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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 2 pm Monday 18 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
23.5° 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 5PM is: 0.7m 10s primary swell from a South direction and 0.3m 16s secondary swell from a South direction, 0.6m 4s secondary swell from a Southwest direction (forecast issued at 02:00pm May 18). The wind direction is predicted to be onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | - | - |
| Afternoon (18 May) | 2.5ft (0.8m) | 10s |
| Evening (18 May) | 2ft (0.6m) | 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 29mm), heaviest during Wed night. Warm (max 23°C on Mon afternoon, min 20°C on Wed night). Winds decreasing (fresh winds from the WSW on Tue morning, light winds from the SSE by Wed night). | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | |
S 10 | S 10 | S 10 | S 10 | S 15 | S 14 | S 9 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | S 18 | S 17 | S 16 | S 16 | S 15 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 14 | S 15 | |
125 | 122 | 90 | 65 | 67 | 63 | 81 | 351 | 412 | 393 | 339 | 1038 | 1485 | 2855 | 2749 | 2407 | 2121 | 1575 | 1304 | 1001 | 961 | 976 | 1321 | 1695 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | on | on | cross-on | cross-on | cross | cross | cross | cross-on | |
High Tide | 3:52PM1.11m | 3:18AM0.94m | 4:36PM1.02m | 3:53AM0.93m | 5:24PM0.91m | 4:33AM0.91m | ||||||||||||||||||
Low Tide | 10:08AM0.04m | 11:02PM0.43m | 10:56AM0.06m | 11:52PM0.53m | 11:51AM0.11m | 00:45AM0.60m | ||||||||||||||||||
 | |  | | |  | |  | | | | | | | | |  | | | | | | |  | |
 | — | — | — | — | — | — | 6:24 | — | — | — | — | — | — | — | 6:24 | — | — | — | — | — | — | — | 6:24 | — |
 | — | 5:21 | — | — | — | — | — | — | — | 5:21 | — | — | — | — | — | — | — | 5:21 | — | — | — | — | — | 5:20 |
— | — | 2 | 2 | 1 | — | — | 1 | — | — | 1 | 1 | 2 | 1 | — | — | — | 1 | 1 | 2 | 4 | 3 | 2 | 2 | |
Temp °C | 23 | 23 | 22 | 21 | 22 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 20 |
24 | 24 | 23 | 21 | 23 | 21 | 19 | 18 | 19 | 20 | 21 | 22 | 22 | 22 | 22 | 21 | 21 | 21 | 23 | 21 | 21 | 21 | 22 | 22 | |
Swell 1 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | S 10 | S 10 | S 9 | S 9 | S 13 | S 13 | S 15 | S 19 | SSW 8 | S 8 | S 16 | S 16 | S 15 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 14 | S 15 |
 kJ | 125 | 122 | 90 | 65 | 64 | 62 | 81 | 55 | 51 | 107 | 266 | 324 | 310 | 2855 | 2749 | 2407 | 2121 | 1575 | 1304 | 1001 | 961 | 976 | 1321 | 1695 |
Swell 2 Height (m) Direction Period (s) | E 7 | S 16 | S 16 | S 15 | S 15 | S 14 | S 14 | S 16 | S 16 | S 20 | S 15 | S 18 | S 17 | SE 12 | SE 12 | SE 7 | SE 7 | SE 6 | SE 6 | SE 6 | E 8 | E 8 | SE 6 | SE 5 |
| kJ | 4 | 20 | 43 | 39 | 67 | 63 | 57 | 46 | 45 | 121 | 157 | 1038 | 1485 | 6 | 6 | 61 | 52 | 47 | 36 | 34 | 5 | 4 | 36 | 30 |
Swell 3 Height (m) Direction Period (s) | S 16 | E 7 | E 7 | E 7 | E 7 | E 7 | S 16 | E 7 | S 21 | S 12 | S 12 | E 7 | E 7 | — | — | — | E 8 | E 8 | E 8 | E 8 | — | — | — | — |
| kJ | 21 | 4 | 4 | 4 | 4 | 4 | 46 | 4 | 36 | 11 | 45 | 1 | 4 | — | — | — | 5 | 5 | 5 | 5 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | S 5 | SW 3 | SW 4 | SW 5 | SW 5 | SW 5 | SW 5 | SSW 8 | SSW 8 | SSW 8 | SSW 8 | — | — | — | — | — | — | — | — | — | SE 6 | SE 6 | — | — |
| kJ | 2 | 3 | 20 | 55 | 53 | 39 | 32 | 351 | 412 | 393 | 339 | — | — | — | — | — | — | — | — | — | 39 | 43 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 20 | 20 | 20 | 65 | 20 | 90 | 90 | 97 | 97 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 20 | 71 | 71 | 59 | 97 | 97 | 58 |
Best forecast wave conditions in Rio de Janeiro | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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