Surf Forecasts:
How big are the waves at Maresias today (18 Oct):
- Morning surf: Morning surf (18 Oct, local time) - 3.5ft (1.1m), 8s period with S swell.
- Afternoon surf: Afternoon surf (18 Oct, local time) - 6ft (1.8m), 12s period with S swell.
- Evening surf: Evening surf (18 Oct, local time) - 6.5ft (2.0m), 13s period with S swell.
The current surf forecast for Maresias at 1AM is: 1.0m 9s primary swell from a East-southeast direction and 1.0m 8s secondary swell from a South direction (forecast issued at 08:00pm October 17). The wind direction is predicted to be offshore and the swell rating is 2.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Oct) | 3.5ft (1.1m) | 8s |
| Afternoon (18 Oct) | 6ft (1.8m) | 12s |
| Evening (18 Oct) | 6.5ft (2.0m) | 13s |
Table - waves today at Maresias. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 8mm), mostly falling on Sun night. Warm (max 21°C on Sun morning, min 17°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Sat 17 | Sunday 18 | Monday 19 | ||||||||||||||||
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) | SE 9 | SE 9 | ESE 9 | ESE 9 | ESE 9 | S 8 | S 12 | S 12 | S 11 | S 13 | S 12 | S 12 | S 11 | S 11 | S 11 | S 11 | S 11 | S 10 |
Wave Graph  | ||||||||||||||||||
 kJ | 186 | 182 | 165 | 165 | 131 | 173 | 657 | 851 | 866 | 1278 | 1013 | 939 | 757 | 757 | 757 | 663 | 639 | 601 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-off | cross-off | glassy | cross-off | cross-on | cross-on | on | on | cross-on | glassy | on | on | glassy | on | on | cross-on | cross |
High Tide | 5:12PM0.80m | 7:12AM0.73m | 11:37AM0.74m | 6:21PM0.72m | 11:55AM0.83m | |||||||||||||
Low Tide | 1:29AM0.40m | 9:04AM0.71m | 3:13PM0.65m | 3:25AM0.39m | 4:35PM0.57m | |||||||||||||
 |  |  |  |  |  | | | |  | |  |  | | |  | | | |
 | — | — | — | 5:26 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — |
 | 6:07 | — | — | — | — | — | — | — | 6:07 | — | — | — | — | — | — | — | 6:07 | — |
mm | — | — | 1 | — | — | 1 | 1 | 1 | — | — | — | 1 | 2 | 1 | — | — | — | — |
Temp °C | 20 | 19 | 19 | 19 | 18 | 20 | 21 | 21 | 20 | 19 | 19 | 18 | 17 | 18 | 20 | 20 | 19 | 18 |
Feels °C | 23 | 21 | 21 | 21 | 19 | 21 | 22 | 22 | 21 | 20 | 21 | 19 | 17 | 19 | 20 | 20 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | ESE 9 | ESE 9 | S 8 | S 8 | S 12 | S 12 | S 11 | S 13 | S 12 | S 12 | S 11 | S 11 | S 11 | S 11 | S 11 | S 10 |
| kJ | 186 | 182 | 165 | 165 | 131 | 173 | 657 | 851 | 866 | 1278 | 1013 | 939 | 757 | 757 | 757 | 663 | 639 | 601 |
Swell 2 Height (m) Direction Period (s) | SSW 7 | S 8 | S 8 | SSW 8 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 |
| kJ | 117 | 115 | 124 | 104 | 124 | 141 | 176 | 175 | 168 | 168 | 120 | 105 | 78 | 75 | 55 | 47 | 46 | 31 |
Swell 3 Height (m) Direction Period (s) | SE 15 | SE 15 | SE 15 | SE 11 | SE 11 | SE 11 | — | E 9 | E 8 | — | — | — | — | — | — | — | — | — |
| kJ | 9 | 9 | 8 | 19 | 43 | 44 | — | 1 | 1 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 26 | 66 | 66 | 19 | 19 | 0 | 47 | 26 | 0 | 4 | 19 | 10 | 4 |
Best forecast wave conditions in São Paulo | ||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||
Header Global | ||||||||||||||||||
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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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