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 am 12 Sep 2026 (local time)

Forecast update in  hr  min

Today's Lopes Mendes (Ilha Grande) sea temperature is
22.5°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 (12 Sep):

  • Morning surf: Morning surf (12 Sep, local time) - 2.5ft (0.7m), 12s period with S swell.
  • Afternoon surf: Afternoon surf (12 Sep, local time) - 2ft (0.6m), 11s period with S swell.
  • Evening surf: Evening surf (12 Sep, local time) - 1.5ft (0.5m), 11s period with S swell.

The current surf forecast for Lopes Mendes (Ilha Grande) at 9AM is: 0.7m 12s primary swell from a South direction and 1.1m 5s secondary swell from a Southwest direction, 0.7m 5s secondary swell from a West direction (forecast issued at 02:00am September 12). The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (-03) & DateWave HeightWave Period
Morning (12 Sep)2.5ft (0.7m)12s
Afternoon (12 Sep)2ft (0.6m)11s
Evening (12 Sep)1.5ft (0.5m)11s

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


Short Range Forecast

Heavy rain (total 39mm), heaviest during Mon night. Warm (max 26°C on Sat morning, min 19°C on Sun afternoon). Wind will be generally light.

Saturday
12
Sunday
13
Monday
14
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
6 PM
9 PM
Rating
(10 max)
2
0
0
2
1
0
0
0
0
0
0
1
1
1
1
2
1
2
2
2
2
1
0
0
Wave
Height (m)
Direction
Period (s)
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
0.4
SSW
10
0.4
S
10
1.2
S
6
1.2
S
7
1.5
S
7
1.5
S
8
1.4
S
8
1.4
S
8
1.3
SSE
8
1.3
SSE
8
1.1
S
9
1.2
S
9
1.3
S
8
1.3
SSE
8
1.4
SSE
8
Wave Graph
Metric surfscale
Energy kJ
232
180
174
132
119
85
85
58
57
35
31
112
131
217
284
241
227
202
207
177
210
239
235
264
Wind (km/h)
5
NNW
20
WSW
25
WSW
5
N
10
NE
5
SW
10
SSW
10
S
15
SSE
15
S
15
S
10
SE
15
ESE
15
ESE
20
ESE
15
E
20
E
10
E
5
NNE
10
ENE
5
SE
5
SSE
20
SW
25
SW
Wind State
cross-off
on
cross-on
cross-off
off
on
cross-on
cross-on
cross
cross-on
cross-on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
glassy
cross
on
on
High Tide
3:05PM1.09m
3:08AM1.22m
3:27PM1.07m
3:41AM1.18m
3:50PM1.04m
Low Tide
9:40AM0.02m
9:45PM0.20m
10:10AM0.12m
10:10PM0.19m
10:38AM0.23m
clear
clear
rain showers
part cloud
clear
cloud
light rain
light rain
light rain
light rain
light rain
light rain
cloud
light rain
light rain
light rain
light rain
light rain
light rain
cloud
part cloud
cloud
light rain
mod rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:54
5:54
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:49
5:49
5:50
 mm
2
1
1
1
1
2
1
1
1
3
3
2
1
1
6
Temp °C
27
25
22
24
26
25
23
21
20
20
20
20
20
20
19
19
19
19
20
20
20
21
20
20
Feels °C
30
26
21
26
27
27
25
23
20
21
20
21
20
20
18
19
17
20
22
21
22
23
19
19
  • 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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