Maresias Surf Break

Lat Long: 23.81° S 45.54° W

Maresias 48 hour detailed Surf Forecast

Issued: 8 pm 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Maresias sea temperature is
21.2° C
1.0° 

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 (18 Aug):

  • Morning surf: Morning surf (18 Aug, local time) - 1.5ft (0.4m), 10s period with SSE swell.
  • Afternoon surf: Afternoon surf (18 Aug, local time) - 1ft (0.3m), 9s period with SSE swell.
  • Evening surf: Evening surf (18 Aug, local time) - 0.5ft (0.2m), 11s period with S swell.

The current surf forecast for Maresias at 4AM is: 0.4m 10s primary swell from a South-southeast direction (forecast issued at 08:00pm August 17). An open ocean swell of 1.6m 8s is not directed at the surf break, a second open ocean swell of 2.1m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (-03) & DateWave HeightWave Period
Morning (18 Aug)1.5ft (0.4m)10s
Afternoon (18 Aug)1ft (0.3m)9s
Evening (18 Aug)0.5ft (0.2m)11s

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


Short Range Forecast

Mostly dry. Warm (max 32°C on Wed morning, min 18°C on Wed night). Wind will be generally light.

Mon
17
Tuesday
18
Wednesday
19
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
1
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)
0.6
S
10
0.6
S
10
0.5
S
10
0.5
S
10
0.4
SSE
10
0.4
SSE
10
0.3
S
10
0.3
SSE
9
0.2
S
11
0.2
S
11
0.2
S
9
0.2
S
9
0.2
S
10
0.1
SE
14
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
SE
13
Wave Graph
Metric surfscale
Energy kJ
75
74
51
50
32
31
16
17
9
9
7
7
7
7
7
7
7
7
Wind (km/h)
10
NNE
10
NE
10
NNE
5
NNE
5
NNE
5
WNW
5
S
5
SE
5
NE
10
NNE
10
NNE
10
N
10
NNE
5
NNE
10
SSE
5
ESE
0
WNW
5
WNW
Wind State
cross-off
cross-off
cross-off
cross-off
off
glassy
glassy
cross-on
cross-off
cross-off
off
off
off
glassy
cross-on
glassy
glassy
cross-off
High Tide
4:51PM0.96m
5:11AM1.02m
5:13PM0.90m
5:49AM0.90m
5:37PM0.84m
Low Tide
11:00PM0.30m
11:31AM0.41m
11:27PM0.33m
11:47AM0.52m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:26
6:24
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:45
5:45
 mm
Temp °C
21
20
21
21
21
27
29
29
24
24
24
24
24
30
32
31
24
22
Feels °C
23
20
22
21
21
29
30
30
25
24
23
23
23
30
31
31
26
23
  • 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 Maresias 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.


Nearest locationNearest