Buy Less, Surf More This Black Friday
Surf-forecast is providing a free, all-access pass to our premium features and 12-day forecasts all weekend.
- 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 2 am Thursday 27 Nov 2025 -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
20.1° C
(Which is 2.8°C colder than average for this time of year)How big are the waves at Siriu today?
The current surf forecast for Siriu at 6AM is: 1.2m 8s primary swell from a East direction and 0.1m 7s secondary swell from a South direction (forecast issued at 02:00am November 27). The wind direction is predicted to be cross-onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (27 Nov) | 4ft (1.2m) | 8s |
| Afternoon (27 Nov) | 3.5ft (1.1m) | 8s |
| Evening (27 Nov) | 4.5ft (1.3m) | 8s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 27 | Friday 28 | Saturday 29 | ||||||||||||||||||||||
| 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 153 | 182 | 177 | 173 | 177 | 161 | 200 | 241 | 245 | 245 | 201 | 144 | 118 | 118 | 118 | 94 | 118 | 118 | 94 | 94 | 116 | 126 | 127 | 108 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross | cross- on | cross- on | cross- off | cross | cross- off | off | glass | cross- on | cross- on | cross- on | cross | cross- off |
High Tide / height (m) | 10:01AM 0.60 | 6:08PM 0.53 | 10:47AM 0.65 | 7:53PM 0.52 | 11:25AM 0.68 | |||||||||||||||||||
Low Tide / height (m) | 1:23AM 0.17 | 2:37PM 0.41 | 2:35AM 0.15 | 3:42PM 0.37 | 3:42AM 0.13 | 4:37PM 0.32 | ||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | ||||||||||||||||||||||
| Sunrise | - | - | 5:09 | - | - | - | - | - | - | - | 5:09 | - | - | - | - | - | - | - | 5:09 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 6:52 | - | - | - | - | - | - | - | 6:53 | - | - | - | - | - | - | - | 6:54 | - |
 | |  | |  | | |  | |  | | | | |  | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | - | - | - | - | - | - | - | - | - |
| Temp. °C | 18 | 18 | 19 | 20 | 22 | 23 | 21 | 19 | 18 | 18 | 18 | 23 | 26 | 26 | 23 | 21 | 21 | 21 | 21 | 23 | 24 | 23 | 21 | 20 |
| Feels °C (?) | 17 | 17 | 18 | 19 | 19 | 19 | 18 | 17 | 16 | 16 | 16 | 22 | 25 | 25 | 25 | 22 | 23 | 23 | 23 | 24 | 25 | 23 | 21 | 21 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Latest Updates
Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.
Previously used in our snow jackets for mountain conditions, PrimaLoft® technology is making its debut in the surf industry. The aim is to bring mountain-grade warmth to the waves.
Vancouver Island’s Day Of Days With Reed Platenius
Surf-Forecast recently helped the 21-year-old Canadian pro surfer and adventurer score some cold water perfection at home.
5 Reasons Why Costa Rica Is A Surfer (and Non Surfer) Paradise
With or without a surfboard, Costa Rica is a bucket list destination that has shown what a nation is capable of when nature is put first.
Read more
Discover more articles and updates in the Greenroom.
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