La Posta Surf Break

Lat Long: 34.92° S 54.85° W

La Posta 48 hour detailed Surf Forecast

Issued: 2 am 21 Sep 2026 (local time)

Forecast update in  hr  min

Today's La Posta sea temperature is
12.6°C
0.8° 

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 (21 Sep):

  • Morning surf: Morning surf (21 Sep, local time) - 3ft (0.9m), 10s period with E swell.
  • Afternoon surf: Afternoon surf (21 Sep, local time) - 6.5ft (2.0m), 6s period with WSW swell.
  • Evening surf: Evening surf (21 Sep, local time) - 8ft (2.5m), 7s period with SW swell.

The current surf forecast for La Posta at 8AM is: 1.0m 10s primary swell from a East direction and 0.2m 10s secondary swell from a South direction, 1.2m 5s secondary swell from a West-southwest direction (forecast issued at 02:00am September 21). The wind direction is predicted to be cross-shore.

Time (-03) & DateWave HeightWave Period
Morning (21 Sep)3ft (0.9m)10s
Afternoon (21 Sep)6.5ft (2.0m)6s
Evening (21 Sep)8ft (2.5m)7s

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


Short Range Forecast

Some drizzle, heaviest during Tue morning. Very mild (max 14°C on Mon morning, min 6°C on Tue night). Winds decreasing (near gales from the WSW on Mon afternoon, calm by Tue night).

Monday
21
Tuesday
22
Wednesday
23
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
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
4
3
4
4
4
4
3
3
3
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)
1.1
E
11
1.1
E
10
1
E
10
0.9
E
10
1.7
WSW
6
2
WSW
6
2.3
WSW
7
2.5
SW
7
2.5
SW
8
2.5
SSW
9
2.3
SSW
10
2.3
SSW
9
2.2
SSW
7
2.2
S
12
2.5
S
14
3
S
14
2.5
SSE
14
2.4
SSE
14
2.2
SSE
14
2
SSE
13
1.9
SSE
13
1.7
SSE
13
1.6
SSE
13
1.5
SSE
12
Wave Graph
Metric surfscale
Energy kJ
287
237
184
146
180
299
476
728
912
1107
990
863
487
1507
2338
3472
2688
2285
1777
1377
1211
953
812
699
Wind (km/h)
5
WNW
25
W
25
W
40
W
45
W
50
W
55
WSW
55
SW
45
SW
40
SW
35
SW
30
SW
30
SW
30
SW
30
SSW
20
SSW
10
SW
5
N
15
NNW
15
N
15
N
5
NNW
10
N
15
N
Wind State
glassy
cross
cross
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
off
off
off
cross-off
off
off
High Tide
5:54AM0.19m
4:47PM0.23m
6:17AM0.19m
5:55PM0.23m
6:35AM0.20m
6:52PM0.24m
Low Tide
10:48PM0.10m
9:26AM0.17m
11:25PM0.11m
10:35AM0.15m
00:10AM0.12m
11:46AM0.13m
rain showers
clear
part cloud
part cloud
clear
clear
part cloud
cloud
cloud
cloud
cloud
cloud
light rain
cloud
clear
clear
clear
clear
part cloud
part cloud
part cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:30
6:28
6:28
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:34
6:35
6:36
 mm
4
1
Temp °C
13
13
13
14
13
14
12
10
10
9
8
8
8
9
9
9
9
8
6
7
11
14
14
12
Feels °C
13
9
9
7
3
3
1
-2
0
-1
-1
0
0
1
2
4
6
5
2
3
6
11
11
8
  • 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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