Surf Forecasts:
How big are the waves at Grumari today (16 Sep):
- Morning surf: Morning surf (16 Sep, local time) - 2.5ft (0.8m), 10s period with S swell.
- Afternoon surf: Afternoon surf (16 Sep, local time) - 4.5ft (1.4m), 12s period with S swell.
- Evening surf: Evening surf (16 Sep, local time) - 3.5ft (1.1m), 12s period with S swell.
The current surf forecast for Grumari at 12PM is: 0.7m 13s primary swell from a South direction and 0.7m 10s secondary swell from a South direction, 0.8m 6s secondary swell from a South-southwest direction (forecast issued at 08:00am September 16). The wind direction is predicted to be cross-onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Sep) | 2.5ft (0.8m) | 10s |
| Afternoon (16 Sep) | 4.5ft (1.4m) | 12s |
| Evening (16 Sep) | 3.5ft (1.1m) | 12s |
Table - waves today at Grumari. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Wed morning. Warm (max 21°C on Fri afternoon, min 18°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | SSW 9 | S 10 | S 13 | S 12 | S 12 | S 12 | S 11 | S 11 | S 10 | S 10 | S 10 | S 12 | S 11 | S 10 | S 10 | S 10 | S 11 | S 11 | S 11 | S 11 | S 11 | S 10 |
Wave Graph  | ||||||||||||||||||||||
 kJ | 248 | 131 | 157 | 566 | 628 | 325 | 698 | 651 | 470 | 414 | 417 | 902 | 695 | 674 | 332 | 326 | 396 | 403 | 345 | 332 | 326 | 260 |
Wind (km/h) | ||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | on | on | on | cross-on | cross-on | cross | cross | cross | cross-on | cross | cross | cross | cross-off | cross | cross | cross | cross-on | cross | cross |
High Tide | 5:06AM1.01m | 4:54PM0.93m | 5:46AM0.89m | 5:20PM0.85m | 6:40AM0.78m | 5:51PM0.76m | ||||||||||||||||
Low Tide | 11:30AM0.47m | 11:33PM0.29m | 11:58AM0.57m | 00:25AM0.36m | 1:49PM0.66m | |||||||||||||||||
 |  | | |  | | | |  | | | | | |  | | | | | | | | |
 | 5:50 | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — | — | 5:48 | — | — | — | — | — | — |
 | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:47 | — | — | — | — | — | — | — | 5:47 | — | — |
mm | — | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 20 | 20 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 19 | 19 | 18 | 18 | 18 | 18 | 18 | 19 | 20 | 21 | 20 | 19 |
Feels °C | 19 | 20 | 20 | 18 | 18 | 18 | 19 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 18 | 17 | 19 | 19 | 19 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | SSW 9 | S 10 | S 10 | S 12 | S 12 | S 7 | S 11 | S 11 | S 10 | S 10 | S 10 | S 12 | S 11 | S 10 | S 10 | S 10 | S 11 | S 11 | S 11 | S 11 | S 11 | S 10 |
| kJ | 248 | 131 | 96 | 566 | 628 | 152 | 698 | 651 | 470 | 414 | 417 | 902 | 695 | 674 | 332 | 326 | 396 | 403 | 345 | 332 | 326 | 260 |
Swell 2 Height (m) Direction Period (s) | E 8 | ESE 8 | S 13 | E 8 | ESE 8 | S 12 | ESE 11 | ESE 8 | S 14 | S 14 | S 13 | ESE 10 | ESE 9 | ESE 10 | S 12 | S 12 | ESE 9 | ESE 8 | — | — | — | — |
| kJ | 48 | 51 | 157 | 34 | 53 | 325 | 68 | 33 | 148 | 181 | 173 | 54 | 48 | 51 | 138 | 141 | 44 | 41 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SSE 8 | SE 8 | SSE 8 | SE 9 | SE 9 | ESE 8 | S 16 | S 15 | ESE 10 | ESE 10 | ESE 10 | SE 8 | SE 8 | ESE 10 | ESE 10 | ESE 9 | — | — | — | — | — | — |
| kJ | 43 | 34 | 40 | 37 | 36 | 51 | 79 | 109 | 62 | 58 | 56 | 3 | 2 | 72 | 51 | 47 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSW 6 | SSW 6 | S 7 | S 7 | — | — | — | — | — | — | — | ESE 4 | E 4 | E 4 | ESE 5 | ESE 5 | ESE 5 | ESE 6 | ESE 6 | ESE 6 | ESE 6 |
| kJ | — | 34 | 34 | 107 | 124 | — | — | — | — | — | — | — | 11 | 15 | 22 | 32 | 39 | 50 | 98 | 141 | 192 | 230 |
Nearest Offshore or Glassy | ||||||||||||||||||||||
Distance (km) | 2 | 82 | 82 | 159 | 171 | 122 | 63 | 5 | 5 | 5 | 5 | 5 | 8 | 5 | 5 | 0 | 5 | 5 | 5 | 122 | 122 | 122 |
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)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Grumari surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest