Lopes Mendes (Ilha Grande) Surf Break

Lat Long: 23.18° S 44.12° W

Lopes Mendes (Ilha Grande) 48 hour detailed Surf Forecast

Issued: 2 pm 20 Aug 2026 (local time)

Forecast update in  hr  min

Today's Lopes Mendes (Ilha Grande) sea temperature is
22.6° C
1.6° 

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):

  • 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 6PM is: 0.3m 12s primary swell from a South direction (forecast issued at 02:00pm August 20). An open ocean swell of 0.6m 7s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (-03) & DateWave HeightWave Period
Morning (20 Aug)--
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 5mm), mostly falling on Sat morning. Warm (max 27°C on Fri morning, min 18°C on Sat night). Winds increasing (calm on Thu night, fresh winds from the SW by Fri afternoon).

Thu
20
Friday
21
Saturday
22
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)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
2
2
3
2
2
Wave
Height (m)
Direction
Period (s)
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
0.8
SW
9
1.6
SW
6
1.7
SW
6
1.7
SSW
7
1.6
SSW
7
1.5
SSW
7
1.6
SSW
8
1.8
S
9
1.9
S
9
1.9
SSW
11
1.8
SSW
10
1.7
SSW
10
Wave Graph
Metric surfscale
Energy kJ
6
11
24
24
38
34
32
45
99
157
230
262
258
231
273
506
627
831
735
610
Wind (km/h)
10
SE
10
SSE
5
NE
5
N
10
NNE
15
N
10
NNW
5
W
30
SW
35
SW
30
SW
25
SW
20
SW
15
SW
15
SSW
5
SSW
5
S
5
S
5
SSE
10
SE
Wind State
cross
cross
off
glassy
off
cross-off
cross-off
glassy
on
on
on
on
on
on
on
cross-on
cross-on
glassy
cross
cross
High Tide
6:25PM0.74m
12:18PM0.75m
7:38PM0.66m
12:49PM0.85m
Low Tide
2:30PM0.62m
2:58AM0.42m
4:47PM0.63m
4:46AM0.39m
6:21PM0.55m
clear
clear
clear
clear
clear
clear
clear
clear
cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
cloud
part cloud
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:42
5:42
5:42
 mm
1
1
Temp °C
22
22
22
22
23
24
24
27
22
20
20
20
19
19
19
19
19
19
19
18
Feels °C
23
23
23
24
22
22
22
26
20
16
16
17
17
17
18
19
19
19
19
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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