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Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Lopes Mendes (Ilha Grande) surfForecast / Rio de Janeiro / Brazil
48hr Weather and Surf, issued 2 pm Wednesday 17 Dec 2025 -03Forecast 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
25.2° C
(Which is slightly warmer than usual)How big are the waves at Lopes Mendes (Ilha Grande) today?
The current surf forecast for Lopes Mendes (Ilha Grande) at 8PM is: 1.8m 8s primary swell from a South direction and 1.2m 7s secondary swell from a South-southeast direction (forecast issued at 02:00pm December 17). The wind direction is predicted to be cross-onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Dec) | - | - |
| Afternoon (17 Dec) | 5ft (1.5m) | 8s |
| Evening (17 Dec) | 6ft (1.8m) | 8s |
Table - waves today at Lopes Mendes (Ilha Grande). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| 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 | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | |
Rating (10 max) | ||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 7 | 7 | 8 | 5 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 284 | 298 | 306 | 427 | 390 | 400 | 338 | 221 | 189 | 173 | 331 | 250 | 240 | 189 | 173 | 141 | 138 | 108 | 77 | 62 | 54 | 39 | 74 | 52 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- on | cross- on | cross- on | cross- on | cross- on | glass | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross- off |
High Tide / height (m) | 12:55PM 0.90 | 1:48AM 1.04 | 1:26PM 0.93 | 2:22AM 1.07 | 1:57PM 0.96 | 2:54AM 1.09 | ||||||||||||||||||
Low Tide / height (m) | 7:34PM 0.16 | 8:12AM 0.34 | 8:10PM 0.10 | 8:49AM 0.34 | 8:47PM 0.06 | |||||||||||||||||||
Wednesday 17 | Thursday 18 | Friday 19 | Saturday 20 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | 5:05 | - | - | - | - | - | - | - | 5:05 | - | - | - | - | - | - | - | 5:05 | - |
| Sunset | - | - | 6:38 | - | - | - | - | - | - | - | 6:38 | - | - | - | - | - | - | - | 6:39 | - | - | - | - | - |
 | |  |  |  | | | | | | |  |  | |  | |  | | | | | | | | |
Rain (mm) | - | - | 2 | - | 1 | - | - | - | - | 1 | 1 | 1 | - | - | - | - | - | - | 1 | 1 | - | - | - | - |
| Temp. °C | 21 | 21 | 20 | 21 | 21 | 21 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 23 | 22 | 22 | 22 | 23 | 23 | 23 | 23 |
| Feels °C (?) | 22 | 21 | 20 | 22 | 22 | 22 | 22 | 23 | 22 | 21 | 21 | 20 | 21 | 21 | 22 | 24 | 24 | 23 | 23 | 22 | 24 | 25 | 26 | 25 |
- 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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