Posties Surf Break

Lat Long: 38.06° S 140.76° E

Issued: 8 am 20 Jun 2026 (local time)

Forecast update in  hr  min

Today's Posties sea temperature is
16.2° C

1.7°C warmer than normal for this time of year

Posties surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Posties today (20 Jun):

  • Morning surf: Morning surf (20 Jun, local time) - 13ft (4.0m), 16s period with SSW swell.
  • Afternoon surf: Afternoon surf (20 Jun, local time) - 11ft (3.5m), 15s period with SSW swell.
  • Evening surf: Evening surf (20 Jun, local time) - 8ft (2.5m), 14s period with SW swell.

The current surf forecast for Posties at 2PM is: 3.5m 15s primary swell from a South-southwest direction and 1.3m 16s secondary swell from a South-southwest direction (forecast issued at 08:30am June 20). The wind direction is predicted to be cross-onshore.

Time (ACST) & DateWave HeightWave Period
Morning (20 Jun)13ft (4.0m)16s
Afternoon (20 Jun)11ft (3.5m)15s
Evening (20 Jun)8ft (2.5m)14s

Table - waves today at Posties. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 3mm), mostly falling on Sat night. Very mild (max 13°C on Sat afternoon, min 10°C on Mon morning). Wind will be generally light.

Saturday
20
Sunday
21
Monday
22
Tue
23
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
12 AM
3 AM
Rating
(10 max)
0
0
0
0
3
2
2
2
3
2
2
2
3
4
4
4
4
3
2
2
3
3
3
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
4
SSW
16
4
SSW
16
3.5
SSW
16
3.5
SSW
15
2.5
SW
14
2.5
SW
14
3
SSW
15
2.5
SSW
15
2.5
SSW
14
2.5
SSW
14
2.5
SSW
14
2.5
SSW
14
2.5
SW
13
2.4
SW
14
2.4
SW
14
2.3
SW
15
2.3
SW
15
2.2
SW
15
2.3
SW
15
2.1
SW
15
2.3
SW
15
2.2
SW
15
2.3
SW
14
2.4
SW
14
Wave Graph
Metric surfscale
Energy kJ
8724
7317
5884
4644
2680
2527
3319
3114
3029
2721
2503
2430
2243
2130
2080
2264
2203
2061
2178
1941
2169
2010
2232
2252
Wind (km/h)
30
S
25
SSE
25
SSE
20
SSE
20
SSE
15
SE
20
SSE
15
S
15
S
10
S
15
S
15
S
10
S
0
SSW
5
WNW
10
NNW
10
NNW
15
NNW
20
NW
20
NW
20
NNW
25
NW
20
NNW
20
NW
Wind State
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
glassy
cross-off
cross-off
cross-off
cross
cross
cross-off
cross-off
cross-off
cross
High Tide
3:38PM1.08m
2:32AM0.74m
3:58PM1.01m
4:04AM0.77m
4:14PM0.96m
Low Tide
7:48AM0.40m
10:44PM0.67m
8:37AM0.50m
10:54PM0.62m
9:29AM0.61m
11:21PM0.55m
cloud
part cloud
cloud
clear
part cloud
part cloud
light rain
light rain
cloud
cloud
part cloud
clear
clear
part cloud
clear
part cloud
cloud
cloud
cloud
part cloud
cloud
part cloud
part cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:22
7:22
7:22
7:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
4:52
4:53
4:53
4:53
 mm
1
1
1
Temp °C
11
12
12
12
13
12
12
12
12
12
12
12
12
12
11
11
11
10
10
13
12
11
11
12
Feels °C
4
6
6
6
7
8
8
8
8
9
8
9
9
11
9
8
7
6
5
8
8
6
7
9
Swell 1
Height (m)
Direction
Period (s)
4
SSW
16
4
SSW
16
3.5
SSW
16
3.5
SSW
15
2.5
SW
14
2.5
SW
14
3
SSW
15
2.5
SSW
15
2.5
SSW
14
2.5
SSW
14
2.5
SSW
14
2.5
SSW
14
2.5
SW
13
2.4
SW
14
2.4
SW
14
2.3
SW
15
2.3
SW
15
2.2
SW
15
2.3
SW
15
2.1
SW
15
2.3
SW
15
2.2
SW
15
2.3
SW
14
2.4
SW
14
Energy kJ
8724
7317
5884
4644
2680
2527
3319
3114
3029
2721
2503
2430
2243
2130
2080
2264
2203
2061
2178
1941
2169
2010
2232
2252
Swell 2
Height (m)
Direction
Period (s)
1.4
SW
16
1.3
SSW
16
0.2
ESE
6
0.2
ESE
6
0.2
ESE
6
0.2
ESE
6
0.4
SW
18
Energy kJ
1044
853
3
3
3
3
111
Swell 3
Height (m)
Direction
Period (s)
0.2
ESE
6
Energy kJ
3
Wind waves
Height (m)
Direction
Period (s)
4
SSW
11
3
SSW
10
1.7
SSE
9
1.6
SSE
9
0.6
WNW
3
0.7
WNW
4
0.8
WNW
4
0.6
NNW
4
0.8
NW
4
0.7
NW
5
Energy kJ
3876
2210
427
366
7
17
25
11
25
24
Nearest Offshore or Glassy
Rating
(10 max)
3
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
4
3
3
4
Distance (km)
419
419
419
419
133
133
133
133
85
85
85
85
20
0
0
0
0
1
20
20
79
79
79
79
Best forecast wave conditions in South Australia - East Coast
Rating
(10 max)
4
4
4
4
4
4
4
4
4
4
4
4
4
4
3
3
3
3
3
3
Best forecast wave conditions in Australia
Rating
(10 max)
4
6
5
5
5
5
5
5
5
4
4
4
4
4
4
4
4
4
5
4
4
4
4
4
Header Global
Rating
(10 max)
4
6
5
5
5
5
5
5
8
9
9
9
8
8
6
8
8
7
6
8
6
6
5
5
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

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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 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.


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