-off | cross-on | cross-on | on | cross | cross-on | cross-off | cross-on | cross-on | cross-off | cross-off | off | cross-off |
High Tide | 1:27AM0.90m | 3:34PM1.38m | 3:10AM0.84m | 4:35PM1.45m | 4:37AM0.87m | 5:22PM1.53m | 5:34AM0.95m | 6:00PM1.62m | 6:17AM1.05m | 6:35PM1.71m | 6:54AM1.17m | 7:08PM1.78m | |||||||
Low Tide | 7:52AM0.45m | 10:44PM0.69m | 9:00AM0.46m | 11:42PM0.60m | 10:06AM0.44m | 00:18AM0.50m | 11:01AM0.40m | 00:48AM0.40m | 11:48AM0.35m | 1:15AM0.32m | 12:30PM0.30m | 1:42AM0.25m | |||||||
— | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — | |
— | — | 5:29 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | — | 5:30 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | 1 | — |
Temp °C | 18 | 19 | 19 | 17 | 19 | 18 | 18 | 19 | 19 | 19 | 20 | 19 | 17 | 20 | 20 | 18 | 23 | 24 | 17 |
Feels °C | 16 | 17 | 18 | 17 | 18 | 18 | 19 | 19 | 19 | 18 | 19 | 17 | 18 | 20 | 20 | 17 | 23 | 22 | 12 |
Swell 1 Height (m) Direction Period (s) | E 8 | E 7 | E 7 | E 7 | E 7 | E 7 | ENE 7 | ENE 8 | ENE 8 | ENE 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 8 | E 8 | E 8 |
222 | 155 | 104 | 100 | 81 | 109 | 117 | 105 | 99 | 73 | 57 | 84 | 131 | 147 | 144 | 157 | 155 | 90 | 74 | |
Swell 2 Height (m) Direction Period (s) | SE 10 | SE 9 | SSE 8 | E 14 | SE 8 | SE 7 | SE 7 | SE 7 | NE 10 | NE 9 | NE 7 | NE 7 | S 6 | SSE 10 | SE 6 | E 16 | E 14 | NE 8 | NE 7 |
4 | 20 | 24 | 4 | 2 | 2 | 2 | 2 | 4 | 13 | 30 | 16 | 1 | 10 | 1 | 5 | 4 | 75 | 60 | |
Swell 3 Height (m) Direction Period (s) | — | SSE 9 | SE 8 | E 14 | E 12 | E 11 | ESE 9 | E 8 | S 6 | E 9 | SE 8 | S 9 | S 10 | — | S 10 | E 15 | S 9 | E 14 | E 13 |
— | 7 | 15 | 4 | 3 | 2 | 8 | 1 | 1 | 2 | 3 | 2 | 2 | — | 8 | 5 | 6 | 4 | 4 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | — | — | — | — | — | — | — | — | — | SSW 3 | S 3 | — | — | — | — | WSW 3 | — | SW 3 |
86 | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | 1 | — | 3 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 47 | 13 | 47 | 0 | 0 | 47 | 0 | 13 | 13 | 13 | 1 | 13 | 0 | 0 | 769 | 0 | 0 | 0 | 1 |
Best forecast wave conditions in Sunshine Coast | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.











