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 am 11 Sep 2026 (local time)

Forecast update in  hr  min

Today's Lopes Mendes (Ilha Grande) sea temperature is
22.4°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 (11 Sep):

  • Morning surf: Morning surf (11 Sep, local time) - 4ft (1.2m), 14s period with S swell.
  • Afternoon surf: Afternoon surf (11 Sep, local time) - 3.5ft (1.1m), 13s period with S swell.
  • Evening surf: Evening surf (11 Sep, local time) - 3.5ft (1.0m), 12s period with S swell.

The current surf forecast for Lopes Mendes (Ilha Grande) at 3PM is: 1.1m 13s primary swell from a South direction and 0.2m 12s secondary swell from a East-southeast direction (forecast issued at 08:00am September 11). An open ocean swell of 0.6m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (-03) & DateWave HeightWave Period
Morning (11 Sep)4ft (1.2m)14s
Afternoon (11 Sep)3.5ft (1.1m)13s
Evening (11 Sep)3.5ft (1.0m)12s

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


Short Range Forecast

Heavy rain (total 31mm), heaviest during Sun night. Warm (max 26°C on Fri night, min 19°C on Sun morning). Wind will be generally light.

Friday
11
Saturday
12
Sunday
13
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
6 PM
9 PM
Rating
(10 max)
0
3
3
2
2
2
2
1
0
1
1
0
0
0
1
0
0
0
2
1
0
1
Wave
Height (m)
Direction
Period (s)
1.2
S
14
1.2
S
14
1.2
S
13
1.1
S
13
1
S
13
1
S
12
0.9
S
12
0.8
S
12
0.8
S
12
0.7
S
12
0.7
S
11
0.6
S
11
0.6
S
11
0.5
S
11
0.5
S
11
0.8
S
5
0.9
SSW
6
1.1
SSW
7
1.4
S
8
1.6
S
8
1.6
S
8
1.6
S
9
Wave Graph
Metric surfscale
Energy kJ
594
546
503
411
319
295
232
180
174
132
121
85
85
58
57
35
56
132
251
329
360
390
Wind (km/h)
20
WSW
5
NNW
10
E
15
SE
10
E
10
ENE
10
NNE
15
NNE
25
SW
5
N
10
E
15
S
20
SSW
15
SSW
5
SE
10
SSE
10
SE
10
SE
15
ESE
20
ESE
25
ESE
25
E
Wind State
on
glassy
cross-off
cross-off
cross-off
cross-off
off
cross-off
on
cross-off
cross-off
cross-on
on
cross-on
glassy
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
High Tide
2:47PM1.11m
2:35AM1.23m
3:05PM1.09m
3:08AM1.22m
3:27PM1.07m
Low Tide
9:07AM-0.05m
9:18PM0.22m
9:40AM0.02m
9:45PM0.20m
10:10AM0.12m
cloud
part cloud
clear
clear
clear
clear
clear
part cloud
light rain
part cloud
clear
part cloud
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:56
5:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:49
5:49
5:49
 mm
1
1
2
1
1
1
1
1
3
4
4
Temp °C
22
21
24
24
24
24
24
26
22
23
24
23
21
20
20
20
20
19
20
19
19
19
Feels °C
23
24
26
26
27
26
27
27
22
26
26
24
21
20
22
21
21
20
20
18
17
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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