Surf Forecasts:
Posties surf forecast from 12 Oct 2026:
- Best quality surf: Monday 19 Oct, 4PM (local time) - 8ft (2.5m), 16s period, WSW swell with cross-offshore winds.
- Most powerful swell: Tuesday 13 Oct, 10AM (local time) - 18ft (5.5m), 14s period, SW swell with 11,266 kJ wave energy.
- Next surfable swell (1★+): Thursday 15 Oct, 10PM (local time) - 5ft (1.5m), 11s period with SW swell.
Best Forecast Surf Conditions for Posties this week:
The surf forecast for Posties over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Oct 15) at 10PM. The primary swell is predicted to be 1.5m and 11s period with a secondary swell of 0.9m and 6s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Posties in the next 16 days are 5.5m 14s and forecast to arrive on Tuesday (Oct 13) at 10AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 6s period and expected on Friday (Oct 16) at 1AM.
| Wave Type | Time (ACDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Thu 15th Oct) | 5ft (1.5m) 11s |
| Best Surf | 4PM (Mon 19th Oct) | 8ft (2.5m) 16s |
| Most Powerful | 10AM (Tue 13th Oct) | 18ft (5.5m) 14s |
Table - best surf conditions forecast for Posties over the next 16 days.
Short Range ForecastMostly dry. Very mild (max 17°C on Thu afternoon, min 9°C on Wed night). Winds decreasing (fresh winds from the WSW on Mon night, light winds from the SSE by Tue night). | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Sun morning, min 14°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 13 | Wednesday 14 | Thursday 15 | Friday 16 | Saturday 17 | Sunday 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) | WSW 14 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 11 | SW 13 | SW 13 | SW 12 | SW 17 | SW 16 | SW 15 | SW 14 | SW 14 | WSW 14 |
Wave Graph  | |||||||||||||||||||
 kJ | 7038 | 11266 | 9282 | 6464 | 3943 | 2949 | 1341 | 960 | 711 | 534 | 755 | 649 | 367 | 173 | 208 | 215 | 195 | 368 | 1023 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | cross | cross | cross-off | cross-off | cross | off | off | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | cross-off |
High Tide | 2:14AM1.11m | 1:28PM0.75m | 2:40AM1.11m | 1:37PM0.74m | 3:06AM1.09m | 1:43PM0.74m | 3:32AM1.06m | 1:45PM0.74m | 3:59AM1.01m | 1:36PM0.74m | 4:27AM0.95m | 1:03PM0.75m | |||||||
Low Tide | 8:34AM0.42m | 7:39PM0.10m | 8:56AM0.47m | 7:57PM0.09m | 9:17AM0.53m | 8:14PM0.10m | 9:38AM0.60m | 8:30PM0.14m | 10:00AM0.66m | 8:42PM0.21m | 10:26AM0.72m | 8:46PM0.28m | |||||||
 |  |  | | |  |  | | | | | | | | | | | | | |
 | — | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — |
 | 7:20 | — | 7:21 | — | — | 7:22 | — | — | 7:22 | — | — | 7:23 | — | — | 7:24 | — | — | 7:25 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 11 | 11 | 11 | 11 | 11 | 10 | 14 | 17 | 16 | 22 | 22 | 21 | 23 | 22 | 20 | 25 | 25 | 24 |
Feels °C | 6 | 4 | 6 | 7 | 7 | 4 | 4 | 9 | 13 | 13 | 19 | 20 | 19 | 20 | 21 | 18 | 21 | 23 | 20 |
Swell 1 Height (m) Direction Period (s) | — | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 11 | SW 13 | SW 13 | SW 12 | SW 12 | SW 16 | SW 15 | SW 14 | SW 14 | WSW 14 |
| kJ | — | 11266 | 9282 | 6464 | 3943 | 2949 | 1341 | 960 | 711 | 534 | 755 | 649 | 367 | 167 | 208 | 215 | 195 | 368 | 1023 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | S 11 | SSE 10 | SSE 9 | — | SE 6 | SE 7 | SSW 20 | SE 5 | SW 17 | SW 12 | WSW 12 | W 11 | W 11 | WSW 18 |
| kJ | — | — | — | — | — | 375 | 383 | 169 | — | 40 | 47 | 38 | 23 | 173 | 114 | 82 | 65 | 57 | 835 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | S 8 | S 8 | S 8 | SW 18 | ESE 6 | — | ESE 4 | SE 5 | ESE 5 | WSW 15 |
| kJ | — | — | — | — | — | — | — | — | — | 28 | 12 | 5 | 113 | 18 | — | 7 | 6 | 2 | 121 |
Wind waves Height (m) Direction Period (s) | WSW 14 | — | — | — | — | — | — | — | SSE 8 | ESE 6 | — | SE 7 | — | NE 3 | SE 6 | — | N 3 | E 5 | NNE 3 |
| kJ | 7038 | — | — | — | — | — | — | — | 136 | 75 | — | 37 | — | 2 | 17 | — | 2 | 4 | 5 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 286 | 419 | 419 | 85 | 9 | 385 | 20 | 20 | 433 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 11 | 0 | 0 |
Best forecast wave conditions in South Australia - East Coast | |||||||||||||||||||
Best forecast wave conditions in Australia | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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 Posties 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 Posties Surf forecast
The above surf forecast table for Posties provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Posties can be found by selecting the local surf guide option on the grey menu. Our Posties 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 (Posties) 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 Posties 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.
Posties is 7 km (4 miles) from Allendale East. If you plan a holiday in South Australia - East Coast, look for hotels and other accommodation in Allendale East. Allendale East has rooms for a wide range of budgets as well as car hire and transport links.
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