Surf Forecasts:
Goolwa Rivermouth surf forecast from 5 Sep 2026:
- Best quality surf: Sunday 6 Sep, 12AM (local time) - 13ft (4.0m), 14s period, SW swell with cross-onshore winds.
- Most powerful swell: Wednesday 9 Sep, 3PM (local time) - 16ft (5.0m), 18s period, SSW swell with 14,326 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 12AM (local time) - 13ft (4.0m), 14s period with SW 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 Sunday (Sep 06) at 12AM. The primary swell is predicted to be 4.0m and 14s period with a secondary swell of 3.0m and 14s. The wind is predicted to be cross-onshore as the swell arrives.
The most powerful waves expected at Goolwa Rivermouth in the next 16 days are 5.0m 18s and forecast to arrive on Wednesday (Sep 09) at 3PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Saturday (Sep 12) at 9AM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Sun 6th Sep) | 13ft (4.0m) 14s |
| Best Surf | 12AM (Sun 6th Sep) | 13ft (4.0m) 14s |
| Most Powerful | 3PM (Wed 9th Sep) | 16ft (5.0m) 18s |
Table - best surf conditions forecast for Goolwa Rivermouth over the next 16 days.
Short Range ForecastMostly dry. Very mild (max 14°C on Sat afternoon, min 9°C on Mon night). Winds decreasing (strong winds from the W on Sat afternoon, calm by Mon night). | Days 5-7 Weather SummaryMostly dry. Very mild (max 13°C on Fri morning, min 9°C on Thu night). Winds decreasing (strong winds from the SSE on Tue night, light winds from the ENE by Thu night). | |||||||||||||||||||
Sat 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | ||||||||||||||
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 11 | SW 14 | SW 14 | SW 13 | SW 14 | SW 13 | SSW 13 | SSW 14 | SW 17 | SW 17 | SW 16 | SSW 16 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 14 | SSW 14 | SSW 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 3267 | 5898 | 2334 | 1684 | 1249 | 679 | 599 | 1014 | 2778 | 2621 | 2444 | 4340 | 14326 | 10430 | 7282 | 5352 | 3555 | 2148 | 1960 | 3123 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | on | on | on | cross-on | on | cross | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross | off |
High Tide | 10:05AM0.73m | 11:55AM0.78m | 12:48PM0.82m | 4:03AM0.31m | 1:26PM0.82m | 3:00AM0.35m | 1:57PM0.78m | 2:50AM0.44m | 2:23PM0.72m | 2:58AM0.55m | ||||||||||
Low Tide | 9:11PM-0.03m | 9:09PM-0.05m | 9:10PM-0.04m | 9:11PM-0.00m | 5:34AM0.30m | 9:09PM0.05m | 7:01AM0.25m | 9:05PM0.09m | 7:54AM0.20m | 9:00PM0.11m | ||||||||||
 |  |  | |  | | | | |  | | | | | | | | | | | |
 | — | — | 6:28 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — |
 | 5:57 | — | — | 5:58 | — | — | 5:59 | — | — | 5:59 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 13 | 13 | 14 | 13 | 13 | 13 | 11 | 10 | 11 | 12 | 10 | 10 | 11 | 11 | 11 | 11 | 13 | 16 | 15 |
Feels °C | 5 | 9 | 10 | 10 | 10 | 10 | 9 | 7 | 7 | 6 | 7 | 4 | 4 | 7 | 7 | 7 | 8 | 11 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | — | SW 14 | SW 14 | SW 13 | S 23 | SW 13 | SSW 13 | SSW 14 | SW 17 | SW 17 | SW 16 | SW 19 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 16 | SSW 14 | SSW 14 | SSW 16 |
| kJ | — | 5898 | 2334 | 1684 | 11 | 679 | 599 | 1014 | 2778 | 2621 | 2444 | 2398 | 14326 | 10430 | 7282 | 5352 | 3555 | 2148 | 1960 | 3123 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | SW 23 | SW 22 | SW 21 | SW 19 | — | — | — | SW 20 | — | — | — | — | — | SW 24 | — | — |
| kJ | — | — | — | — | 21 | 73 | 212 | 949 | — | — | — | 2524 | — | — | — | — | — | 22 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | WSW 22 | WSW 21 | WSW 19 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | 45 | 173 | 584 | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 11 | SW 14 | — | — | SW 14 | — | — | — | — | — | SSW 5 | SSW 16 | SSW 18 | — | — | — | — | — | — | — |
| kJ | 3267 | 3644 | — | — | 1249 | — | — | — | — | — | 47 | 4340 | 10323 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1002 | 17 | 155 | 155 | 155 | 17 | 155 | 155 | 155 | 155 | 929 | 1157 | 1363 | 155 | 155 | 155 | 19 | 15 | 18 | 15 |
Best forecast wave conditions in South Australia - East Coast | ||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||
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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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