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 pm 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 (17 Sep):

  • Morning surf: Morning surf (17 Sep, local time) - 4.5ft (1.4m), 9s period with S swell.
  • Afternoon surf: Afternoon surf (17 Sep, local time) - 5.5ft (1.7m), 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 5AM is: 1.6m 9s primary swell from a South direction and 0.5m 10s secondary swell from a East-southeast direction (forecast issued at 08:00pm September 16). The wind direction is predicted to be cross-offshore and the swell rating is 3.

Time (-03) & DateWave HeightWave Period
Morning (17 Sep)4.5ft (1.4m)9s
Afternoon (17 Sep)5.5ft (1.7m)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

Light rain (total 2mm), mostly falling on Wed night. Warm (max 22°C on Sat morning, min 18°C on Wed night). Winds increasing (light winds from the ESE on Wed night, fresh winds from the E by Sat afternoon).

Wed
16
Thursday
17
Friday
18
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
1
2
2
3
2
2
2
2
2
2
2
2
1
1
0
1
1
Wave
Height (m)
Direction
Period (s)
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
1.7
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
1.2
S
11
1.1
S
11
2
ESE
6
2
ESE
7
Wave Graph
Metric surfscale
Energy kJ
544
268
599
398
342
311
354
765
599
394
273
333
189
152
332
274
340
340
Wind (km/h)
15
SSE
15
SSE
10
SE
10
ESE
10
ENE
15
ENE
15
E
20
E
25
E
25
ENE
20
ENE
15
ENE
15
ENE
15
ENE
20
E
25
E
30
E
30
E
Wind State
cross-on
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
4:39PM0.92m
5:29AM0.89m
5:05PM0.84m
6:19AM0.77m
11:30AM0.67m
5:35PM0.76m
Low Tide
11:24PM0.29m
12:01PM0.57m
00:20AM0.36m
10:03AM0.67m
1:55PM0.65m
light rain
light rain
light rain
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:50
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:50
5:51
 mm
1
1
1
Temp °C
19
19
19
18
18
18
19
19
18
18
18
18
18
19
20
20
20
20
Feels °C
18
18
18
18
17
16
18
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
How to use the Wavefinder 

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