Surf Forecast Surf Report
Lopes Mendes (Ilha Grande) surf break

Lopes Mendes (Ilha Grande) surfForecast / Rio de Janeiro / Brazil

information circle12 Day Weather and Surf, issued 2 am Saturday 29 Mar 2025 -03
Forecast update in hr  min  s Forecast update imminent
Lopes Mendes (Ilha Grande) surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Lopes Mendes (Ilha Grande) sea temperature is
25.8° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Lopes Mendes (Ilha Grande) this week:

The surf forecast for Lopes Mendes (Ilha Grande) over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Mar 29) at 6AM. The primary swell is predicted to be 1.0m and 18s period with a secondary swell of 1.0m and 11s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Lopes Mendes (Ilha Grande) in the next 12 days are 2.4m 9s and forecast to arrive on Saturday (Apr 05) at 9AM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 7s period and expected on Thursday (Apr 03) at 12AM.

Wave TypeTime (-03) & Date Wave Height & Period
Next good surf (1 star+) 6AM (Sat 29th Mar)3.5ft (1.0m) 18s
Best Surf 6AM (Sat 29th Mar)3.5ft (1.0m) 18s
Most Powerful 9AM (Sat 5th Apr)8ft (2.4m) 9s

Table - best surf conditions forecast for Lopes Mendes (Ilha Grande) over the next 12 days.

Updates in  hr  min  s Forecast update imminent
Saturday
29
Sunday
30
Monday
31
Tuesday
01
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
Wave Height (m) & direction (?)
1.1
S
1.1
S
1
S
0.8
S
0.7
S
0.6
S
0.9
ESE
1
ESE
1
ESE
1.2
ESE
1.1
ESE
1.1
ESE
1
ESE
1
ESE
1.3
ESE
0.4
SSW
0.6
SW
0.7
S
0.7
S
0.6
S
1.4
S
2.4
S
2.4
S
2.3
S
2.2
S
1.3
SSW
1.5
S
1.8
SE
1.9
SE
2.3
SE
1.8
SE
1.8
SE
1.7
SE
1.6
SE
1.5
SE
0.9
SSE
Period(s) (?)171514131212888786667989913899121011139998888811
Wave
Graph
(?)Metric surfscale
Energy (?)667563363209148981051311371281468790821572754817812127084186114471055400736471502742423423401330291191
Wind
(km/h)
5
E
15
ESE
10
ENE
5
E
10
ESE
10
ENE
5
ENE
10
SE
5
NE
0
SE
15
S
10
WSW
10
E
15
ESE
10
NNE
5
N
15
S
10
WNW
5
W
20
SW
15
WSW
5
WSW
15
SSW
5
W
5
WSW
10
SE
5
ENE
0
NNW
10
SSE
5
NNW
5
W
5
SSW
5
E
5
NNE
15
SE
15
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
offglasscross-
off
offcross-
off
cross-
off
glassglasscross-
on
cross-
on
cross-
off
cross-
off
cross-
off
glasscross-
on
cross-
on
cross-
on
oncross-
on
ononcross-
on
glasscrossoffglasscrossglasscross-
on
onglassglasscross-
off
off
High Tide
/ height (m)
2:35PM
1.26
3:05AM
1.10
3:09PM
1.26
3:24AM
1.05
3:44PM
1.22
3:46AM
0.99
4:21PM
1.12
4:09AM
0.94
5:02PM
0.99
4:35AM
0.89
5:49PM
0.85
11:06PM
0.75
5:04AM
0.82
7:01PM 12:11AM
0.71 0.83
5:39AM 11:29AM
0.75 0.51
12:46AM
0.90
7:14AM 11:50AM
0.66 0.63
1:09AM
0.94
12:05PM
0.77
1:22AM
0.97
12:25PM
0.89
1:28AM
1.01
12:51PM
1.00
1:37AM
1.05
Low Tide
/ height (m)
9:12AM
0.16
9:37PM
-0.05
9:45AM
0.14
10:17PM
0.08
10:18AM
0.14
10:58PM
0.24
10:51AM
0.16
11:41PM
0.41
11:28AM
0.20
12:33AM
0.57
12:20PM
0.27
9:03PM 1:48AM
0.72 0.69
1:48PM
0.34
8:30PM
0.70
3:37AM 10:38AM
0.72 0.50
3:33PM
0.35
5:25AM 10:18AM
0.65 0.63
5:04PM
0.30
6:13AM
0.55
6:06PM
0.21
6:46AM
0.45
6:50PM
0.14
7:16AM
0.36
7:27PM
0.10
Saturday
29
Sunday
30
Monday
31
Tuesday
01
Wednesday
02
Thursday
03
Friday
04
Saturday
05
Sunday
06
Monday
07
Tuesday
08
Wednesday
09
Sunrise6:03--6:03--6:03--6:03--6:03--6:05--6:05--6:05--6:05--6:05--6:07--6:07--
Sunset-5:59--5:58--5:57--5:55--5:54--5:53--5:52--5:52--5:51--5:50--5:49--5:47-
clearclearclearpart cloudpart cloudclearclearclearclearclearclearclearclearclearclearclearthunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm thunderstorm clearclearthunderstorm clearrain showersrain showerspart cloudthunderstorm thunderstorm thunderstorm thunderstorm thunderstorm
Rain (mm)
----------------11236223--2-13-25159
Temp. °C252625252525262626262726262626272726262624242424242524242524242423242424
Feels °C (?)272828282728282930303030282830302930292726282727282726282727272727282624

Short Range Forecast: Mostly dry. Warm (max 26°C on Sat afternoon, min 24°C on Sat morning). Wind will be generally light.

Days 3-6 Weather Summary Light rain (total 2mm), mostly falling on Thu afternoon. Warm (max 27°C on Tue afternoon, min 24°C on Tue night). Wind will be generally light.

Days 6-9 Weather Summary Heavy rain (total 20mm), heaviest during Fri morning. Warm (max 26°C on Fri morning, min 23°C on Fri night). Wind will be generally light.

Long Range Forecast: Heavy rain (total 27mm), heaviest during Wed afternoon. Warm (max 25°C on Mon afternoon, min 23°C on Tue night). Wind will be generally light.

  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Lopes Mendes (Ilha Grande) Surf forecast

The above surf forecast table for Lopes Mendes (Ilha Grande) provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Lopes Mendes (Ilha Grande) can be found by selecting the local surf guide option on the grey menu. Our Lopes Mendes (Ilha Grande) surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Lopes Mendes (Ilha Grande)) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Lopes Mendes (Ilha Grande) may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

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