
Surf Forecasts:
How big are the waves at Lopes Mendes (Ilha Grande) today (12 Sep):
- Morning surf: Morning surf (12 Sep, local time) - 2.5ft (0.7m), 12s period with S swell.
- Afternoon surf: Afternoon surf (12 Sep, local time) - 2ft (0.6m), 11s period with S swell.
- Evening surf: Evening surf (12 Sep, local time) - 1.5ft (0.5m), 11s period with S swell.
The current surf forecast for Lopes Mendes (Ilha Grande) at 7AM is: 0.8m 12s primary swell from a South direction and 1.1m 4s secondary swell from a Southwest direction (forecast issued at 02:00am September 12). An open ocean swell of 0.6m 8s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Sep) | 2.5ft (0.7m) | 12s |
| Afternoon (12 Sep) | 2ft (0.6m) | 11s |
| Evening (12 Sep) | 1.5ft (0.5m) | 11s |
Table - waves today at Lopes Mendes (Ilha Grande). (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 39mm), heaviest during Mon night. Warm (max 26°C on Sat morning, min 19°C on Sun afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | ||||||||||||||||||||||
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 | 6 PM | 9 PM | |
Wave Height (m) Direction Period (s) | S 12 | S 12 | S 12 | S 12 | S 11 | S 11 | S 11 | S 11 | S 11 | SSW 10 | S 10 | S 6 | S 7 | S 7 | S 8 | S 8 | S 8 | SSE 8 | SSE 8 | S 9 | S 9 | S 8 | SSE 8 | SSE 8 |
Wave Graph | ||||||||||||||||||||||||
232 | 180 | 174 | 132 | 119 | 85 | 85 | 58 | 57 | 35 | 31 | 112 | 131 | 217 | 284 | 241 | 227 | 202 | 207 | 177 | 210 | 239 | 235 | 264 | |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | on | cross-on | cross-off | off | on | cross-on | cross-on | cross | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | glassy | cross | on | on |
High Tide | 3:05PM1.09m | 3:08AM1.22m | 3:27PM1.07m | 3:41AM1.18m | 3:50PM1.04m | |||||||||||||||||||
Low Tide | 9:40AM0.02m | 9:45PM0.20m | 10:10AM0.12m | 10:10PM0.19m | 10:38AM0.23m | |||||||||||||||||||
— | 5:56 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | |
— | — | — | — | — | 5:49 | — | — | — | — | — | — | — | 5:49 | — | — | — | — | — | — | — | 5:50 | — | — | |
mm | — | — | 2 | — | — | — | 1 | 1 | 1 | 1 | 2 | 1 | — | 1 | 1 | 3 | 3 | 2 | 1 | — | — | — | 1 | 6 |
Temp °C | 27 | 25 | 22 | 24 | 26 | 25 | 23 | 21 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 19 | 19 | 20 | 20 | 20 | 21 | 20 | 20 |
Feels °C | 30 | 26 | 21 | 26 | 27 | 27 | 25 | 23 | 20 | 21 | 20 | 21 | 20 | 20 | 18 | 19 | 17 | 20 | 22 | 21 | 22 | 23 | 19 | 19 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | S 12 | SW 5 | SW 5 | S 11 | S 11 | S 11 | SW 4 | SW 4 | SSW 4 | S 6 | S 7 | S 7 | S 8 | S 8 | S 8 | SSE 8 | SSE 8 | S 9 | S 9 | S 8 | SSE 8 | SSE 8 |
232 | 180 | 174 | 60 | 25 | 85 | 85 | 58 | 10 | 9 | 15 | 44 | 131 | 217 | 284 | 241 | 227 | 202 | 207 | 177 | 210 | 239 | 235 | 264 | |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | S 12 | S 11 | E 8 | E 8 | E 8 | S 11 | SSW 10 | S 10 | SSW 10 | SSW 9 | ESE 9 | E 9 | E 8 | E 8 | E 8 | E 8 | ESE 5 | ESE 5 | ESE 5 | S 12 | S 12 |
29 | 42 | 41 | 132 | 119 | 44 | 30 | 19 | 57 | 35 | 31 | 31 | 29 | 25 | 39 | 37 | 36 | 36 | 36 | 26 | 22 | 21 | 102 | 102 | |
Swell 3 Height (m) Direction Period (s) | E 4 | ESE 12 | ESE 12 | E 8 | E 8 | SW 5 | ESE 11 | ESE 11 | E 8 | E 8 | ESE 8 | E 8 | ESE 8 | — | S 15 | S 11 | S 14 | S 14 | S 14 | E 8 | E 8 | S 12 | ESE 8 | E 8 |
6 | 14 | 13 | 40 | 42 | 10 | 13 | 11 | 19 | 20 | 22 | 21 | 24 | — | 4 | 2 | 16 | 16 | 32 | 36 | 36 | 73 | 23 | 35 | |
Wind waves Height (m) Direction Period (s) | N 3 | — | SW 4 | W 5 | — | — | SSW 4 | SW 4 | — | — | S 5 | S 6 | — | — | E 5 | — | — | ESE 5 | ESE 5 | — | — | — | E 6 | — |
1 | — | 52 | 25 | — | — | 7 | 9 | — | — | 29 | 112 | — | — | 15 | — | — | 36 | 39 | — | — | — | 15 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 58 | 20 | 0 | 0 | 20 | 97 | 215 | 97 | 223 | 97 | 0 | 0 | 58 | 59 | 0 | 58 | 0 | 0 | 0 | 0 | 58 | 65 | 71 |
Best forecast wave conditions in Rio de Janeiro | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)



