Maresias Surf Break

Maresias 48 hour detailed Surf Forecast

Lat Long: 23.81° S 45.54° W

Issued: 8 pm 17 Jun 2026 (local time)

Forecast update in  hr  min

Today's Maresias sea temperature is
22.0° C

Slightly warmer than usual

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 Jun):

  • Morning surf: Morning surf (18 Jun, local time) - 5ft (1.5m), 14s period with S swell.
  • Afternoon surf: Afternoon surf (18 Jun, local time) - 6ft (1.8m), 14s period with S swell.
  • Evening surf: Evening surf (18 Jun, local time) - 6ft (1.9m), 14s period with S swell.

The current surf forecast for Maresias at 4AM is: 0.8m 16s primary swell from a South direction and 1.0m 11s secondary swell from a South direction (forecast issued at 08:00pm June 17). The wind direction is predicted to be glassy and the swell rating is 3.

Time (-03) & DateWave HeightWave Period
Morning (18 Jun)5ft (1.5m)14s
Afternoon (18 Jun)6ft (1.8m)14s
Evening (18 Jun)6ft (1.9m)14s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 23°C on Fri morning, min 14°C on Thu night). Wind will be generally light.

Wed
17
Thursday
18
Friday
19
Saturday
20
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
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
Rating
(10 max)
2
3
2
3
3
3
3
3
4
4
4
4
4
4
4
3
4
3
3
2
3
0
0
0
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)
1.2
S
11
1.2
S
11
1.1
S
11
0.8
S
16
1
S
15
1.5
S
14
1.7
S
14
1.8
S
14
1.8
S
14
1.9
S
14
1.9
S
14
1.9
S
14
1.9
S
13
1.9
S
13
1.8
S
14
1.7
S
14
1.6
S
13
1.4
S
13
1.3
S
13
1.2
S
13
1.1
S
12
1
S
12
0.9
S
12
0.8
S
12
Wave Graph
Metric surfscale
Energy kJ
369
344
279
306
434
915
1127
1175
1158
1352
1313
1294
1266
1275
1190
1063
905
673
563
466
368
290
232
178
Wind (km/h)
5
SW
5
WNW
5
NW
0
ENE
5
ESE
5
ENE
5
SE
10
SE
10
ENE
10
NE
15
NNE
15
NNE
15
NNE
10
NNE
5
E
5
E
15
NE
15
NNE
5
NNW
5
NW
5
NW
10
SW
15
SW
5
SSW
Wind State
glassy
glassy
glassy
glassy
glassy
glassy
cross-on
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
cross
cross-off
cross-off
off
cross-off
cross-off
cross-on
cross-on
on
High Tide
4:46PM1.03m
3:54AM0.99m
5:22PM0.94m
4:33AM1.00m
5:58PM0.87m
5:17AM0.98m
Low Tide
11:20PM0.55m
11:22AM0.09m
11:53PM0.59m
12:11PM0.16m
00:29AM0.60m
1:02PM0.25m
clear
clear
clear
part cloud
part cloud
clear
clear
clear
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:43
6:43
6:43
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:22
5:22
5:22
 mm
Temp °C
17
16
15
17
18
19
21
21
17
16
15
14
15
19
23
23
19
19
20
20
19
22
21
20
Feels °C
19
17
16
19
18
19
20
20
17
15
14
12
13
18
22
23
18
17
20
20
19
22
20
22
Swell 1
Height (m)
Direction
Period (s)
1.2
S
11
1.2
S
11
1.1
S
11
1
S
11
1
S
15
1.5
S
14
1.7
S
14
1.8
S
14
1.8
S
14
1.9
S
14
1.9
S
14
1.9
S
14
1.9
S
13
1.9
S
13
1.8
S
14
1.7
S
14
1.6
S
13
1.4
S
13
1.3
S
13
1.2
S
13
1.1
S
12
1
ESE
7
1
E
7
0.9
ESE
7
Energy kJ
369
344
279
227
434
915
1127
1175
1158
1352
1313
1294
1266
1275
1190
1063
905
673
563
466
368
108
103
82
Swell 2
Height (m)
Direction
Period (s)
0.4
ESE
8
0.5
S
17
0.6
S
16
0.8
S
16
0.9
S
11
0.4
ESE
9
0.4
ESE
9
0.4
ESE
9
0.4
ESE
9
0.3
ESE
8
0.4
E
8
0.3
ESE
8
0.3
ESE
8
0.3
ESE
8
0.3
ESE
8
0.3
ESE
8
0.2
ESE
10
0.3
ESE
10
1.1
E
6
1
E
7
1
ESE
7
1
S
12
0.9
S
12
0.8
S
12
Energy kJ
24
149
195
306
181
28
26
26
25
14
22
14
14
14
14
14
10
20
104
92
102
290
232
178
Swell 3
Height (m)
Direction
Period (s)
0.4
SSE
18
0.4
ESE
8
0.4
ESE
8
0.4
ESE
10
0.4
ESE
9
0.4
E
8
0.1
E
8
0.3
ESE
10
0.3
ESE
10
0.4
ESE
10
0.2
E
9
0.2
E
9
0.2
E
9
Energy kJ
106
23
22
30
28
22
1
20
19
30
6
6
6
Wind waves
Height (m)
Direction
Period (s)
0.4
NE
3
0.6
ENE
4
0.9
ESE
6
0.9
ESE
6
1
E
6
1.2
E
6
1.2
E
6
1.4
E
7
0.3
WNW
3
0.4
WSW
3
0.4
SW
3
0.3
SW
3
Energy kJ
3
8
60
56
73
102
109
173
1
3
2
1
Nearest Offshore or Glassy
Rating
(10 max)
2
3
2
3
3
3
3
3
4
4
4
4
4
4
4
4
4
3
3
2
3
1
1
2
Distance (km)
0
0
0
0
0
0
8
19
0
0
0
0
0
0
0
4
0
0
0
0
0
32
62
25
Best forecast wave conditions in São Paulo
Rating
(10 max)
2
3
2
3
3
3
3
3
4
4
4
4
4
4
4
4
4
3
3
3
3
2
1
2
Best forecast wave conditions in Brazil
Rating
(10 max)
2
3
3
3
3
3
4
4
4
4
4
4
4
4
4
4
4
4
4
4
3
3
2
3
Header Global
Rating
(10 max)
5
5
5
9
9
9
5
5
5
5
6
6
6
4
8
4
4
6
4
4
4
5
5
9
  • 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
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