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 14 Sep 2026 (local time)

Forecast update in  hr  min

Today's Lopes Mendes (Ilha Grande) sea temperature is
22.7°C
1.5° 

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 (14 Sep):

  • Morning surf: Morning surf (14 Sep, local time) - 3.5ft (1.1m), 8s period with S swell.
  • Afternoon surf: Afternoon surf (14 Sep, local time) - 3ft (0.9m), 9s period with SSE swell.
  • Evening surf: Evening surf (14 Sep, local time) - 2.5ft (0.7m), 12s period with S swell.

The current surf forecast for Lopes Mendes (Ilha Grande) at 5PM is: 1.1m 9s primary swell from a South-southeast direction and 0.6m 12s secondary swell from a South direction (forecast issued at 08:00am September 14). An open ocean swell of 0.5m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.

Time (-03) & DateWave HeightWave Period
Morning (14 Sep)3.5ft (1.1m)8s
Afternoon (14 Sep)3ft (0.9m)9s
Evening (14 Sep)2.5ft (0.7m)12s

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


Short Range Forecast

Heavy rain (total 32mm), heaviest during Tue night. Warm (max 20°C on Mon night, min 18°C on Tue night). Wind will be generally light.

Monday
14
Tuesday
15
Wednesday
16
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)
1
2
2
2
2
1
1
2
0
0
0
0
0
1
0
0
0
0
1
1
1
1
Wave
Height (m)
Direction
Period (s)
1.1
S
8
1.1
S
8
1
SSE
8
0.9
SSE
9
1.1
SSE
9
0.7
S
12
0.7
S
12
0.9
SSW
11
1
S
11
1
S
11
1.1
SSW
10
1.3
SSW
10
1
S
9
1.2
S
9
1.2
S
9
1
S
9
1.2
S
8
1.1
S
10
0.7
S
13
0.9
S
10
1.1
S
12
1
S
12
Wave Graph
Metric surfscale
Energy kJ
161
161
147
135
186
138
132
198
231
229
218
295
175
246
225
146
204
228
161
158
336
268
Wind (km/h)
5
ENE
10
ENE
15
ENE
15
ENE
10
ENE
5
SW
10
W
15
NE
15
S
15
SSW
20
SW
20
SW
15
SW
10
SSW
15
SSW
15
SSW
15
SW
10
WSW
10
WSW
10
SSW
10
S
10
SE
Wind State
cross-off
off
off
cross-off
off
on
cross-on
off
cross-on
on
on
on
on
cross-on
on
on
on
on
on
on
cross-on
cross
High Tide
3:41AM1.18m
3:50PM1.04m
4:14AM1.10m
4:14PM0.99m
4:50AM1.00m
4:39PM0.92m
Low Tide
10:38AM0.23m
10:33PM0.20m
11:03AM0.35m
10:56PM0.24m
11:27AM0.47m
cloud
cloud
light rain
light rain
light rain
light rain
light rain
rain showers
part cloud
cloud
cloud
light rain
light rain
light rain
light rain
rain showers
light rain
light rain
light rain
light rain
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:54
5:52
5:52
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:50
5:50
5:50
 mm
1
1
3
4
3
1
1
1
1
2
5
1
1
1
1
1
1
Temp °C
19
19
19
19
19
19
19
20
20
19
19
19
19
18
18
18
18
19
19
19
19
19
Feels °C
20
19
19
19
20
21
20
21
20
18
17
17
18
18
18
17
18
19
19
19
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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