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Surf Forecasts:
Lopes Mendes (Ilha Grande) surfForecast / Rio de Janeiro / Brazil
48hr Weather and Surf, issued 2 am Friday 12 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
24.9° C
(Which is normal for this time of year)How big are the waves at Lopes Mendes (Ilha Grande) today?
The current surf forecast for Lopes Mendes (Ilha Grande) at 9AM is: 2.2m 12s primary swell from a South-southwest direction (forecast issued at 02:00am December 12). An open ocean swell of 0.3m 9s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 4.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 7ft (2.2m) | 12s |
| Afternoon (12 Dec) | 6ft (1.9m) | 12s |
| Evening (12 Dec) | 5ft (1.6m) | 11s |
Table - waves today at Lopes Mendes (Ilha Grande). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | ||||||||||||||||||||||
| 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 | 6 PM | 9 PM | |
Rating (10 max) | ||||||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1485 | 1671 | 1532 | 1428 | 1214 | 1064 | 928 | 681 | 545 | 469 | 385 | 346 | 349 | 290 | 290 | 288 | 242 | 244 | 250 | 204 | 125 | 125 | 96 | 94 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | cross- off | cross- off | cross- off | off | off | glass | cross | cross- on | cross- on | cross | cross- off | glass | on | off | off | cross- off | cross | glass | cross | cross- off | off |
High Tide / height (m) | 8:43AM 0.75 | 8:00PM 0.80 | 10:32AM 0.77 | 10:18PM 0.81 | 11:11AM 0.81 | |||||||||||||||||||
Low Tide / height (m) | 2:48AM 0.34 | 3:22PM 0.55 | 3:53AM 0.38 | 4:26PM 0.48 | 4:58AM 0.40 | 5:24PM 0.39 | ||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | ||||||||||||||||||||||
| Sunrise | - | - | 5:03 | - | - | - | - | - | - | - | 5:03 | - | - | - | - | - | - | - | 5:03 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:36 | - | - | - | - | - | - | - | 6:36 | - | - | - | - | - | - | - | 6:37 | - |
 | |  | | |  |  |  | |  |  |  | | | |  |  | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 2 | - | - | 5 | 11 | - | - | - | - | - | - | - |
| Temp. °C | 24 | 24 | 24 | 26 | 26 | 26 | 25 | 25 | 25 | 24 | 23 | 23 | 23 | 24 | 24 | 23 | 23 | 24 | 24 | 25 | 25 | 25 | 25 | 25 |
| Feels °C (?) | 23 | 23 | 24 | 26 | 25 | 28 | 27 | 28 | 28 | 26 | 22 | 25 | 25 | 26 | 28 | 27 | 24 | 26 | 27 | 28 | 29 | 28 | 28 | 27 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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