Surf Forecasts:
Twinnies surf forecast from 17 Aug 2026:
- Best quality surf: Friday 21 Aug, 1AM (local time) - 4.5ft (1.3m), 8s period, E swell with glassy winds.
- Most powerful swell: Tuesday 18 Aug, 7PM (local time) - 7ft (2.2m), 8s period, ESE swell with 525 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 1AM (local time) - 4.5ft (1.3m), 8s period with E swell.
Best Forecast Surf Conditions for Twinnies this week:
The surf forecast for Twinnies over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 1AM. The primary swell is predicted to be 1.3m and 8s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Twinnies in the next 16 days are 2.2m 8s and forecast to arrive on Tuesday (Aug 18) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (AEST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Fri 21st Aug) | 4.5ft (1.3m) 8s |
| Best Surf | 1AM (Fri 21st Aug) | 4.5ft (1.3m) 8s |
| Most Powerful | 7PM (Tue 18th Aug) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Twinnies over the next 16 days.
Short Range ForecastModerate rain (total 19mm), heaviest on Tue morning. Very mild (max 19°C on Wed morning, min 15°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Sat morning, min 16°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
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 7 | ESE 8 | ESE 8 | ESE 7 | ENE 7 | SE 8 | ESE 8 | SE 9 | E 8 | E 8 | E 7 | E 7 | E 7 | E 7 | E 9 | E 8 | E 8 | ENE 8 | ENE 7 |
Wave Graph  | |||||||||||||||||||
 kJ | 428 | 375 | 397 | 415 | 166 | 113 | 361 | 176 | 233 | 187 | 155 | 126 | 103 | 83 | 190 | 169 | 153 | 123 | 125 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | glassy | cross-on | on | cross | cross | cross-on | cross-off | cross | cross-on | glassy |
High Tide | 11:10PM1.42m | 12:03PM1.41m | 11:44PM1.26m | 1:05PM1.36m | 00:24AM1.12m | 2:22PM1.35m | 1:26AM1.00m | 3:36PM1.38m | 3:07AM0.95m | 4:36PM1.46m | 4:27AM0.97m | 5:23PM1.55m | |||||||
Low Tide | 5:33AM0.36m | 6:04PM0.64m | 6:12AM0.41m | 7:15PM0.75m | 6:59AM0.45m | 8:54PM0.80m | 8:02AM0.48m | 10:23PM0.76m | 9:15AM0.48m | 11:23PM0.67m | 10:18AM0.45m | 00:04AM0.57m | |||||||
 |  | | |  |  | | | |  | | |  | |  | | | | | |
 | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — |
 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — | — | 5:29 | — | — | 5:30 | — | — | 5:30 | — |
mm | 1 | 6 | 1 | 7 | — | — | 1 | 2 | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 18 | 18 | 17 | 19 | 18 | 17 | 19 | 19 | 18 | 19 | 19 | 17 | 20 | 19 | 18 | 20 | 19 | 18 |
Feels °C | 14 | 15 | 13 | 14 | 16 | 16 | 16 | 17 | 17 | 18 | 18 | 18 | 16 | 18 | 16 | 16 | 19 | 18 | 19 |
Swell 1 Height (m) Direction Period (s) | E 13 | E 14 | — | ESE 13 | ENE 7 | ENE 7 | E 7 | ENE 7 | E 8 | E 8 | E 7 | E 7 | E 7 | E 7 | E 9 | E 8 | E 8 | ENE 8 | ENE 7 |
| kJ | 3 | 4 | — | 35 | 166 | 105 | 94 | 76 | 233 | 187 | 155 | 126 | 103 | 83 | 190 | 169 | 153 | 123 | 125 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | ESE 11 | ESE 11 | ESE 10 | NE 9 | — | — | SSE 9 | SSE 8 | E 14 | ENE 9 | SE 7 | SE 7 | SSE 8 | — | NE 9 |
| kJ | — | — | — | — | 74 | 103 | 171 | 3 | — | — | 8 | 23 | 4 | 28 | 2 | 2 | 6 | — | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | E 13 | — | — | — | — | — | E 14 | SE 7 | SE 11 | ESE 10 | SE 8 | — | ESE 9 |
| kJ | — | — | — | — | — | — | 4 | — | — | — | — | — | 4 | 2 | 4 | 9 | 3 | — | 8 |
Wind waves Height (m) Direction Period (s) | ESE 7 | ESE 8 | ESE 8 | ESE 7 | SE 8 | SE 8 | ESE 8 | SE 9 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 428 | 375 | 397 | 415 | 131 | 113 | 361 | 176 | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 29 | 29 | 176 | 29 | 1 | 29 | 1 | 4 | 28 | 0 | 5 | 1 | 1 | 1 | 394 | 0 | 1 | 6 | 0 |
Best forecast wave conditions in Sunshine Coast | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Twinnies surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Twinnies Surf forecast
The above surf forecast table for Twinnies provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Twinnies can be found by selecting the local surf guide option on the grey menu. Our Twinnies 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 (Twinnies) 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 Twinnies 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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