Maresias Surf Break

Lat Long: 23.81° S 45.54° W

Maresias 48 hour detailed Surf Forecast

Issued: 8 am 21 Aug 2026 (local time)

Forecast update in  hr  min

Today's Maresias sea temperature is
22.3° C
2.2° 

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


How big are the waves at Maresias today (21 Aug):

  • Morning surf: Morning surf (21 Aug, local time) - 1.5ft (0.5m), 9s period with S swell.
  • Afternoon surf: Afternoon surf (21 Aug, local time) - 5ft (1.5m), 6s period with SSW swell.
  • Evening surf: Evening surf (21 Aug, local time) - 5ft (1.6m), 8s period with SSW swell.

The current surf forecast for Maresias at 11AM is: 1.3m 5s primary swell from a South-southwest direction and 0.1m 15s secondary swell from a South direction (forecast issued at 08:00am August 21). An open ocean swell of 0.9m 7s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (-03) & DateWave HeightWave Period
Morning (21 Aug)1.5ft (0.5m)9s
Afternoon (21 Aug)5ft (1.5m)6s
Evening (21 Aug)5ft (1.6m)8s

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


Short Range Forecast

Light rain (total 8mm), mostly falling on Sun night. Warm (max 26°C on Fri morning, min 17°C on Fri night). Wind will be generally light.

Friday
21
Saturday
22
Sunday
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
Rating
(10 max)
1
0
0
0
0
1
2
2
3
3
2
2
2
2
3
2
2
2
1
2
1
1
Swell
Height Map
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
9
0.5
S
9
1.3
SSW
5
1.5
SSW
6
1.7
SSW
7
1.6
SSW
8
1.5
SSW
7
1.3
S
8
1.8
S
10
1.8
S
11
1.8
S
10
1.7
S
10
1.7
S
10
1.7
S
10
1.6
S
10
1.6
S
10
1.6
S
10
1.5
S
10
1.6
S
10
1.6
S
10
1.5
S
11
1.7
S
13
Wave Graph
Metric surfscale
Energy kJ
43
40
69
160
270
276
222
217
676
716
696
586
586
592
514
492
482
426
492
543
546
941
Wind (km/h)
10
N
10
WSW
20
SW
20
SW
15
SW
5
SW
5
SW
5
SSW
5
S
5
SSE
10
S
10
S
10
SSE
10
ESE
10
ENE
10
ENE
10
NE
5
NE
10
SSE
10
SSE
10
SSE
15
SE
Wind State
off
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
glassy
glassy
glassy
on
on
cross-on
cross-on
cross-off
cross-off
cross-off
glassy
on
cross-on
cross-on
cross-on
High Tide
12:42PM0.74m
6:53PM0.67m
1:01PM0.85m
00:16AM0.69m
1:23PM0.94m
Low Tide
4:39PM0.65m
4:37AM0.40m
6:14PM0.57m
5:53AM0.31m
6:52PM0.48m
part cloud
cloud
cloud
part cloud
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
cloud
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:22
6:22
6:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:46
5:46
5:47
 mm
1
2
Temp °C
26
26
20
19
19
18
18
18
17
19
20
19
18
17
17
17
17
19
22
20
19
18
Feels °C
24
26
19
17
18
18
19
19
17
19
19
19
18
17
17
17
18
20
22
21
20
18
  • 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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