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 19 Aug 2026 (local time)

Forecast update in  hr  min

Today's Lopes Mendes (Ilha Grande) sea temperature is
22.3° C
1.3° 

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 (20 Aug):

  • Morning surf: Morning surf (20 Aug, local time) - 0.5ft (0.1m), 12s period with SE swell.
  • Afternoon surf: Afternoon surf (20 Aug, local time) - 0.5ft (0.2m), 12s period with S swell.
  • Evening surf: Evening surf (20 Aug, local time) - 1ft (0.3m), 11s period with SSW swell.

The current surf forecast for Lopes Mendes (Ilha Grande) at 5AM is: 0.1m 12s primary swell from a Southeast direction (forecast issued at 08:00pm August 19). An open ocean swell of 0.6m 7s is not directed at the surf break. The wind direction is predicted to be glassy.

Time (-03) & DateWave HeightWave Period
Morning (20 Aug)0.5ft (0.1m)12s
Afternoon (20 Aug)0.5ft (0.2m)12s
Evening (20 Aug)1ft (0.3m)11s

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


Short Range Forecast

Light rain (total 3mm), mostly falling on Fri night. Warm (max 25°C on Thu night, min 19°C on Fri night). Winds increasing (calm on Wed night, fresh winds from the SW by Fri morning).

Wed
19
Thursday
20
Friday
21
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)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Wave
Height (m)
Direction
Period (s)
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
SE
13
0.1
SE
12
0.1
SE
12
0.1
SE
12
0.2
S
12
0.3
S
12
0.3
SSW
11
0.4
SSW
11
0.4
SSW
10
0.4
SSW
10
0.5
S
9
1.1
SW
4
1.6
SW
6
1.7
SSW
7
1.7
SSW
7
Wave Graph
Metric surfscale
Energy kJ
7
7
7
6
6
6
6
11
24
24
38
34
32
45
37
165
262
271
Wind (km/h)
10
NNE
0
N
5
NW
5
WNW
5
WNW
5
SW
10
S
10
SSE
10
NE
5
N
10
NNE
15
NNE
10
NNW
10
SW
30
SW
30
SW
30
SW
20
SW
Wind State
cross-off
glassy
glassy
cross-on
glassy
on
cross-on
cross-on
off
glassy
off
cross-off
cross-off
on
on
on
on
on
High Tide
5:51PM0.83m
6:56AM0.77m
6:25PM0.74m
12:18PM0.75m
7:38PM0.66m
Low Tide
1:18AM0.40m
2:30PM0.62m
2:58AM0.42m
4:47PM0.63m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:42
5:42
 mm
Temp °C
24
24
23
23
22
22
22
21
22
22
23
24
25
25
22
20
20
20
Feels °C
24
26
24
24
23
23
23
22
24
23
23
22
23
24
20
17
16
17
  • 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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