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 16 Sep 2026 (local time)

Forecast update in  hr  min

Today's Lopes Mendes (Ilha Grande) sea temperature is
22.6°C
1.4° 

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 (16 Sep):

  • Morning surf: Morning surf (16 Sep, local time) - 2.5ft (0.8m), 10s period with S swell.
  • Afternoon surf: Afternoon surf (16 Sep, local time) - 3.5ft (1.0m), 10s period with S swell.
  • Evening surf: Evening surf (16 Sep, local time) - 3.5ft (1.0m), 12s period with S swell.

The current surf forecast for Lopes Mendes (Ilha Grande) at 1PM is: 0.7m 13s primary swell from a South direction and 0.7m 5s secondary swell from a South-southwest direction (forecast issued at 08:00am September 16). The wind direction is predicted to be cross-onshore.

Time (-03) & DateWave HeightWave Period
Morning (16 Sep)2.5ft (0.8m)10s
Afternoon (16 Sep)3.5ft (1.0m)10s
Evening (16 Sep)3.5ft (1.0m)12s

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


Short Range Forecast

Light rain (total 4mm), mostly falling on Wed morning. Warm (max 20°C on Wed morning, min 18°C on Wed night). Winds increasing (light winds from the SE on Wed night, fresh winds from the E by Fri afternoon).

Wednesday
16
Thursday
17
Friday
18
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
0
1
1
3
2
2
1
2
2
2
3
2
2
2
2
1
0
0
0
Wave
Height (m)
Direction
Period (s)
1.2
S
9
0.8
S
10
0.7
S
13
1
S
10
1.4
S
12
1
S
12
1.6
S
11
1.6
S
9
1.5
S
9
1.4
S
9
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
0.9
S
11
1.1
S
11
1.1
S
11
1.1
S
10
1.8
ESE
6
Wave Graph
Metric surfscale
Energy kJ
230
128
161
190
544
268
599
398
334
311
356
678
588
394
273
333
189
189
284
274
264
244
Wind (km/h)
20
SW
15
SSW
10
SSW
15
S
15
SSE
15
SSE
10
SE
10
E
15
E
15
ENE
20
E
20
E
25
E
20
ENE
15
NE
15
ENE
15
ENE
15
ENE
20
E
25
E
30
E
30
ENE
Wind State
on
on
cross-on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
High Tide
4:50AM1.00m
4:39PM0.92m
5:29AM0.89m
5:05PM0.84m
6:19AM0.77m
11:30AM0.67m
5:35PM0.76m
Low Tide
11:27AM0.47m
11:24PM0.29m
12:01PM0.57m
00:20AM0.36m
10:03AM0.67m
1:55PM0.65m
light rain
light rain
light rain
light rain
light rain
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:52
5:50
5:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:50
5:50
5:51
 mm
1
1
1
1
1
Temp °C
19
20
19
19
19
19
18
18
18
18
19
19
18
18
18
18
18
19
20
20
20
20
Feels °C
17
19
18
18
18
18
17
17
17
16
17
17
15
15
16
16
17
18
18
17
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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