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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 Sunday 17 May 2026 -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
23.2° 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 4AM is: 1.0m 10s primary swell from a South direction (forecast issued at 08:00pm May 17). An open ocean swell of 0.1m 7s is not directed at the surf break, a second open ocean swell of 0.2m 7s is not directed at the surf break. The wind direction is predicted to be cross-offshore and the swell rating is 2.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 2.5ft (0.8m) | 10s |
| Afternoon (18 May) | 2.5ft (0.8m) | 10s |
| Evening (18 May) | 2.5ft (0.7m) | 10s |
Table - waves today at Lopes Mendes (Ilha Grande). (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 27mm), heaviest during Mon night. Warm (max 24°C on Mon morning, min 20°C on Tue afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Sun 17 | Monday 18 | Tuesday 19 | Wednesday 20 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
S 11 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SSW 10 | S 14 | SSW 9 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | S 18 | S 17 | S 16 | S 16 | S 15 | S 14 | S 14 | |
274 | 269 | 264 | 208 | 162 | 127 | 123 | 122 | 92 | 90 | 120 | 63 | 92 | 486 | 549 | 516 | 498 | 891 | 1485 | 1606 | 1909 | 2652 | 1945 | 1563 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | cross-on | cross-off | off | cross-on | cross | on | on | on | cross-on | cross-on | on | on | on | on | on | on | cross-on | cross-on | glassy | glassy | glassy | on | on | |
High Tide | 3:10PM1.17m | 2:47AM0.95m | 3:52PM1.11m | 3:18AM0.94m | 4:36PM1.02m | 3:53AM0.93m | ||||||||||||||||||
Low Tide | 10:14PM0.32m | 10:08AM0.04m | 11:02PM0.43m | 10:56AM0.06m | 11:52PM0.53m | 11:51AM0.11m | ||||||||||||||||||
 |  |  |  | |  |  | | |  | | | | | |  | | | | | | |  | | |
 | — | — | — | — | 6:22 | — | — | — | — | — | — | — | 6:24 | — | — | — | — | — | — | — | 6:24 | — | — | — |
 | — | — | — | — | — | — | — | 5:21 | — | — | — | — | — | — | — | 5:21 | — | — | — | — | — | — | — | 5:21 |
1 | — | 2 | — | — | — | — | — | 3 | 6 | 2 | 1 | 1 | — | — | 1 | 5 | 3 | 1 | 1 | — | — | — | — | |
Temp °C | 23 | 23 | 22 | 23 | 23 | 23 | 24 | 23 | 21 | 21 | 21 | 22 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 21 | 21 | 22 | 22 |
26 | 25 | 24 | 24 | 24 | 25 | 26 | 25 | 22 | 23 | 24 | 23 | 20 | 19 | 20 | 20 | 20 | 21 | 21 | 22 | 23 | 23 | 23 | 21 | |
Swell 1 Height (m) Direction Period (s) | S 11 | S 11 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SSW 10 | S 9 | SSW 9 | S 13 | S 13 | S 20 | S 19 | SSW 8 | S 8 | S 16 | S 16 | S 15 | S 14 | S 14 |
 kJ | 274 | 269 | 264 | 208 | 162 | 127 | 123 | 122 | 92 | 90 | 120 | 62 | 92 | 55 | 51 | 121 | 266 | 483 | 393 | 1606 | 1909 | 2652 | 1945 | 1563 |
Swell 2 Height (m) Direction Period (s) | E 7 | E 7 | E 7 | NE 7 | E 4 | E 7 | E 7 | S 16 | S 16 | S 15 | S 15 | S 14 | S 13 | S 16 | S 16 | S 15 | S 15 | S 18 | S 17 | S 8 | S 8 | SE 7 | SE 7 | E 8 |
| kJ | 1 | 1 | 1 | 2 | 1 | 4 | 4 | 20 | 43 | 39 | 67 | 63 | 56 | 46 | 45 | 69 | 157 | 891 | 1485 | 314 | 228 | 118 | 91 | 5 |
Swell 3 Height (m) Direction Period (s) | SE 12 | SE 12 | S 18 | S 19 | E 7 | S 17 | S 16 | E 5 | E 5 | E 7 | E 7 | E 7 | S 16 | E 7 | S 21 | S 12 | S 12 | E 7 | E 7 | SE 12 | — | — | — | — |
| kJ | 6 | 5 | 6 | 7 | 1 | 5 | 21 | 2 | 2 | 4 | 4 | 4 | 21 | 4 | 36 | 11 | 11 | 1 | 4 | 6 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | WSW 2 | ENE 7 | — | — | — | — | — | — | SW 5 | SW 5 | SW 5 | SSW 9 | SSW 9 | SSW 8 | SSW 8 | WSW 4 | — | — | — | — | — | SE 7 |
| kJ | — | — | 1 | 5 | — | — | — | — | — | — | 30 | 47 | 63 | 486 | 549 | 516 | 498 | 26 | — | — | — | — | — | 75 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 20 | 0 | 0 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 90 | 90 | 93 | 65 | 20 | 20 | 20 | 0 | 0 | 0 | 20 | 65 |
Best forecast wave conditions in Rio de Janeiro | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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