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 17 Sep 2026 (local time)

Forecast update in  hr  min

Today's Lopes Mendes (Ilha Grande) sea temperature is
22.2°C
1.0° 

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 (17 Sep):

  • Afternoon surf: Afternoon surf (17 Sep, local time) - 5ft (1.6m), 12s period with S swell.
  • Evening surf: Evening surf (17 Sep, local time) - 4.5ft (1.4m), 10s period with S swell.

The current surf forecast for Lopes Mendes (Ilha Grande) at 7PM is: 1.5m 11s primary swell from a South direction and 0.5m 9s secondary swell from a East-southeast direction (forecast issued at 02:00pm September 17). An open ocean swell of 0.9m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (-03) & DateWave HeightWave Period
Morning (17 Sep)--
Afternoon (17 Sep)5ft (1.6m)12s
Evening (17 Sep)4.5ft (1.4m)10s

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


Short Range Forecast

Mostly dry. Warm (max 23°C on Sun morning, min 18°C on Thu afternoon). Winds decreasing (fresh winds from the E on Fri afternoon, light winds from the NNW by Sat night).

Thu
17
Friday
18
Saturday
19
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
2
1
1
2
2
1
1
1
1
1
1
0
0
1
1
0
0
0
0
Wave
Height (m)
Direction
Period (s)
1.4
S
10
1.6
S
12
1.6
S
11
1.4
S
10
1.2
S
10
1.3
S
10
0.9
S
11
0.8
S
11
1.1
S
11
1.1
S
11
1.1
S
10
2
ESE
6
1
S
10
0.9
S
10
0.9
S
10
0.8
S
10
1.6
ESE
7
0.7
S
9
0.6
S
9
0.6
S
9
Wave Graph
Metric surfscale
Energy kJ
354
678
599
394
279
333
189
152
284
274
264
310
198
156
156
121
206
85
61
60
Wind (km/h)
20
E
20
E
25
E
25
E
20
ENE
20
ENE
15
ENE
20
ENE
20
E
25
E
30
E
30
ENE
25
ENE
20
ENE
20
ENE
25
ENE
25
E
30
E
30
E
20
ENE
Wind State
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
cross-off
cross-off
cross-off
High Tide
5:05PM0.84m
6:19AM0.77m
11:30AM0.67m
5:35PM0.76m
12:03PM0.77m
6:33PM0.66m
Low Tide
12:01PM0.57m
00:20AM0.36m
10:03AM0.67m
1:55PM0.65m
2:20AM0.42m
4:17PM0.64m
cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:50
5:51
5:51
 mm
Temp °C
19
19
18
18
18
18
18
19
20
20
20
20
20
19
19
20
22
22
22
21
Feels °C
17
17
15
15
15
16
17
18
18
18
17
17
18
17
17
18
19
19
19
20
  • 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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