Surf Forecasts:
Goolwa Rivermouth surf forecast from 19 Aug 2026:
- Best quality surf: Friday 21 Aug, 3AM (local time) - 7ft (2.1m), 15s period, SW swell with cross-onshore winds.
- Most powerful swell: Saturday 22 Aug, 3AM (local time) - 8ft (2.4m), 16s period, SW swell with 2,832 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 3AM (local time) - 5.5ft (1.7m), 10s period with WSW swell.
Best Forecast Surf Conditions for Goolwa Rivermouth this week:
The surf forecast for Goolwa Rivermouth over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 3AM. The primary swell is predicted to be 1.7m and 10s period with a secondary swell of 1.1m and 14s. Another secondary swell of 1.0m and 7s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Goolwa Rivermouth in the next 16 days are 2.4m 16s and forecast to arrive on Saturday (Aug 22) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Thursday (Aug 20) at 9AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Thu 20th Aug) | 5.5ft (1.7m) 10s |
| Best Surf | 3AM (Fri 21st Aug) | 7ft (2.1m) 15s |
| Most Powerful | 3AM (Sat 22nd Aug) | 8ft (2.4m) 16s |
Table - best surf conditions forecast for Goolwa Rivermouth over the next 16 days.
Short Range ForecastMostly dry. Very mild (max 15°C on Wed afternoon, min 12°C on Wed night). Mainly fresh winds. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Mon night. Very mild (max 16°C on Sun afternoon, min 10°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | ||||||||||||||
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) | SW 15 | WSW 10 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 15 | SW 14 | SW 14 | SW 13 | SW 12 | SW 14 | SW 14 |
Wave Graph  | ||||||||||||||||||||
 kJ | 284 | 409 | 918 | 1467 | 813 | 1760 | 1255 | 2687 | 2624 | 2203 | 1649 | 1349 | 841 | 1341 | 752 | 711 | 940 | 494 | 1983 | 2229 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross | cross-on | cross-on | cross-on | cross | cross-on | on | cross-off | off | cross | cross-off | cross | on | cross-on | on | on | cross-on |
High Tide | 3:44PM0.43m | 6:06AM0.70m | 2:38PM0.41m | 6:49AM0.66m | 8:29AM0.63m | 11:55AM0.67m | 12:46PM0.74m | 1:20PM0.80m | ||||||||||||
Low Tide | 10:22PM0.04m | 1:04PM0.41m | 10:21PM0.04m | 10:11PM0.05m | 9:52PM0.05m | 9:32PM0.04m | 9:23PM0.03m | 9:23PM0.02m | ||||||||||||
 |  |  | | |  | |  | | | | | | | | |  | | | | |
 | — | — | 6:50 | — | — | 6:48 | — | — | 6:48 | — | — | 6:47 | — | — | 6:46 | — | — | 6:43 | — | — |
 | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:49 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — |
Temp °C | 15 | 13 | 15 | 15 | 13 | 13 | 14 | 14 | 14 | 13 | 12 | 15 | 16 | 15 | 16 | 15 | 13 | 12 | 13 | 12 |
Feels °C | 9 | 10 | 9 | 10 | 11 | 10 | 10 | 11 | 11 | 10 | 11 | 13 | 14 | 13 | 14 | 12 | 10 | 6 | 6 | 6 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 14 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 15 | SW 14 | SW 14 | WSW 18 | SW 12 | SW 14 | — |
| kJ | 262 | 280 | 918 | 1467 | 813 | 1760 | 1255 | 2687 | 2624 | 2203 | 1649 | 1349 | 841 | 1341 | 752 | 711 | 123 | 494 | 1521 | — |
Swell 2 Height (m) Direction Period (s) | SW 20 | SW 19 | SW 7 | SW 13 | WSW 16 | SW 18 | SW 18 | — | SW 24 | SSW 21 | SW 19 | SW 18 | SW 16 | — | SSW 20 | SW 20 | SSW 18 | SW 16 | — | — |
| kJ | 65 | 131 | 65 | 136 | 788 | 409 | 679 | — | 87 | 305 | 738 | 711 | 757 | — | 40 | 60 | 123 | 264 | — | — |
Swell 3 Height (m) Direction Period (s) | WSW 20 | SW 18 | — | NNW 4 | WSW 16 | SW 18 | SSW 18 | — | SSW 24 | SW 21 | SW 20 | — | — | — | WSW 20 | WSW 20 | — | WSW 16 | — | — |
| kJ | 40 | 164 | — | 4 | 525 | 703 | 497 | — | 54 | 117 | 388 | — | — | — | 40 | 37 | — | 229 | — | — |
Wind waves Height (m) Direction Period (s) | W 10 | WSW 10 | WNW 3 | WSW 10 | SW 11 | — | — | — | — | — | — | — | — | — | NW 3 | WNW 4 | SW 13 | SW 6 | SW 14 | SW 14 |
| kJ | 284 | 409 | 7 | 690 | 497 | — | — | — | — | — | — | — | — | — | 3 | 6 | 940 | 92 | 1983 | 2229 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 561 | 10 | 17 | 50 | 17 | 17 | 17 | 15 | 17 | 50 | 0 | 0 | 15 | 0 | 10 | 17 | 155 | 155 | 155 | 53 |
Best forecast wave conditions in South Australia - East Coast | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Goolwa Rivermouth 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 Goolwa Rivermouth Surf forecast
The above surf forecast table for Goolwa Rivermouth provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Goolwa Rivermouth can be found by selecting the local surf guide option on the grey menu. Our Goolwa Rivermouth 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 (Goolwa Rivermouth) 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 Goolwa Rivermouth 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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