Surf Forecasts:
How big are the waves at Siriu today (18 Oct):
- Morning surf: Morning surf (18 Oct, local time) - 7.5ft (2.3m), 12s period with S swell.
- Afternoon surf: Afternoon surf (18 Oct, local time) - 8ft (2.5m), 11s period with S swell.
- Evening surf: Evening surf (18 Oct, local time) - 10ft (3.0m), 10s period with S swell.
The current surf forecast for Siriu at 3AM is: 2.1m 10s primary swell from a South direction and 0.9m 10s secondary swell from a East-southeast direction (forecast issued at 08:00pm October 17). An open ocean swell of 3.0m 10s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 4.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Oct) | 7.5ft (2.3m) | 12s |
| Afternoon (18 Oct) | 8ft (2.5m) | 11s |
| Evening (18 Oct) | 10ft (3.0m) | 10s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 19°C on Sun morning, min 12°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) | S 9 | S 9 | S 10 | S 10 | S 11 | S 12 | S 12 | S 11 | S 11 | S 10 | S 10 | S 11 | SSE 10 | SSE 10 | SSE 10 | S 10 | SSE 10 | SSE 10 |
Wave Graph  | ||||||||||||||||||
 kJ | 334 | 1064 | 1039 | 902 | 1037 | 1513 | 2079 | 1701 | 1769 | 1820 | 1911 | 1862 | 901 | 772 | 671 | 1019 | 698 | 763 |
Wind (km/h) | ||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | off | cross-off | cross-off | cross-on | cross | cross-off | cross-off | cross-off | cross-off | off | glassy | cross-on | cross-on | cross | cross-off |
High Tide | 4:06PM0.53m | 10:26PM0.29m | 11:22AM0.58m | 5:14PM0.48m | 11:34AM0.63m | |||||||||||||
Low Tide | 10:07PM0.29m | 1:28AM0.26m | 3:35PM0.47m | 3:01AM0.23m | 4:27PM0.41m | |||||||||||||
 |  |  | | | |  | | | | | | | | | |  | | |
 | — | — | — | 5:35 | — | — | — | — | — | — | — | 5:33 | — | — | — | — | — | — |
 | 6:22 | — | — | — | — | — | — | — | 6:23 | — | — | — | — | — | — | — | 6:23 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 18 | 16 | 15 | 14 | 14 | 17 | 19 | 18 | 17 | 15 | 14 | 13 | 12 | 16 | 18 | 17 | 16 | 15 |
Feels °C | 17 | 15 | 12 | 12 | 12 | 14 | 14 | 14 | 13 | 12 | 12 | 10 | 9 | 14 | 15 | 14 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | S 9 | S 9 | S 10 | S 10 | S 11 | S 12 | S 12 | S 11 | S 11 | S 11 | SSE 10 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 |
| kJ | 334 | 680 | 1039 | 902 | 1037 | 1513 | 1438 | 1165 | 1246 | 1304 | 1299 | 1121 | 901 | 772 | 671 | 671 | 698 | 763 |
Swell 2 Height (m) Direction Period (s) | ESE 9 | E 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 11 | ESE 11 | ESE 10 | ESE 10 | ESE 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | ESE 9 |
| kJ | 181 | 173 | 144 | 150 | 131 | 139 | 150 | 150 | 139 | 108 | 110 | 75 | 73 | 71 | 49 | 47 | 45 | 29 |
Swell 3 Height (m) Direction Period (s) | SE 14 | — | — | — | — | — | — | — | NE 8 | NE 8 | NE 7 | NE 8 | — | ENE 8 | ENE 8 | ENE 8 | ENE 8 | NE 8 |
| kJ | 7 | — | — | — | — | — | — | — | 3 | 2 | 2 | 3 | — | 6 | 6 | 6 | 6 | 3 |
Wind waves Height (m) Direction Period (s) | — | S 9 | S 10 | SSW 10 | SSW 11 | — | S 12 | S 11 | S 11 | S 10 | S 10 | S 11 | — | — | — | S 10 | — | — |
| kJ | — | 1064 | 1799 | 1845 | 2130 | — | 2079 | 1701 | 1769 | 1820 | 1911 | 1862 | — | — | — | 1019 | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 15 | 15 | 21 | 9 | 6 | 6 | 0 | 0 | 13 | 13 | 10 | 0 |
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