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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 Friday 17 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
22.7° C
(Which is 1.1°C colder than average for this time of year)How big are the waves at Siriu today?
The current surf forecast for Siriu at 2PM is: 0.7m 11s primary swell from a South-southeast direction and 0.8m 7s secondary swell from a East direction, 0.9m 5s secondary swell from a Northeast direction (forecast issued at 08:00am April 17). The wind direction is predicted to be cross-onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Apr) | 2.5ft (0.7m) | 11s |
| Afternoon (17 Apr) | 2.5ft (0.7m) | 11s |
| Evening (17 Apr) | 2.5ft (0.7m) | 10s |
Table - waves today at Siriu. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 17 | Saturday 18 | Sunday 19 | Mon 20 | |||||||||||||||||||||
| 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) (?) | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 8 | 10 | 10 | 7 | 7 | 7 | 10 | 8 | 9 | 10 | 10 | 10 | 9 | 9 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 109 | 105 | 103 | 103 | 99 | 95 | 69 | 67 | 65 | 67 | 63 | 61 | 63 | 54 | 68 | 78 | 107 | 96 | 237 | 220 | 219 | 201 | 162 | 155 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross- on | glass | off | cross- off | cross- off | cross- off | cross | cross- on | cross- on | cross | off | off | cross- off | cross- off | glass | cross- on | cross- on | cross- off | cross- off | off | off |
High Tide / height (m) | 1:57PM 0.82 | 2:08AM 0.63 | 2:34PM 0.80 | 2:22AM 0.58 | 3:13PM 0.76 | 2:37AM 0.55 | ||||||||||||||||||
Low Tide / height (m) | 8:20AM 0.16 | 9:05PM 0.12 | 8:50AM 0.14 | 9:54PM 0.24 | 9:16AM 0.14 | 10:52PM 0.36 | ||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Mon 20 | |||||||||||||||||||||
| Sunrise | - | 6:31 | - | - | - | - | - | - | - | 6:33 | - | - | - | - | - | - | - | 6:33 | - | - | - | - | - | - |
| Sunset | - | - | - | 5:54 | - | - | - | - | - | - | - | 5:53 | - | - | - | - | - | - | - | 5:52 | - | - | - | - |
 |  | |  |  | | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 21 | 23 | 28 | 27 | 24 | 23 | 22 | 21 | 21 | 23 | 25 | 24 | 22 | 21 | 20 | 20 | 19 | 22 | 24 | 24 | 21 | 20 | 19 | 18 |
| Feels °C (?) | 21 | 23 | 28 | 29 | 28 | 26 | 24 | 22 | 22 | 24 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 24 | 25 | 23 | 22 | 21 | 19 | 18 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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