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 13 Sep 2026 (local time)

Forecast update in  hr  min

Today's Lopes Mendes (Ilha Grande) sea temperature is
22.7°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 (13 Sep):

  • Morning surf: Morning surf (13 Sep, local time) - 3ft (0.9m), 6s period with SSW swell.
  • Afternoon surf: Afternoon surf (13 Sep, local time) - 4ft (1.2m), 8s period with SSW swell.
  • Evening surf: Evening surf (13 Sep, local time) - 3.5ft (1.1m), 8s period with SSW swell.

The current surf forecast for Lopes Mendes (Ilha Grande) at 8AM is: 0.9m 6s primary swell from a South-southwest direction and 0.4m 10s secondary swell from a South-southwest direction (forecast issued at 02:00am September 13). The wind direction is predicted to be glassy.

Time (-03) & DateWave HeightWave Period
Morning (13 Sep)3ft (0.9m)6s
Afternoon (13 Sep)4ft (1.2m)8s
Evening (13 Sep)3.5ft (1.1m)8s

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


Short Range Forecast

Heavy rain (total 31mm), heaviest during Tue night. Warm (max 20°C on Sun morning, min 18°C on Tue night). Wind will be generally light.

Sunday
13
Monday
14
Tuesday
15
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)
0
0
0
1
0
0
2
1
1
2
2
1
1
2
2
0
2
2
0
0
0
0
0
0
Wave
Height (m)
Direction
Period (s)
1.1
SW
5
1
SW
5
0.8
SW
5
0.9
SSW
6
1
SSW
7
1.2
SSW
8
1.3
S
8
1.1
SSW
8
1.5
SSE
8
1.4
SSE
8
1.1
S
7
0.9
S
8
1
S
8
0.9
SSE
9
0.8
SSE
9
0.7
S
12
0.7
S
12
0.9
SSW
11
0.9
SSW
11
1
SSW
11
0.8
SSW
10
1.1
SSW
10
1.1
SSW
9
0.8
S
9
Wave Graph
Metric surfscale
Energy kJ
57
46
31
47
99
187
219
163
246
204
130
102
119
135
103
138
132
198
194
240
128
250
225
106
Wind (km/h)
25
SW
20
SW
10
SW
5
SW
5
SSW
10
SE
15
ESE
20
E
20
E
15
ENE
15
NE
10
ENE
5
SE
5
NNW
5
ENE
15
SW
15
N
5
NE
20
SW
20
SSW
20
SSW
20
SW
15
SW
10
SSW
Wind State
on
on
on
glassy
cross-on
cross
cross-off
cross-off
cross-off
cross-off
off
off
glassy
glassy
glassy
on
cross-off
off
on
on
on
on
on
on
High Tide
3:08AM1.22m
3:27PM1.07m
3:41AM1.18m
3:50PM1.04m
4:14AM1.10m
4:14PM0.99m
Low Tide
10:10AM0.12m
10:10PM0.19m
10:38AM0.23m
10:33PM0.20m
11:03AM0.35m
light rain
light rain
light rain
cloud
cloud
cloud
light rain
light rain
light rain
cloud
cloud
light rain
light rain
light rain
rain showers
light rain
light rain
part cloud
part cloud
cloud
part cloud
light rain
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:54
5:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:49
5:50
5:50
 mm
1
1
1
1
1
1
3
1
2
1
3
3
1
2
3
Temp °C
20
20
20
20
20
20
20
19
19
19
19
19
19
19
20
19
20
20
19
19
19
19
19
18
Feels °C
19
19
21
22
22
21
20
18
18
19
19
20
21
21
23
19
21
22
18
18
18
17
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
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