Lopes Mendes (Ilha Grande) Surf Break

Lat Long: 23.18° S 44.12° W

Lopes Mendes (Ilha Grande) 48 hour detailed Surf Forecast

Issued: 8 pm 11 Aug 2026 (local time)

Forecast update in  hr  min

Today's Lopes Mendes (Ilha Grande) sea temperature is
22.9° C
1.9° 

Lopes Mendes (Ilha Grande) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Lopes Mendes (Ilha Grande) today (12 Aug):

  • Morning surf: Morning surf (12 Aug, local time) - 7ft (2.1m), 12s period with S swell.
  • Afternoon surf: Afternoon surf (12 Aug, local time) - 7ft (2.1m), 12s period with S swell.
  • Evening surf: Evening surf (12 Aug, local time) - 6ft (1.9m), 12s period with S swell.

The current surf forecast for Lopes Mendes (Ilha Grande) at 3AM is: 2.1m 12s primary swell from a South direction (forecast issued at 08:00pm August 11). An open ocean swell of 0.1m 7s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 4.

Time (-03) & DateWave HeightWave Period
Morning (12 Aug)7ft (2.1m)12s
Afternoon (12 Aug)7ft (2.1m)12s
Evening (12 Aug)6ft (1.9m)12s

Table - waves today at Lopes Mendes (Ilha Grande). (Swell directed towards the surf break)


Short Range Forecast

Mostly dry. Warm (max 25°C on Thu morning, min 18°C on Tue night). Wind will be generally light.

Tue
11
Wednesday
12
Thursday
13
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)
4
3
4
4
4
4
3
3
3
4
4
4
4
4
4
2
4
1
Wave
Height (m)
Direction
Period (s)
2.5
S
13
2.4
S
12
2.2
S
12
2.1
S
12
2
S
12
2.1
S
12
2.1
S
12
2.1
S
12
1.9
S
12
1.9
S
12
1.9
S
12
1.9
S
12
1.9
S
12
1.9
S
12
1.9
S
13
2
S
14
2.1
S
14
2.1
S
14
Wave Graph
Metric surfscale
Energy kJ
1977
1737
1415
1269
1129
1245
1269
1277
1036
1036
1036
1056
1074
1109
1181
1608
1797
1748
Wind (km/h)
15
E
15
E
15
ENE
15
ENE
10
NE
15
ENE
20
ENE
25
E
20
ENE
15
ENE
15
NE
10
NNE
5
NW
0
N
10
E
15
SE
5
NNW
20
WSW
Wind State
cross-off
cross-off
cross-off
off
off
off
cross-off
cross-off
cross-off
off
off
cross-off
glassy
glassy
cross-off
cross
glassy
on
High Tide
1:50AM1.03m
3:12PM1.13m
2:21AM1.12m
3:27PM1.10m
Low Tide
8:50PM0.33m
8:55AM-0.11m
9:23PM0.32m
9:34AM-0.11m
light rain
cloud
cloud
part cloud
part cloud
part cloud
part cloud
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:24
6:22
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:38
5:38
 mm
1
Temp °C
19
19
19
19
18
19
20
20
20
20
20
20
20
22
25
24
22
21
Feels °C
18
18
18
19
18
18
18
17
18
19
19
21
22
24
26
24
25
21
  • 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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