La Posta Surf Break

Lat Long: 34.92° S 54.85° W

La Posta 48 hour detailed Surf Forecast

Issued: 8 pm 15 Sep 2026 (local time)

Forecast update in  hr  min

Today's La Posta sea temperature is
12.5°C
1.1° 

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


How big are the waves at La Posta today (16 Sep):

  • Morning surf: Morning surf (16 Sep, local time) - 3.5ft (1.1m), 7s period with S swell.
  • Afternoon surf: Afternoon surf (16 Sep, local time) - 4ft (1.2m), 9s period with S swell.
  • Evening surf: Evening surf (16 Sep, local time) - 4ft (1.2m), 9s period with SSE swell.

The current surf forecast for La Posta at 4AM is: 1.3m 6s primary swell from a South direction and 0.3m 8s secondary swell from a East direction, 0.2m 12s secondary swell from a South-southeast direction (forecast issued at 08:00pm September 15). The wind direction is predicted to be onshore.

Time (-03) & DateWave HeightWave Period
Morning (16 Sep)3.5ft (1.1m)7s
Afternoon (16 Sep)4ft (1.2m)9s
Evening (16 Sep)4ft (1.2m)9s

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


Short Range Forecast

Mostly dry. Very mild (max 18°C on Thu afternoon, min 7°C on Tue night). Wind will be generally light.

Tue
15
Wednesday
16
Thursday
17
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
Rating
(10 max)
0
0
0
0
0
0
1
0
0
1
1
1
1
1
1
1
1
1
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.2
SSW
5
1.3
SSW
6
1.2
SSW
6
1.3
S
6
1.2
S
6
1.1
S
7
1.2
S
9
1.2
S
9
1.2
SSE
9
1.2
SSE
9
1.1
SSE
9
1
SSE
9
0.9
SSE
9
0.9
SSE
9
0.9
SSE
9
0.9
SSE
9
0.8
SSE
9
0.6
SSE
9
Wave Graph
Metric surfscale
Energy kJ
69
98
112
130
113
123
246
251
259
237
225
185
149
146
119
119
94
65
Wind (km/h)
25
SSW
25
S
25
S
20
S
15
SSE
15
SSE
10
SE
15
ESE
20
E
20
NE
20
NNE
20
NNE
15
NNE
15
N
10
NNE
10
ENE
15
ENE
15
NNE
Wind State
on
on
on
on
on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
off
off
off
cross-off
cross-off
cross-off
cross-off
High Tide
00:14AM0.19m
5:29AM0.19m
11:37AM0.28m
1:10AM0.18m
12:21PM0.27m
Low Tide
7:21PM0.04m
2:41AM0.17m
6:57AM0.18m
8:07PM0.06m
3:19AM0.17m
8:50PM0.07m
cloud
cloud
cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:37
6:35
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:30
6:30
6:30
 mm
Temp °C
9
8
8
8
7
7
8
9
8
8
8
8
8
9
15
17
18
16
Feels °C
3
2
2
2
3
3
5
5
3
3
3
3
4
5
12
14
15
13
  • 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 

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 La Posta 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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