La Posta Surf Break

Lat Long: 34.92° S 54.85° W

La Posta 48 hour detailed Surf Forecast

Issued: 8 pm 19 Aug 2026 (local time)

Forecast update in  hr  min

Today's La Posta sea temperature is
10.6° C
0.3° 

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 (20 Aug):

  • Morning surf: Morning surf (20 Aug, local time) - 1.5ft (0.4m), 8s period with E swell.
  • Afternoon surf: Afternoon surf (20 Aug, local time) - 2ft (0.6m), 4s period with SE swell.
  • Evening surf: Evening surf (20 Aug, local time) - 3ft (0.9m), 4s period with SSW swell.

The current surf forecast for La Posta at 1AM is: 0.5m 7s primary swell from a South direction and 0.4m 8s secondary swell from a East direction (forecast issued at 08:00pm August 19). The wind direction is predicted to be cross-offshore.

Time (-03) & DateWave HeightWave Period
Morning (20 Aug)1.5ft (0.4m)8s
Afternoon (20 Aug)2ft (0.6m)4s
Evening (20 Aug)3ft (0.9m)4s

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


Short Range Forecast

Heavy rain (total 34mm), heaviest during Thu afternoon. Very mild (max 11°C on Wed night, min 7°C on Thu night). Winds increasing (light winds from the ENE on Wed night, strong winds from the SSW by Thu night).

Wed
19
Thursday
20
Friday
21
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
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.5
S
7
0.5
S
7
0.5
S
7
0.4
E
8
0.4
S
7
0.4
E
8
0.3
SSW
6
0.6
SE
4
0.5
ESE
4
0.9
SSW
4
1.7
SSW
6
2.1
SSW
7
2.2
S
8
2.1
S
8
2
S
8
1.9
S
8
2
S
9
2
S
9
Wave Graph
Metric surfscale
Energy kJ
26
25
23
22
15
22
8
11
10
21
167
385
551
545
503
481
600
670
Wind (km/h)
10
E
10
ENE
10
ENE
15
NE
10
NE
15
E
20
SE
20
SSE
25
SSW
25
SW
45
SSW
35
SSW
40
SSW
35
SSW
30
SSW
35
SW
35
SSW
25
SSW
Wind State
cross
cross-off
cross-off
cross-off
cross-off
cross
cross-on
on
on
cross-on
on
on
on
on
on
cross-on
cross-on
cross-on
High Tide
6:41AM0.18m
2:05PM0.26m
4:53AM0.18m
3:07PM0.26m
Low Tide
9:32PM0.06m
8:36AM0.18m
10:21PM0.07m
7:46AM0.17m
clear
cloud
cloud
cloud
light rain
light rain
mod rain
heavy rain
mod rain
cloud
cloud
cloud
clear
part cloud
cloud
cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
7:13
7:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:09
6:10
6:12
 mm
1
5
7
12
9
Temp °C
11
10
11
10
10
10
10
10
10
11
9
8
7
8
9
8
9
9
Feels °C
8
7
8
7
8
7
6
6
5
5
0
-1
-3
-1
1
-1
1
2
  • 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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