Surf Forecasts:
How big are the waves at Siriu today (18 Aug):
- Afternoon surf: Afternoon surf (18 Aug, local time) - 5ft (1.5m), 8s period with ENE swell.
- Evening surf: Evening surf (18 Aug, local time) - 4.5ft (1.3m), 9s period with ENE swell.
The current surf forecast for Siriu at 8PM is: 1.3m 8s primary swell from a East-northeast direction and 0.1m 10s secondary swell from a South direction (forecast issued at 02:00pm August 18). An open ocean swell of 0.7m 4s 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 Aug) | - | - |
| Afternoon (18 Aug) | 5ft (1.5m) | 8s |
| Evening (18 Aug) | 4.5ft (1.3m) | 9s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Wed afternoon. Warm (max 33°C on Tue afternoon, min 17°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | ||||||||||||||||||
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) | NE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | S 9 | ENE 7 |
Wave Graph  | ||||||||||||||||||||
 kJ | 481 | 294 | 284 | 245 | 245 | 190 | 153 | 125 | 113 | 107 | 83 | 83 | 77 | 96 | 96 | 94 | 94 | 134 | 42 | 41 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | glassy | glassy | cross-off | cross-off | cross | cross | cross | cross | cross | cross-on | cross | cross-on | cross | cross-on | cross-on | cross | cross |
High Tide | 4:18PM0.58m | 5:03AM0.59m | 4:39PM0.55m | 6:01AM0.51m | 12:32PM0.51m | 4:54PM0.51m | ||||||||||||||
Low Tide | 9:51AM0.35m | 9:35PM0.25m | 9:21AM0.40m | 10:01PM0.27m | 9:02AM0.45m | 2:44PM0.49m | ||||||||||||||
 | |  |  | | | | |  | |  |  | | | | | | | | | |
 | — | — | — | — | — | — | 6:41 | — | — | — | — | — | — | — | 6:41 | — | — | — | — | — |
 | — | 5:53 | — | — | — | — | — | — | — | 5:53 | — | — | — | — | — | — | — | 5:53 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 31 | 33 | 28 | 24 | 22 | 19 | 19 | 20 | 22 | 20 | 19 | 18 | 18 | 18 | 18 | 19 | 23 | 23 | 20 | 19 |
Feels °C | 30 | 32 | 29 | 26 | 23 | 19 | 19 | 20 | 22 | 20 | 19 | 19 | 19 | 19 | 18 | 19 | 21 | 20 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 9 | ENE 7 | ENE 7 |
| kJ | 287 | 294 | 284 | 245 | 245 | 190 | 153 | 125 | 113 | 107 | 83 | 83 | 77 | 96 | 96 | 94 | 94 | 55 | 42 | 41 |
Swell 2 Height (m) Direction Period (s) | S 10 | S 10 | S 10 | S 9 | S 9 | S 9 | S 9 | S 9 | S 8 | S 8 | S 7 | S 7 | S 7 | S 7 | S 7 | S 7 | S 9 | SE 12 | S 9 | S 8 |
| kJ | 8 | 8 | 2 | 2 | 6 | 6 | 2 | 2 | 1 | 5 | 4 | 4 | 8 | 15 | 22 | 21 | 78 | 6 | 36 | 22 |
Swell 3 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 8 | SE 8 | E 14 | — | SE 13 | SE 12 | E 13 | SE 13 | SE 13 | S 3 | S 11 | S 10 | S 10 | S 9 | SE 12 | — | SE 12 | SSE 5 |
| kJ | 3 | 3 | 3 | 3 | 4 | — | 7 | 6 | 3 | 7 | 7 | 1 | 20 | 31 | 29 | 41 | 6 | — | 5 | 3 |
Wind waves Height (m) Direction Period (s) | NE 8 | N 4 | NNW 4 | — | — | SSW 3 | S 3 | S 3 | S 3 | S 3 | S 3 | S 3 | — | — | — | — | NNE 3 | ENE 7 | ENE 5 | NE 5 |
| kJ | 481 | 31 | 21 | — | — | 1 | 1 | 1 | 1 | 2 | 2 | 3 | — | — | — | — | 3 | 134 | 39 | 26 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 9 | 6 | 0 | 0 | 0 | 0 | 0 | 15 | 15 | 15 | 15 | 15 | 9 | 9 | 9 | 9 | 16 | 16 | 9 | 9 |
Best forecast wave conditions in Santa Catarina - Sul | ||||||||||||||||||||
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 Siriu 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