Surf Forecasts:
How big are the waves at Posties today (20 Sep):
- Morning surf: Morning surf (20 Sep, local time) - 8ft (2.4m), 15s period with SW swell.
- Afternoon surf: Afternoon surf (20 Sep, local time) - 7.5ft (2.3m), 14s period with SW swell.
- Evening surf: Evening surf (20 Sep, local time) - 11ft (3.5m), 14s period with WSW swell.
The current surf forecast for Posties at 5PM is: 3.5m 14s primary swell from a West-southwest direction and 2.3m 14s secondary swell from a Southwest direction (forecast issued at 08:30am September 20). The wind direction is predicted to be cross-onshore.
| Time (ACST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Sep) | 8ft (2.4m) | 15s |
| Afternoon (20 Sep) | 7.5ft (2.3m) | 14s |
| Evening (20 Sep) | 11ft (3.5m) | 14s |
Table - waves today at Posties. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 21°C on Sun morning, min 8°C on Mon night). Winds decreasing (strong winds from the WNW on Sun morning, light winds from the E by Mon night). | ||||||||||||||||||||||
Sunday 20 | Monday 21 | Tuesday 22 | ||||||||||||||||||||
6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SW 15 | SW 15 | SW 14 | SW 14 | WSW 14 | WSW 14 | SW 11 | SW 12 | SW 12 | SW 14 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 15 | SW 16 | SSW 16 | SW 16 | SW 15 | SW 15 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 3804 | 2559 | 2090 | 2061 | 4369 | 5009 | 3888 | 3770 | 5609 | 8488 | 9433 | 9564 | 8892 | 8370 | 8488 | 7552 | 8515 | 11967 | 11797 | 10875 | 8817 | 7151 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross | cross-on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | off | off | cross-off | cross-on | cross | cross | cross-off |
High Tide | 4:37AM0.78m | 12:18PM0.82m | 11:39AM0.87m | 11:29AM0.93m | ||||||||||||||||||
Low Tide | 7:55AM0.75m | 8:31PM0.29m | 7:59PM0.36m | 7:20PM0.40m | ||||||||||||||||||
 |  |  | |  |  | | | | | | | | |  | | | | | | | | |
 | 6:01 | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 6:01 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 21 | 18 | 15 | 14 | 12 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 10 | 9 | 8 | 9 | 11 | 11 | 11 | 10 |
Feels °C | 8 | 11 | 10 | 8 | 8 | 5 | 2 | 2 | 3 | 4 | 5 | 5 | 6 | 7 | 7 | 5 | 4 | 6 | 7 | 7 | 7 | 6 |
Swell 1 Height (m) Direction Period (s) | SW 15 | SW 15 | SW 14 | SW 14 | SW 14 | — | — | SSW 17 | SW 12 | SW 14 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 15 | SW 16 | SSW 16 | SW 16 | SW 15 | SW 15 |
| kJ | 3804 | 2559 | 2090 | 2061 | 2594 | — | — | 1274 | 5609 | 8488 | 9433 | 9564 | 8892 | 8370 | 8488 | 7552 | 8515 | 11967 | 11797 | 10875 | 8817 | 7151 |
Swell 2 Height (m) Direction Period (s) | W 7 | — | — | — | — | — | — | — | SSW 17 | — | — | W 15 | W 13 | W 13 | W 12 | W 12 | SSW 18 | — | — | — | — | — |
| kJ | 113 | — | — | — | — | — | — | — | 992 | — | — | 38 | 130 | 813 | 497 | 480 | 1571 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | N 4 | NW 6 | WNW 7 | WNW 8 | WSW 14 | WSW 14 | SW 11 | SW 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 24 | 226 | 610 | 627 | 4369 | 5009 | 3888 | 3770 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 278 | 287 | 788 | 286 | 287 | 313 | 301 | 419 | 419 | 1034 | 384 | 384 | 85 | 301 | 0 | 0 | 0 | 0 | 63 | 336 | 9 | 0 |
Best forecast wave conditions in South Australia - East Coast | ||||||||||||||||||||||
Best forecast wave conditions in Australia | ||||||||||||||||||||||
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