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Siriu Surf Forecast
/ Santa Catarina – Sul (37 surf breaks) /
Surf Forecasts:
Siriu surfForecast / Santa Catarina – Sul / Brazil
48hr Weather and Surf, issued 8 am Saturday 18 Apr 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
23.2° C
(Which is slightly cooler than normal)How big are the waves at Siriu today?
The current surf forecast for Siriu at 4PM is: 0.6m 9s primary swell from a South-southeast direction and 0.6m 8s secondary swell from a East-southeast direction, 0.3m 4s secondary swell from a South-southeast direction (forecast issued at 08:00am April 18). The wind direction is predicted to be cross-onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Apr) | 2ft (0.6m) | 10s |
| Afternoon (18 Apr) | 2ft (0.6m) | 10s |
| Evening (18 Apr) | 2.5ft (0.7m) | 8s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 18 | Sunday 19 | Monday 20 | Tue 21 | |||||||||||||||||||||
| 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 | 0 AM | 3 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 10 | 10 | 10 | 10 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 11 | 11 | 11 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 65 | 64 | 63 | 60 | 63 | 68 | 182 | 235 | 171 | 196 | 159 | 155 | 123 | 112 | 129 | 129 | 127 | 130 | 119 | 119 | 166 | 160 | 180 | 173 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- on | cross- on | cross | cross- off | off | off | cross- off | glass | on | cross- on | cross- off | off | off | off | glass | glass | on | on | glass | glass | glass | cross- off |
High Tide / height (m) | 2:34PM 0.80 | 2:22AM 0.58 | 3:13PM 0.76 | 2:37AM 0.55 | 3:56PM 0.68 | 2:51AM 0.54 | ||||||||||||||||||
Low Tide / height (m) | 8:50AM 0.14 | 9:54PM 0.24 | 9:16AM 0.14 | 10:52PM 0.36 | 9:32AM 0.14 | 12:03AM 0.47 | ||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tue 21 | |||||||||||||||||||||
| Sunrise | - | 6:33 | - | - | - | - | - | - | - | 6:33 | - | - | - | - | - | - | - | 6:33 | - | - | - | - | - | - |
| Sunset | - | - | - | 5:53 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:52 | - | - | - | - |
 |  | | | | | | | | | | | | | | | | | | | | |  |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 21 | 24 | 26 | 25 | 22 | 21 | 20 | 20 | 19 | 22 | 24 | 24 | 21 | 20 | 19 | 18 | 18 | 20 | 23 | 23 | 21 | 20 | 20 | 19 |
| Feels °C (?) | 22 | 25 | 26 | 25 | 23 | 22 | 20 | 20 | 19 | 23 | 24 | 24 | 22 | 21 | 19 | 18 | 18 | 21 | 24 | 23 | 23 | 22 | 22 | 20 |
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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.
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