- Forecast
- Maps
- Live
- Weather State
- Spot Information
Siriu Surf Forecast
/ Santa Catarina – Sul (37 surf breaks) /
Surf Forecasts:
Siriu surfForecast / Santa Catarina – Sul / Brazil
48hr Weather and Surf, issued 8 pm Monday 18 May 2026 -03Forecast update in hr min s Forecast update imminent
Siriu surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Siriu sea temperature is
20.9° C
(Which is slightly cooler than normal)How big are the waves at Siriu today?
The current surf forecast for Siriu at 1AM is: 1.9m 7s primary swell from a South direction and 1.4m 7s secondary swell from a South direction, 0.3m 12s secondary swell from a South-southeast direction (forecast issued at 08:00pm May 18). The wind direction is predicted to be cross-offshore and the swell rating is 3.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 May) | 7ft (2.1m) | 13s |
| Afternoon (19 May) | 7ft (2.2m) | 16s |
| Evening (19 May) | 6.5ft (2.0m) | 14s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 17°C on Tue afternoon, min 12°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thursday 21 | |||||||||||||||||||||
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 | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | |
Swell Height Map |   |    |    |    | ||||||||||||||||||||
S 7 | S 6 | S 7 | S 7 | SSE 14 | S 13 | SSE 16 | SSE 16 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | S 13 | SSE 13 | S 13 | SSE 13 | SSE 14 | SSE 14 | S 15 | S 15 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | |
173 | 307 | 331 | 351 | 326 | 1556 | 2282 | 2186 | 1902 | 1644 | 1384 | 989 | 787 | 669 | 764 | 929 | 1505 | 1913 | 4343 | 5069 | 3441 | 3093 | 2801 | 2436 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross | cross-off | glassy | glassy | cross-off | cross-off | cross-on | cross-on | cross | cross-off | off | cross-off | cross-off | cross-off | cross | cross | |
High Tide | 3:30PM0.73m | 2:11AM0.55m | 4:16PM0.65m | 8:00PM0.64m | 2:35AM0.57m | 5:10PM0.58m | 9:36PM0.65m | 3:05AM0.59m | ||||||||||||||||
Low Tide | 11:03PM0.43m | 10:05AM0.09m | 6:31PM0.63m | 00:01AM0.51m | 11:05AM0.11m | 6:10PM0.57m | 00:59AM0.56m | 12:14PM0.14m | ||||||||||||||||
 |  | | |  |  |  | |  | | | | | | | | | | | | | | | | |
 | — | — | — | — | 6:50 | — | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — | — | 6:50 | — | — | — |
 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:30 |
1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 14 | 14 | 14 | 14 | 13 | 14 | 16 | 17 | 16 | 15 | 15 | 14 | 13 | 15 | 17 | 17 | 15 | 14 | 13 | 12 | 12 | 14 | 17 | 17 |
10 | 11 | 11 | 11 | 10 | 11 | 13 | 15 | 15 | 14 | 15 | 14 | 12 | 14 | 16 | 15 | 13 | 12 | 11 | 9 | 9 | 11 | 14 | 13 | |
Swell 1 Height (m) Direction Period (s) | S 7 | S 7 | S 7 | SSE 7 | SSE 7 | S 14 | SSE 16 | SSE 16 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | S 13 | SSE 13 | S 13 | SSE 13 | SSE 14 | SSE 14 | SSE 15 | SSE 16 | SSE 15 | SSE 15 | SSE 14 | SSE 14 |
 kJ | 173 | 173 | 187 | 191 | 143 | 961 | 2282 | 2186 | 1902 | 1644 | 1384 | 989 | 787 | 669 | 764 | 929 | 1505 | 1913 | 2653 | 3216 | 3441 | 3093 | 2801 | 2436 |
Swell 2 Height (m) Direction Period (s) | SSE 13 | SSE 12 | SSE 12 | SSE 14 | SSE 14 | SSE 18 | SSE 16 | — | ESE 5 | ESE 5 | E 6 | E 6 | E 6 | E 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | — | — | — | — |
| kJ | 55 | 50 | 29 | 118 | 326 | 486 | 686 | — | 10 | 10 | 9 | 10 | 5 | 10 | 17 | 9 | 9 | 9 | 5 | 5 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | SSE 16 | SE 16 | SSE 15 | SE 20 | SSE 19 | ESE 6 | — | — | — | ENE 7 | — | — | ENE 7 | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 25 | 11 | 44 | 61 | 243 | 22 | — | — | — | 5 | — | — | 5 | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 7 | S 6 | S 7 | S 7 | S 8 | S 13 | — | — | — | — | — | — | — | — | — | — | — | — | S 15 | S 15 | — | — | — | — |
| kJ | 299 | 307 | 331 | 351 | 286 | 1556 | — | — | — | — | — | — | — | — | — | — | — | — | 4343 | 5069 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 10 | 0 | 0 | 0 | 0 | 0 | 10 | 13 | 10 | 0 | 0 | 0 | 0 | 0 | 13 | 13 | 13 | 0 | 6 | 6 | 0 | 0 | 13 | 15 |
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