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Lopes Mendes (Ilha Grande) Surf Forecast
/ Rio de Janeiro (47 surf breaks) /
Surf Forecasts:
Lopes Mendes (Ilha Grande) surfForecast / Rio de Janeiro / Brazil
48hr Weather and Surf, issued 8 pm Thursday 16 Oct 2025 -03
How big are the waves at Lopes Mendes (Ilha Grande) today?
The current surf forecast for Lopes Mendes (Ilha Grande) at 3AM is: 0.6m 9s primary swell from a South-southwest direction and 0.6m 5s secondary swell from a East-southeast direction, 0.6m 8s secondary swell from a East-southeast direction (forecast issued at 08:00pm October 16). The wind direction is predicted to be glassy.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Oct) | 2ft (0.6m) | 8s |
| Afternoon (17 Oct) | 2ft (0.6m) | 9s |
| Evening (17 Oct) | 3ft (0.9m) | 8s |
Table - waves today at Lopes Mendes (Ilha Grande). (Swell directed towards the surf break)
Thu 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||||||||
| 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Rating (10 max) | ||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 9 | 9 | 9 | 9 | 8 | 8 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 4 | 5 | 5 | 7 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 61 | 45 | 61 | 58 | 52 | 52 | 54 | 54 | 52 | 85 | 143 | 202 | 178 | 151 | 40 | 25 | 23 | 13 | 63 | 126 | 302 | 569 | 540 | 630 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | glass | glass | glass | glass | glass | cross | cross- off | on | glass | on | on | on | on | cross- off | on | on | on | on | on | on | on | on | cross- on |
High Tide / height (m) | 12:07AM 0.89 | 1:12PM 1.00 | 12:31AM 1.00 | 1:17PM 1.03 | 12:59AM 1.08 | 1:30PM 1.06 | ||||||||||||||||||
Low Tide / height (m) | 6:19PM 0.46 | 6:26AM 0.15 | 6:52PM 0.36 | 7:05AM 0.11 | 7:22PM 0.28 | 7:39AM 0.09 | ||||||||||||||||||
Thu 16 | Friday 17 | Saturday 18 | Sunday 19 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 5:22 | - | - | - | - | - | - | - | 5:20 | - | - | - | - | - | - | - | 5:20 | - | - | - |
| Sunset | 6:00 | - | - | - | - | - | - | - | 6:00 | - | - | - | - | - | - | - | 6:01 | - | - | - | - | - | - | - |
 |  | | | | | | |  |  | |  | |  | | | |  | | |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | 1 | - | - | 1 | 1 | - | - | - | 3 | 7 | 8 | 5 | 9 | 3 | 3 | 7 |
| Temp. °C | 20 | 20 | 20 | 20 | 20 | 21 | 22 | 22 | 22 | 23 | 22 | 21 | 21 | 22 | 22 | 22 | 21 | 21 | 21 | 20 | 20 | 19 | 19 | 18 |
| Feels °C (?) | 21 | 22 | 23 | 23 | 22 | 23 | 22 | 24 | 24 | 26 | 24 | 21 | 22 | 24 | 24 | 22 | 23 | 23 | 20 | 17 | 18 | 17 | 18 | 15 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Rio de Janeiro
Continuing clean conditions at Lopes Mendes (Ilha Grande) (light winds from the NNW at Seropedica -Ecologia Agricola 61 km from Lopes Mendes (Ilha Grande)). 0.6m 4s local chop from the ESE with a 0.5m 9s swell from the SSW. 2 swells combining to make bigger set waves.
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