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 18 Oct 2026 (local time)

Forecast update in  hr  min

Today's Lopes Mendes (Ilha Grande) sea temperature is
24.5°C
2.4° 

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 (18 Oct):

  • Morning surf: Morning surf (18 Oct, local time) - 3ft (0.9m), 9s period with ESE swell.
  • Afternoon surf: Afternoon surf (18 Oct, local time) - 5ft (1.5m), 12s period with SSW swell.
  • Evening surf: Evening surf (18 Oct, local time) - 6ft (1.9m), 11s period with SSW swell.

The current surf forecast for Lopes Mendes (Ilha Grande) at 3PM is: 1.5m 12s primary swell from a South-southwest direction and 1.0m 10s secondary swell from a Southeast direction (forecast issued at 08:00am October 18). The wind direction is predicted to be cross-onshore.

Time (-03) & DateWave HeightWave Period
Morning (18 Oct)3ft (0.9m)9s
Afternoon (18 Oct)5ft (1.5m)12s
Evening (18 Oct)6ft (1.9m)11s

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


Short Range Forecast

Moderate rain (total 15mm), heaviest on Sun night. Warm (max 22°C on Sun morning, min 18°C on Mon night). Wind will be generally light.

Sunday
18
Monday
19
Tuesday
20
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
2
0
1
2
2
2
3
3
0
0
2
2
3
3
3
3
3
3
3
3
3
Wave
Height (m)
Direction
Period (s)
1
SE
9
0.9
ESE
9
1.1
SE
10
1.5
SSW
12
1.7
SSW
12
1.9
SSW
11
2
S
12
2
S
12
1.9
SSW
12
1.9
SSW
11
1.9
SSW
11
1.8
SSW
11
1.8
S
11
1.7
S
10
1.7
S
10
1.6
S
10
1.6
S
10
1.6
S
10
1.6
S
10
1.6
S
10
1.6
S
11
1.5
S
10
Wave Graph
Metric surfscale
Energy kJ
152
132
270
599
833
927
1214
1155
995
894
878
778
748
632
596
500
500
494
514
553
564
489
Wind (km/h)
10
NE
5
ESE
10
SSE
15
S
15
S
15
S
10
SSE
10
SSE
10
S
15
SSW
15
SSW
5
S
5
SSW
5
SSW
0
ENE
5
NNE
5
NE
5
ENE
5
NE
5
ESE
10
E
10
ENE
Wind State
off
cross-off
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
glassy
glassy
cross-off
glassy
glassy
glassy
cross-off
cross-off
cross-off
High Tide
11:08AM0.77m
6:30PM0.71m
11:41AM0.85m
10:49PM0.74m
12:08PM0.94m
Low Tide
3:12PM0.63m
3:25AM0.37m
4:34PM0.56m
4:39AM0.29m
5:28PM0.47m
clear
rain showers
clear
rain showers
light rain
light rain
light rain
light rain
light rain
light rain
light rain
cloud
cloud
cloud
light rain
part cloud
cloud
cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:20
—
—
—
—
—
—
5:20
—
—
—
—
—
—
—
5:20
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
6:01
—
—
—
—
—
—
—
6:01
—
—
—
—
—
—
—
6:01
—
 mm
—
1
—
1
1
2
2
2
2
2
1
—
—
—
1
—
—
—
—
—
—
—
Temp °C
21
21
22
22
21
20
20
19
20
19
19
19
20
19
18
19
19
18
19
19
20
20
Feels °C
22
23
23
22
21
20
21
19
21
18
18
19
20
20
19
20
20
19
21
20
20
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
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