
Surf Forecasts:
Goolwa Rivermouth surf forecast from 12 Sep 2026:
- Best quality surf: Wednesday 16 Sep, 3AM (local time) - 10ft (3.0m), 15s period, SSW swell with cross-shore winds.
- Most powerful swell: Tuesday 15 Sep, 6PM (local time) - 11ft (3.5m), 14s period, SW swell with 4,747 kJ wave energy.
- Next surfable swell (1★+): Sunday 13 Sep, 3AM (local time) - 4ft (1.2m), 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 13) at 3AM. The primary swell is predicted to be 1.2m and 14s period with a secondary swell of 0.8m and 18s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Goolwa Rivermouth in the next 16 days are 3.5m 14s and forecast to arrive on Tuesday (Sep 15) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 4s period and expected on Saturday (Sep 19) at 6PM.
| Wave Type | Time (ACST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Sun 13th Sep) | 4ft (1.2m) 14s |
| Best Surf | 3AM (Wed 16th Sep) | 10ft (3.0m) 15s |
| Most Powerful | 6PM (Tue 15th Sep) | 11ft (3.5m) 14s |
Table - best surf conditions forecast for Goolwa Rivermouth over the next 16 days.
Short Range ForecastLight rain (total 4mm), mostly falling on Sun morning. Warm (max 21°C on Sat night, min 12°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Very mild (max 19°C on Fri morning, min 6°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||
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 | SW 16 | SW 16 | SW 15 | SSW 14 | SW 13 | SW 12 | SW 13 | SW 14 | SSW 14 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 17 | SW 16 | SSW 15 |
Wave Graph | |||||||||||||||||||
1118 | 929 | 989 | 496 | 337 | 245 | 374 | 1083 | 4590 | 3338 | 3574 | 3670 | 3134 | 1797 | 1204 | 837 | 1543 | 1070 | 576 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | cross-on | cross-on | cross-on | cross-on | on | on | on | cross-on | cross | cross-on | cross | cross-off | cross | off | cross-off | cross | off |
High Tide | 3:13AM0.65m | 3:01PM0.55m | 3:34AM0.73m | 3:14PM0.47m | 3:58AM0.77m | 3:21PM0.41m | 4:24AM0.79m | 3:20PM0.36m | 4:53AM0.78m | 2:56PM0.33m | 5:27AM0.74m | ||||||||
Low Tide | 9:20AM0.17m | 8:58PM0.10m | 10:00AM0.18m | 9:01PM0.08m | 10:39AM0.22m | 9:07PM0.07m | 11:22AM0.26m | 9:14PM0.06m | 12:20PM0.31m | 9:19PM0.06m | 9:19PM0.07m | ||||||||
— | 6:18 | — | — | 6:16 | — | — | 6:15 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | |
6:01 | — | 6:02 | — | — | 6:04 | — | — | 6:04 | — | — | 6:05 | — | — | 6:06 | — | — | 6:07 | — | |
mm | — | 3 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 21 | 17 | 16 | 13 | 14 | 15 | 16 | 13 | 13 | 12 | 10 | 10 | 10 | 10 | 13 | 13 | 19 | 19 | 19 |
Feels °C | 17 | 15 | 11 | 10 | 11 | 11 | 13 | 7 | 6 | 6 | 5 | 5 | 5 | 7 | 10 | 10 | 15 | 15 | 15 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 16 | — | SW 15 | SSW 14 | SW 13 | SW 17 | SW 13 | SW 14 | SSW 14 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 17 | SW 16 | SSW 15 |
1118 | 929 | — | 496 | 337 | 245 | 238 | 1083 | 4590 | 3338 | 3574 | 3670 | 3134 | 1797 | 1204 | 837 | 1543 | 1070 | 576 | |
Swell 2 Height (m) Direction Period (s) | — | N 3 | — | — | SW 19 | SW 18 | SW 17 | SSW 16 | — | — | — | — | — | — | — | SSW 19 | — | — | — |
— | 2 | — | — | 59 | 82 | 287 | 525 | — | — | — | — | — | — | — | 251 | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | WNW 4 | — | — | SSW 20 | WSW 18 | — | — | — | — | — | — | — | — | — | — | — | — | — |
— | 1 | — | — | 37 | 63 | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | NE 3 | NNW 4 | SW 16 | WSW 5 | WSW 5 | SW 5 | SW 12 | SSW 6 | SSW 14 | — | — | — | — | — | — | — | N 3 | — | NNE 3 |
3 | 10 | 989 | 61 | 45 | 47 | 374 | 132 | 3066 | — | — | — | — | — | — | — | 1 | — | 3 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 449 | 17 | 433 | 23 | 185 | 155 | 185 | 155 | 184 | 182 | 19 | 15 | 10 | 0 | 0 | 17 | 0 |
Best forecast wave conditions in South Australia - East Coast | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










